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main.go
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main.go
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package main
import (
"flag"
"fmt"
"log"
"net/http"
"os"
"os/signal"
"github.com/briandowns/aion/config"
"github.com/briandowns/aion/controllers"
"github.com/briandowns/aion/database"
"github.com/briandowns/aion/dispatcher"
"github.com/codegangsta/negroni"
"github.com/goincremental/negroni-sessions"
"github.com/goincremental/negroni-sessions/cookiestore"
"github.com/gorilla/mux"
"github.com/pborman/uuid"
"github.com/thoas/stats"
"github.com/unrolled/render"
)
// CLI flags
var (
portFlag string
queueHostFlag string
setupFlag bool
dbUserFlag string
dbPassFlag string
dbHostFlag string
dbPortFlag int
dbNameFlag string
dbSetupFlag bool
resultWorkers int
)
var jobRegistryChan = make(chan database.Job)
var taskRegistryChan = make(chan database.Task)
var signalsChan = make(chan os.Signal, 1)
// Conf holds the current configuration
var Conf *config.Config
func init() {
flag.StringVar(&queueHostFlag, "nsq-host", "", "NSQ server to connect to")
flag.StringVar(&portFlag, "port", ":9898", "port to run the server")
flag.StringVar(&dbUserFlag, "db-user", "aion", "database username")
flag.StringVar(&dbPassFlag, "db-pass", "aion", "database password")
flag.StringVar(&dbHostFlag, "db-host", "localhost", "database hostname")
flag.IntVar(&dbPortFlag, "db-port", 3306, "database port")
flag.StringVar(&dbNameFlag, "db-name", "aion", "database name")
flag.BoolVar(&dbSetupFlag, "db-setup", false, "intial DB Configuration")
flag.IntVar(&resultWorkers, "result-workers", 5, "number of result workers to start")
}
func main() {
flag.Parse()
signal.Notify(signalsChan, os.Interrupt)
go func() {
for sig := range signalsChan {
log.Printf("Exiting... %v\n", sig)
signalsChan = nil
os.Exit(1)
}
}()
if queueHostFlag == "" || dbUserFlag == "" || dbPassFlag == "" ||
dbHostFlag == "" || dbPortFlag == 0 || dbNameFlag == "" || resultWorkers < 3 {
flag.Usage()
os.Exit(1)
}
// assign
Conf = &config.Config{
Database: config.DBConf{
DBUser: dbUserFlag,
DBPass: dbPassFlag,
DBHost: dbHostFlag,
DBPort: dbPortFlag,
DBName: dbNameFlag,
},
QueueHost: queueHostFlag,
ResultWorkers: resultWorkers,
}
if dbSetupFlag {
fmt.Println(Conf.Database.DBUser, Conf.Database.DBPass, Conf.Database.DBHost, Conf.Database.DBPort, Conf.Database.DBName)
db, err := database.NewDatabase(Conf)
if err != nil {
log.Fatalln(err)
}
defer db.Conn.Close()
db.Setup()
os.Exit(0)
}
dispatch := dispatcher.NewDispatcher(Conf)
go dispatch.Run()
go watchForNewJobs()
go watchForNewTasks()
go watchForNewResults()
go watchForNewCommands()
// setup the renderer for returning our JSON
ren := render.New(render.Options{})
store := cookiestore.New([]byte(uuid.NewUUID().String()))
// initialize the web framework
n := negroni.New(
negroni.NewRecovery(),
negroni.NewLogger(),
negroni.NewStatic(http.Dir("public")),
)
n.Use(sessions.Sessions("session", store))
statsMiddleware := stats.New()
// create a router to handle the requests coming in to our endpoints
router := mux.NewRouter()
// Frontend Entry Point
router.HandleFunc(controllers.FrontEnd, controllers.FrontendHandler()).Methods("GET")
// Jobs Route
router.HandleFunc(controllers.JobsPath, controllers.JobsRouteHandler(ren, Conf)).Methods("GET")
// Job By ID Route
router.HandleFunc(controllers.JobByID, controllers.JobByIDRouteHandler(ren, Conf)).Methods("GET")
// Job Delete By ID Route
router.HandleFunc(controllers.JobByID, controllers.JobDeleteByIDRouteHandler(ren, Conf)).Methods("DELETE")
// New Jobs Route
router.HandleFunc(controllers.JobsPath, controllers.NewJobRouteHandler(ren, dispatch)).Methods("POST")
// Tasks Route
router.HandleFunc(controllers.TasksPath, controllers.TasksRouteHandler(ren, Conf)).Methods("GET")
// Task By ID Route
router.HandleFunc(controllers.TaskByID, controllers.TaskByIDRouteHandler(ren, Conf)).Methods("GET")
// Task Delete By ID Route
router.HandleFunc(controllers.TaskByID, controllers.TaskDeleteByIDRouteHandler(ren, Conf, dispatch)).Methods("DELETE")
// New Tasks Route
router.HandleFunc(controllers.TasksPath, controllers.NewTaskRouteHandler(ren, dispatch)).Methods("POST")
// Commands Route
router.HandleFunc(controllers.CommandsPath, controllers.CommandsRouteHandler(ren, Conf)).Methods("GET")
// Cmmand By ID Route
router.HandleFunc(controllers.CommandByID, controllers.CommandByIDRouteHandler(ren, Conf)).Methods("GET")
// Command Delete By ID Route
router.HandleFunc(controllers.CommandByID, controllers.CommandDeleteByIDRouteHandler(ren, Conf)).Methods("DELETE")
// New Commands Route
router.HandleFunc(controllers.CommandsPath, controllers.NewCommandRouteHandler(ren, dispatch)).Methods("POST")
// API Statistics Route
router.HandleFunc(controllers.APIStats, controllers.AdminAionAPIServerStats(statsMiddleware)).Methods("GET")
n.Use(statsMiddleware)
n.UseHandler(router)
n.Run(portFlag)
}