67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
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package main
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import (
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"fmt"
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"os"
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"os/signal"
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"time"
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"io"
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"bitbucket.org/nemt/nemt-portal-api/data"
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"bitbucket.org/nemt/nemt-portal-api/domain/service"
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"bitbucket.org/nemt/nemt-portal-api/infra/cache"
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"bitbucket.org/nemt/nemt-portal-api/infra/config"
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"bitbucket.org/nemt/nemt-portal-api/infra/logger"
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"bitbucket.org/nemt/nemt-portal-api/server"
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)
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func main() {
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var err error
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cfg, err := config.Read()
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endAsErr(err, "Could not read configuration file.", os.Stdout, os.Stderr)
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log, err := logger.New(cfg)
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endAsErr(err, "Could not create logging structure.", os.Stdout, os.Stderr)
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log.Printf("Connecting to the database at %s:%d.\n", cfg.DB.Host, cfg.DB.Port)
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db, err := data.Connect(cfg)
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endAsErr(err, "Could not connect to database.", log.InfoWriter(), log.ErrorWriter())
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atInterruption(func() {
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log.Printf("Closing DB Connection.")
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db.Close()
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})
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log.Printf("Connecting to the cache server at %s:%d.\n", cfg.Cache.Server, cfg.Cache.Port)
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cache := cache.Instance(cfg)
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svc, err := service.New(db, cache, cfg, log)
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endAsErr(err, "Could not create service structure.", log.InfoWriter(), log.ErrorWriter())
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// Runs server.
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log.Info("Runninng server at localhost:", cfg.HTTP.Port)
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err = server.Instance(svc, cfg, log, cache).Run()
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endAsErr(err, "Could not start the server.", log.InfoWriter(), log.ErrorWriter())
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}
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func atInterruption(fn func()) {
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go func() {
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sc := make(chan os.Signal, 1)
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signal.Notify(sc, os.Interrupt)
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<-sc
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fn()
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os.Exit(0)
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}()
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}
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func endAsErr(err error, message string, infow io.Writer, errorw io.Writer) {
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if err != nil {
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fmt.Fprintln(errorw, "Error:", err)
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fmt.Fprintln(infow, message)
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time.Sleep(time.Millisecond * 50) // needed for printing all messages before exiting
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os.Exit(1)
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}
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}
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