HTTP Triggers hookup (#1086)

* Initial suypport for invoking tiggers

* dupe method

* tighten server constraints

* runner tests not working yet

* basic route tests passing

* post rebase fixes

* add hybrid support for trigger invoke and tests

* consoloidate all hybrid evil into one place

* cleanup and make triggers unique by source

* fix oops with Agent

* linting

* review fixes

api/agent/agent.go

@@ -88,24 +88,11 @@ type Agent interface {
 	io.Closer
 
 	AddCallListener(fnext.CallListener)
-
-	// Enqueue is to use the agent's sweet sweet client bindings to remotely
-	// queue async tasks and should be removed from Agent interface ASAP.
-	Enqueue(context.Context, *models.Call) error
-
-	// GetAppID is to get the match of an app name to its ID
-	GetAppID(ctx context.Context, appName string) (string, error)
-
-	// GetAppByID is to get the app by ID
-	GetAppByID(ctx context.Context, appID string) (*models.App, error)
-
-	// GetRoute is to get the route by appId and path
-	GetRoute(ctx context.Context, appID string, path string) (*models.Route, error)
 }
 
 type agent struct {
 	cfg           AgentConfig
-	da            DataAccess
+	da            CallHandler
 	callListeners []fnext.CallListener
 
 	driver drivers.Driver
@@ -121,12 +108,15 @@ type agent struct {
 	disableAsyncDequeue bool
 
 	callOverrider CallOverrider
+	// deferred actions to call at end of initialisation
+	onStartup []func()
 }
 
+// AgentOption configures an agent at startup
 type AgentOption func(*agent) error
 
 // New creates an Agent that executes functions locally as Docker containers.
-func New(da DataAccess, options ...AgentOption) Agent {
+func New(da CallHandler, options ...AgentOption) Agent {
 
 	cfg, err := NewAgentConfig()
 	if err != nil {
@@ -137,6 +127,10 @@ func New(da DataAccess, options ...AgentOption) Agent {
 		cfg: *cfg,
 	}
 
+	a.shutWg = common.NewWaitGroup()
+	a.da = da
+	a.slotMgr = NewSlotQueueMgr()
+
 	// Allow overriding config
 	for _, option := range options {
 		err = option(a)
@@ -151,24 +145,31 @@ func New(da DataAccess, options ...AgentOption) Agent {
 		a.driver = NewDockerDriver(&a.cfg)
 	}
 
-	a.da = da
-	a.slotMgr = NewSlotQueueMgr()
 	a.resources = NewResourceTracker(&a.cfg)
-	a.shutWg = common.NewWaitGroup()
 
-	// TODO assert that agent doesn't get started for API nodes up above ?
+	for _, sup := range a.onStartup {
-	if a.disableAsyncDequeue {
+		sup()
+	}
 	return a
 }
 
+func (a *agent) addStartup(sup func()) {
+	a.onStartup = append(a.onStartup, sup)
+
+}
+
+// WithAsync Enables Async  operations on the agent
+func WithAsync(dqda DequeueDataAccess) AgentOption {
+	return func(a *agent) error {
 		if !a.shutWg.AddSession(1) {
 			logrus.Fatalf("cannot start agent, unable to add session")
 		}
-	go a.asyncDequeue() // safe shutdown can nanny this fine
+		a.addStartup(func() {
-
+			go a.asyncDequeue(dqda) // safe shutdown can nanny this fine
-	return a
+		})
+		return nil
+	}
 }
-
 func WithConfig(cfg *AgentConfig) AgentOption {
 	return func(a *agent) error {
 		a.cfg = *cfg
@@ -176,7 +177,7 @@ func WithConfig(cfg *AgentConfig) AgentOption {
 	}
 }
 
-// Provide a customer driver to agent
+// WithDockerDriver Provides a customer driver to agent
 func WithDockerDriver(drv drivers.Driver) AgentOption {
 	return func(a *agent) error {
 		if a.driver != nil {
@@ -188,14 +189,7 @@ func WithDockerDriver(drv drivers.Driver) AgentOption {
 	}
 }
 
-func WithoutAsyncDequeue() AgentOption {
+// WithCallOverrider registers register a CallOverrider to modify a Call and extensions on call construction
-	return func(a *agent) error {
-		a.disableAsyncDequeue = true
-		return nil
-	}
-}
-
-// Agents can use this to register a CallOverrider to modify a Call and extensions
 func WithCallOverrider(fn CallOverrider) AgentOption {
 	return func(a *agent) error {
 		if a.callOverrider != nil {
@@ -206,7 +200,7 @@ func WithCallOverrider(fn CallOverrider) AgentOption {
 	}
 }
 
-// Create a default docker driver from agent config
+// NewDockerDriver creates a default docker driver from agent config
 func NewDockerDriver(cfg *AgentConfig) *docker.DockerDriver {
 	return docker.NewDocker(drivers.Config{
 		DockerNetworks:       cfg.DockerNetworks,
@@ -221,23 +215,6 @@ func NewDockerDriver(cfg *AgentConfig) *docker.DockerDriver {
 	})
 }
 
-func (a *agent) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
-	return a.da.GetAppByID(ctx, appID)
-}
-
-func (a *agent) GetAppID(ctx context.Context, appName string) (string, error) {
-	return a.da.GetAppID(ctx, appName)
-}
-
-func (a *agent) GetRoute(ctx context.Context, appID string, path string) (*models.Route, error) {
-	return a.da.GetRoute(ctx, appID, path)
-}
-
-// TODO shuffle this around somewhere else (maybe)
-func (a *agent) Enqueue(ctx context.Context, call *models.Call) error {
-	return a.da.Enqueue(ctx, call)
-}
-
 func (a *agent) Close() error {
 	var err error
 
@@ -251,12 +228,6 @@ func (a *agent) Close() error {
 		}
 	})
 
-	// shutdown any db/queue resources
-	// associated with DataAccess
-	daErr := a.da.Close()
-	if daErr != nil {
-		return daErr
-	}
 	return err
 }
 
@@ -856,7 +827,7 @@ func (a *agent) runHot(ctx context.Context, call *call, tok ResourceToken, state
 	state.UpdateState(ctx, ContainerStateStart, call.slots)
 	defer state.UpdateState(ctx, ContainerStateDone, call.slots)
 
-	container, closer := NewHotContainer(ctx, call, &a.cfg)
+	container, closer := newHotContainer(ctx, call, &a.cfg)
 	defer closer()
 
 	logger := logrus.WithFields(logrus.Fields{"id": container.id, "app_id": call.AppID, "route": call.Path, "image": call.Image, "memory": call.Memory, "cpus": call.CPUs, "format": call.Format, "idle_timeout": call.IdleTimeout})
@@ -1041,7 +1012,8 @@ type container struct {
 	stats  *drivers.Stats
 }
 
-func NewHotContainer(ctx context.Context, call *call, cfg *AgentConfig) (*container, func()) {
+//newHotContainer creates a container that can be used for multiple sequential events
+func newHotContainer(ctx context.Context, call *call, cfg *AgentConfig) (*container, func()) {
 	// if freezer is enabled, be consistent with freezer behavior and
 	// block stdout and stderr between calls.
 	isBlockIdleIO := MaxDisabledMsecs != cfg.FreezeIdle

api/agent/agent_test.go

@@ -5,7 +5,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"math"
@@ -17,7 +16,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/fnproject/fn/api/datastore"
 	"github.com/fnproject/fn/api/id"
 	"github.com/fnproject/fn/api/logs"
 	"github.com/fnproject/fn/api/models"
@@ -83,10 +81,7 @@ func TestCallConfigurationRequest(t *testing.T) {
 	rCfg := models.Config{"ROUTE_VAR": "BAR"}
 
 	app := &models.App{ID: "app_id", Name: appName, Config: cfg}
-	ds := datastore.NewMockInit(
+	route := &models.Route{
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		AppID:       app.ID,
 		Config:      rCfg,
 		Path:        path,
@@ -96,12 +91,11 @@ func TestCallConfigurationRequest(t *testing.T) {
 		Timeout:     timeout,
 		IdleTimeout: idleTimeout,
 		Memory:      memory,
-			},
+	}
-		},
+
-	)
 	ls := logs.NewMock()
 
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	w := httptest.NewRecorder()
@@ -122,7 +116,7 @@ func TestCallConfigurationRequest(t *testing.T) {
 
 	call, err := a.GetCall(
 		WithWriter(w), // XXX (reed): order matters [for now]
-		FromRequest(a, app, path, req),
+		FromRequest(app, route, req),
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -242,10 +236,9 @@ func TestCallConfigurationModel(t *testing.T) {
 	}
 
 	// FromModel doesn't need a datastore, for now...
-	ds := datastore.NewMockInit()
 	ls := logs.NewMock()
 
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	callI, err := a.GetCall(FromModel(cm))
@@ -314,10 +307,9 @@ func TestAsyncCallHeaders(t *testing.T) {
 	}
 
 	// FromModel doesn't need a datastore, for now...
-	ds := datastore.NewMockInit()
 	ls := logs.NewMock()
 
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	callI, err := a.GetCall(FromModel(cm))
@@ -432,9 +424,6 @@ func TestReqTooLarge(t *testing.T) {
 		Method:      "GET",
 	}
 
-	// FromModel doesn't need a datastore, for now...
-	ds := datastore.NewMockInit()
-
 	cfg, err := NewAgentConfig()
 	if err != nil {
 		t.Fatal(err)
@@ -443,7 +432,7 @@ func TestReqTooLarge(t *testing.T) {
 	cfg.MaxRequestSize = 5
 	ls := logs.NewMock()
 
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)), WithConfig(cfg))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)), WithConfig(cfg))
 	defer checkClose(t, a)
 
 	_, err = a.GetCall(FromModel(cm))
@@ -494,10 +483,9 @@ func TestSubmitError(t *testing.T) {
 	}
 
 	// FromModel doesn't need a datastore, for now...
-	ds := datastore.NewMockInit()
 	ls := logs.NewMock()
 
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	var wg sync.WaitGroup
@@ -546,12 +534,7 @@ func TestHTTPWithoutContentLengthWorks(t *testing.T) {
 	url := "http://127.0.0.1:8080/r/" + appName + path
 
 	app := &models.App{ID: "app_id", Name: appName}
-
+	route := &models.Route{
-	// we need to load in app & route so that FromRequest works
-	ds := datastore.NewMockInit(
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        path,
 		AppID:       app.ID,
 		Image:       "fnproject/fn-test-utils",
@@ -560,12 +543,10 @@ func TestHTTPWithoutContentLengthWorks(t *testing.T) {
 		Timeout:     5,
 		IdleTimeout: 10,
 		Memory:      128,
-			},
+	}
-		},
-	)
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	bodOne := `{"echoContent":"yodawg"}`
@@ -580,7 +561,7 @@ func TestHTTPWithoutContentLengthWorks(t *testing.T) {
 
 	// grab a buffer so we can read what gets written to this guy
 	var out bytes.Buffer
-	callI, err := a.GetCall(FromRequest(a, app, path, req), WithWriter(&out))
+	callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&out))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -625,11 +606,8 @@ func TestGetCallReturnsResourceImpossibility(t *testing.T) {
 		Memory:      math.MaxUint64,
 	}
 
-	// FromModel doesn't need a datastore, for now...
-	ds := datastore.NewMockInit()
-
 	ls := logs.NewMock()
-	a := New(NewCachedDataAccess(NewDirectDataAccess(ds, ls, new(mqs.Mock))))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	_, err := a.GetCall(FromModel(call))
@@ -648,11 +626,7 @@ func TestTmpFsRW(t *testing.T) {
 
 	app := &models.App{ID: "app_id", Name: appName}
 
-	// we need to load in app & route so that FromRequest works
+	route := &models.Route{
-	ds := datastore.NewMockInit(
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        path,
 		AppID:       app.ID,
 		Image:       "fnproject/fn-test-utils",
@@ -660,13 +634,11 @@ func TestTmpFsRW(t *testing.T) {
 		Format:      "http", // this _is_ the test
 		Timeout:     5,
 		IdleTimeout: 10,
-				Memory:      64,
+		Memory:      128,
-			},
+	}
-		},
-	)
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	// Here we tell fn-test-utils to read file /proc/mounts and create a /tmp/salsa of 4MB
@@ -678,7 +650,7 @@ func TestTmpFsRW(t *testing.T) {
 	}
 
 	var out bytes.Buffer
-	callI, err := a.GetCall(FromRequest(a, app, path, req), WithWriter(&out))
+	callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&out))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -745,11 +717,7 @@ func TestTmpFsSize(t *testing.T) {
 
 	app := &models.App{ID: "app_id", Name: appName}
 
-	// we need to load in app & route so that FromRequest works
+	route := &models.Route{
-	ds := datastore.NewMockInit(
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        path,
 		AppID:       app.ID,
 		Image:       "fnproject/fn-test-utils",
@@ -759,9 +727,7 @@ func TestTmpFsSize(t *testing.T) {
 		IdleTimeout: 10,
 		Memory:      64,
 		TmpFsSize:   1,
-			},
+	}
-		},
-	)
 
 	cfg, err := NewAgentConfig()
 	if err != nil {
@@ -771,7 +737,7 @@ func TestTmpFsSize(t *testing.T) {
 	cfg.MaxTmpFsInodes = 1024
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)), WithConfig(cfg))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)), WithConfig(cfg))
 	defer checkClose(t, a)
 
 	// Here we tell fn-test-utils to read file /proc/mounts and create a /tmp/salsa of 4MB
@@ -783,7 +749,7 @@ func TestTmpFsSize(t *testing.T) {
 	}
 
 	var out bytes.Buffer
-	callI, err := a.GetCall(FromRequest(a, app, path, req), WithWriter(&out))
+	callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&out))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -923,11 +889,8 @@ func TestPipesAreClear(t *testing.T) {
 	ca.IdleTimeout = 60 // keep this bad boy alive
 	ca.Timeout = 4      // short
 	app := &models.App{Name: "myapp", ID: ca.AppID}
-	// we need to load in app & route so that FromRequest works
+
-	ds := datastore.NewMockInit(
+	route := &models.Route{
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        ca.Path,
 		AppID:       ca.AppID,
 		Image:       ca.Image,
@@ -936,12 +899,10 @@ func TestPipesAreClear(t *testing.T) {
 		Timeout:     ca.Timeout,
 		IdleTimeout: ca.IdleTimeout,
 		Memory:      ca.Memory,
-			},
+	}
-		},
-	)
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	// test read this body after 5s (after call times out) and make sure we don't get yodawg
@@ -960,7 +921,7 @@ func TestPipesAreClear(t *testing.T) {
 	req.Header.Set("Content-Length", fmt.Sprintf("%d", len(bodOne)))
 
 	var outOne bytes.Buffer
-	callI, err := a.GetCall(FromRequest(a, app, ca.Path, req), WithWriter(&outOne))
+	callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&outOne))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -994,7 +955,7 @@ func TestPipesAreClear(t *testing.T) {
 	req.Header.Set("Content-Length", fmt.Sprintf("%d", len(bodTwo)))
 
 	var outTwo bytes.Buffer
-	callI, err = a.GetCall(FromRequest(a, app, ca.Path, req), WithWriter(&outTwo))
+	callI, err = a.GetCall(FromRequest(app, route, req), WithWriter(&outTwo))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -1074,11 +1035,8 @@ func TestPipesDontMakeSpuriousCalls(t *testing.T) {
 	app := &models.App{Name: "myapp"}
 
 	app.ID = call.AppID
-	// we need to load in app & route so that FromRequest works
+
-	ds := datastore.NewMockInit(
+	route := &models.Route{
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        call.Path,
 		AppID:       call.AppID,
 		Image:       call.Image,
@@ -1087,12 +1045,10 @@ func TestPipesDontMakeSpuriousCalls(t *testing.T) {
 		Timeout:     call.Timeout,
 		IdleTimeout: call.IdleTimeout,
 		Memory:      call.Memory,
-			},
+	}
-		},
-	)
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)))
 	defer checkClose(t, a)
 
 	bodOne := `{"echoContent":"yodawg"}`
@@ -1102,7 +1058,7 @@ func TestPipesDontMakeSpuriousCalls(t *testing.T) {
 	}
 
 	var outOne bytes.Buffer
-	callI, err := a.GetCall(FromRequest(a, app, call.Path, req), WithWriter(&outOne))
+	callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&outOne))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -1127,7 +1083,7 @@ func TestPipesDontMakeSpuriousCalls(t *testing.T) {
 	}
 
 	var outTwo bytes.Buffer
-	callI, err = a.GetCall(FromRequest(a, app, call.Path, req), WithWriter(&outTwo))
+	callI, err = a.GetCall(FromRequest(app, route, req), WithWriter(&outTwo))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -1172,11 +1128,8 @@ func TestNBIOResourceTracker(t *testing.T) {
 	app := &models.App{ID: "app_id", Name: "myapp"}
 
 	app.ID = call.AppID
-	// we need to load in app & route so that FromRequest works
+
-	ds := datastore.NewMockInit(
+	route := &models.Route{
-		[]*models.App{app},
-		[]*models.Route{
-			{
 		Path:        call.Path,
 		AppID:       call.AppID,
 		Image:       call.Image,
@@ -1185,9 +1138,7 @@ func TestNBIOResourceTracker(t *testing.T) {
 		Timeout:     call.Timeout,
 		IdleTimeout: call.IdleTimeout,
 		Memory:      call.Memory,
-			},
+	}
-		},
-	)
 
 	cfg, err := NewAgentConfig()
 	if err != nil {
@@ -1199,7 +1150,7 @@ func TestNBIOResourceTracker(t *testing.T) {
 	cfg.HotPoll = 20 * time.Millisecond
 
 	ls := logs.NewMock()
-	a := New(NewDirectDataAccess(ds, ls, new(mqs.Mock)), WithConfig(cfg))
+	a := New(NewDirectCallDataAccess(ls, new(mqs.Mock)), WithConfig(cfg))
 	defer checkClose(t, a)
 
 	reqCount := 20
@@ -1213,7 +1164,7 @@ func TestNBIOResourceTracker(t *testing.T) {
 			}
 
 			var outOne bytes.Buffer
-			callI, err := a.GetCall(FromRequest(a, app, call.Path, req), WithWriter(&outOne))
+			callI, err := a.GetCall(FromRequest(app, route, req), WithWriter(&outOne))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -1250,44 +1201,3 @@ func TestNBIOResourceTracker(t *testing.T) {
 		t.Fatalf("Expected successes, but got %d", ok)
 	}
 }
-
-type closingDataAccess struct {
-	DataAccess
-	closeReturn error
-	closed      chan struct{}
-}
-
-func newClosingDataAccess(closeReturn error) *closingDataAccess {
-	ds := datastore.NewMockInit()
-	ls := logs.NewMock()
-	return &closingDataAccess{
-		DataAccess:  NewDirectDataAccess(ds, ls, new(mqs.Mock)),
-		closed:      make(chan struct{}),
-		closeReturn: closeReturn,
-	}
-
-}
-
-func (da *closingDataAccess) Close() error {
-	close(da.closed)
-	return da.closeReturn
-}
-
-func TestClosesDataAccess(t *testing.T) {
-	da := newClosingDataAccess(nil)
-
-	a := New(da)
-	checkClose(t, a)
-	<-da.closed
-}
-
-func TestCloseReturnsDataAccessError(t *testing.T) {
-	err := errors.New("foo")
-	da := newClosingDataAccess(err)
-	a := New(da)
-
-	if cerr := a.Close(); cerr != err {
-		t.Fatalf("Wrong error returned, expected %v but got %v", err, cerr)
-	}
-	<-da.closed
-}

api/agent/async.go

@@ -11,7 +11,7 @@ import (
 	"go.opencensus.io/trace"
 )
 
