Extract some code in packages

- This will help split stuff in smaller, better tested packages
- This moves some stuff like the traefik command to package `cmd`

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

.github/CONTRIBUTING.md

@@ -67,7 +67,8 @@ $ go generate
 $ go build
 # Using gox to build multiple platform
 $ gox "linux darwin" "386 amd64 arm" \
-    -output="dist/traefik_{{.OS}}-{{.Arch}}"
+    -output="dist/traefik_{{.OS}}-{{.Arch}}" \
+    ./cmd/traefik
 # run other commands like tests
 ```
 

cmd/traefik/bug.go

@@ -1,4 +1,4 @@
-package cmd
+package main
 
 import (
 	"bytes"
@@ -39,8 +39,8 @@ var (
 `
 )
 
-// NewBugCmd builds a new Bug command
-func NewBugCmd(traefikConfiguration interface{}, traefikPointersConfiguration interface{}) *flaeg.Command {
+// newBugCmd builds a new Bug command
+func newBugCmd(traefikConfiguration interface{}, traefikPointersConfiguration interface{}) *flaeg.Command {
 
 	//version Command init
 	return &flaeg.Command{

cmd/traefik/traefik.go

@@ -17,11 +17,11 @@ import (
 	"github.com/containous/staert"
 	"github.com/containous/traefik/acme"
 	"github.com/containous/traefik/cluster"
-	"github.com/containous/traefik/cmd"
 	"github.com/containous/traefik/log"
 	"github.com/containous/traefik/middlewares"
 	"github.com/containous/traefik/provider/kubernetes"
 	"github.com/containous/traefik/safe"
+	"github.com/containous/traefik/server"
 	"github.com/containous/traefik/types"
 	"github.com/containous/traefik/version"
 	"github.com/coreos/go-systemd/daemon"
@@ -33,8 +33,8 @@ func main() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
 
 	//traefik config inits
-	traefikConfiguration := NewTraefikConfiguration()
-	traefikPointersConfiguration := NewTraefikDefaultPointersConfiguration()
+	traefikConfiguration := server.NewTraefikConfiguration()
+	traefikPointersConfiguration := server.NewTraefikDefaultPointersConfiguration()
 	//traefik Command init
 	traefikCmd := &flaeg.Command{
 		Name: "traefik",
@@ -101,16 +101,16 @@ Complete documentation is available at https://traefik.io`,
 	//init flaeg source
 	f := flaeg.New(traefikCmd, os.Args[1:])
 	//add custom parsers
-	f.AddParser(reflect.TypeOf(EntryPoints{}), &EntryPoints{})
-	f.AddParser(reflect.TypeOf(DefaultEntryPoints{}), &DefaultEntryPoints{})
+	f.AddParser(reflect.TypeOf(server.EntryPoints{}), &server.EntryPoints{})
+	f.AddParser(reflect.TypeOf(server.DefaultEntryPoints{}), &server.DefaultEntryPoints{})
 	f.AddParser(reflect.TypeOf(types.Constraints{}), &types.Constraints{})
 	f.AddParser(reflect.TypeOf(kubernetes.Namespaces{}), &kubernetes.Namespaces{})
 	f.AddParser(reflect.TypeOf([]acme.Domain{}), &acme.Domains{})
 	f.AddParser(reflect.TypeOf(types.Buckets{}), &types.Buckets{})
 
 	//add commands
-	f.AddCommand(cmd.NewVersionCmd())
-	f.AddCommand(cmd.NewBugCmd(traefikConfiguration, traefikPointersConfiguration))
+	f.AddCommand(newVersionCmd())
+	f.AddCommand(newBugCmd(traefikConfiguration, traefikPointersConfiguration))
 	f.AddCommand(storeconfigCmd)
 
 	usedCmd, err := f.GetCommand()
@@ -168,7 +168,7 @@ Complete documentation is available at https://traefik.io`,
 	os.Exit(0)
 }
 
-func run(traefikConfiguration *TraefikConfiguration) {
+func run(traefikConfiguration *server.TraefikConfiguration) {
 	fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
 
 	// load global configuration
@@ -191,7 +191,7 @@ func run(traefikConfiguration *TraefikConfiguration) {
 	}
 
 	if len(globalConfiguration.EntryPoints) == 0 {
-		globalConfiguration.EntryPoints = map[string]*EntryPoint{"http": {Address: ":80"}}
+		globalConfiguration.EntryPoints = map[string]*server.EntryPoint{"http": {Address: ":80"}}
 		globalConfiguration.DefaultEntryPoints = []string{"http"}
 	}
 
@@ -241,9 +241,9 @@ func run(traefikConfiguration *TraefikConfiguration) {
