scaffold-goweb/cmd/server/main.go.gotpl

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package main
import (
"net/http"
"{{ .ProjectNamespace }}/internal/route"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"gitlab.com/wpetit/goweb/middleware/container"
"flag"
"fmt"
"log"
"os"
"{{ .ProjectNamespace }}/internal/config"
"github.com/pkg/errors"
)
//nolint: gochecknoglobals
var (
configFile = ""
workdir = ""
dumpConfig = false
version = false
)
// nolint: gochecknoglobals
var (
GitRef = "unknown"
ProjectVersion = "unknown"
BuildDate = "unknown"
)
//nolint: gochecknoinits
func init() {
flag.StringVar(&configFile, "config", configFile, "configuration file")
flag.StringVar(&workdir, "workdir", workdir, "working directory")
flag.BoolVar(&dumpConfig, "dump-config", dumpConfig, "dump configuration and exit")
flag.BoolVar(&version, "version", version, "show version and exit")
}
func main() {
flag.Parse()
if version {
fmt.Printf("%s (%s) - %s\n", ProjectVersion, GitRef, BuildDate)
os.Exit(0)
}
// Switch to new working directory if defined
if workdir != "" {
if err := os.Chdir(workdir); err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not change working directory to '%s'", workdir))
}
}
// Load configuration file if defined, use default configuration otherwise
var conf *config.Config
var err error
if configFile != "" {
conf, err = config.NewFromFile(configFile)
if err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not load config file '%s'", configFile))
}
} else {
if dumpConfig {
conf = config.NewDumpDefault()
} else {
conf = config.NewDefault()
}
}
// Dump configuration if asked
if dumpConfig {
if err := config.Dump(conf, os.Stdout); err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not dump config"))
}
os.Exit(0)
}
// Create service container
ctn, err := getServiceContainer(conf)
if err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not create service container"))
}
r := chi.NewRouter()
// Define base middlewares
r.Use(middleware.Logger)
r.Use(middleware.Recoverer)
// Expose service container on router
r.Use(container.ServiceContainer(ctn))
// Define routes
if err := route.Mount(r, conf); err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not mount http routes"))
}
log.Printf("listening on '%s'", conf.HTTP.Address)
if err := http.ListenAndServe(conf.HTTP.Address, r); err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not listen on '%s'", conf.HTTP.Address))
}
}