-func (a *agent) asyncDequeue() {
+func (a *agent) asyncDequeue(dqda DequeueDataAccess) {
 	// this is just so we can hang up the dequeue request if we get shut down
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -37,7 +37,7 @@ func (a *agent) asyncDequeue() {
 		case <-a.shutWg.Closer():
 			a.shutWg.DoneSession()
 			return
-		case model, ok := <-a.asyncChew(ctx):
+		case model, ok := <-a.asyncChew(ctx, dqda):
 			if ok {
 				go func(model *models.Call) {
 					a.asyncRun(ctx, model)
@@ -53,14 +53,14 @@ func (a *agent) asyncDequeue() {
 	}
 }
 
-func (a *agent) asyncChew(ctx context.Context) <-chan *models.Call {
+func (a *agent) asyncChew(ctx context.Context, dqda DequeueDataAccess) <-chan *models.Call {
 	ch := make(chan *models.Call, 1)
 
 	go func() {
 		ctx, cancel := context.WithTimeout(ctx, a.cfg.AsyncChewPoll)
 		defer cancel()
 
-		call, err := a.da.Dequeue(ctx)
+		call, err := dqda.Dequeue(ctx)
 		if call != nil {
 			ch <- call
 		} else { // call is nil / error

api/agent/call.go

@@ -46,23 +46,15 @@ type CallOverrider func(*models.Call, map[string]string) (map[string]string, err
 // TODO build w/o closures... lazy
 type CallOpt func(c *call) error
 
-type Param struct {
-	Key   string
-	Value string
-}
-type Params []Param
-
 const (
 	ceMimeType = "application/cloudevents+json"
 )
 
-func FromRequest(a Agent, app *models.App, path string, req *http.Request) CallOpt {
+// FromRequest initialises a call to a route from an HTTP request
+// deprecate with routes
+func FromRequest(app *models.App, route *models.Route, req *http.Request) CallOpt {
 	return func(c *call) error {
 		ctx := req.Context()
-		route, err := a.GetRoute(ctx, app.ID, path)
-		if err != nil {
-			return err
-		}
 
 		log := common.Logger(ctx)
 		// Check whether this is a CloudEvent, if coming in via HTTP router (only way currently), then we'll look for a special header
@@ -125,7 +117,7 @@ func FromRequest(a Agent, app *models.App, path string, req *http.Request) CallO
 			Memory:      route.Memory,
 			CPUs:        route.CPUs,
 			Config:      buildConfig(app, route),
-			Annotations: buildAnnotations(app, route),
+			Annotations: app.Annotations.MergeChange(route.Annotations),
 			Headers:     req.Header,
 			CreatedAt:   common.DateTime(time.Now()),
 			URL:         reqURL(req),
@@ -139,6 +131,77 @@ func FromRequest(a Agent, app *models.App, path string, req *http.Request) CallO
 	}
 }
 
+// Sets up a call from an http trigger request
+func FromHTTPTriggerRequest(app *models.App, fn *models.Fn, trigger *models.Trigger, req *http.Request) CallOpt {
+	return func(c *call) error {
+		ctx := req.Context()
+
+		log := common.Logger(ctx)
+		// Check whether this is a CloudEvent, if coming in via HTTP router (only way currently), then we'll look for a special header
+		// Content-Type header: https://github.com/cloudevents/spec/blob/master/http-transport-binding.md#32-structured-content-mode
+		// Expected Content-Type for a CloudEvent: application/cloudevents+json; charset=UTF-8
+		contentType := req.Header.Get("Content-Type")
+		t, _, err := mime.ParseMediaType(contentType)
+		if err != nil {
+			// won't fail here, but log
+			log.Debugf("Could not parse Content-Type header: %v", err)
+		} else {
+			if t == ceMimeType {
+				c.IsCloudEvent = true
+				fn.Format = models.FormatCloudEvent
+			}
+		}
+
+		if fn.Format == "" {
+			fn.Format = models.FormatDefault
+		}
+
+		id := id.New().String()
+
+		// TODO this relies on ordering of opts, but tests make sure it works, probably re-plumb/destroy headers
+		// TODO async should probably supply an http.ResponseWriter that records the logs, to attach response headers to
+		if rw, ok := c.w.(http.ResponseWriter); ok {
+			rw.Header().Add("FN_CALL_ID", id)
+		}
+
+		var syslogURL string
+		if app.SyslogURL != nil {
+			syslogURL = *app.SyslogURL
+		}
+
+		c.Call = &models.Call{
+			ID:    id,
+			Path:  trigger.Source,
+			Image: fn.Image,
+			// Delay: 0,
+			Type:   "sync",
+			Format: fn.Format,
+			// Payload: TODO,
+			Priority:    new(int32), // TODO this is crucial, apparently
+			Timeout:     fn.Timeout,
+			IdleTimeout: fn.IdleTimeout,
+			TmpFsSize:   0, // TODO clean up this
+			Memory:      fn.Memory,
+			CPUs:        0, // TODO clean up this
+			Config:      buildTriggerConfig(app, fn, trigger),
+			// TODO - this wasn't really the intention here (that annotations would naturally cascade
+			// but seems to be necessary for some runner behaviour
+			Annotations: app.Annotations.MergeChange(fn.Annotations).MergeChange(trigger.Annotations),
+			Headers:     req.Header,
+			CreatedAt:   common.DateTime(time.Now()),
+			URL:         reqURL(req),
+			Method:      req.Method,
+			AppID:       app.ID,
+			FnID:        fn.ID,
+			TriggerID:   trigger.ID,
+			SyslogURL:   syslogURL,
+		}
+
+		c.req = req
+		return nil
+	}
+}
+
 func buildConfig(app *models.App, route *models.Route) models.Config {
 	conf := make(models.Config, 8+len(app.Config)+len(route.Config))
 	for k, v := range app.Config {
@@ -163,15 +226,24 @@ func buildConfig(app *models.App, route *models.Route) models.Config {
 	return conf
 }
 
-func buildAnnotations(app *models.App, route *models.Route) models.Annotations {
+func buildTriggerConfig(app *models.App, fn *models.Fn, trigger *models.Trigger) models.Config {
-	ann := make(models.Annotations, len(app.Annotations)+len(route.Annotations))
+	conf := make(models.Config, 8+len(app.Config)+len(fn.Config))
-	for k, v := range app.Annotations {
+	for k, v := range app.Config {
-		ann[k] = v
+		conf[k] = v
 	}
-	for k, v := range route.Annotations {
+	for k, v := range fn.Config {
-		ann[k] = v
+		conf[k] = v
 	}
-	return ann
+
+	conf["FN_FORMAT"] = fn.Format
+	conf["FN_APP_NAME"] = app.Name
+	conf["FN_PATH"] = trigger.Source
+	// TODO: might be a good idea to pass in: "FN_BASE_PATH" = fmt.Sprintf("/r/%s", appName) || "/" if using DNS entries per app
+	conf["FN_MEMORY"] = fmt.Sprintf("%d", fn.Memory)
+	conf["FN_TYPE"] = "sync"
+	conf["FN_FN_ID"] = fn.ID
+
+	return conf
 }
 
 func reqURL(req *http.Request) string {
@@ -188,9 +260,7 @@ func reqURL(req *http.Request) string {
 	return req.URL.String()
 }
 
-// TODO this currently relies on FromRequest having happened before to create the model
+// FromModel creates a call object from an existing stored call model object, reading the body from the stored call payload
-// here, to be a fully qualified model. We probably should double check but having a way
-// to bypass will likely be what's used anyway unless forced.
 func FromModel(mCall *models.Call) CallOpt {
 	return func(c *call) error {
 		c.Call = mCall
@@ -207,6 +277,7 @@ func FromModel(mCall *models.Call) CallOpt {
 	}
 }
 
+// FromModelAndInput creates a call object from an existing stored call model object , reading the body from a provided stream
 func FromModelAndInput(mCall *models.Call, in io.ReadCloser) CallOpt {
 	return func(c *call) error {
 		c.Call = mCall
@@ -223,6 +294,7 @@ func FromModelAndInput(mCall *models.Call, in io.ReadCloser) CallOpt {
 	}
 }
 
+// WithWriter sets the writier that the call uses to send its output message to
 // TODO this should be required
 func WithWriter(w io.Writer) CallOpt {
 	return func(c *call) error {
@@ -231,6 +303,7 @@ func WithWriter(w io.Writer) CallOpt {
 	}
 }
 
+// WithContext overrides the context on the call
 func WithContext(ctx context.Context) CallOpt {
 	return func(c *call) error {
 		c.req = c.req.WithContext(ctx)
@@ -238,6 +311,7 @@ func WithContext(ctx context.Context) CallOpt {
 	}
 }
 
+// WithExtensions adds internal attributes to the call that can be interpreted by extensions in the agent
 // Pure runner can use this to pass an extension to the call
 func WithExtensions(extensions map[string]string) CallOpt {
 	return func(c *call) error {
@@ -287,7 +361,7 @@ func (a *agent) GetCall(opts ...CallOpt) (Call, error) {
 
 	setupCtx(&c)
 
-	c.da = a.da
+	c.handler = a.da
 	c.ct = a
 	c.stderr = setupLogger(c.req.Context(), a.cfg.MaxLogSize, c.Call)
 	if c.w == nil {
@@ -321,7 +395,7 @@ type call struct {
 	// IsCloudEvent flag whether this was ingested as a cloud event. This may become the default or only way.
 	IsCloudEvent bool `json:"is_cloud_event"`
 
-	da             DataAccess
+	handler        CallHandler
 	w              io.Writer
 	req            *http.Request
 	stderr         io.ReadWriteCloser
@@ -336,6 +410,8 @@ type call struct {
 	extensions map[string]string
 }
 
+// SlotHashId returns a string identity for this call that can be used to uniquely place the call in a given container
+// This should correspond to a unique identity (including data changes) of the underlying function
 func (c *call) SlotHashId() string {
 	return c.slotHashId
 }
@@ -393,7 +469,7 @@ func (c *call) Start(ctx context.Context) error {
 		// running to avoid running the call twice and potentially mark it as
 		// errored (built in long running task detector, so to speak...)
 
-		err := c.da.Start(ctx, c.Model())
+		err := c.handler.Start(ctx, c.Model())
 		if err != nil {
 			return err // let another thread try this
 		}
@@ -426,7 +502,7 @@ func (c *call) End(ctx context.Context, errIn error) error {
 	// ensure stats histogram is reasonably bounded
 	c.Call.Stats = drivers.Decimate(240, c.Call.Stats)
 
-	if err := c.da.Finish(ctx, c.Model(), c.stderr, c.Type == models.TypeAsync); err != nil {
+	if err := c.handler.Finish(ctx, c.Model(), c.stderr, c.Type == models.TypeAsync); err != nil {
 		common.Logger(ctx).WithError(err).Error("error finalizing call on datastore/mq")
 		// note: Not returning err here since the job could have already finished successfully.
 	}

api/agent/data_access.go

@@ -11,26 +11,34 @@ import (
 	"github.com/patrickmn/go-cache"
 )
 
-// DataAccess abstracts the datastore and message queue operations done by the
+//ReadDataAccess represents read operations required to operate a load balancer node
-// agent, so that API nodes and runner nodes can work with the same interface
+type ReadDataAccess interface {
-// but actually operate on the data in different ways (by direct access or by
-// mediation through an API node).
-type DataAccess interface {
 	GetAppID(ctx context.Context, appName string) (string, error)
-
 	// GetAppByID abstracts querying the datastore for an app.
 	GetAppByID(ctx context.Context, appID string) (*models.App, error)
-
+	GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*models.Trigger, error)
+	GetFnByID(ctx context.Context, fnId string) (*models.Fn, error)
 	// GetRoute abstracts querying the datastore for a route within an app.
 	GetRoute(ctx context.Context, appID string, routePath string) (*models.Route, error)
+}
 
-	// Enqueue will add a Call to the queue (ultimately forwards to mq.Push).
+//DequeueDataAccess abstracts an underlying dequeue for async runners
-	Enqueue(ctx context.Context, mCall *models.Call) error
+type DequeueDataAccess interface {
-
 	// Dequeue will query the queue for the next available Call that can be run
 	// by this Agent, and reserve it (ultimately forwards to mq.Reserve).
 	Dequeue(ctx context.Context) (*models.Call, error)
+}
 
+//EnqueueDataAccess abstracts an underying enqueue for async queueing
+type EnqueueDataAccess interface {
+	// Enqueue will add a Call to the queue (ultimately forwards to mq.Push).
+	Enqueue(ctx context.Context, mCall *models.Call) error
+}
+
+// CallHandler consumes the start and finish events for a call
+// This is effectively a callback that is allowed to read the logs -
+// TODO Deprecate this - this could be a CallListener except it also consumes logs
+type CallHandler interface {
 	// Start will attempt to start the provided Call within an appropriate
 	// context.
 	Start(ctx context.Context, mCall *models.Call) error
@@ -38,24 +46,26 @@ type DataAccess interface {
 	// Finish will notify the system that the Call has been processed, and
 	// fulfill the reservation in the queue if the call came from a queue.
 	Finish(ctx context.Context, mCall *models.Call, stderr io.Reader, async bool) error
+}
 
-	// Close will wait for any pending operations to complete and
+// DataAccess is currently
-	// shuts down connections to the underlying datastore/queue resources.
+type DataAccess interface {
-	// Close is not safe to be called from multiple threads.
+	ReadDataAccess
-	io.Closer
+	DequeueDataAccess
+	CallHandler
 }
 
 // CachedDataAccess wraps a DataAccess and caches the results of GetApp and GetRoute.
-type CachedDataAccess struct {
+type cachedDataAccess struct {
-	DataAccess
+	ReadDataAccess
 
 	cache        *cache.Cache
 	singleflight singleflight.SingleFlight
 }
 
-func NewCachedDataAccess(da DataAccess) DataAccess {
+func NewCachedDataAccess(da ReadDataAccess) ReadDataAccess {
-	cda := &CachedDataAccess{
+	cda := &cachedDataAccess{
-		DataAccess: da,
+		ReadDataAccess: da,
 		cache:          cache.New(5*time.Second, 1*time.Minute),
 	}
 	return cda
@@ -69,11 +79,11 @@ func appIDCacheKey(appID string) string {
 	return "a:" + appID
 }
 
-func (da *CachedDataAccess) GetAppID(ctx context.Context, appName string) (string, error) {
+func (da *cachedDataAccess) GetAppID(ctx context.Context, appName string) (string, error) {
-	return da.DataAccess.GetAppID(ctx, appName)
+	return da.ReadDataAccess.GetAppID(ctx, appName)
 }
 
-func (da *CachedDataAccess) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
+func (da *cachedDataAccess) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
 	key := appIDCacheKey(appID)
 	app, ok := da.cache.Get(key)
 	if ok {
@@ -82,7 +92,7 @@ func (da *CachedDataAccess) GetAppByID(ctx context.Context, appID string) (*mode
 
 	resp, err := da.singleflight.Do(key,
 		func() (interface{}, error) {
-			return da.DataAccess.GetAppByID(ctx, appID)
+			return da.ReadDataAccess.GetAppByID(ctx, appID)
 		})
 
 	if err != nil {
@@ -93,7 +103,7 @@ func (da *CachedDataAccess) GetAppByID(ctx context.Context, appID string) (*mode
 	return app.(*models.App), nil
 }
 
-func (da *CachedDataAccess) GetRoute(ctx context.Context, appID string, routePath string) (*models.Route, error) {
+func (da *cachedDataAccess) GetRoute(ctx context.Context, appID string, routePath string) (*models.Route, error) {
 	key := routeCacheKey(appID, routePath)
 	r, ok := da.cache.Get(key)
 	if ok {
@@ -102,7 +112,7 @@ func (da *CachedDataAccess) GetRoute(ctx context.Context, appID string, routePat
 
 	resp, err := da.singleflight.Do(key,
 		func() (interface{}, error) {
-			return da.DataAccess.GetRoute(ctx, appID, routePath)
+			return da.ReadDataAccess.GetRoute(ctx, appID, routePath)
 		})
 
 	if err != nil {
@@ -113,48 +123,55 @@ func (da *CachedDataAccess) GetRoute(ctx context.Context, appID string, routePat
 	return r.(*models.Route), nil
 }
 
-// Close invokes close on the underlying DataAccess
-func (da *CachedDataAccess) Close() error {
-	return da.DataAccess.Close()
-}
-
 type directDataAccess struct {
 	mq models.MessageQueue
-	ds models.Datastore
 	ls models.LogStore
 }
 
-func NewDirectDataAccess(ds models.Datastore, ls models.LogStore, mq models.MessageQueue) DataAccess {
+type directDequeue struct {
+	mq models.MessageQueue
+}
+
+func (ddq *directDequeue) Dequeue(ctx context.Context) (*models.Call, error) {
+	return ddq.mq.Reserve(ctx)
+}
+
+func NewDirectDequeueAccess(mq models.MessageQueue) DequeueDataAccess {
+	return &directDequeue{
+		mq: mq,
+	}
+}
+
+type directEnequeue struct {
+	mq models.MessageQueue
+}
+
+func NewDirectEnqueueAccess(mq models.MessageQueue) EnqueueDataAccess {
+	return &directEnequeue{
+		mq: mq,
+	}
+}
+
+func (da *directEnequeue) Enqueue(ctx context.Context, mCall *models.Call) error {
+	_, err := da.mq.Push(ctx, mCall)
+	return err
+	// TODO: Insert a call in the datastore with the 'queued' state
+}
+
+func NewDirectCallDataAccess(ls models.LogStore, mq models.MessageQueue) CallHandler {
 	da := &directDataAccess{
 		mq: mq,
-		ds: ds,
 		ls: ls,
 	}
 	return da
 }
 
-func (da *directDataAccess) GetAppID(ctx context.Context, appName string) (string, error) {
-	return da.ds.GetAppID(ctx, appName)
-}
-
-func (da *directDataAccess) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
-	return da.ds.GetAppByID(ctx, appID)
-}
-
-func (da *directDataAccess) GetRoute(ctx context.Context, appID string, routePath string) (*models.Route, error) {
-	return da.ds.GetRoute(ctx, appID, routePath)
-}
-
 func (da *directDataAccess) Enqueue(ctx context.Context, mCall *models.Call) error {
 	_, err := da.mq.Push(ctx, mCall)
 	return err
 	// TODO: Insert a call in the datastore with the 'queued' state
 }
 
-func (da *directDataAccess) Dequeue(ctx context.Context) (*models.Call, error) {
-	return da.mq.Reserve(ctx)
-}
-
 func (da *directDataAccess) Start(ctx context.Context, mCall *models.Call) error {
 	// TODO Access datastore and try a Compare-And-Swap to set the call to
 	// 'running'. If it fails, delete the message from the MQ and return an
@@ -183,22 +200,18 @@ func (da *directDataAccess) Finish(ctx context.Context, mCall *models.Call, stde
 	if async {
 		// XXX (reed): delete MQ message, eventually
 		// YYY (hhexo): yes, once we have the queued/running/finished mechanics
-		// return da.mq.Delete(ctx, mCall)
+		// return cda.mq.Delete(ctx, mCall)
 	}
 	return nil
 }
 
-// Close calls close on the underlying Datastore and MessageQueue. If the Logstore
+type noAsyncEnqueueAccess struct{}
-// and Datastore are different, it will call Close on the Logstore as well.
+
-func (da *directDataAccess) Close() error {
+func (noAsyncEnqueueAccess) Enqueue(ctx context.Context, mCall *models.Call) error {
-	err := da.ds.Close()
+	return models.ErrAsyncUnsupported
-	if ls, ok := da.ds.(models.LogStore); ok && ls != da.ls {
-		if daErr := da.ls.Close(); daErr != nil {
-			err = daErr
 }
-	}
+
-	if mqErr := da.mq.Close(); mqErr != nil {
+//NewUnsupportedEnqueueAccess is a backstop that errors when you try to enqueue an async operation on a server that doesn't support async
-		err = mqErr
+func NewUnsupportedAsyncEnqueueAccess() EnqueueDataAccess {
-	}
+	return &noAsyncEnqueueAccess{}
-	return err
 }

api/agent/hybrid/client.go

@@ -39,7 +39,7 @@ func NewClient(u string) (agent.DataAccess, error) {
 	if uri.Scheme == "" {
 		uri.Scheme = "http"
 	}
-	host := uri.Scheme + "://" + uri.Host + "/v1/"
+	host := uri.Scheme + "://" + uri.Host + "/v2/"
 
 	httpClient := &http.Client{
 		Timeout: 60 * time.Second,
@@ -66,11 +66,13 @@ func NewClient(u string) (agent.DataAccess, error) {
 	}, nil
 }
 