 		log.Infof("Using TOML configuration file %s", traefikConfiguration.ConfigFile)
 	}
 	log.Debugf("Global configuration loaded %s", string(jsonConf))
-	server := NewServer(globalConfiguration)
-	server.Start()
-	defer server.Close()
+	svr := server.NewServer(globalConfiguration)
+	svr.Start()
+	defer svr.Close()
 	sent, err := daemon.SdNotify(true, "READY=1")
 	if !sent && err != nil {
 		log.Error("Fail to notify", err)
@@ -261,13 +261,13 @@ func run(traefikConfiguration *TraefikConfiguration) {
 			}
 		}(t)
 	}
-	server.Wait()
+	svr.Wait()
 	log.Info("Shutting down")
 }
 
 // CreateKvSource creates KvSource
 // TLS support is enable for Consul and Etcd backends
-func CreateKvSource(traefikConfiguration *TraefikConfiguration) (*staert.KvSource, error) {
+func CreateKvSource(traefikConfiguration *server.TraefikConfiguration) (*staert.KvSource, error) {
 	var kv *staert.KvSource
 	var store store.Store
 	var err error

cmd/traefik/version.go

@@ -1,4 +1,4 @@
-package cmd
+package main
 
 import (
 	"fmt"
@@ -17,8 +17,8 @@ Go version:   {{.GoVersion}}
 Built:        {{.BuildTime}}
 OS/Arch:      {{.Os}}/{{.Arch}}`
 
-// NewVersionCmd builds a new Version command
-func NewVersionCmd() *flaeg.Command {
+// newVersionCmd builds a new Version command
+func newVersionCmd() *flaeg.Command {
 
 	//version Command init
 	return &flaeg.Command{

script/binary

@@ -26,4 +26,8 @@ if [ -z "$DATE" ]; then
 fi
 
 # Build binaries
-CGO_ENABLED=0 GOGC=off go build $FLAGS -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -a -installsuffix nocgo -o dist/traefik .
+CGO_ENABLED=0 GOGC=off go build $FLAGS -ldflags "-s -w \
+    -X github.com/containous/traefik/version.Version=$VERSION \
+    -X github.com/containous/traefik/version.Codename=$CODENAME \
+    -X github.com/containous/traefik/version.BuildDate=$DATE" \
+    -a -installsuffix nocgo -o dist/traefik ./cmd/traefik

script/crossbinary

@@ -27,7 +27,7 @@ OS_ARCH_ARG=(386 amd64)
 for OS in ${OS_PLATFORM_ARG[@]}; do
   for ARCH in ${OS_ARCH_ARG[@]}; do
     echo "Building binary for $OS/$ARCH..."
-    GOARCH=$ARCH GOOS=$OS CGO_ENABLED=0 go build -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -o "dist/traefik_$OS-$ARCH" .
+    GOARCH=$ARCH GOOS=$OS CGO_ENABLED=0 go build -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -o "dist/traefik_$OS-$ARCH" ./cmd/traefik/
   done
 done
 
@@ -38,6 +38,6 @@ OS_ARCH_ARG=(arm arm64)
 for OS in ${OS_PLATFORM_ARG[@]}; do
   for ARCH in ${OS_ARCH_ARG[@]}; do
     echo "Building binary for $OS/$ARCH..."
-    GOARCH=$ARCH GOOS=$OS CGO_ENABLED=0 go build -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -o "dist/traefik_$OS-$ARCH" .
+    GOARCH=$ARCH GOOS=$OS CGO_ENABLED=0 go build -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -o "dist/traefik_$OS-$ARCH" ./cmd/traefik/
   done
 done

server/adapters.go

@@ -1,7 +1,4 @@
-/*
-Copyright
-*/
-package main
+package server
 
 import (
 	"net/http"

server/configuration.go

@@ -1,4 +1,4 @@
-package main
+package server
 
 import (
 	"crypto/tls"

server/rules.go

@@ -1,16 +1,17 @@
-package main
+package server
 
 import (
 	"errors"
 	"fmt"
-	"github.com/BurntSushi/ty/fun"
-	"github.com/containous/mux"
-	"github.com/containous/traefik/types"
 	"net"
 	"net/http"
 	"reflect"
 	"sort"
 	"strings"
+
+	"github.com/BurntSushi/ty/fun"
+	"github.com/containous/mux"
+	"github.com/containous/traefik/types"
 )
 
 // Rules holds rule parsing and configuration

server/rules_test.go

@@ -1,11 +1,12 @@
-package main
+package server
 
 import (
-	"github.com/containous/mux"
 	"net/http"
 	"net/url"
 	"reflect"
 	"testing"
+
+	"github.com/containous/mux"
 )
 
 func TestParseOneRule(t *testing.T) {

server/server.go

@@ -1,7 +1,4 @@
-/*
-Copyright
-*/
-package main
+package server
 
 import (
 	"context"

server/web.go

@@ -1,4 +1,4 @@
-package main
+package server
 
 import (
 	"encoding/json"