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server.go
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server.go
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package main
import (
"./managers/database"
"./managers/network"
"fmt"
"log"
"net/http"
"os"
"strconv"
)
var (
env = []string{"VR_API_HOST",
"VR_API_PORT",
"VR_DB_HOST",
"VR_DB_PORT",
"VR_DB_USR",
"VR_DB_PWD",
"VR_DB_NAME"}
svrChan = make(chan bool)
)
func run(host string, port int) {
svrChan <- true
if err := http.ListenAndServe(fmt.Sprintf("%s:%d", host, port), nil); err != nil {
log.Fatal(err)
}
svrChan <- false
}
func checkEnv() {
for _, key := range env {
if _, ok := os.LookupEnv(key); !ok {
log.Fatalf("Environment variable %s is not set", key)
}
}
}
func main() {
checkEnv()
fs := http.FileServer(http.Dir("static"))
http.Handle("/", fs)
http.HandleFunc("/api/", network.RequestHandler)
dbPort, err := strconv.Atoi(os.Getenv("VR_DB_PORT"))
if err != nil {
log.Fatal(err)
}
dbConnStr := fmt.Sprintf("user=%s password='%s' host=%s port=%d dbname=%s sslmode=disable",
os.Getenv("VR_DB_USR"),
os.Getenv("VR_DB_PWD"),
os.Getenv("VR_DB_HOST"),
dbPort,
os.Getenv("VR_DB_NAME"))
database.SetDbConnString(dbConnStr)
port, err := strconv.Atoi(os.Getenv("VR_API_PORT"))
if err != nil {
log.Fatal(err)
}
go run(os.Getenv("VR_API_HOST"), port)
for {
if !<-svrChan {
if _, err := fmt.Println("Server exiting"); err != nil {
log.Fatal(err)
}
break
}
}
}