+var noQuery = map[string]string{}
+
 func (cl *client) Enqueue(ctx context.Context, c *models.Call) error {
 	ctx, span := trace.StartSpan(ctx, "hybrid_client_enqueue")
 	defer span.End()
 
-	err := cl.do(ctx, c, nil, "PUT", "runner", "async")
+	err := cl.do(ctx, c, nil, "PUT", noQuery, "runner", "async")
 	return err
 }
 
@@ -81,7 +83,7 @@ func (cl *client) Dequeue(ctx context.Context) (*models.Call, error) {
 	var c struct {
 		C []*models.Call `json:"calls"`
 	}
-	err := cl.do(ctx, nil, &c, "GET", "runner", "async")
+	err := cl.do(ctx, nil, &c, "GET", noQuery, "runner", "async")
 	if len(c.C) > 0 {
 		return c.C[0], nil
 	}
@@ -92,7 +94,7 @@ func (cl *client) Start(ctx context.Context, c *models.Call) error {
 	ctx, span := trace.StartSpan(ctx, "hybrid_client_start")
 	defer span.End()
 
-	err := cl.do(ctx, c, nil, "POST", "runner", "start")
+	err := cl.do(ctx, c, nil, "POST", noQuery, "runner", "start")
 	return err
 }
 
@@ -114,7 +116,7 @@ func (cl *client) Finish(ctx context.Context, c *models.Call, r io.Reader, async
 	}
 
 	// TODO add async bit to query params or body
-	err = cl.do(ctx, bod, nil, "POST", "runner", "finish")
+	err = cl.do(ctx, bod, nil, "POST", noQuery, "runner", "finish")
 	return err
 }
 
@@ -123,21 +125,25 @@ func (cl *client) GetAppID(ctx context.Context, appName string) (string, error)
 	defer span.End()
 
 	var a struct {
-		A models.App `json:"app"`
+		Items []*models.App `json:"items"`
 	}
-	err := cl.do(ctx, nil, &a, "GET", "apps", appName)
+
-	return a.A.ID, err
+	err := cl.do(ctx, nil, &a, "GET", map[string]string{"name": appName}, "apps")
+
+	if len(a.Items) == 0 {
+		return "", errors.New("app not found")
+	}
+
+	return a.Items[0].ID, err
 }
 
 func (cl *client) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
-	ctx, span := trace.StartSpan(ctx, "hybrid_client_get_app_id")
+	ctx, span := trace.StartSpan(ctx, "hybrid_client_get_app_by_id")
 	defer span.End()
 
-	var a struct {
+	var a models.App
-		A models.App `json:"app"`
+	err := cl.do(ctx, nil, &a, "GET", noQuery, "apps", appID)
-	}
+	return &a, err
-	err := cl.do(ctx, nil, &a, "GET", "runner", "apps", appID)
-	return &a.A, err
 }
 
 func (cl *client) GetRoute(ctx context.Context, appID, route string) (*models.Route, error) {
@@ -145,11 +151,30 @@ func (cl *client) GetRoute(ctx context.Context, appID, route string) (*models.Ro
 	defer span.End()
 
 	// TODO trim prefix is pretty odd here eh?
-	var r struct {
+	var r = models.Route{}
-		R models.Route `json:"route"`
+	err := cl.do(ctx, nil, &r, "GET", noQuery, "runner", "apps", appID, "routes", strings.TrimPrefix(route, "/"))
+	return &r, err
 }
-	err := cl.do(ctx, nil, &r, "GET", "runner", "apps", appID, "routes", strings.TrimPrefix(route, "/"))
+
-	return &r.R, err
+func (cl *client) GetTriggerBySource(ctx context.Context, appID string, triggerType, source string) (*models.Trigger, error) {
+	ctx, span := trace.StartSpan(ctx, "hybrid_client_get_trigger_by_source")
+	defer span.End()
+
+	var trigger models.Trigger
+	err := cl.do(ctx, nil, &trigger, "GET", noQuery, "runner", "apps", appID, "triggerBySource", triggerType, source)
+	return &trigger, err
+}
+
+func (cl *client) GetFnByID(ctx context.Context, fnID string) (*models.Fn, error) {
+	ctx, span := trace.StartSpan(ctx, "hybrid_client_get_fn_by_id")
+	defer span.End()
+
+	var fn models.Fn
+	err := cl.do(ctx, nil, &fn, "GET", noQuery, "fns", fnID)
+	if err != nil {
+		return nil, err
+	}
+	return &fn, nil
 }
 
 type httpErr struct {
@@ -157,7 +182,7 @@ type httpErr struct {
 	error
 }
 
-func (cl *client) do(ctx context.Context, request, result interface{}, method string, url ...string) error {
+func (cl *client) do(ctx context.Context, request, result interface{}, method string, query map[string]string, url ...string) error {
 	// TODO determine policy (should we count to infinity?)
 
 	var b common.Backoff
@@ -170,7 +195,7 @@ func (cl *client) do(ctx context.Context, request, result interface{}, method st
 		}
 
 		// TODO this isn't re-using buffers very efficiently, but retries should be rare...
-		err = cl.once(ctx, request, result, method, url...)
+		err = cl.once(ctx, request, result, method, query, url...)
 		switch err := err.(type) {
 		case nil:
 			return nil
@@ -192,7 +217,7 @@ func (cl *client) do(ctx context.Context, request, result interface{}, method st
 	return err
 }
 
-func (cl *client) once(ctx context.Context, request, result interface{}, method string, url ...string) error {
+func (cl *client) once(ctx context.Context, request, result interface{}, method string, query map[string]string, path ...string) error {
 	ctx, span := trace.StartSpan(ctx, "hybrid_client_http_do")
 	defer span.End()
 
@@ -204,7 +229,7 @@ func (cl *client) once(ctx context.Context, request, result interface{}, method
 		}
 	}
 
-	req, err := http.NewRequest(method, cl.url(url...), &b)
+	req, err := http.NewRequest(method, cl.url(query, path...), &b)
 	if err != nil {
 		return err
 	}
@@ -221,16 +246,14 @@ func (cl *client) once(ctx context.Context, request, result interface{}, method
 	if resp.StatusCode >= 300 {
 		// one of our errors
 		var msg struct {
-			Err *struct {
 			Msg string `json:"message"`
-			} `json:"error"`
 		}
 		// copy into a buffer in case it wasn't from us
 		var b bytes.Buffer
 		io.Copy(&b, resp.Body)
 		json.Unmarshal(b.Bytes(), &msg)
-		if msg.Err != nil {
+		if msg.Msg != "" {
-			return &httpErr{code: resp.StatusCode, error: errors.New(msg.Err.Msg)}
+			return &httpErr{code: resp.StatusCode, error: errors.New(msg.Msg)}
 		}
 		return &httpErr{code: resp.StatusCode, error: errors.New(b.String())}
 	}
@@ -245,8 +268,20 @@ func (cl *client) once(ctx context.Context, request, result interface{}, method
 	return nil
 }
 
-func (cl *client) url(args ...string) string {
+func (cl *client) url(query map[string]string, args ...string) string {
-	return cl.base + strings.Join(args, "/")
+
+	var queryValues = make(url.Values)
+	for k, v := range query {
+		queryValues.Add(k, v)
+	}
+	queryString := queryValues.Encode()
+
+	baseUrl := cl.base + strings.Join(args, "/")
+
+	if queryString != "" {
+		baseUrl = baseUrl + "?" + queryString
+	}
+	return baseUrl
 }
 
 func (cl *client) Close() error {

api/agent/hybrid/nop.go

@@ -13,6 +13,18 @@ import (
 // nopDataStore implements agent.DataAccess
 type nopDataStore struct{}
 
+func (cl *nopDataStore) GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*models.Trigger, error) {
+	ctx, span := trace.StartSpan(ctx, "nop_datastore_get_trigger_by_source")
+	defer span.End()
+	return nil, errors.New("should not call GetTriggerBySource on a NOP data store")
+}
+
+func (cl *nopDataStore) GetFnByID(ctx context.Context, fnId string) (*models.Fn, error) {
+	ctx, span := trace.StartSpan(ctx, "nop_datastore_get_fn_by_id")
+	defer span.End()
+	return nil, errors.New("should not call GetFnByID on a NOP data store")
+}
+
 func NewNopDataStore() (agent.DataAccess, error) {
 	return &nopDataStore{}, nil
 }

api/agent/lb_agent.go

@@ -19,7 +19,7 @@ import (
 
 type lbAgent struct {
 	cfg           AgentConfig
-	da            DataAccess
+	cda           CallHandler
 	callListeners []fnext.CallListener
 	rp            pool.RunnerPool
 	placer        pool.Placer
@@ -50,7 +50,7 @@ func WithLBCallOverrider(fn CallOverrider) LBAgentOption {
 
 // NewLBAgent creates an Agent that knows how to load-balance function calls
 // across a group of runner nodes.
-func NewLBAgent(da DataAccess, rp pool.RunnerPool, p pool.Placer, options ...LBAgentOption) (Agent, error) {
+func NewLBAgent(da CallHandler, rp pool.RunnerPool, p pool.Placer, options ...LBAgentOption) (Agent, error) {
 
 	// Yes, LBAgent and Agent both use an AgentConfig.
 	cfg, err := NewAgentConfig()
@@ -60,7 +60,7 @@ func NewLBAgent(da DataAccess, rp pool.RunnerPool, p pool.Placer, options ...LBA
 
 	a := &lbAgent{
 		cfg:    *cfg,
-		da:     da,
+		cda:    da,
 		rp:     rp,
 		placer: p,
 		shutWg: common.NewWaitGroup(),
@@ -93,23 +93,6 @@ func (a *lbAgent) fireAfterCall(ctx context.Context, call *models.Call) error {
 	return fireAfterCallFun(a.callListeners, ctx, call)
 }
 
-// implements Agent
-// GetAppID is to get the match of an app name to its ID
-func (a *lbAgent) GetAppID(ctx context.Context, appName string) (string, error) {
-	return a.da.GetAppID(ctx, appName)
-}
-
-// implements Agent
-// GetAppByID is to get the app by ID
-func (a *lbAgent) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
-	return a.da.GetAppByID(ctx, appID)
-}
-
-// implements Agent
-func (a *lbAgent) GetRoute(ctx context.Context, appID string, path string) (*models.Route, error) {
-	return a.da.GetRoute(ctx, appID, path)
-}
-
 // implements Agent
 func (a *lbAgent) GetCall(opts ...CallOpt) (Call, error) {
 	var c call
@@ -144,7 +127,7 @@ func (a *lbAgent) GetCall(opts ...CallOpt) (Call, error) {
 	setupCtx(&c)
 
 	c.isLB = true
-	c.da = a.da
+	c.handler = a.cda
 	c.ct = a
 	c.stderr = &nullReadWriter{}
 	c.slotHashId = getSlotQueueKey(&c)

api/agent/pure_runner.go

@@ -17,7 +17,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	runner "github.com/fnproject/fn/api/agent/grpc"
+	"github.com/fnproject/fn/api/agent/grpc"
 	"github.com/fnproject/fn/api/common"
 	"github.com/fnproject/fn/api/models"
 	"github.com/fnproject/fn/fnext"
@@ -494,26 +494,11 @@ type pureRunner struct {
 	inflight   int32
 }
 
-// implements Agent
-func (pr *pureRunner) GetAppID(ctx context.Context, appName string) (string, error) {
-	return pr.a.GetAppID(ctx, appName)
-}
-
-// implements Agent
-func (pr *pureRunner) GetAppByID(ctx context.Context, appID string) (*models.App, error) {
-	return pr.a.GetAppByID(ctx, appID)
-}
-
 // implements Agent
 func (pr *pureRunner) GetCall(opts ...CallOpt) (Call, error) {
 	return pr.a.GetCall(opts...)
 }
 
-// implements Agent
-func (pr *pureRunner) GetRoute(ctx context.Context, appID string, path string) (*models.Route, error) {
-	return pr.a.GetRoute(ctx, appID, path)
-}
-
 // implements Agent
 func (pr *pureRunner) Submit(Call) error {
 	return errors.New("Submit cannot be called directly in a Pure Runner.")
@@ -536,11 +521,6 @@ func (pr *pureRunner) AddCallListener(cl fnext.CallListener) {
 	pr.a.AddCallListener(cl)
 }
 
-// implements Agent
-func (pr *pureRunner) Enqueue(context.Context, *models.Call) error {
-	return errors.New("Enqueue cannot be called directly in a Pure Runner.")
-}
-
 func (pr *pureRunner) spawnSubmit(state *callHandle) {
 	go func() {
 		err := pr.a.Submit(state.c)
@@ -653,9 +633,9 @@ func (pr *pureRunner) Status(ctx context.Context, _ *empty.Empty) (*runner.Runne
 	}, nil
 }
 
-func DefaultPureRunner(cancel context.CancelFunc, addr string, da DataAccess, cert string, key string, ca string) (Agent, error) {
+func DefaultPureRunner(cancel context.CancelFunc, addr string, da CallHandler, cert string, key string, ca string) (Agent, error) {
 
-	agent := New(da, WithoutAsyncDequeue())
+	agent := New(da)
 
 	// WARNING: SSL creds are optional.
 	if cert == "" || key == "" || ca == "" {

api/agent/slots.go

@@ -278,6 +278,7 @@ func (a *slotQueueMgr) deleteSlotQueue(slots *slotQueue) bool {
 	return isDeleted
 }
 
+// TODO this should be at least SHA-256 or more
 var shapool = &sync.Pool{New: func() interface{} { return sha1.New() }}
 
 // TODO do better; once we have app+route versions this function

api/const.go

@@ -20,4 +20,9 @@ const (
 	ParamCallID string = "call"
 	// ParamFnID is the url path parameter for fn id
 	ParamFnID string = "fnID"
+	// ParamTriggerSource is the triggers source parameter
+	ParamTriggerSource string = "triggerSource"
+
+	//ParamTriggerType is the trigger type parameter - only used in hybrid API
+	ParamTriggerType string = "triggerType"
 )

api/datastore/datastoretest/test.go

@@ -11,7 +11,6 @@ import (
 	"log"
 	"math/rand"
 	"sort"
-	"sync/atomic"
 	"testing"
 	"time"
 
@@ -52,18 +51,21 @@ type ResourceProvider interface {
 
 // BasicResourceProvider supplies simple objects and can be used as a base for custom resource providers
 type BasicResourceProvider struct {
-	idCount uint32
+	rand *rand.Rand
 }
 
 // DataStoreFunc provides an instance of a data store
 type DataStoreFunc func(*testing.T) models.Datastore
 
+//NewBasicResourceProvider creates a dumb resource provider that generates resources that have valid, random names (and other unique attributes)
 func NewBasicResourceProvider() ResourceProvider {
-	return &BasicResourceProvider{}
+	return &BasicResourceProvider{
+		rand: rand.New(rand.NewSource(time.Now().UnixNano())),
+	}
 }
 
 func (brp *BasicResourceProvider) NextID() uint32 {
-	return atomic.AddUint32(&brp.idCount, rand.Uint32())
+	return brp.rand.Uint32()
 }
 
 func (brp *BasicResourceProvider) DefaultCtx() context.Context {
@@ -86,7 +88,7 @@ func (brp *BasicResourceProvider) ValidTrigger(appId, funcId string) *models.Tri
 		AppID:  appId,
 		FnID:   funcId,
 		Type:   "http",
-		Source: "ASource",
+		Source: fmt.Sprintf("/source_%09d", brp.NextID()),
 	}
 
 	return trigger
@@ -1241,7 +1243,24 @@ func RunTriggersTest(t *testing.T, dsf DataStoreFunc, rp ResourceProvider) {
 				t.Fatalf("expected empty trigger list and no error, but got list [%v] and err %s", triggers.Items, err)
 			}
 		})
+		t.Run("duplicate trigger source of same type on same app", func(t *testing.T) {
+			h := NewHarness(t, ctx, ds)
+			defer h.Cleanup()
+			app := h.GivenAppInDb(rp.ValidApp())
+			fn := h.GivenFnInDb(rp.ValidFn(app.ID))
+			origT := h.GivenTriggerInDb(rp.ValidTrigger(app.ID, fn.ID))
 
+			newT := rp.ValidTrigger(app.ID, fn.ID)
+
+			newT.Source = origT.Source
+
+			_, err := ds.InsertTrigger(ctx, newT)
+
+			if err != models.ErrTriggerSourceExists {
+				t.Errorf("Expecting to fail with duplicate source on same app, got %s", err)
+			}
+			//todo ensure this doesn't apply when type is not equal
+		})
 		t.Run("app id not same as fn id ", func(t *testing.T) {
 			h := NewHarness(t, ctx, ds)
 			defer h.Cleanup()
@@ -1532,6 +1551,39 @@ func RunTriggersTest(t *testing.T, dsf DataStoreFunc, rp ResourceProvider) {
 	})
 }
 
+func RunTriggerBySourceTests(t *testing.T, dsf DataStoreFunc, rp ResourceProvider) {
+
+	t.Run("http_trigger_access", func(t *testing.T) {
+		ds := dsf(t)
+		ctx := rp.DefaultCtx()
+		t.Run("get_non_existant_trigger", func(t *testing.T) {
+			_, err := ds.GetTriggerBySource(ctx, "none", "http", "source")
+			if err != models.ErrTriggerNotFound {
+				t.Fatalf("Expecting trigger not found, got %s", err)
+			}
+		})
+
+		t.Run("get_trigger_specific_http_route", func(t *testing.T) {
+			h := NewHarness(t, ctx, ds)
+			defer h.Cleanup()
+			testApp := h.GivenAppInDb(rp.ValidApp())
+			testFn := h.GivenFnInDb(rp.ValidFn(testApp.ID))
+			testTrigger := h.GivenTriggerInDb(rp.ValidTrigger(testApp.ID, testFn.ID))
+			trigger, err := ds.GetTriggerBySource(ctx, testApp.ID, testTrigger.Type, testTrigger.Source)
+
+			if err != nil {
+				t.Fatalf("Expecting trigger, got error  %s", err)
+			}
+
+			if !trigger.Equals(testTrigger) {
+				t.Errorf("Expecting trigger %#v got %#v", testTrigger, trigger)
+			}
+		})
+
+	})
+
+}
+
 func RunAllTests(t *testing.T, dsf DataStoreFunc, rp ResourceProvider) {
 	buf := setLogBuffer()
 	defer func() {
@@ -1544,5 +1596,6 @@ func RunAllTests(t *testing.T, dsf DataStoreFunc, rp ResourceProvider) {
 	RunRoutesTest(t, dsf, rp)
 	RunFnsTest(t, dsf, rp)
 	RunTriggersTest(t, dsf, rp)
+	RunTriggerBySourceTests(t, dsf, rp)
 
 }

api/datastore/internal/datastoreutil/metrics.go

@@ -16,6 +16,12 @@ type metricds struct {
 	ds models.Datastore
 }
 
+func (m *metricds) GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*models.Trigger, error) {
+	ctx, span := trace.StartSpan(ctx, "ds_get_trigger_by_source")
+	defer span.End()
+	return m.ds.GetTriggerBySource(ctx, appId, triggerType, source)
+}
+
 func (m *metricds) GetAppID(ctx context.Context, appName string) (string, error) {
 	ctx, span := trace.StartSpan(ctx, "ds_get_app_id")
 	defer span.End()

api/datastore/mock.go

@@ -28,6 +28,18 @@ func NewMock() models.Datastore {
 	return NewMockInit()
 }
 
+var _ models.Datastore = &mock{}
+
+func (m *mock) GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*models.Trigger, error) {
+	for _, t := range m.Triggers {
+		if t.AppID == appId && t.Type == triggerType && t.Source == source {
+			return t, nil
+		}
+	}
+
+	return nil, models.ErrTriggerNotFound
+}
+
 // args helps break tests less if we change stuff
 func NewMockInit(args ...interface{}) models.Datastore {
 	var mocker mock
@@ -416,6 +428,12 @@ func (m *mock) InsertTrigger(ctx context.Context, trigger *models.Trigger) (*mod
 				t.Name == trigger.Name) {
 			return nil, models.ErrTriggerExists
 		}
+
+		if t.AppID == trigger.AppID &&
+			t.Source == trigger.Source &&
+			t.Type == trigger.Type {
+			return nil, models.ErrTriggerSourceExists
+		}
 	}
 
 	cl := trigger.Clone()

api/datastore/sql/sql.go

@@ -127,6 +127,8 @@ const (
 	triggerSelector   = `SELECT id,name,app_id,fn_id,type,source,annotations,created_at,updated_at FROM triggers`
 	triggerIDSelector = triggerSelector + ` WHERE id=?`
 
