mirror of
https://github.com/fnproject/fn.git
synced 2022-10-28 21:29:17 +03:00
7aa1981fba
* fix apps & routes creation/update * refactor datastore and added postgres tests * added test-datastore and fixed circleci test
515 lines
9.4 KiB
Go
515 lines
9.4 KiB
Go
package postgres
|
|
|
|
import (
|
|
"database/sql"
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/url"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
"github.com/iron-io/functions/api/models"
|
|
"github.com/lib/pq"
|
|
_ "github.com/lib/pq"
|
|
)
|
|
|
|
const routesTableCreate = `
|
|
CREATE TABLE IF NOT EXISTS routes (
|
|
app_name character varying(256) NOT NULL,
|
|
path text NOT NULL,
|
|
image character varying(256) NOT NULL,
|
|
memory integer NOT NULL,
|
|
headers text NOT NULL,
|
|
config text NOT NULL,
|
|
PRIMARY KEY (app_name, path)
|
|
);`
|
|
|
|
const appsTableCreate = `CREATE TABLE IF NOT EXISTS apps (
|
|
name character varying(256) NOT NULL PRIMARY KEY,
|
|
config text NOT NULL
|
|
);`
|
|
|
|
const extrasTableCreate = `CREATE TABLE IF NOT EXISTS extras (
|
|
key character varying(256) NOT NULL PRIMARY KEY,
|
|
value character varying(256) NOT NULL
|
|
);`
|
|
|
|
const routeSelector = `SELECT app_name, path, image, memory, headers, config FROM routes`
|
|
|
|
type rowScanner interface {
|
|
Scan(dest ...interface{}) error
|
|
}
|
|
|
|
type rowQuerier interface {
|
|
QueryRow(query string, args ...interface{}) *sql.Row
|
|
}
|
|
|
|
type PostgresDatastore struct {
|
|
db *sql.DB
|
|
}
|
|
|
|
func New(url *url.URL) (models.Datastore, error) {
|
|
db, err := sql.Open("postgres", url.String())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = db.Ping()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
maxIdleConns := 30 // c.MaxIdleConnections
|
|
db.SetMaxIdleConns(maxIdleConns)
|
|
logrus.WithFields(logrus.Fields{"max_idle_connections": maxIdleConns}).Info("Postgres dialed")
|
|
|
|
pg := &PostgresDatastore{
|
|
db: db,
|
|
}
|
|
|
|
for _, v := range []string{routesTableCreate, appsTableCreate, extrasTableCreate} {
|
|
_, err = db.Exec(v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return pg, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) InsertApp(app *models.App) (*models.App, error) {
|
|
var cbyte []byte
|
|
var err error
|
|
|
|
if app == nil {
|
|
return nil, models.ErrDatastoreEmptyApp
|
|
}
|
|
|
|
if app.Name == "" {
|
|
return nil, models.ErrDatastoreEmptyAppName
|
|
}
|
|
|
|
if app.Config != nil {
|
|
cbyte, err = json.Marshal(app.Config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
_, err = ds.db.Exec(`INSERT INTO apps (name, config) VALUES ($1, $2);`,
|
|
app.Name,
|
|
string(cbyte),
|
|
)
|
|
|
|
if err != nil {
|
|
pqErr := err.(*pq.Error)
|
|
if pqErr.Code == "23505" {
|
|
return nil, models.ErrAppsAlreadyExists
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return app, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) UpdateApp(app *models.App) (*models.App, error) {
|
|
if app == nil {
|
|
return nil, models.ErrAppsNotFound
|
|
}
|
|
|
|
cbyte, err := json.Marshal(app.Config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
res, err := ds.db.Exec(`
|
|
UPDATE apps SET
|
|
config = $2
|
|
WHERE name = $1
|
|
RETURNING *;
|
|
`,
|
|
app.Name,
|
|
string(cbyte),
|
|
)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
n, err := res.RowsAffected()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if n == 0 {
|
|
return nil, models.ErrAppsNotFound
|
|
}
|
|
|
|
return app, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) RemoveApp(appName string) error {
|
|
if appName == "" {
|
|
return models.ErrDatastoreEmptyAppName
|
|
}
|
|
|
|
_, err := ds.db.Exec(`
|
|
DELETE FROM apps
|
|
WHERE name = $1
|
|
