Frontend/backend project structure

+ Base implementation of a differential synchronization based on Neil
  Fraser article/talk

See https://www.youtube.com/watch?v=S2Hp_1jqpY8

server/cmd/server/container.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"forge.cadoles.com/wpetit/guesstimate/internal/config"
+	"forge.cadoles.com/wpetit/guesstimate/internal/storm"
+	"gitlab.com/wpetit/goweb/service"
+	"gitlab.com/wpetit/goweb/service/build"
+)
+
+func getServiceContainer(conf *config.Config) (*service.Container, error) {
+	// Initialize and configure service container
+	ctn := service.NewContainer()
+
+	ctn.Provide(build.ServiceName, build.ServiceProvider(ProjectVersion, GitRef, BuildDate))
+
+	// Create and expose config service provider
+	ctn.Provide(config.ServiceName, config.ServiceProvider(conf))
+
+	ctn.Provide(storm.ServiceName, storm.ServiceProvider(
+		storm.WithPath(conf.Data.Path),
+	))
+
+	return ctn, nil
+}

server/cmd/server/main.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"net/http"
+
+	"forge.cadoles.com/wpetit/guesstimate/internal/route"
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/middleware"
+	"gitlab.com/wpetit/goweb/middleware/container"
+
+	"flag"
+	"fmt"
+	"log"
+
+	"os"
+
+	"forge.cadoles.com/wpetit/guesstimate/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)
+	}
+
+	if err := config.WithEnvironment(conf); err != nil {
+		log.Fatalf("%+v", errors.Wrap(err, "could not override config with environment"))
+	}
+
+	// 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))
+	}
+}