+	triggerIDSourceSelector = triggerSelector + ` WHERE app_id=? AND type=? AND source=?`
+
 	EnvDBPingMaxRetries = "FN_DS_DB_PING_MAX_RETRIES"
 )
 
@@ -1185,6 +1187,8 @@ func (ds *SQLStore) InsertTrigger(ctx context.Context, newTrigger *models.Trigge
 		if err := r.Scan(new(int)); err != nil {
 			if err == sql.ErrNoRows {
 				return models.ErrAppsNotFound
+			} else if err != nil {
+				return err
 			}
 		}
 
@@ -1194,12 +1198,23 @@ func (ds *SQLStore) InsertTrigger(ctx context.Context, newTrigger *models.Trigge
 		if err := r.Scan(&app_id); err != nil {
 			if err == sql.ErrNoRows {
 				return models.ErrFnsNotFound
+			} else if err != nil {
+				return err
 			}
 		}
 		if app_id != trigger.AppID {
 			return models.ErrTriggerFnIDNotSameApp
 		}
 
+		query = tx.Rebind(`SELECT 1 FROM triggers WHERE app_id=? AND type=? and source=?`)
+		r = tx.QueryRowContext(ctx, query, trigger.AppID, trigger.Type, trigger.Source)
+		err := r.Scan(new(int))
+		if err == nil {
+			return models.ErrTriggerSourceExists
+		} else if err != sql.ErrNoRows {
+			return err
+		}
+
 		query = tx.Rebind(`INSERT INTO triggers (
 			id,
 			name,
@@ -1318,8 +1333,7 @@ func (ds *SQLStore) GetTriggerByID(ctx context.Context, triggerID string) (*mode
 	err := row.StructScan(&trigger)
 	if err == sql.ErrNoRows {
 		return nil, models.ErrTriggerNotFound
-	}
+	} else if err != nil {
-	if err != nil {
 		return nil, err
 	}
 
@@ -1403,10 +1417,26 @@ func (ds *SQLStore) GetTriggers(ctx context.Context, filter *models.TriggerFilte
 		if err == sql.ErrNoRows {
 			return res, nil // no error for empty list
 		}
+		return nil, err
 	}
 	return res, nil
 }
 
+func (ds *SQLStore) GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*models.Trigger, error) {
+	var trigger models.Trigger
+
+	query := ds.db.Rebind(triggerIDSourceSelector)
+	row := ds.db.QueryRowxContext(ctx, query, appId, triggerType, source)
+
+	err := row.StructScan(&trigger)
+	if err == sql.ErrNoRows {
+		return nil, models.ErrTriggerNotFound
+	} else if err != nil {
+		return nil, err
+	}
+	return &trigger, nil
+}
+
 // Close closes the database, releasing any open resources.
 func (ds *SQLStore) Close() error {
 	return ds.db.Close()

api/models/call.go

@@ -149,6 +149,12 @@ type Call struct {
 
 	// App this call belongs to.
 	AppID string `json:"app_id" db:"app_id"`
+
+	// Trigger this call belongs to.
+	TriggerID string `json:"trigger_id" db:"trigger_id"`
+
+	// Fn this call belongs to.
+	FnID string `json:"fn_id" db:"fn_id"`
 }
 
 type CallFilter struct {

api/models/datastore.go

@@ -93,6 +93,9 @@ type Datastore interface {
 	// Return ErrDatastoreEmptyAppId if no AppID set in the filter
 	GetTriggers(ctx context.Context, filter *TriggerFilter) (*TriggerList, error)
 
+	// GetTriggerBySource loads a trigger by type and source ID - this is only needed when the data store is also used for agent read access
+	GetTriggerBySource(ctx context.Context, appId string, triggerType, source string) (*Trigger, error)
+
 	// implements io.Closer to shutdown
 	io.Closer
 }

api/models/error.go

@@ -198,6 +198,11 @@ var (
 		code:  http.StatusBadRequest,
 		error: fmt.Errorf("Invalid annotation change, new key(s) exceed maximum permitted number of annotations keys (%d)", maxAnnotationsKeys),
 	}
+
+	ErrAsyncUnsupported = err{
+		code:  http.StatusBadRequest,
+		error: errors.New("Async functions are not supported on this server"),
+	}
 )
 
 // APIError any error that implements this interface will return an API response

api/models/trigger.go

@@ -10,9 +10,10 @@ import (
 	"github.com/fnproject/fn/api/common"
 )
 
-// For want of a better place to put this it's here
+// TriggerHTTPEndpointAnnotation is the annotation that exposes the HTTP trigger endpoint For want of a better place to put this it's here
 const TriggerHTTPEndpointAnnotation = "fnproject.io/trigger/httpEndpoint"
 
+// Trigger represents a binding between a Function and an external event source
 type Trigger struct {
 	ID          string          `json:"id" db:"id"`
 	Name        string          `json:"name" db:"name"`
@@ -25,6 +26,7 @@ type Trigger struct {
 	Annotations Annotations     `json:"annotations,omitempty" db:"annotations"`
 }
 
+// Equals compares two triggers for semantic equality  it ignores timestamp fields but includes annotations
 func (t *Trigger) Equals(t2 *Trigger) bool {
 	eq := true
 	eq = eq && t.ID == t2.ID
@@ -39,6 +41,7 @@ func (t *Trigger) Equals(t2 *Trigger) bool {
 	return eq
 }
 
+// EqualsWithAnnotationSubset is equivalent to Equals except it accepts cases where t's annotations are strict subset of t2
 func (t *Trigger) EqualsWithAnnotationSubset(t2 *Trigger) bool {
 	eq := true
 	eq = eq && t.ID == t2.ID
@@ -53,14 +56,17 @@ func (t *Trigger) EqualsWithAnnotationSubset(t2 *Trigger) bool {
 	return eq
 }
 
+//TriggerTypeHTTP represents an HTTP trigger
 const TriggerTypeHTTP = "http"
 
 var triggerTypes = []string{TriggerTypeHTTP}
 
+//ValidTriggerTypes lists the supported trigger types in this service
 func ValidTriggerTypes() []string {
 	return triggerTypes
 }
 
+//ValidTriggerType checks that a given trigger type is valid on this service
 func ValidTriggerType(a string) bool {
 	for _, b := range triggerTypes {
 		if b == a {
@@ -71,46 +77,63 @@ func ValidTriggerType(a string) bool {
 }
 
 var (
+	//ErrTriggerIDProvided indicates that a trigger ID was specified when it shouldn't have been
 	ErrTriggerIDProvided = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("ID cannot be provided for Trigger creation"),
 	}
+	//ErrTriggerIDMismatch indicates an ID was provided that did not match the ID of the corresponding operation/call
 	ErrTriggerIDMismatch = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("ID in path does not match ID in body"),
 	}
+	//ErrTriggerMissingName - name not specified on a trigger object
 	ErrTriggerMissingName = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Missing name on Trigger")}
+	//ErrTriggerTooLongName - name exceeds maximum permitted name
 	ErrTriggerTooLongName = err{
 		code:  http.StatusBadRequest,
 		error: fmt.Errorf("Trigger name must be %v characters or less", MaxTriggerName)}
+	//ErrTriggerInvalidName - name does not comply with naming spec
 	ErrTriggerInvalidName = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Invalid name for Trigger")}
+	//ErrTriggerMissingAppID - no API id specified on trigger creation
 	ErrTriggerMissingAppID = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Missing App ID on Trigger")}
+	//ErrTriggerMissingFnID - no FNID specified on trigger creation
 	ErrTriggerMissingFnID = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Missing Fn ID on Trigger")}
+	//ErrTriggerFnIDNotSameApp - specified Fn does not belong to the same app as the provided AppID
 	ErrTriggerFnIDNotSameApp = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Invalid Fn ID - not owned by specified app")}
+	//ErrTriggerTypeUnknown - unsupported trigger type
 	ErrTriggerTypeUnknown = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Trigger Type Not Supported")}
+	//ErrTriggerMissingSource - no source spceified for trigger
 	ErrTriggerMissingSource = err{
 		code:  http.StatusBadRequest,
 		error: errors.New("Missing Trigger Source")}
+	//ErrTriggerNotFound - trigger not found
 	ErrTriggerNotFound = err{
 		code:  http.StatusNotFound,
 		error: errors.New("Trigger not found")}
+	//ErrTriggerExists - a trigger with the specified name already exists
 	ErrTriggerExists = err{
 		code:  http.StatusConflict,
 		error: errors.New("Trigger already exists")}
+	//ErrTriggerSourceExists - another trigger on the same app has the same source and type
+	ErrTriggerSourceExists = err{
+		code:  http.StatusConflict,
+		error: errors.New("Trigger with the same type and source exists on this app")}
 )
 
+//Validate checks that trigger has valid data for inserting into a store
 func (t *Trigger) Validate() error {
 	if t.Name == "" {
 		return ErrTriggerMissingName
@@ -149,20 +172,15 @@ func (t *Trigger) Validate() error {
 	return nil
 }
 
+// Clone creates a deep copy of a trigger
 func (t *Trigger) Clone() *Trigger {
 	clone := new(Trigger)
 	*clone = *t // shallow copy
-
+	// annotations are immutable via their interface so can be shallow copied
-	if t.Annotations != nil {
-		clone.Annotations = make(Annotations, len(t.Annotations))
-		for k, v := range t.Annotations {
-			// TODO technically, we need to deep copy the bytes
-			clone.Annotations[k] = v
-		}
-	}
 	return clone
 }
 
+// Update applies a change to a trigger
 func (t *Trigger) Update(patch *Trigger) {
 
 	original := t.Clone()
@@ -189,15 +207,20 @@ func (t *Trigger) Update(patch *Trigger) {
 	}
 }
 
+//TriggerFilter is a search criteria on triggers
 type TriggerFilter struct {
-	AppID string // this is exact match
+	//AppID searches for triggers in APP - mandatory
+	AppID string // this is exact match mandatory
+	//FNID searches for triggers belonging to a specific function
 	FnID string // this is exact match
+	//Name is the name of the trigger
 	Name string // exact match
 
 	Cursor  string
 	PerPage int
 }
 
+//TriggerList is a container of triggers returned by search, optionally indicating the next page cursor
 type TriggerList struct {
 	NextCursor string     `json:"next_cursor,omitempty"`
 	Items      []*Trigger `json:"items"`

api/models/trigger_test.go

@@ -5,17 +5,17 @@ import (
 	"testing"
 )
 
-var openEmptyJson = `{"id":"","name":"","app_id":"","fn_id":"","created_at":"0001-01-01T00:00:00.000Z","updated_at":"0001-01-01T00:00:00.000Z","type":"","source":""`
+var openEmptyJSON = `{"id":"","name":"","app_id":"","fn_id":"","created_at":"0001-01-01T00:00:00.000Z","updated_at":"0001-01-01T00:00:00.000Z","type":"","source":""`
 
-var triggerJsonCases = []struct {
+var triggerJSONCases = []struct {
 	val       *Trigger
 	valString string
 }{
-	{val: &Trigger{}, valString: openEmptyJson + "}"},
+	{val: &Trigger{}, valString: openEmptyJSON + "}"},
 }
 
 func TestTriggerJsonMarshalling(t *testing.T) {
-	for _, tc := range triggerJsonCases {
+	for _, tc := range triggerJSONCases {
 		v, err := json.Marshal(tc.val)
 		if err != nil {
 			t.Fatalf("Failed to marshal json into %s: %v", tc.valString, err)

api/server/apps_v1_get.go

@@ -8,7 +8,7 @@ import (
 )
 
 // TODO: Deprecate with V1 API
-func (s *Server) handleV1AppGetByName(c *gin.Context) {
+func (s *Server) handleV1AppGetByIdOrName(c *gin.Context) {
 	ctx := c.Request.Context()
 
 	param := c.MustGet(api.AppID).(string)

api/server/gin_middlewares.go

@@ -186,13 +186,13 @@ func AppFromContext(ctx context.Context) string {
 	return r
 }
 
-func (s *Server) checkAppPresenceByNameAtRunner() gin.HandlerFunc {
+func (s *Server) checkAppPresenceByNameAtLB() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		ctx, _ := common.LoggerWithFields(c.Request.Context(), extractFields(c))
 
 		appName := c.Param(api.ParamAppName)
 		if appName != "" {
-			appID, err := s.agent.GetAppID(ctx, appName)
+			appID, err := s.lbReadAccess.GetAppID(ctx, appName)
 			if err != nil {
 				handleV1ErrorResponse(c, err)
 				c.Abort()

api/server/hybrid.go

@@ -5,9 +5,14 @@ import (
 	"strings"
 	"time"
 
+	"errors"
+	"fmt"
+	"github.com/fnproject/fn/api"
 	"github.com/fnproject/fn/api/common"
 	"github.com/fnproject/fn/api/models"
 	"github.com/gin-gonic/gin"
+	"net/http"
+	"path"
 )
 
 func (s *Server) handleRunnerEnqueue(c *gin.Context) {
@@ -18,9 +23,9 @@ func (s *Server) handleRunnerEnqueue(c *gin.Context) {
 	err := c.BindJSON(&call)
 	if err != nil {
 		if models.IsAPIError(err) {
-			handleV1ErrorResponse(c, err)
+			handleErrorResponse(c, err)
 		} else {
-			handleV1ErrorResponse(c, models.ErrInvalidJSON)
+			handleErrorResponse(c, models.ErrInvalidJSON)
 		}
 		return
 	}
@@ -39,7 +44,7 @@ func (s *Server) handleRunnerEnqueue(c *gin.Context) {
 	call.Status = "queued"
 	_, err = s.mq.Push(ctx, &call)
 	if err != nil {
-		handleV1ErrorResponse(c, err)
+		handleErrorResponse(c, err)
 		return
 	}
 
@@ -50,9 +55,7 @@ func (s *Server) handleRunnerEnqueue(c *gin.Context) {
 	// will ensure the call exists in the db in 'running' state there.
 	// s.datastore.InsertCall(ctx, &call)
 
-	c.JSON(200, struct {
+	c.String(http.StatusNoContent, "")
-		M string `json:"msg"`
-	}{M: "enqueued call"})
 }
 
 func (s *Server) handleRunnerDequeue(c *gin.Context) {
@@ -70,7 +73,7 @@ func (s *Server) handleRunnerDequeue(c *gin.Context) {
 	for {
 		call, err := s.mq.Reserve(ctx)
 		if err != nil {
-			handleV1ErrorResponse(c, err)
+			handleErrorResponse(c, err)
 			return
 		}
 		if call != nil {
@@ -97,9 +100,9 @@ func (s *Server) handleRunnerStart(c *gin.Context) {
 	err := c.BindJSON(&call)
 	if err != nil {
 		if models.IsAPIError(err) {
-			handleV1ErrorResponse(c, err)
+			handleErrorResponse(c, err)
 		} else {
-			handleV1ErrorResponse(c, models.ErrInvalidJSON)
+			handleErrorResponse(c, models.ErrInvalidJSON)
 		}
 		return
 	}
@@ -129,7 +132,7 @@ func (s *Server) handleRunnerStart(c *gin.Context) {
 	// TODO change this to only delete message if the status change fails b/c it already ran
 	// after messaging semantics change
 	if err := s.mq.Delete(ctx, &call); err != nil { // TODO change this to take some string(s), not a whole call
-		handleV1ErrorResponse(c, err)
+		handleErrorResponse(c, err)
 		return
 	}
 	//}
@@ -137,9 +140,7 @@ func (s *Server) handleRunnerStart(c *gin.Context) {
 	//return
 	//}
 
-	c.JSON(200, struct {
+	c.String(http.StatusNoContent, "")
-		M string `json:"msg"`
-	}{M: "slingshot: engage"})
 }
 
 func (s *Server) handleRunnerFinish(c *gin.Context) {
@@ -152,9 +153,9 @@ func (s *Server) handleRunnerFinish(c *gin.Context) {
 	err := c.BindJSON(&body)
 	if err != nil {
 		if models.IsAPIError(err) {
-			handleV1ErrorResponse(c, err)
+			handleErrorResponse(c, err)
 		} else {
-			handleV1ErrorResponse(c, models.ErrInvalidJSON)
+			handleErrorResponse(c, models.ErrInvalidJSON)
 		}
 		return
 	}
@@ -184,7 +185,49 @@ func (s *Server) handleRunnerFinish(c *gin.Context) {
 	//// note: Not returning err here since the job could have already finished successfully.
 	//}
 
-	c.JSON(200, struct {
+	c.String(http.StatusNoContent, "")
-		M string `json:"msg"`
+}
-	}{M: "good night, sweet prince"})
+
+// This is a sort of interim route  that is V2 API style but due for deprectation
+func (s *Server) handleRunnerGetRoute(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	routePath := path.Clean("/" + c.MustGet(api.Path).(string))
+	route, err := s.datastore.GetRoute(ctx, c.MustGet(api.AppID).(string), routePath)
+	if err != nil {
+		handleErrorResponse(c, err)
+		return
+	}
+
+	c.JSON(http.StatusOK, route)
+}
+
+func (s *Server) handleRunnerGetTriggerBySource(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	appId := c.MustGet(api.AppID).(string)
+
+	triggerType := c.Param(api.ParamTriggerType)
+	if triggerType == "" {
+		handleErrorResponse(c, errors.New("no trigger type in request"))
+		return
+	}
+	triggerSource := strings.TrimPrefix(c.Param(api.ParamTriggerSource), "/")
+
+	trigger, err := s.datastore.GetTriggerBySource(ctx, appId, triggerType, triggerSource)
+
+	if err != nil {
+		handleErrorResponse(c, err)
+		return
+	}
+	// Not clear that we really need to annotate the trigger here but ... lets do it just in case.
+	app, err := s.datastore.GetAppByID(ctx, trigger.AppID)
+
+	if err != nil {
+		handleErrorResponse(c, fmt.Errorf("unexpected error - trigger app not available: %s", err))
+	}
+
+	s.triggerAnnotator.AnnotateTrigger(c, app, trigger)
+
+	c.JSON(http.StatusOK, trigger)
 }

api/server/hybrid_test.go

@@ -0,0 +1,69 @@
+package server
+
+import (
+	"bytes"
+	"encoding/json"
+	"github.com/fnproject/fn/api/datastore"
+	"github.com/fnproject/fn/api/id"
+	"github.com/fnproject/fn/api/logs"
+	"github.com/fnproject/fn/api/models"
+	"github.com/fnproject/fn/api/mqs"
+	"net/http"
+	"strings"
+	"testing"
+)
+
+func TestHybridEndpoints(t *testing.T) {
+	buf := setLogBuffer()
+	app := &models.App{ID: "app_id", Name: "myapp"}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Route{{
+			AppID: app.ID,
+			Path:  "yodawg",
+		}},
+	)
+
+	logDB := logs.NewMock()
+
+	srv := testServer(ds, &mqs.Mock{}, logDB, nil /* TODO */, ServerTypeAPI)
+
+	newCallBody := func() string {
+		call := &models.Call{
+			AppID: app.ID,
+			ID:    id.New().String(),
+			Path:  "yodawg",
+			// TODO ?
+		}
+		var b bytes.Buffer
+		json.NewEncoder(&b).Encode(&call)
+		return b.String()
+	}
+
+	for _, test := range []struct {
+		name         string
+		method       string
+		path         string
+		body         string
+		expectedCode int
+	}{
+		// TODO change all these tests to just do an async task in normal order once plumbing is done
+
+		{"post async call", "PUT", "/v2/runner/async", newCallBody(), http.StatusNoContent},
+
+		// TODO this one only works if it's not the same as the first since update isn't hooked up
+		{"finish call", "POST", "/v2/runner/finish", newCallBody(), http.StatusNoContent},
+
+		// TODO these won't work until update works and the agent gets shut off
+		//{"get async call", "GET", "/v1/runner/async", "", http.StatusOK},
+		//{"start call", "POST", "/v1/runner/start", "TODO", http.StatusOK},
+	} {
+		_, rec := routerRequest(t, srv.Router, test.method, test.path, strings.NewReader(test.body))
+
+		if rec.Code != test.expectedCode {
+			t.Log(buf.String())
+			t.Errorf("Test \"%s\": Expected status code to be %d but was %d",
+				test.name, test.expectedCode, rec.Code)
+		}
+	}
+}

api/server/middleware.go

@@ -43,7 +43,7 @@ func (c *middlewareController) CallFunction(w http.ResponseWriter, r *http.Reque
 		c.ginContext.Set(api.AppID, appID)
 	}
 