`, appName)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) GetApp(name string) (*models.App, error) {
|
|
if name == "" {
|
|
return nil, models.ErrDatastoreEmptyAppName
|
|
}
|
|
|
|
row := ds.db.QueryRow("SELECT name, config FROM apps WHERE name=$1", name)
|
|
|
|
var resName string
|
|
var config string
|
|
err := row.Scan(&resName, &config)
|
|
|
|
res := &models.App{
|
|
Name: resName,
|
|
}
|
|
|
|
json.Unmarshal([]byte(config), &res.Config)
|
|
|
|
if err != nil {
|
|
if err == sql.ErrNoRows {
|
|
return nil, models.ErrAppsNotFound
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func scanApp(scanner rowScanner, app *models.App) error {
|
|
var configStr string
|
|
|
|
err := scanner.Scan(
|
|
&app.Name,
|
|
&configStr,
|
|
)
|
|
|
|
if configStr == "" {
|
|
return models.ErrAppsNotFound
|
|
}
|
|
|
|
json.Unmarshal([]byte(configStr), &app.Config)
|
|
|
|
return err
|
|
}
|
|
|
|
func (ds *PostgresDatastore) GetApps(filter *models.AppFilter) ([]*models.App, error) {
|
|
res := []*models.App{}
|
|
|
|
rows, err := ds.db.Query(`
|
|
SELECT DISTINCT *
|
|
FROM apps`,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
for rows.Next() {
|
|
var app models.App
|
|
err := scanApp(rows, &app)
|
|
|
|
if err != nil {
|
|
if err == sql.ErrNoRows {
|
|
return res, nil
|
|
}
|
|
return res, err
|
|
}
|
|
res = append(res, &app)
|
|
}
|
|
|
|
if err := rows.Err(); err != nil {
|
|
return res, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) InsertRoute(route *models.Route) (*models.Route, error) {
|
|
if route == nil {
|
|
return nil, models.ErrDatastoreEmptyRoute
|
|
}
|
|
|
|
hbyte, err := json.Marshal(route.Headers)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
cbyte, err := json.Marshal(route.Config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
_, err = ds.db.Exec(`
|
|
INSERT INTO routes (
|
|
app_name,
|
|
path,
|
|
image,
|
|
memory,
|
|
headers,
|
|
config
|
|
)
|
|
VALUES ($1, $2, $3, $4, $5, $6);`,
|
|
route.AppName,
|
|
route.Path,
|
|
route.Image,
|
|
route.Memory,
|
|
string(hbyte),
|
|
string(cbyte),
|
|
)
|
|
|
|
if err != nil {
|
|
pqErr := err.(*pq.Error)
|
|
if pqErr.Code == "23505" {
|
|
return nil, models.ErrRoutesAlreadyExists
|
|
}
|
|
return nil, err
|
|
}
|
|
return route, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) UpdateRoute(route *models.Route) (*models.Route, error) {
|
|
if route == nil {
|
|
return nil, models.ErrDatastoreEmptyRoute
|
|
}
|
|
|
|
hbyte, err := json.Marshal(route.Headers)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
cbyte, err := json.Marshal(route.Config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
res, err := ds.db.Exec(`
|
|
UPDATE routes SET
|
|
image = $3,
|
|
memory = $4,
|
|
headers = $5,
|
|
config = $6
|
|
WHERE app_name = $1 AND path = $2;`,
|
|
route.AppName,
|
|
route.Path,
|
|
route.Image,
|
|
route.Memory,
|
|
string(hbyte),
|
|
string(cbyte),
|
|
)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
n, err := res.RowsAffected()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if n == 0 {
|
|
return nil, models.ErrRoutesNotFound
|
|
}
|
|
|
|
return route, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) RemoveRoute(appName, routePath string) error {
|
|
if appName == "" {
|
|
return models.ErrDatastoreEmptyAppName
|
|
}
|
|
|
|
if routePath == "" {
|
|
return models.ErrDatastoreEmptyRoutePath
|
|
}
|
|
|
|
res, err := ds.db.Exec(`
|
|
DELETE FROM routes
|
|
WHERE path = $1 AND app_name = $2
|
|
`, routePath, appName)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
n, err := res.RowsAffected()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if n == 0 {
|
|
return models.ErrRoutesRemoving
