Files
fn-serverless/vendor/github.com/fnproject/fdk-go/fdk.go
Reed Allman 51ff7caeb2 Bye bye openapi (#1081)
* add DateTime sans mgo

* change all uses of strfmt.DateTime to common.DateTime, remove test strfmt usage

* remove api tests, system-test dep on api test

multiple reasons to remove the api tests:

* awkward dependency with fn_go meant generating bindings on a branched fn to
vendor those to test new stuff. this is at a minimum not at all intuitive,
worth it, nor a fun way to spend the finite amount of time we have to live.
* api tests only tested a subset of functionality that the server/ api tests
already test, and we risk having tests where one tests some thing and the
other doesn't. let's not. we have too many test suites as it is, and these
pretty much only test that we updated the fn_go bindings, which is actually a
hassle as noted above and the cli will pretty quickly figure out anyway.
* fn_go relies on openapi, which relies on mgo, which is deprecated and we'd
like to remove as a dependency. openapi is a _huge_ dep built in a NIH
fashion, that cannot simply remove the mgo dep as users may be using it.
we've now stolen their date time and otherwise killed usage of it in fn core,
for fn_go it still exists but that's less of a problem.

* update deps

removals:

* easyjson
* mgo
* go-openapi
* mapstructure
* fn_go
* purell
* go-validator

also, had to lock docker. we shouldn't use docker on master anyway, they
strongly advise against that. had no luck with latest version rev, so i locked
it to what we were using before. until next time.

the rest is just playing dep roulette, those end up removing a ton tho

* fix exec test to work

* account for john le cache
2018-06-21 11:09:16 -07:00

83 lines
2.1 KiB
Go

package fdk
import (
"context"
"io"
"net/http"
"os"
"github.com/fnproject/fdk-go/utils"
)
type Handler interface {
Serve(ctx context.Context, in io.Reader, out io.Writer)
}
type HandlerFunc func(ctx context.Context, in io.Reader, out io.Writer)
func (f HandlerFunc) Serve(ctx context.Context, in io.Reader, out io.Writer) {
f(ctx, in, out)
}
// Context will return an *fn.Ctx that can be used to read configuration and
// request information from an incoming request.
func Context(ctx context.Context) *Ctx {
utilsCtx := utils.Context(ctx)
return &Ctx{
Header: utilsCtx.Header,
Config: utilsCtx.Config,
RequestURL: utilsCtx.RequestURL,
Method: utilsCtx.Method,
}
}
func WithContext(ctx context.Context, fnctx *Ctx) context.Context {
utilsCtx := &utils.Ctx{
Header: fnctx.Header,
Config: fnctx.Config,
RequestURL: fnctx.RequestURL,
Method: fnctx.Method,
}
return utils.WithContext(ctx, utilsCtx)
}
// Ctx provides access to Config and Headers from fn.
type Ctx struct {
Header http.Header
Config map[string]string
RequestURL string
Method string
}
// AddHeader will add a header on the function response, for hot function
// formats.
func AddHeader(out io.Writer, key, value string) {
if resp, ok := out.(*utils.Response); ok {
resp.Header.Add(key, value)
}
}
// SetHeader will set a header on the function response, for hot function
// formats.
func SetHeader(out io.Writer, key, value string) {
if resp, ok := out.(*utils.Response); ok {
resp.Header.Set(key, value)
}
}
// WriteStatus will set the status code to return in the function response, for
// hot function formats.
func WriteStatus(out io.Writer, status int) {
if resp, ok := out.(*utils.Response); ok {
resp.Status = status
}
}
// Handle will run the event loop for a function. Handle should be invoked
// through main() in a user's function and can handle communication between the
// function and fn server via any of the supported formats.
func Handle(handler Handler) {
format, _ := os.LookupEnv("FN_FORMAT")
utils.Do(handler, format, os.Stdin, os.Stdout)
}