-	c.server.handleFunctionCall(c.ginContext)
+	c.server.handleV1FunctionCall(c.ginContext)
 	c.ginContext.Abort()
 }
 func (c *middlewareController) FunctionCalled() bool {

api/server/routes_get.go

@@ -1,18 +1,17 @@
 package server
 
 import (
-	"net/http"
-	"path"
-
 	"github.com/fnproject/fn/api"
 	"github.com/gin-gonic/gin"
+	"net/http"
+	"path"
 )
 
-func routeGet(s *Server, appID string, c *gin.Context) {
+func (s *Server) handleRouteGetAPI(c *gin.Context) {
 	ctx := c.Request.Context()
 
 	routePath := path.Clean("/" + c.MustGet(api.Path).(string))
-	route, err := s.datastore.GetRoute(ctx, appID, routePath)
+	route, err := s.datastore.GetRoute(ctx, c.MustGet(api.AppID).(string), routePath)
 	if err != nil {
 		handleV1ErrorResponse(c, err)
 		return
@@ -20,11 +19,3 @@ func routeGet(s *Server, appID string, c *gin.Context) {
 
 	c.JSON(http.StatusOK, routeResponse{"Successfully loaded route", route})
 }
-
-func (s *Server) handleRouteGetAPI(c *gin.Context) {
-	routeGet(s, c.MustGet(api.AppID).(string), c)
-}
-
-func (s *Server) handleRouteGetRunner(c *gin.Context) {
-	routeGet(s, c.MustGet(api.AppID).(string), c)
-}

api/server/runner.go

@@ -17,8 +17,8 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-// handleFunctionCall executes the function, for router handlers
+// handleV1FunctionCall executes the function, for router handlers
-func (s *Server) handleFunctionCall(c *gin.Context) {
+func (s *Server) handleV1FunctionCall(c *gin.Context) {
 	err := s.handleFunctionCall2(c)
 	if err != nil {
 		handleV1ErrorResponse(c, err)
@@ -40,15 +40,20 @@ func (s *Server) handleFunctionCall2(c *gin.Context) error {
 	}
 
 	appID := c.MustGet(api.AppID).(string)
-	app, err := s.agent.GetAppByID(ctx, appID)
+	app, err := s.lbReadAccess.GetAppByID(ctx, appID)
 	if err != nil {
 		return err
 	}
 
+	routePath := path.Clean(p)
+	route, err := s.lbReadAccess.GetRoute(ctx, appID, routePath)
+	if err != nil {
+		return err
+	}
 	// gin sets this to 404 on NoRoute, so we'll just ensure it's 200 by default.
 	c.Status(200) // this doesn't write the header yet
 
-	return s.serve(c, app, path.Clean(p))
+	return s.serve(c, app, route)
 }
 
 var (
@@ -57,7 +62,7 @@ var (
 
 // TODO it would be nice if we could make this have nothing to do with the gin.Context but meh
 // TODO make async store an *http.Request? would be sexy until we have different api format...
-func (s *Server) serve(c *gin.Context, app *models.App, path string) error {
+func (s *Server) serve(c *gin.Context, app *models.App, route *models.Route) error {
 	buf := bufPool.Get().(*bytes.Buffer)
 	buf.Reset()
 	writer := syncResponseWriter{
@@ -75,7 +80,7 @@ func (s *Server) serve(c *gin.Context, app *models.App, path string) error {
 
 	call, err := s.agent.GetCall(
 		agent.WithWriter(&writer), // XXX (reed): order matters [for now]
-		agent.FromRequest(s.agent, app, path, c.Request),
+		agent.FromRequest(app, route, c.Request),
 	)
 	if err != nil {
 		return err
@@ -97,8 +102,7 @@ func (s *Server) serve(c *gin.Context, app *models.App, path string) error {
 		}
 		model.Payload = buf.String()
 
-		// TODO idk where to put this, but agent is all runner really has...
+		err = s.lbEnqueue.Enqueue(c.Request.Context(), model)
-		err = s.agent.Enqueue(c.Request.Context(), model)
 		if err != nil {
 			return err
 		}

api/server/runner_async_test.go

@@ -21,6 +21,8 @@ func testRouterAsync(ds models.Datastore, mq models.MessageQueue, rnr agent.Agen
 		Router:       engine,
 		AdminRouter:  engine,
 		datastore:    ds,
+		lbReadAccess: ds,
+		lbEnqueue:    agent.NewDirectEnqueueAccess(mq),
 		mq:           mq,
 		nodeType:     ServerTypeFull,
 	}

api/server/runner_httptrigger.go

@@ -0,0 +1,152 @@
+package server
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/fnproject/fn/api"
+	"github.com/fnproject/fn/api/agent"
+	"github.com/fnproject/fn/api/common"
+	"github.com/fnproject/fn/api/models"
+	"github.com/gin-gonic/gin"
+	"github.com/sirupsen/logrus"
+)
+
+// handleHTTPTriggerCall executes the function, for router handlers
+func (s *Server) handleHTTPTriggerCall(c *gin.Context) {
+	err := s.handleTriggerHTTPFunctionCall2(c)
+	if err != nil {
+		handleErrorResponse(c, err)
+	}
+}
+
+// handleTriggerHTTPFunctionCall2 executes the function and returns an error
+// Requires the following in the context:
+func (s *Server) handleTriggerHTTPFunctionCall2(c *gin.Context) error {
+	ctx := c.Request.Context()
+	p := c.Param(api.ParamTriggerSource)
+	if p == "" {
+		p = "/"
+	}
+
+	appName := c.Param(api.ParamAppName)
+
+	appID, err := s.lbReadAccess.GetAppID(ctx, appName)
+	if err != nil {
+		return err
+	}
+
+	app, err := s.lbReadAccess.GetAppByID(ctx, appID)
+	if err != nil {
+		return err
+	}
+
+	routePath := p
+
+	trigger, err := s.lbReadAccess.GetTriggerBySource(ctx, appID, "http", routePath)
+
+	if err != nil {
+		return err
+	}
+
+	fn, err := s.lbReadAccess.GetFnByID(ctx, trigger.FnID)
+	if err != nil {
+		return err
+	}
+	// gin sets this to 404 on NoRoute, so we'll just ensure it's 200 by default.
+	c.Status(200) // this doesn't write the header yet
+
+	return s.ServeHTTPTrigger(c, app, fn, trigger)
+}
+
+//ServeHTTPTrigger serves an HTTP trigger for a given app/fn/trigger  based on the current request
+// This is exported to allow extensions to handle their own trigger naming and publishing
+func (s *Server) ServeHTTPTrigger(c *gin.Context, app *models.App, fn *models.Fn, trigger *models.Trigger) error {
+	buf := bufPool.Get().(*bytes.Buffer)
+	buf.Reset()
+	writer := syncResponseWriter{
+		Buffer:  buf,
+		headers: c.Writer.Header(), // copy ref
+	}
+	defer bufPool.Put(buf) // TODO need to ensure this is safe with Dispatch?
+
+	// GetCall can mod headers, assign an id, look up the route/app (cached),
+	// strip params, etc.
+	// this should happen ASAP to turn app name to app ID
+
+	// GetCall can mod headers, assign an id, look up the route/app (cached),
+	// strip params, etc.
+
+	call, err := s.agent.GetCall(
+		agent.WithWriter(&writer), // XXX (reed): order matters [for now]
+		agent.FromHTTPTriggerRequest(app, fn, trigger, c.Request),
+	)
+	if err != nil {
+		return err
+	}
+	model := call.Model()
+	{ // scope this, to disallow ctx use outside of this scope. add id for handleV1ErrorResponse logger
+		ctx, _ := common.LoggerWithFields(c.Request.Context(), logrus.Fields{"id": model.ID})
+		c.Request = c.Request.WithContext(ctx)
+	}
+
+	// TODO TRIGGERWIP  not clear this makes sense here - but it works  so...
+	if model.Type == "async" {
+
+		// TODO we should push this into GetCall somehow (CallOpt maybe) or maybe agent.Queue(Call) ?
+		if c.Request.ContentLength > 0 {
+			buf.Grow(int(c.Request.ContentLength))
+		}
+		_, err := buf.ReadFrom(c.Request.Body)
+		if err != nil {
+			return models.ErrInvalidPayload
+		}
+		model.Payload = buf.String()
+
+		err = s.lbEnqueue.Enqueue(c.Request.Context(), model)
+		if err != nil {
+			return err
+		}
+
+		c.JSON(http.StatusAccepted, map[string]string{"call_id": model.ID})
+		return nil
+	}
+
+	err = s.agent.Submit(call)
+	if err != nil {
+		// NOTE if they cancel the request then it will stop the call (kind of cool),
+		// we could filter that error out here too as right now it yells a little
+		if err == models.ErrCallTimeoutServerBusy || err == models.ErrCallTimeout {
+			// TODO maneuver
+			// add this, since it means that start may not have been called [and it's relevant]
+			c.Writer.Header().Add("XXX-FXLB-WAIT", time.Now().Sub(time.Time(model.CreatedAt)).String())
+		}
+		return err
+	}
+
+	// if they don't set a content-type - detect it
+	if writer.Header().Get("Content-Type") == "" {
+		// see http.DetectContentType, the go server is supposed to do this for us but doesn't appear to?
+		var contentType string
+		jsonPrefix := [1]byte{'{'} // stack allocated
+		if bytes.HasPrefix(buf.Bytes(), jsonPrefix[:]) {
+			// try to detect json, since DetectContentType isn't a hipster.
+			contentType = "application/json; charset=utf-8"
+		} else {
+			contentType = http.DetectContentType(buf.Bytes())
+		}
+		writer.Header().Set("Content-Type", contentType)
+	}
+
+	writer.Header().Set("Content-Length", strconv.Itoa(int(buf.Len())))
+
+	if writer.status > 0 {
+		c.Writer.WriteHeader(writer.status)
+	}
+	io.Copy(c.Writer, &writer)
+
+	return nil
+}