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func scanRoute(scanner rowScanner, route *models.Route) error {
|
|
var headerStr string
|
|
var configStr string
|
|
|
|
err := scanner.Scan(
|
|
&route.AppName,
|
|
&route.Path,
|
|
&route.Image,
|
|
&route.Memory,
|
|
&headerStr,
|
|
&configStr,
|
|
)
|
|
|
|
if headerStr == "" {
|
|
return models.ErrRoutesNotFound
|
|
}
|
|
|
|
json.Unmarshal([]byte(headerStr), &route.Headers)
|
|
json.Unmarshal([]byte(configStr), &route.Config)
|
|
|
|
return err
|
|
}
|
|
|
|
func (ds *PostgresDatastore) GetRoute(appName, routePath string) (*models.Route, error) {
|
|
if appName == "" {
|
|
return nil, models.ErrDatastoreEmptyAppName
|
|
}
|
|
|
|
if routePath == "" {
|
|
return nil, models.ErrDatastoreEmptyRoutePath
|
|
}
|
|
|
|
var route models.Route
|
|
|
|
row := ds.db.QueryRow(fmt.Sprintf("%s WHERE app_name=$1 AND path=$2", routeSelector), appName, routePath)
|
|
err := scanRoute(row, &route)
|
|
|
|
if err == sql.ErrNoRows {
|
|
return nil, models.ErrRoutesNotFound
|
|
} else if err != nil {
|
|
return nil, err
|
|
}
|
|
return &route, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) GetRoutes(filter *models.RouteFilter) ([]*models.Route, error) {
|
|
res := []*models.Route{}
|
|
filterQuery := buildFilterQuery(filter)
|
|
rows, err := ds.db.Query(fmt.Sprintf("%s %s", routeSelector, filterQuery))
|
|
// todo: check for no rows so we don't respond with a sql 500 err
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
for rows.Next() {
|
|
var route models.Route
|
|
err := scanRoute(rows, &route)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
res = append(res, &route)
|
|
|
|
}
|
|
if err := rows.Err(); err != nil {
|
|
return nil, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) GetRoutesByApp(appName string, filter *models.RouteFilter) ([]*models.Route, error) {
|
|
res := []*models.Route{}
|
|
filter.AppName = appName
|
|
filterQuery := buildFilterQuery(filter)
|
|
rows, err := ds.db.Query(fmt.Sprintf("%s %s", routeSelector, filterQuery))
|
|
// todo: check for no rows so we don't respond with a sql 500 err
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
for rows.Next() {
|
|
var route models.Route
|
|
err := scanRoute(rows, &route)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
res = append(res, &route)
|
|
|
|
}
|
|
if err := rows.Err(); err != nil {
|
|
return nil, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func buildFilterQuery(filter *models.RouteFilter) string {
|
|
filterQuery := ""
|
|
|
|
filterQueries := []string{}
|
|
if filter.Path != "" {
|
|
filterQueries = append(filterQueries, fmt.Sprintf("path = '%s'", filter.Path))
|
|
}
|
|
|
|
if filter.AppName != "" {
|
|
filterQueries = append(filterQueries, fmt.Sprintf("app_name = '%s'", filter.AppName))
|
|
}
|
|
|
|
if filter.Image != "" {
|
|
filterQueries = append(filterQueries, fmt.Sprintf("image = '%s'", filter.Image))
|
|
}
|
|
|
|
for i, field := range filterQueries {
|
|
if i == 0 {
|
|
filterQuery = fmt.Sprintf("WHERE %s ", field)
|
|
} else {
|
|
filterQuery = fmt.Sprintf("%s AND %s", filterQuery, field)
|
|
}
|
|
}
|
|
|
|
return filterQuery
|
|
}
|
|
|
|
func (ds *PostgresDatastore) Put(key, value []byte) error {
|
|
_, err := ds.db.Exec(`
|
|
INSERT INTO extras (
|
|
key,
|
|
value
|
|
)
|
|
VALUES ($1, $2)
|
|
ON CONFLICT (key) DO UPDATE SET
|
|
value = $1;
|
|
`, value)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (ds *PostgresDatastore) Get(key []byte) ([]byte, error) {
|
|
row := ds.db.QueryRow("SELECT value FROM extras WHERE key=$1", key)
|
|
|
|
var value []byte
|
|
err := row.Scan(&value)
|
|
if err == sql.ErrNoRows {
|
|
return nil, nil
|
|
} else if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return value, nil
|
|
}
|