api/server/runner_httptrigger_test.go

@@ -0,0 +1,622 @@
+package server
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+
+	"context"
+	"errors"
+	"github.com/fnproject/fn/api/agent"
+	"github.com/fnproject/fn/api/datastore"
+	"github.com/fnproject/fn/api/logs"
+	"github.com/fnproject/fn/api/models"
+	"github.com/fnproject/fn/api/mqs"
+	"os"
+)
+
+func envTweaker(name, value string) func() {
+	bck, ok := os.LookupEnv(name)
+
+	err := os.Setenv(name, value)
+	if err != nil {
+		panic(err.Error())
+	}
+
+	return func() {
+		var err error
+		if !ok {
+			err = os.Unsetenv(name)
+		} else {
+			err = os.Setenv(name, bck)
+		}
+		if err != nil {
+			panic(err.Error())
+		}
+	}
+}
+
+func testRunner(_ *testing.T, args ...interface{}) (agent.Agent, context.CancelFunc) {
+	ls := logs.NewMock()
+	var mq models.MessageQueue = &mqs.Mock{}
+	for _, a := range args {
+		switch arg := a.(type) {
+		case models.MessageQueue:
+			mq = arg
+		case models.LogStore:
+			ls = arg
+		}
+	}
+	r := agent.New(agent.NewDirectCallDataAccess(ls, mq))
+	return r, func() { r.Close() }
+}
+
+func checkLogs(t *testing.T, tnum int, ds models.LogStore, callID string, expected []string) bool {
+
+	logReader, err := ds.GetLog(context.Background(), "myapp", callID)
+	if err != nil {
+		t.Errorf("Test %d: GetLog for call_id:%s returned err %s",
+			tnum, callID, err.Error())
+		return false
+	}
+
+	logBytes, err := ioutil.ReadAll(logReader)
+	if err != nil {
+		t.Errorf("Test %d: GetLog read IO call_id:%s returned err %s",
+			tnum, callID, err.Error())
+		return false
+	}
+
+	logBody := string(logBytes)
+	maxLog := len(logBody)
+	if maxLog > 1024 {
+		maxLog = 1024
+	}
+
+	for _, match := range expected {
+		if !strings.Contains(logBody, match) {
+			t.Errorf("Test %d: GetLog read IO call_id:%s cannot find: %s in logs: %s",
+				tnum, callID, match, logBody[:maxLog])
+			return false
+		}
+	}
+
+	return true
+}
+
+// implement models.MQ and models.APIError
+type errorMQ struct {
+	error
+	code int
+}
+
+func (mock *errorMQ) Push(context.Context, *models.Call) (*models.Call, error) { return nil, mock }
+func (mock *errorMQ) Reserve(context.Context) (*models.Call, error)            { return nil, mock }
+func (mock *errorMQ) Delete(context.Context, *models.Call) error               { return mock }
+func (mock *errorMQ) Code() int                                                { return mock.code }
+func (mock *errorMQ) Close() error                                             { return nil }
+func TestFailedEnqueue(t *testing.T) {
+	buf := setLogBuffer()
+	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Route{
+			{Path: "/dummy", Image: "dummy/dummy", Type: "async", Memory: 128, Timeout: 30, IdleTimeout: 30, AppID: app.ID},
+		},
+	)
+	err := errors.New("Unable to push task to queue")
+	mq := &errorMQ{err, http.StatusInternalServerError}
+	fnl := logs.NewMock()
+	rnr, cancelrnr := testRunner(t, ds, mq, fnl)
+	defer cancelrnr()
+
+	srv := testServer(ds, mq, fnl, rnr, ServerTypeFull)
+	for i, test := range []struct {
+		path            string
+		body            string
+		method          string
+		expectedCode    int
+		expectedHeaders map[string][]string
+	}{
+		{"/r/myapp/dummy", ``, "POST", http.StatusInternalServerError, nil},
+	} {
+		body := strings.NewReader(test.body)
+		_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
+		if rec.Code != test.expectedCode {
+			t.Log(buf.String())
+			t.Errorf("Test %d: Expected status code to be %d but was %d",
+				i, test.expectedCode, rec.Code)
+		}
+	}
+}
+
+func TestTriggerRunnerGet(t *testing.T) {
+	buf := setLogBuffer()
+	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+	)
+
+	rnr, cancel := testRunner(t, ds)
+	defer cancel()
+	logDB := logs.NewMock()
+	srv := testServer(ds, &mqs.Mock{}, logDB, rnr, ServerTypeFull)
+
+	for i, test := range []struct {
+		path          string
+		body          string
+		expectedCode  int
+		expectedError error
+	}{
+		{"/t/app/route", "", http.StatusNotFound, models.ErrAppsNotFound},
+		{"/t/myapp/route", "", http.StatusNotFound, models.ErrTriggerNotFound},
+	} {
+		_, rec := routerRequest(t, srv.Router, "GET", test.path, nil)
+
+		if rec.Code != test.expectedCode {
+			t.Log(buf.String())
+			t.Fatalf("Test %d: Expected status code for path %s to be %d but was %d",
+				i, test.path, test.expectedCode, rec.Code)
+		}
+
+		if test.expectedError != nil {
+			resp := getErrorResponse(t, rec)
+
+			if !strings.Contains(resp.Message, test.expectedError.Error()) {
+				t.Log(buf.String())
+				t.Errorf("Test %d: Expected error message to have `%s`, but got `%s`",
+					i, test.expectedError.Error(), resp.Message)
+			}
+		}
+	}
+}
+
+func TestTriggerRunnerPost(t *testing.T) {
+	buf := setLogBuffer()
+
+	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+	)
+
+	rnr, cancel := testRunner(t, ds)
+	defer cancel()
+
+	fnl := logs.NewMock()
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, ServerTypeFull)
+
+	for i, test := range []struct {
+		path          string
+		body          string
+		expectedCode  int
+		expectedError error
+	}{
+		{"/t/app/route", `{ "payload": "" }`, http.StatusNotFound, models.ErrAppsNotFound},
+		{"/t/myapp/route", `{ "payload": "" }`, http.StatusNotFound, models.ErrTriggerNotFound},
+	} {
+		body := bytes.NewBuffer([]byte(test.body))
+		_, rec := routerRequest(t, srv.Router, "POST", test.path, body)
+
+		if rec.Code != test.expectedCode {
+			t.Log(buf.String())
+			t.Errorf("Test %d: Expected status code for path %s to be %d but was %d",
+				i, test.path, test.expectedCode, rec.Code)
+		}
+
+		if test.expectedError != nil {
+			resp := getErrorResponse(t, rec)
+			respMsg := resp.Message
+			expMsg := test.expectedError.Error()
+			if respMsg != expMsg && !strings.Contains(respMsg, expMsg) {
+				t.Log(buf.String())
+				t.Errorf("Test %d: Expected error message to have `%s`",
+					i, test.expectedError.Error())
+			}
+		}
+	}
+}
+
+func TestTriggerRunnerExecEmptyBody(t *testing.T) {
+	buf := setLogBuffer()
+	isFailure := false
+
+	defer func() {
+		if isFailure {
+			t.Log(buf.String())
+		}
+	}()
+
+	rCfg := map[string]string{"ENABLE_HEADER": "yes", "ENABLE_FOOTER": "yes"} // enable container start/end header/footer
+	rImg := "fnproject/fn-test-utils"
+
+	app := &models.App{ID: "app_id", Name: "soup"}
+
+	f1 := &models.Fn{ID: "cold", Name: "cold", AppID: app.ID, Image: rImg, ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 10, IdleTimeout: 20}, Config: rCfg}
+	f2 := &models.Fn{ID: "hothttp", Name: "hothttp", AppID: app.ID, Image: rImg, Format: "http", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 10, IdleTimeout: 20}, Config: rCfg}
+	f3 := &models.Fn{ID: "hotjson", Name: "hotjson", AppID: app.ID, Image: rImg, Format: "json", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 10, IdleTimeout: 20}, Config: rCfg}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Fn{f1, f2, f3},
+		[]*models.Trigger{
+			{ID: "t1", Name: "t1", AppID: app.ID, FnID: f1.ID, Type: "http", Source: "/cold"},
+			{ID: "t2", Name: "t2", AppID: app.ID, FnID: f1.ID, Type: "http", Source: "/hothttp"},
+			{ID: "t3", Name: "t3", AppID: app.ID, FnID: f1.ID, Type: "http", Source: "/hotjson"},
+		},
+	)
+	ls := logs.NewMock()
+
+	rnr, cancelrnr := testRunner(t, ds, ls)
+	defer cancelrnr()
+
+	srv := testServer(ds, &mqs.Mock{}, ls, rnr, ServerTypeFull)
+
+	emptyBody := `{"echoContent": "_TRX_ID_", "isDebug": true, "isEmptyBody": true}`
+
+	// Test hot cases twice to rule out hot-containers corrupting next request.
+	testCases := []struct {
+		path string
+	}{
+		{"/t/soup/cold"},
+		{"/t/soup/hothttp"},
+		{"/t/soup/hothttp"},
+		{"/t/soup/hotjson"},
+		{"/t/soup/hotjson"},
+	}
+
+	for i, test := range testCases {
+		t.Run(fmt.Sprintf("%d_%s", i, strings.Replace(test.path, "/", "_", -1)), func(t *testing.T) {
+			trx := fmt.Sprintf("_trx_%d_", i)
+			body := strings.NewReader(strings.Replace(emptyBody, "_TRX_ID_", trx, 1))
+			_, rec := routerRequest(t, srv.Router, "GET", test.path, body)
+			respBytes, _ := ioutil.ReadAll(rec.Body)
+			respBody := string(respBytes)
+			maxBody := len(respBody)
+			if maxBody > 1024 {
+				maxBody = 1024
+			}
+
+			if rec.Code != http.StatusOK {
+				isFailure = true
+				t.Errorf("Test %d: Expected status code to be %d but was %d. body: %s",
+					i, http.StatusOK, rec.Code, respBody[:maxBody])
+			} else if len(respBytes) != 0 {
+				isFailure = true
+				t.Errorf("Test %d: Expected empty body but got %d. body: %s",
+					i, len(respBytes), respBody[:maxBody])
+			}
+		})
+	}
+}
+
+func TestTriggerRunnerExecution(t *testing.T) {
+	buf := setLogBuffer()
+	isFailure := false
+	tweaker := envTweaker("FN_MAX_RESPONSE_SIZE", "2048")
+	defer tweaker()
+
+	// Log once after we are done, flow of events are important (hot/cold containers, idle timeout, etc.)
+	// for figuring out why things failed.
+	defer func() {
+		if isFailure {
+			t.Log(buf.String())
+		}
+	}()
+
+	rCfg := map[string]string{"ENABLE_HEADER": "yes", "ENABLE_FOOTER": "yes"} // enable container start/end header/footer
+	rImg := "fnproject/fn-test-utils"
+	rImgBs1 := "fnproject/imagethatdoesnotexist"
+	rImgBs2 := "localhost:5050/fnproject/imagethatdoesnotexist"
+
+	app := &models.App{ID: "app_id", Name: "myapp"}
+
+	defaultDneFn := &models.Fn{ID: "default_dne_fn_id", Name: "default_dne_fn", AppID: app.ID, Image: rImgBs1, Format: "", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	defaultFn := &models.Fn{ID: "default_fn_id", Name: "default_fn", AppID: app.ID, Image: rImg, Format: "", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	httpFn := &models.Fn{ID: "http_fn_id", Name: "http_fn", AppID: app.ID, Image: rImg, Format: "http", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	httpDneFn := &models.Fn{ID: "http_dne_fn_id", Name: "http_dne_fn", AppID: app.ID, Image: rImgBs1, Format: "http", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	httpDneRegistryFn := &models.Fn{ID: "http_dnereg_fn_id", Name: "http_dnereg_fn", AppID: app.ID, Image: rImgBs2, Format: "http", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	jsonFn := &models.Fn{ID: "json_fn_id", Name: "json_fn", AppID: app.ID, Image: rImg, Format: "json", ResourceConfig: models.ResourceConfig{Memory: 64, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+	oomFn := &models.Fn{ID: "http_fn_id", Name: "http_fn", AppID: app.ID, Image: rImg, Format: "http", ResourceConfig: models.ResourceConfig{Memory: 8, Timeout: 30, IdleTimeout: 30}, Config: rCfg}
+
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Fn{defaultFn, defaultDneFn, httpDneRegistryFn, oomFn, httpFn, jsonFn, httpDneFn},
+		[]*models.Trigger{
+			{ID: "1", Name: "1", Source: "/", Type: "http", AppID: app.ID, FnID: defaultFn.ID},
+			{ID: "2", Name: "2", Source: "/myhot", Type: "http", AppID: app.ID, FnID: httpFn.ID},
+			{ID: "3", Name: "3", Source: "/myhotjason", Type: "http", AppID: app.ID, FnID: jsonFn.ID},
+			{ID: "4", Name: "4", Source: "/myroute", Type: "http", AppID: app.ID, FnID: defaultFn.ID},
+			{ID: "5", Name: "5", Source: "/myerror", Type: "http", AppID: app.ID, FnID: defaultFn.ID},
+			{ID: "6", Name: "6", Source: "/mydne", Type: "http", AppID: app.ID, FnID: defaultDneFn.ID},
+			{ID: "7", Name: "7", Source: "/mydnehot", Type: "http", AppID: app.ID, FnID: httpDneFn.ID},
+			{ID: "8", Name: "8", Source: "/mydneregistry", Type: "http", AppID: app.ID, FnID: httpDneRegistryFn.ID},
+			{ID: "9", Name: "9", Source: "/myoom", Type: "http", AppID: app.ID, FnID: oomFn.ID},
+			{ID: "10", Name: "10", Source: "/mybigoutputcold", Type: "http", AppID: app.ID, FnID: defaultFn.ID},
+			{ID: "11", Name: "11", Source: "/mybigoutputhttp", Type: "http", AppID: app.ID, FnID: httpFn.ID},
+			{ID: "12", Name: "12", Source: "/mybigoutputjson", Type: "http", AppID: app.ID, FnID: jsonFn.ID},
+		},
+	)
+	ls := logs.NewMock()
+
+	rnr, cancelrnr := testRunner(t, ds, ls)
+	defer cancelrnr()
+
+	srv := testServer(ds, &mqs.Mock{}, ls, rnr, ServerTypeFull)
+
+	expHeaders := map[string][]string{"Content-Type": {"application/json; charset=utf-8"}}
+	expCTHeaders := map[string][]string{"Content-Type": {"foo/bar"}}
+
+	// Checking for EndOfLogs currently depends on scheduling of go-routines (in docker/containerd) that process stderr & stdout.
+	// Therefore, not testing for EndOfLogs for hot containers (which has complex I/O processing) anymore.
+	multiLogExpectCold := []string{"BeginOfLogs", "EndOfLogs"}
+	multiLogExpectHot := []string{"BeginOfLogs" /*, "EndOfLogs" */}
+
+	crasher := `{"echoContent": "_TRX_ID_", "isDebug": true, "isCrash": true}`                      // crash container
+	oomer := `{"echoContent": "_TRX_ID_", "isDebug": true, "allocateMemory": 12000000}`             // ask for 12MB
+	badHot := `{"echoContent": "_TRX_ID_", "invalidResponse": true, "isDebug": true}`               // write a not json/http as output
+	ok := `{"echoContent": "_TRX_ID_", "isDebug": true}`                                            // good response / ok
+	respTypeLie := `{"echoContent": "_TRX_ID_", "responseContentType": "foo/bar", "isDebug": true}` // Content-Type: foo/bar
+	respTypeJason := `{"echoContent": "_TRX_ID_", "jasonContentType": "foo/bar", "isDebug": true}`  // Content-Type: foo/bar
+
+	// sleep between logs and with debug enabled, fn-test-utils will log header/footer below:
+	multiLog := `{"echoContent": "_TRX_ID_", "sleepTime": 1000, "isDebug": true}`
+	bigoutput := `{"echoContent": "_TRX_ID_", "isDebug": true, "trailerRepeat": 1000}` // 1000 trailers to exceed 2K
+	smalloutput := `{"echoContent": "_TRX_ID_", "isDebug": true, "trailerRepeat": 1}`  // 1 trailer < 2K
+
+	testCases := []struct {
+		path               string
+		body               string
+		method             string
+		expectedCode       int
+		expectedHeaders    map[string][]string
+		expectedErrSubStr  string
+		expectedLogsSubStr []string
+	}{
+		{"/t/myapp/", ok, "GET", http.StatusOK, expHeaders, "", nil},
+
+		{"/t/myapp/myhot", badHot, "GET", http.StatusBadGateway, expHeaders, "invalid http response", nil},
+		// hot container now back to normal:
+		{"/t/myapp/myhot", ok, "GET", http.StatusOK, expHeaders, "", nil},
+
+		{"/t/myapp/myhotjason", badHot, "GET", http.StatusBadGateway, expHeaders, "invalid json response", nil},
+		// hot container now back to normal:
+		{"/t/myapp/myhotjason", ok, "GET", http.StatusOK, expHeaders, "", nil},
+
+		{"/t/myapp/myhot", respTypeLie, "GET", http.StatusOK, expCTHeaders, "", nil},
+		{"/t/myapp/myhotjason", respTypeLie, "GET", http.StatusOK, expCTHeaders, "", nil},
+		{"/t/myapp/myhotjason", respTypeJason, "GET", http.StatusOK, expCTHeaders, "", nil},
+
+		{"/t/myapp/myroute", ok, "GET", http.StatusOK, expHeaders, "", nil},
+		{"/t/myapp/myerror", crasher, "GET", http.StatusBadGateway, expHeaders, "container exit code 2", nil},
+		{"/t/myapp/mydne", ``, "GET", http.StatusNotFound, nil, "pull access denied", nil},
+		{"/t/myapp/mydnehot", ``, "GET", http.StatusNotFound, nil, "pull access denied", nil},
+		{"/t/myapp/mydneregistry", ``, "GET", http.StatusInternalServerError, nil, "connection refused", nil},
+		{"/t/myapp/myoom", oomer, "GET", http.StatusBadGateway, nil, "container out of memory", nil},
+		{"/t/myapp/myhot", multiLog, "GET", http.StatusOK, nil, "", multiLogExpectHot},
+		{"/t/myapp/", multiLog, "GET", http.StatusOK, nil, "", multiLogExpectCold},
+		{"/t/myapp/mybigoutputjson", bigoutput, "GET", http.StatusBadGateway, nil, "function response too large", nil},
+		{"/t/myapp/mybigoutputjson", smalloutput, "GET", http.StatusOK, nil, "", nil},
+		{"/t/myapp/mybigoutputhttp", bigoutput, "GET", http.StatusBadGateway, nil, "", nil},
+		{"/t/myapp/mybigoutputhttp", smalloutput, "GET", http.StatusOK, nil, "", nil},
+		{"/t/myapp/mybigoutputcold", bigoutput, "GET", http.StatusBadGateway, nil, "", nil},
+		{"/t/myapp/mybigoutputcold", smalloutput, "GET", http.StatusOK, nil, "", nil},
+	}
+
+	callIds := make([]string, len(testCases))
+
+	for i, test := range testCases {
+		t.Run(fmt.Sprintf("Test_%d_%s", i, strings.Replace(test.path, "/", "_", -1)), func(t *testing.T) {
+			trx := fmt.Sprintf("_trx_%d_", i)
+			body := strings.NewReader(strings.Replace(test.body, "_TRX_ID_", trx, 1))
+			_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
+			respBytes, _ := ioutil.ReadAll(rec.Body)
+			respBody := string(respBytes)
+			maxBody := len(respBody)
+			if maxBody > 1024 {
+				maxBody = 1024
+			}
+
+			callIds[i] = rec.Header().Get("Fn_call_id")
+
+			if rec.Code != test.expectedCode {
+				isFailure = true
+				t.Errorf("Test %d: Expected status code to be %d but was %d. body: %s",
+					i, test.expectedCode, rec.Code, respBody[:maxBody])
+			}
+
+			if rec.Code == http.StatusOK && !strings.Contains(respBody, trx) {
+				isFailure = true
+				t.Errorf("Test %d: Expected response to include %s but got body: %s",
+					i, trx, respBody[:maxBody])
+
+			}
+
+			if test.expectedErrSubStr != "" && !strings.Contains(respBody, test.expectedErrSubStr) {
+				isFailure = true
+				t.Errorf("Test %d: Expected response to include %s but got body: %s",
+					i, test.expectedErrSubStr, respBody[:maxBody])
+
+			}
+
+			if test.expectedHeaders != nil {
+				for name, header := range test.expectedHeaders {
+					if header[0] != rec.Header().Get(name) {
+						isFailure = true
+						t.Errorf("Test %d: Expected header `%s` to be %s but was %s. body: %s",
+							i, name, header[0], rec.Header().Get(name), respBody)
+					}
+				}
+			}
+		})
+
+	}
+
+	for i, test := range testCases {
+		if test.expectedLogsSubStr != nil {
+			if !checkLogs(t, i, ls, callIds[i], test.expectedLogsSubStr) {
+				isFailure = true
+			}
+		}
+	}
+}
+
+func TestTriggerRunnerTimeout(t *testing.T) {
+	buf := setLogBuffer()
+	isFailure := false
+
+	// Log once after we are done, flow of events are important (hot/cold containers, idle timeout, etc.)
+	// for figuring out why things failed.
+	defer func() {
+		if isFailure {
+			t.Log(buf.String())
+		}
+	}()
+
+	models.RouteMaxMemory = uint64(1024 * 1024 * 1024) // 1024 TB
+	hugeMem := uint64(models.RouteMaxMemory - 1)
+
+	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
+	coldFn := &models.Fn{ID: "cold", Name: "cold", AppID: app.ID, Format: "", Image: "fnproject/fn-test-utils", ResourceConfig: models.ResourceConfig{Memory: 128, Timeout: 4, IdleTimeout: 30}}
+	httpFn := &models.Fn{ID: "cold", Name: "http", AppID: app.ID, Format: "http", Image: "fnproject/fn-test-utils", ResourceConfig: models.ResourceConfig{Memory: 128, Timeout: 4, IdleTimeout: 30}}
+	jsonFn := &models.Fn{ID: "json", Name: "json", AppID: app.ID, Format: "json", Image: "fnproject/fn-test-utils", ResourceConfig: models.ResourceConfig{Memory: 128, Timeout: 4, IdleTimeout: 30}}
+	bigMemColdFn := &models.Fn{ID: "bigmemcold", Name: "bigmemcold", AppID: app.ID, Format: "", Image: "fnproject/fn-test-utils", ResourceConfig: models.ResourceConfig{Memory: hugeMem, Timeout: 4, IdleTimeout: 30}}
+	bigMemHotFn := &models.Fn{ID: "bigmemhot", Name: "bigmemhot", AppID: app.ID, Format: "http", Image: "fnproject/fn-test-utils", ResourceConfig: models.ResourceConfig{Memory: hugeMem, Timeout: 4, IdleTimeout: 30}}
+
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Fn{coldFn, httpFn, jsonFn, bigMemColdFn, bigMemHotFn},
+		[]*models.Trigger{
+			{ID: "1", Name: "1", Source: "/cold", Type: "http", AppID: app.ID, FnID: coldFn.ID},
+			{ID: "2", Name: "2", Source: "/hot", Type: "http", AppID: app.ID, FnID: httpFn.ID},
+			{ID: "3", Name: "3", Source: "/hot-json", Type: "http", AppID: app.ID, FnID: jsonFn.ID},
+			{ID: "4", Name: "4", Source: "/bigmem-cold", Type: "http", AppID: app.ID, FnID: bigMemColdFn.ID},
+			{ID: "5", Name: "5", Source: "/bigmem-hot", Type: "http", AppID: app.ID, FnID: bigMemHotFn.ID},
+		},
+	)
+
+	fnl := logs.NewMock()
+	rnr, cancelrnr := testRunner(t, ds, fnl)
+	defer cancelrnr()
+
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, ServerTypeFull)
+
+	for i, test := range []struct {
+		path            string
+		body            string
+		method          string
+		expectedCode    int
+		expectedHeaders map[string][]string
+	}{
+		{"/t/myapp/cold", `{"echoContent": "_TRX_ID_", "sleepTime": 0, "isDebug": true}`, "POST", http.StatusOK, nil},
+		{"/t/myapp/cold", `{"echoContent": "_TRX_ID_", "sleepTime": 5000, "isDebug": true}`, "POST", http.StatusGatewayTimeout, nil},
+		{"/t/myapp/hot", `{"echoContent": "_TRX_ID_", "sleepTime": 5000, "isDebug": true}`, "POST", http.StatusGatewayTimeout, nil},
+		{"/t/myapp/hot", `{"echoContent": "_TRX_ID_", "sleepTime": 0, "isDebug": true}`, "POST", http.StatusOK, nil},
+		{"/t/myapp/hot-json", `{"echoContent": "_TRX_ID_", "sleepTime": 5000, "isDebug": true}`, "POST", http.StatusGatewayTimeout, nil},
+		{"/t/myapp/hot-json", `{"echoContent": "_TRX_ID_", "sleepTime": 0, "isDebug": true}`, "POST", http.StatusOK, nil},
+		{"/t/myapp/bigmem-cold", `{"echoContent": "_TRX_ID_", "sleepTime": 0, "isDebug": true}`, "POST", http.StatusServiceUnavailable, map[string][]string{"Retry-After": {"15"}}},
+		{"/t/myapp/bigmem-hot", `{"echoContent": "_TRX_ID_", "sleepTime": 0, "isDebug": true}`, "POST", http.StatusServiceUnavailable, map[string][]string{"Retry-After": {"15"}}},
+	} {
+		t.Run(fmt.Sprintf("%d_%s", i, strings.Replace(test.path, "/", "_", -1)), func(t *testing.T) {
+			trx := fmt.Sprintf("_trx_%d_", i)
+			body := strings.NewReader(strings.Replace(test.body, "_TRX_ID_", trx, 1))
+			_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
+			respBytes, _ := ioutil.ReadAll(rec.Body)
+			respBody := string(respBytes)
+			maxBody := len(respBody)
+			if maxBody > 1024 {
+				maxBody = 1024
+			}
+
+			if rec.Code != test.expectedCode {
+				isFailure = true
+				t.Errorf("Test %d: Expected status code to be %d but was %d body: %#v",
+					i, test.expectedCode, rec.Code, respBody[:maxBody])
+			}
+
+			if rec.Code == http.StatusOK && !strings.Contains(respBody, trx) {
+				isFailure = true
+				t.Errorf("Test %d: Expected response to include %s but got body: %s",
+					i, trx, respBody[:maxBody])
+
+			}
+
+			if test.expectedHeaders != nil {
+				for name, header := range test.expectedHeaders {
+					if header[0] != rec.Header().Get(name) {
+						isFailure = true
+						t.Errorf("Test %d: Expected header `%s` to be %s but was %s body: %#v",
+							i, name, header[0], rec.Header().Get(name), respBody[:maxBody])
+					}
+				}
+			}
+		})
+
+	}
+}
+
+// Minimal test that checks the possibility of invoking concurrent hot sync functions.
+func TestTriggerRunnerMinimalConcurrentHotSync(t *testing.T) {
+	buf := setLogBuffer()
+
+	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
+	fn := &models.Fn{ID: "fn_id", AppID: app.ID, Name: "myfn", Image: "fnproject/fn-test-utils", Format: "http", ResourceConfig: models.ResourceConfig{Memory: 128, Timeout: 30, IdleTimeout: 5}}
+	ds := datastore.NewMockInit(
+		[]*models.App{app},
+		[]*models.Fn{fn},
+		[]*models.Trigger{{Name: "1", Source: "/hot", AppID: app.ID, FnID: fn.ID, Type: "http"}},
+	)
+
+	fnl := logs.NewMock()
+	rnr, cancelrnr := testRunner(t, ds, fnl)
+	defer cancelrnr()
+
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, ServerTypeFull)
+
+	for i, test := range []struct {
+		path            string
+		body            string
+		method          string
+		expectedCode    int
+		expectedHeaders map[string][]string
+	}{
+		{"/t/myapp/hot", `{"sleepTime": 100, "isDebug": true}`, "POST", http.StatusOK, nil},
+	} {
+		errs := make(chan error)
+		numCalls := 4
+		for k := 0; k < numCalls; k++ {
+			go func() {
+				body := strings.NewReader(test.body)
+				_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
+
+				if rec.Code != test.expectedCode {
+					t.Log(buf.String())
+					errs <- fmt.Errorf("Test %d: Expected status code to be %d but was %d body: %#v",
+						i, test.expectedCode, rec.Code, rec.Body.String())
+					return
+				}
+
+				if test.expectedHeaders == nil {
+					errs <- nil
+					return
+				}
+				for name, header := range test.expectedHeaders {
+					if header[0] != rec.Header().Get(name) {
+						t.Log(buf.String())
+						errs <- fmt.Errorf("Test %d: Expected header `%s` to be %s but was %s body: %#v",
+							i, name, header[0], rec.Header().Get(name), rec.Body.String())
+						return
+					}
+				}
+				errs <- nil
+			}()
+		}
+		for k := 0; k < numCalls; k++ {
+			err := <-errs
+			if err != nil {
+				t.Errorf("%v", err)
+			}
+		}
+	}
+}

api/server/runner_test.go

@@ -2,60 +2,19 @@ package server
 
 import (
 	"bytes"
-	"context"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"net/http"
-	"os"
 	"strings"
 	"testing"
 
-	"github.com/fnproject/fn/api/agent"
 	"github.com/fnproject/fn/api/datastore"
 	"github.com/fnproject/fn/api/logs"
 	"github.com/fnproject/fn/api/models"
 	"github.com/fnproject/fn/api/mqs"
 )
 
-func envTweaker(name, value string) func() {
+// TODO Deprecate with Routes
-	bck, ok := os.LookupEnv(name)
-
-	err := os.Setenv(name, value)
-	if err != nil {
-		panic(err.Error())
-	}
-
-	return func() {
-		var err error
-		if !ok {
-			err = os.Unsetenv(name)
-		} else {
-			err = os.Setenv(name, bck)
-		}
-		if err != nil {
-			panic(err.Error())
-		}
-	}
-}
-
-func testRunner(_ *testing.T, args ...interface{}) (agent.Agent, context.CancelFunc) {
-	ds := datastore.NewMock()
-	ls := logs.NewMock()
-	var mq models.MessageQueue = &mqs.Mock{}
-	for _, a := range args {
-		switch arg := a.(type) {
-		case models.Datastore:
-			ds = arg
-		case models.MessageQueue:
-			mq = arg
-		case models.LogStore:
-			ls = arg
-		}
-	}
-	r := agent.New(agent.NewDirectDataAccess(ds, ls, mq))
-	return r, func() { r.Close() }
-}
 
 func TestRouteRunnerGet(t *testing.T) {
 	buf := setLogBuffer()
@@ -219,6 +178,7 @@ func TestRouteRunnerExecEmptyBody(t *testing.T) {
 		}
 	}
 }
+
 func TestRouteRunnerExecution(t *testing.T) {
 	buf := setLogBuffer()
 	isFailure := false
@@ -380,85 +340,6 @@ func TestRouteRunnerExecution(t *testing.T) {
 	}
 }
 
-func checkLogs(t *testing.T, tnum int, ds models.LogStore, callID string, expected []string) bool {
-
-	logReader, err := ds.GetLog(context.Background(), "myapp", callID)
-	if err != nil {
-		t.Errorf("Test %d: GetLog for call_id:%s returned err %s",
-			tnum, callID, err.Error())
-		return false
-	}
-
-	logBytes, err := ioutil.ReadAll(logReader)
-	if err != nil {
-		t.Errorf("Test %d: GetLog read IO call_id:%s returned err %s",
-			tnum, callID, err.Error())
-		return false
-	}
-
-	logBody := string(logBytes)
-	maxLog := len(logBody)
-	if maxLog > 1024 {
-		maxLog = 1024
-	}
-
-	for _, match := range expected {
-		if !strings.Contains(logBody, match) {
-			t.Errorf("Test %d: GetLog read IO call_id:%s cannot find: %s in logs: %s",
-				tnum, callID, match, logBody[:maxLog])
-			return false
-		}
-	}
-
-	return true
-}
-
-// implement models.MQ and models.APIError
-type errorMQ struct {
-	error
-	code int
-}
-
-func (mock *errorMQ) Push(context.Context, *models.Call) (*models.Call, error) { return nil, mock }
-func (mock *errorMQ) Reserve(context.Context) (*models.Call, error)            { return nil, mock }
-func (mock *errorMQ) Delete(context.Context, *models.Call) error               { return mock }
-func (mock *errorMQ) Code() int                                                { return mock.code }
-func (mock *errorMQ) Close() error                                             { return nil }
-func TestFailedEnqueue(t *testing.T) {
-	buf := setLogBuffer()
-	app := &models.App{ID: "app_id", Name: "myapp", Config: models.Config{}}
-	ds := datastore.NewMockInit(
-		[]*models.App{app},
-		[]*models.Route{
-			{Path: "/dummy", Image: "dummy/dummy", Type: "async", Memory: 128, Timeout: 30, IdleTimeout: 30, AppID: app.ID},
-		},
-	)
-	err := errors.New("Unable to push task to queue")
-	mq := &errorMQ{err, http.StatusInternalServerError}
-	fnl := logs.NewMock()
-	rnr, cancelrnr := testRunner(t, ds, mq, fnl)
-	defer cancelrnr()
-
-	srv := testServer(ds, mq, fnl, rnr, ServerTypeFull)
-	for i, test := range []struct {
-		path            string
-		body            string
-		method          string
-		expectedCode    int
-		expectedHeaders map[string][]string
-	}{
-		{"/r/myapp/dummy", ``, "POST", http.StatusInternalServerError, nil},
-	} {
-		body := strings.NewReader(test.body)
-		_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
-		if rec.Code != test.expectedCode {
-			t.Log(buf.String())
-			t.Errorf("Test %d: Expected status code to be %d but was %d",
-				i, test.expectedCode, rec.Code)
-		}
-	}
-}
-
 func TestRouteRunnerTimeout(t *testing.T) {
 	buf := setLogBuffer()
 	isFailure := false

api/server/server.go

@@ -157,7 +157,7 @@ const (
 
 func (s NodeType) String() string {
 	switch s {
-	default:
+	case ServerTypeFull:
 		return "full"
 	case ServerTypeAPI:
 		return "api"
@@ -167,6 +167,8 @@ func (s NodeType) String() string {
 		return "runner"
 	case ServerTypePureRunner:
 		return "pure-runner"
+	default:
+		return fmt.Sprintf("unknown(%d)", s)
 	}
 }
 
@@ -184,6 +186,10 @@ type Server struct {
 	mq              models.MessageQueue
 	logstore        models.LogStore
 	nodeType        NodeType
+	// Agent enqueue  and read stores
+	lbEnqueue              agent.EnqueueDataAccess
+	lbReadAccess           agent.ReadDataAccess
+	noHTTTPTriggerEndpoint bool
 	cert                   string
 	certKey                string
 	certAuthority          string
@@ -244,10 +250,10 @@ func NewFromEnv(ctx context.Context, opts ...Option) *Server {
 	opts = append(opts, WithNodeCertKey(getEnv(EnvCertKey, "")))
 	opts = append(opts, WithNodeCertAuthority(getEnv(EnvCertAuth, "")))
 
-	publicLbUrl := getEnv(EnvPublicLoadBalancerURL, "")
+	publicLBURL := getEnv(EnvPublicLoadBalancerURL, "")
-	if publicLbUrl != "" {
+	if publicLBURL != "" {
-		logrus.Infof("using LB Base URL: '%s'", publicLbUrl)
+		logrus.Infof("using LB Base URL: '%s'", publicLBURL)
-		opts = append(opts, WithTriggerAnnotator(NewStaticURLTriggerAnnotator(publicLbUrl)))
+		opts = append(opts, WithTriggerAnnotator(NewStaticURLTriggerAnnotator(publicLBURL)))
 	} else {
 		opts = append(opts, WithTriggerAnnotator(NewRequestBasedTriggerAnnotator()))
 	}
@@ -317,6 +323,7 @@ func WithDBURL(dbURL string) Option {
 				return err
 			}
 			s.datastore = ds
+			s.lbReadAccess = agent.NewCachedDataAccess(s.datastore)
 		}
 		return nil
 	}
@@ -331,6 +338,7 @@ func WithMQURL(mqURL string) Option {
 				return err
 			}
 			s.mq = mq
+			s.lbEnqueue = agent.NewDirectEnqueueAccess(mq)
 		}
 		return nil
 	}
@@ -353,12 +361,13 @@ func WithLogURL(logstoreURL string) Option {
 // WithRunnerURL maps EnvRunnerURL
 func WithRunnerURL(runnerURL string) Option {
 	return func(ctx context.Context, s *Server) error {
+
 		if runnerURL != "" {
 			cl, err := hybrid.NewClient(runnerURL)
 			if err != nil {
 				return err
 			}
-			s.agent = agent.New(agent.NewCachedDataAccess(cl))
+			s.lbReadAccess = agent.NewCachedDataAccess(cl)
 		}
 		return nil
 	}
@@ -426,10 +435,21 @@ func WithNodeCertAuthority(ca string) Option {
 	}
 }
 
+// WithReadDataAccess overrides the LB read DataAccess for a server
+func WithReadDataAccess(ds agent.ReadDataAccess) Option {
+	return func(ctx context.Context, s *Server) error {
+		s.lbReadAccess = ds
+		return nil
+	}
+}
+
 // WithDatastore allows directly setting a datastore
 func WithDatastore(ds models.Datastore) Option {
 	return func(ctx context.Context, s *Server) error {
 		s.datastore = ds
+		if s.lbReadAccess == nil {
+			s.lbReadAccess = agent.NewCachedDataAccess(ds)
+		}
 		return nil
 	}
 }
@@ -438,6 +458,7 @@ func WithDatastore(ds models.Datastore) Option {
 func WithMQ(mq models.MessageQueue) Option {
 	return func(ctx context.Context, s *Server) error {
 		s.mq = mq
+		s.lbEnqueue = agent.NewDirectEnqueueAccess(mq)
 		return nil
 	}
 }
@@ -497,7 +518,9 @@ func WithFullAgent() Option {
 		if s.datastore == nil || s.logstore == nil || s.mq == nil {
 			return errors.New("full nodes must configure FN_DB_URL, FN_LOG_URL, FN_MQ_URL")
 		}
-		s.agent = agent.New(agent.NewCachedDataAccess(agent.NewDirectDataAccess(s.datastore, s.logstore, s.mq)))
+		da := agent.NewDirectCallDataAccess(s.logstore, s.mq)
+		dq := agent.NewDirectDequeueAccess(s.mq)
+		s.agent = agent.New(da, agent.WithAsync(dq))
 		return nil
 	}
 }
@@ -518,7 +541,8 @@ func WithAgentFromEnv() Option {
 			if err != nil {
 				return err
 			}
-			s.agent = agent.New(agent.NewCachedDataAccess(cl))
+
+			s.agent = agent.New(cl)
 		case ServerTypePureRunner:
 			if s.datastore != nil {
 				return errors.New("pure runner nodes must not be configured with a datastore (FN_DB_URL)")
@@ -574,7 +598,8 @@ func WithAgentFromEnv() Option {
 			pool.RegisterPlacerViews(keys)
 			agent.RegisterLBAgentViews(keys)
 
-			s.agent, err = agent.NewLBAgent(agent.NewCachedDataAccess(cl), runnerPool, placer)
+			s.lbReadAccess = agent.NewCachedDataAccess(cl)
+			s.agent, err = agent.NewLBAgent(cl, runnerPool, placer)
 			if err != nil {
 				return errors.New("LBAgent creation failed")
 			}
@@ -625,6 +650,7 @@ func New(ctx context.Context, opts ...Option) *Server {
 		webListenPort:   DefaultPort,
 		adminListenPort: DefaultPort,
 		grpcListenPort:  DefaultGRPCPort,
+		lbEnqueue:       agent.NewUnsupportedAsyncEnqueueAccess(),
 		// Almost everything else is configured through opts (see NewFromEnv for ex.) or below
 	}
 
@@ -638,19 +664,47 @@ func New(ctx context.Context, opts ...Option) *Server {
 		}
 	}
 
+	requireConfigSet := func(id string, val interface{}) {
+		if val == nil {
+			log.Fatalf("Invalid configuration for server type %s, %s must be configured during startup", s.nodeType, id)
+		}
+	}
+	requireConfigNotSet := func(id string, val interface{}) {
+		if val != nil {
+			log.Fatalf("Invalid configuration for server type %s, %s must not be configured during startup", s.nodeType, id)
+		}
+	}
+
 	// Check that WithAgent options have been processed correctly.
+	// Yuck the yuck  - server should really be split into several interfaces (LB, Runner, API) and each should be instantiated separately
 	switch s.nodeType {
 	case ServerTypeAPI:
-		if s.agent != nil {
+		requireConfigNotSet("agent", s.agent)
-			log.Fatal("Incorrect configuration, API nodes must not have an agent initialized.")
+		requireConfigSet("datastore", s.datastore)
-		}
+		requireConfigSet("triggerAnnotator", s.triggerAnnotator)
-		if s.triggerAnnotator == nil {
+	case ServerTypeFull:
-			log.Fatal("No trigger annotatator  set ")
+		requireConfigSet("enqueue", s.lbEnqueue)
-		}
+		requireConfigSet("agent", s.agent)
+		requireConfigSet("lbReadAccess", s.lbReadAccess)
+		requireConfigSet("datastore", s.datastore)
+		requireConfigSet("triggerAnnotator", s.triggerAnnotator)
+
+	case ServerTypeLB:
+		requireConfigSet("lbReadAccess", s.lbReadAccess)
+		requireConfigSet("agent", s.agent)
+		requireConfigSet("lbEnqueue", s.lbEnqueue)
+
+	case ServerTypeRunner:
+		requireConfigSet("lbReadAccess", s.lbReadAccess)
+		requireConfigSet("agent", s.agent)
+
+	case ServerTypePureRunner:
+		requireConfigSet("agent", s.agent)
+
 	default:
-		if s.agent == nil {
+
-			log.Fatal("Incorrect configuration, non-API nodes must have an agent initialized.")
+		log.Fatal("unknown server type %d", s.nodeType)
-		}
+
 	}
 
 	setMachineID()
@@ -664,6 +718,7 @@ func New(ctx context.Context, opts ...Option) *Server {
 	s.fnListeners = new(fnListeners)
 	s.triggerListeners = new(triggerListeners)
 
+	// TODO it's not clear that this is always correct as the read store  won't  get wrapping
 	s.datastore = datastore.Wrap(s.datastore)
 	s.datastore = fnext.NewDatastore(s.datastore, s.appListeners, s.routeListeners, s.fnListeners, s.triggerListeners)
 	s.logstore = logs.Wrap(s.logstore)
@@ -702,6 +757,14 @@ func WithPrometheus() Option {
 	}
 }
 
+// WithoutHTTPTriggerEndpoints optionally disables the trigger and route endpoints from a LB -supporting server, allowing extensions to replace them with their own versions
+func WithoutHTTPTriggerEndpoints() Option {
+	return func(ctx context.Context, s *Server) error {
+		s.noHTTTPTriggerEndpoint = true
+		return nil
+	}
+}
+
 // WithJaeger maps EnvJaegerURL
 func WithJaeger(jaegerURL string) Option {
 	return func(ctx context.Context, s *Server) error {
@@ -999,8 +1062,9 @@ func (s *Server) bindHandlers(ctx context.Context) {
 	profilerSetup(admin, "/debug")
 
 	// Pure runners don't have any route, they have grpc
-	if s.nodeType != ServerTypePureRunner {
+	switch s.nodeType {
-		if s.nodeType != ServerTypeRunner {
+
+	case ServerTypeFull, ServerTypeAPI:
 		clean := engine.Group("/v1")
 		v1 := clean.Group("")
 		v1.Use(setAppNameInCtx)
@@ -1016,7 +1080,7 @@ func (s *Server) bindHandlers(ctx context.Context) {
 				withAppCheck := apps.Group("")
 				withAppCheck.Use(s.checkAppPresenceByName())
 
-					withAppCheck.GET("", s.handleV1AppGetByName)
+				withAppCheck.GET("", s.handleV1AppGetByIdOrName)
 				withAppCheck.PATCH("", s.handleV1AppUpdate)
 				withAppCheck.DELETE("", s.handleV1AppDelete)
 
@@ -1057,29 +1121,38 @@ func (s *Server) bindHandlers(ctx context.Context) {
 			v2.DELETE("/triggers/:triggerID", s.handleTriggerDelete)
 		}
 
-			{
+		{ // Hybrid API - this should only be enabled on API servers
-				runner := clean.Group("/runner")
+			runner := cleanv2.Group("/runner")
 			runner.PUT("/async", s.handleRunnerEnqueue)
 			runner.GET("/async", s.handleRunnerDequeue)
 
 			runner.POST("/start", s.handleRunnerStart)
 			runner.POST("/finish", s.handleRunnerFinish)
 
-				runnerAppApi := runner.Group(
+			runnerAppAPI := runner.Group(
-
 				"/apps/:appID")
-				runnerAppApi.Use(setAppIDInCtx)
+			runnerAppAPI.Use(setAppIDInCtx)
-				runnerAppApi.GET("", s.handleV1AppGetByName)
+			// Both of these are somewhat odd -
-				runnerAppApi.GET("/routes/:route", s.handleRouteGetRunner)
+			// Deprecate, remove with routes
+			runnerAppAPI.GET("/routes/*route", s.handleRunnerGetRoute)
+			runnerAppAPI.GET("/triggerBySource/:triggerType/*triggerSource", s.handleRunnerGetTriggerBySource)
 
 		}
 	}
 
-		if s.nodeType != ServerTypeAPI {
+	switch s.nodeType {
-			runner := engine.Group("/r")
+	case ServerTypeFull, ServerTypeLB, ServerTypeRunner:
-			runner.Use(s.checkAppPresenceByNameAtRunner())
+		if !s.noHTTTPTriggerEndpoint {
-			runner.Any("/:appName", s.handleFunctionCall)
+			lbTriggerGroup := engine.Group("/t")
-			runner.Any("/:appName/*route", s.handleFunctionCall)
+			lbTriggerGroup.Any("/:appName", s.handleHTTPTriggerCall)
+			lbTriggerGroup.Any("/:appName/*triggerSource", s.handleHTTPTriggerCall)
+
+			// TODO Deprecate with routes
+			lbRouteGroup := engine.Group("/r")
+			lbRouteGroup.Use(s.checkAppPresenceByNameAtLB())
+			lbRouteGroup.Any("/:appName", s.handleV1FunctionCall)
+			lbRouteGroup.Any("/:appName/*route", s.handleV1FunctionCall)
+
 		}
 
 	}

api/server/server_test.go

@@ -10,14 +10,12 @@ import (
 	"net/url"
 	"os"
 	"strconv"
-	"strings"
 	"testing"
 
 	"github.com/fnproject/fn/api/agent"
 	"github.com/fnproject/fn/api/datastore"
 	"github.com/fnproject/fn/api/datastore/sql"
 	_ "github.com/fnproject/fn/api/datastore/sql/sqlite"
-	"github.com/fnproject/fn/api/id"
 	"github.com/fnproject/fn/api/logs"
 	"github.com/fnproject/fn/api/models"
 	"github.com/fnproject/fn/api/mqs"
@@ -220,6 +218,7 @@ func TestRunnerNode(t *testing.T) {
 		{"get all routes not found", "GET", "/v1/apps/myapp/routes", ``, http.StatusBadRequest, 0},
 		{"delete app not found", "DELETE", "/v1/apps/myapp", ``, http.StatusBadRequest, 0},
 	} {
+		t.Run(test.name, func(t *testing.T) {
 			_, rec := routerRequest(t, srv.Router, test.method, test.path, bytes.NewBuffer([]byte(test.body)))
 
 			if rec.Code != test.expectedCode {
@@ -227,6 +226,8 @@ func TestRunnerNode(t *testing.T) {
 				t.Errorf("Test \"%s\": Expected status code to be %d but was %d",
 					test.name, test.expectedCode, rec.Code)
 			}
+		})
+
 	}
 }
 
@@ -278,58 +279,3 @@ func TestApiNode(t *testing.T) {
 		}
 	}
 }
-
-func TestHybridEndpoints(t *testing.T) {
-	buf := setLogBuffer()
-	app := &models.App{ID: "app_id", Name: "myapp"}
-	ds := datastore.NewMockInit(
-		[]*models.App{app},
-		[]*models.Route{{
-			AppID: app.ID,
-			Path:  "yodawg",
-		}},
-	)
-
-	logDB := logs.NewMock()
-
-	srv := testServer(ds, &mqs.Mock{}, logDB, nil /* TODO */, ServerTypeAPI)
-
-	newCallBody := func() string {
-		call := &models.Call{
-			AppID: app.ID,
-			ID:    id.New().String(),
-			Path:  "yodawg",
-			// TODO ?
-		}
-		var b bytes.Buffer
-		json.NewEncoder(&b).Encode(&call)
-		return b.String()
-	}
-
-	for _, test := range []struct {
-		name         string
-		method       string
-		path         string
-		body         string
-		expectedCode int
-	}{
-		// TODO change all these tests to just do an async task in normal order once plumbing is done
-
-		{"post async call", "PUT", "/v1/runner/async", newCallBody(), http.StatusOK},
-
-		// TODO this one only works if it's not the same as the first since update isn't hooked up
-		{"finish call", "POST", "/v1/runner/finish", newCallBody(), http.StatusOK},
-
-		// TODO these won't work until update works and the agent gets shut off
-		//{"get async call", "GET", "/v1/runner/async", "", http.StatusOK},
-		//{"start call", "POST", "/v1/runner/start", "TODO", http.StatusOK},
-	} {
-		_, rec := routerRequest(t, srv.Router, test.method, test.path, strings.NewReader(test.body))
-
-		if rec.Code != test.expectedCode {
-			t.Log(buf.String())
-			t.Errorf("Test \"%s\": Expected status code to be %d but was %d",
-				test.name, test.expectedCode, rec.Code)
-		}
-	}
-}

api/server/trigger_annotator.go

@@ -15,7 +15,7 @@ type TriggerAnnotator interface {
 
 type requestBasedTriggerAnnotator struct{}
 
-func annotateTriggerWithBaseUrl(baseURL string, app *models.App, t *models.Trigger) (*models.Trigger, error) {
+func annotateTriggerWithBaseURL(baseURL string, app *models.App, t *models.Trigger) (*models.Trigger, error) {
 	if t.Type != models.TriggerTypeHTTP {
 		return t, nil
 	}
@@ -41,23 +41,25 @@ func (tp *requestBasedTriggerAnnotator) AnnotateTrigger(ctx *gin.Context, app *m
 		scheme = "https"
 	}
 
-	return annotateTriggerWithBaseUrl(fmt.Sprintf("%s://%s", scheme, ctx.Request.Host), app, t)
+	return annotateTriggerWithBaseURL(fmt.Sprintf("%s://%s", scheme, ctx.Request.Host), app, t)
 }
 
+//NewRequestBasedTriggerAnnotator creates a TriggerAnnotator that inspects the incoming request host and port, and uses this to generate http trigger endpoint URLs based on those
 func NewRequestBasedTriggerAnnotator() TriggerAnnotator {
 	return &requestBasedTriggerAnnotator{}
 }
 
-type staticUrlTriggerAnnotator struct {
+type staticURLTriggerAnnotator struct {
-	urlBase string
+	baseURL string
 }
 
-func NewStaticURLTriggerAnnotator(baseUrl string) TriggerAnnotator {
+//NewStaticURLTriggerAnnotator annotates triggers bases on a given, specified URL base - e.g. "https://my.domain" --->  "https://my.domain/t/app/source"
+func NewStaticURLTriggerAnnotator(baseURL string) TriggerAnnotator {
 
-	return &staticUrlTriggerAnnotator{urlBase: baseUrl}
+	return &staticURLTriggerAnnotator{baseURL: baseURL}
 }
 
-func (s *staticUrlTriggerAnnotator) AnnotateTrigger(ctx *gin.Context, app *models.App, trigger *models.Trigger) (*models.Trigger, error) {
+func (s *staticURLTriggerAnnotator) AnnotateTrigger(ctx *gin.Context, app *models.App, trigger *models.Trigger) (*models.Trigger, error) {
-	return annotateTriggerWithBaseUrl(s.urlBase, app, trigger)
+	return annotateTriggerWithBaseURL(s.baseURL, app, trigger)
 
 }

api/server/trigger_get.go

@@ -1,11 +1,10 @@
 package server
 
 import (
-	"net/http"
-
 	"fmt"
 	"github.com/fnproject/fn/api"
 	"github.com/gin-gonic/gin"
+	"net/http"
 )
 
 func (s *Server) handleTriggerGet(c *gin.Context) {

test/fn-system-tests/exec_http_trigger_test.go

@@ -0,0 +1,498 @@
+package tests
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"net/url"
+	"path"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/fnproject/fn/api/datastore/datastoretest"
+	"github.com/fnproject/fn/api/models"
+)
+
+// See fn-test-utils for json response
+func getEchoContent(respBytes []byte) (string, error) {
+
+	var respJs map[string]interface{}
+
+	err := json.Unmarshal(respBytes, &respJs)
+	if err != nil {
+		return "", err
+	}
+
+	req, ok := respJs["request"].(map[string]interface{})
+	if !ok {
+		return "", errors.New("unexpected json: request map")
+	}
+
+	echo, ok := req["echoContent"].(string)
+	if !ok {
+		return "", errors.New("unexpected json: echoContent string")
+	}
+
+	return echo, nil
+}
+
+// See fn-test-utils for json response
+func getConfigContent(key string, respBytes []byte) (string, error) {
+
+	var respJs map[string]interface{}
+
+	err := json.Unmarshal(respBytes, &respJs)
+	if err != nil {
+		return "", err
+	}
+
+	cfg, ok := respJs["config"].(map[string]interface{})
+	if !ok {
+		return "", errors.New("unexpected json: config map")
+	}
+
+	val, ok := cfg[key].(string)
+	if !ok {
+		return "", fmt.Errorf("unexpected json: %s string", key)
+	}
+
+	return val, nil
+}
+
+type systemTestResourceProvider struct {
+	datastoretest.ResourceProvider
+}
+
+func (rp *systemTestResourceProvider) ValidFn(appID string) *models.Fn {
+	fn := rp.ResourceProvider.ValidFn(appID)
+	fn.Memory = memory
+	fn.Image = image
+	fn.Format = format
+	return fn
+}
+
+var rp = &systemTestResourceProvider{
+	ResourceProvider: datastoretest.NewBasicResourceProvider(),
+}
+
+func TestCanExecuteFunctionViaTrigger(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+
+	app := ensureApp(t, rp.ValidApp())
+	fn := ensureFn(t, rp.ValidFn(app.ID))
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	body := `{"echoContent": "HelloWorld", "sleepTime": 0, "isDebug": true}`
+	content := bytes.NewBuffer([]byte(body))
+	output := &bytes.Buffer{}
+
+	resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+
+	echo, err := getEchoContent(output.Bytes())
+	if err != nil || echo != "HelloWorld" {
+		t.Fatalf("getEchoContent/HelloWorld check failed on %v", output)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode check failed on %v", resp.StatusCode)
+	}
+
+	// Now let's check FN_CHEESE, since LB and runners have override/extension mechanism
+	// to insert FN_CHEESE into config
+	cheese, err := getConfigContent("FN_CHEESE", output.Bytes())
+	if err != nil || cheese != "Tete de Moine" {
+		t.Fatalf("getConfigContent/FN_CHEESE check failed (%v) on %v", err, output)
+	}
+
+	// Now let's check FN_WINE, since runners have override to insert this.
+	wine, err := getConfigContent("FN_WINE", output.Bytes())
+	if err != nil || wine != "1982 Margaux" {
+		t.Fatalf("getConfigContent/FN_WINE check failed (%v) on %v", err, output)
+	}
+}
+
+func TestCanExecuteTriggerBigOutput(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	app := ensureApp(t, rp.ValidApp())
+	fn := ensureFn(t, rp.ValidFn(app.ID))
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	// Approx 5.3MB output
+	body := `{"echoContent": "HelloWorld", "sleepTime": 0, "isDebug": true, "trailerRepeat": 410000}`
+	content := bytes.NewBuffer([]byte(body))
+	output := &bytes.Buffer{}
+
+	resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+
+	t.Logf("getEchoContent/HelloWorld size %d", len(output.Bytes()))
+
+	echo, err := getEchoContent(output.Bytes())
+	if err != nil || echo != "HelloWorld" {
+		t.Fatalf("getEchoContent/HelloWorld check failed on %v", output)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode check failed on %v", resp.StatusCode)
+	}
+}
+
+func TestCanExecuteTriggerTooBigOutput(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	app := ensureApp(t, rp.ValidApp())
+	fn := ensureFn(t, rp.ValidFn(app.ID))
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	// > 6MB output
+	body := `{"echoContent": "HelloWorld", "sleepTime": 0, "isDebug": true, "trailerRepeat": 600000}`
+	content := bytes.NewBuffer([]byte(body))
+	output := &bytes.Buffer{}
+
+	resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+
+	exp := "{\"message\":\"function response too large\"}\n"
+	actual := output.String()
+
+	if !strings.Contains(exp, actual) || len(exp) != len(actual) {
+		t.Fatalf("Assertion error.\n\tExpected: %v\n\tActual: %v", exp, output.String())
+	}
+
+	if resp.StatusCode != http.StatusBadGateway {
+		t.Fatalf("StatusCode check failed on %v", resp.StatusCode)
+	}
+}
+
+func TestCanExecuteTriggerEmptyOutput(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	app := ensureApp(t, rp.ValidApp())
+	fn := ensureFn(t, rp.ValidFn(app.ID))
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	// empty body output
+	body := `{"sleepTime": 0, "isDebug": true, "isEmptyBody": true}`
+	content := bytes.NewBuffer([]byte(body))
+	output := &bytes.Buffer{}
+
+	resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+
+	actual := output.String()
+
+	if 0 != len(actual) {
+		t.Fatalf("Assertion error.\n\tExpected empty\n\tActual: %v", output.String())
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode check failed on %v", resp.StatusCode)
+	}
+}
+
+func TestBasicTriggerConcurrentExecution(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	app := ensureApp(t, rp.ValidApp())
+	fn := ensureFn(t, rp.ValidFn(app.ID))
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	results := make(chan error)
+	concurrentFuncs := 10
+	for i := 0; i < concurrentFuncs; i++ {
+		go func() {
+			body := `{"echoContent": "HelloWorld", "sleepTime": 0, "isDebug": true}`
+			content := bytes.NewBuffer([]byte(body))
+			output := &bytes.Buffer{}
+			resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+			if err != nil {
+				results <- fmt.Errorf("Got unexpected error: %v", err)
+				return
+			}
+
+			echo, err := getEchoContent(output.Bytes())
+			if err != nil || echo != "HelloWorld" {
+				results <- fmt.Errorf("Assertion error.\n\tActual: %v", output.String())
+				return
+			}
+			if resp.StatusCode != http.StatusOK {
+				results <- fmt.Errorf("StatusCode check failed on %v", resp.StatusCode)
+				return
+			}
+
+			results <- nil
+		}()
+	}
+	for i := 0; i < concurrentFuncs; i++ {
+		err := <-results
+		if err != nil {
+			t.Fatalf("Error in basic concurrency execution test: %v", err)
+		}
+	}
+
+}
+
+func TestTriggerSaturatedSystem(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 4*time.Second)
+	defer cancel()
+
+	app := ensureApp(t, rp.ValidApp())
+	validFn := rp.ValidFn(app.ID)
+	validFn.ResourceConfig.Timeout = 1
+	validFn.ResourceConfig.Memory = 300
+
+	fn := ensureFn(t, validFn)
+	trigger := ensureTrigger(t, rp.ValidTrigger(app.ID, fn.ID))
+
+	lb, err := LB()
+	if err != nil {
+		t.Fatalf("Got unexpected error: %v", err)
+	}
+	u := url.URL{
+		Scheme: "http",
+		Host:   lb,
+	}
+	u.Path = path.Join(u.Path, "t", app.Name, trigger.Source)
+
+	body := `{"echoContent": "HelloWorld", "sleepTime": 0, "isDebug": true}`
+	content := bytes.NewBuffer([]byte(body))
+	output := &bytes.Buffer{}
+
+	resp, err := callTrigger(ctx, u.String(), content, output, "POST")
+	if resp != nil || err == nil || ctx.Err() == nil {
+		t.Fatalf("Expected response: %v err:%v", resp, err)
+	}
+}
+
+func callTrigger(ctx context.Context, u string, content io.Reader, output io.Writer, method string) (*http.Response, error) {
+	if method == "" {
+		if content == nil {
+			method = "GET"
+		} else {
+			method = "POST"
+		}
+	}
+
+	req, err := http.NewRequest(method, u, content)
+	if err != nil {
+		return nil, fmt.Errorf("error running route: %s", err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req = req.WithContext(ctx)
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("error running route: %s", err)
+	}
+
+	io.Copy(output, resp.Body)
+
+	return resp, nil
+}
+
+func getAPIURL() (string, *url.URL) {
+	apiURL := getEnv("FN_API_URL", "http://localhost:8085")
+	u, err := url.Parse(apiURL)
+	if err != nil {
+		log.Fatalf("Couldn't parse API URL: %s error: %s", apiURL, err)
+	}
+	return apiURL, u
+}
+
+func host() string {
+	u, _ := getAPIURL()
+	return u
+}
+
+const (
+	appName   = "systemtestapp"
+	routeName = "/systemtestroute"
+	image     = "fnproject/fn-test-utils"
+	format    = "json"
+	memory    = 128
+	typ       = "sync"
+)
+
+func ensureApp(t *testing.T, app *models.App) *models.App {
+	var buf bytes.Buffer
+	err := json.NewEncoder(&buf).Encode(app)
+	if err != nil {
+		t.Fatal("error encoding body", err)
+	}
+
+	urlStr := host() + "/v2/apps"
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		t.Fatal("error creating url", urlStr, err)
+	}
+
+	req, err := http.NewRequest("POST", u.String(), &buf)
+	if err != nil {
+		t.Fatal("error creating request", err)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal("error creating route", err)
+	}
+
+	buf.Reset()
+	io.Copy(&buf, resp.Body)
+	if resp.StatusCode != 200 {
+		t.Fatal("error creating/updating app or otherwise ensuring it exists:", resp.StatusCode, buf.String())
+	}
+
+	var appOut models.App
+	err = json.NewDecoder(&buf).Decode(&appOut)
+	if err != nil {
+		t.Fatal("error decoding response")
+	}
+
+	return &appOut
+}
+
+func ensureFn(t *testing.T, fn *models.Fn) *models.Fn {
+
+	var buf bytes.Buffer
+	err := json.NewEncoder(&buf).Encode(fn)
+	if err != nil {
+		t.Fatal("error encoding body", err)
+	}
+
+	urlStr := host() + "/v2/fns"
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		t.Fatal("error creating url", urlStr, err)
+	}
+
+	req, err := http.NewRequest("POST", u.String(), &buf)
+	if err != nil {
+		t.Fatal("error creating request", err)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal("error creating route", err)
+	}
+
+	buf.Reset()
+	io.Copy(&buf, resp.Body)
+	if resp.StatusCode != 200 {
+		t.Fatal("error creating/updating app or otherwise ensuring it exists:", resp.StatusCode, buf.String())
+	}
+
+	var fnOut models.Fn
+	err = json.NewDecoder(&buf).Decode(&fnOut)
+	if err != nil {
+		t.Fatal("error decoding response")
+	}
+
+	return &fnOut
+
+}
+
+func ensureTrigger(t *testing.T, trigger *models.Trigger) *models.Trigger {
+
+	var buf bytes.Buffer
+	err := json.NewEncoder(&buf).Encode(trigger)
+	if err != nil {
+		t.Fatal("error encoding body", err)
+	}
+
+	urlStr := host() + "/v2/triggers"
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		t.Fatal("error creating url", urlStr, err)
+	}
+
+	req, err := http.NewRequest("POST", u.String(), &buf)
+	if err != nil {
+		t.Fatal("error creating request", err)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal("error creating route", err)
+	}
+
+	buf.Reset()
+	io.Copy(&buf, resp.Body)
+	if resp.StatusCode != 200 {
+		t.Fatal("error creating/updating app or otherwise ensuring it exists:", resp.StatusCode, buf.String())
+	}
+
+	var triggerOut models.Trigger
+	err = json.NewDecoder(&buf).Decode(&triggerOut)
+	if err != nil {
+		t.Fatal("error decoding response")
+	}
+
+	return &triggerOut
+}

test/fn-system-tests/exec_route_test.go

@@ -4,10 +4,8 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
-	"log"
 	"net/http"
 	"net/url"
 	"path"
@@ -18,51 +16,7 @@ import (
 	"github.com/fnproject/fn/api/models"
 )
 
-// See fn-test-utils for json response
+// TODO deprecate with routes
-func getEchoContent(respBytes []byte) (string, error) {
-
-	var respJs map[string]interface{}
-
-	err := json.Unmarshal(respBytes, &respJs)
-	if err != nil {
-		return "", err
-	}
-
-	req, ok := respJs["request"].(map[string]interface{})
-	if !ok {
-		return "", errors.New("unexpected json: request map")
-	}
-
-	echo, ok := req["echoContent"].(string)
-	if !ok {
-		return "", errors.New("unexpected json: echoContent string")
-	}
-
-	return echo, nil
-}
-
-// See fn-test-utils for json response
-func getConfigContent(key string, respBytes []byte) (string, error) {
-
-	var respJs map[string]interface{}
-
-	err := json.Unmarshal(respBytes, &respJs)
-	if err != nil {
-		return "", err
-	}
-
-	cfg, ok := respJs["config"].(map[string]interface{})
-	if !ok {
-		return "", errors.New("unexpected json: config map")
-	}
-
-	val, ok := cfg[key].(string)
-	if !ok {
-		return "", fmt.Errorf("unexpected json: %s string", key)
-	}
-
-	return val, nil
-}
 
 func TestCanExecuteFunction(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
@@ -330,29 +284,6 @@ func callFN(ctx context.Context, u string, content io.Reader, output io.Writer,
 	return resp, nil
 }
 
-func getAPIURL() (string, *url.URL) {
-	apiURL := getEnv("FN_API_URL", "http://localhost:8085")
-	u, err := url.Parse(apiURL)
-	if err != nil {
-		log.Fatalf("Couldn't parse API URL: %s error: %s", apiURL, err)
-	}
-	return apiURL, u
-}
-
-func host() string {
-	u, _ := getAPIURL()
-	return u
-}
-
-const (
-	appName   = "systemtestapp"
-	routeName = "/systemtestroute"
-	image     = "fnproject/fn-test-utils"
-	format    = "json"
-	memory    = 128
-	typ       = "sync"
-)
-
 func ensureRoute(t *testing.T, rts ...*models.Route) *models.Route {
 	var rt *models.Route
 	if len(rts) > 0 {

test/fn-system-tests/system_test.go

@@ -224,12 +224,12 @@ func SetUpLBNode(ctx context.Context) (*server.Server, error) {
 
 	// Create an LB Agent with a Call Overrider to intercept calls in GetCall(). Overrider in this example
 	// scrubs CPU/TmpFsSize and adds FN_CHEESE key/value into extensions.
-	lbAgent, err := agent.NewLBAgent(agent.NewCachedDataAccess(cl), nodePool, placer, agent.WithLBCallOverrider(LBCallOverrider))
+	lbAgent, err := agent.NewLBAgent(cl, nodePool, placer, agent.WithLBCallOverrider(LBCallOverrider))
 	if err != nil {
 		return nil, err
 	}
 
-	opts = append(opts, server.WithAgent(lbAgent))
+	opts = append(opts, server.WithAgent(lbAgent), server.WithReadDataAccess(agent.NewCachedDataAccess(cl)))
 	return server.New(ctx, opts...), nil
 }
 
@@ -267,7 +267,6 @@ func SetUpPureRunnerNode(ctx context.Context, nodeNum int) (*server.Server, erro
 	innerAgent := agent.New(ds,
 		agent.WithConfig(cfg),
 		agent.WithDockerDriver(drv),
-		agent.WithoutAsyncDequeue(),
 		agent.WithCallOverrider(PureRunnerCallOverrider))
 
 	cancelCtx, cancel := context.WithCancel(ctx)