*: restructure package tree

This commit packages up individual modules and removes the top-level
main package.

.promu.yml

@@ -2,6 +2,9 @@ go: 1.6.2
 repository:
     path: github.com/prometheus/alertmanager
 build:
+    binaries:
+        - name: alertmanager
+          path: ./cmd/alertmanager
     flags: -a -tags netgo
     ldflags: |
         -X {{repoPath}}/vendor/github.com/prometheus/common/version.Version={{.Version}}

api/api.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package api
 
 import (
 	"encoding/json"
@@ -28,6 +28,7 @@ import (
 	"github.com/satori/go.uuid"
 	"golang.org/x/net/context"
 
+	"github.com/prometheus/alertmanager/dispatch"
 	"github.com/prometheus/alertmanager/provider"
 	"github.com/prometheus/alertmanager/types"
 )
@@ -59,15 +60,15 @@ type API struct {
 	resolveTimeout time.Duration
 	uptime         time.Time
 
-	groups func() AlertOverview
+	groups func() dispatch.AlertOverview
 
 	// context is an indirection for testing.
 	context func(r *http.Request) context.Context
 	mtx     sync.RWMutex
 }
 
-// NewAPI returns a new API.
-func NewAPI(alerts provider.Alerts, silences provider.Silences, gf func() AlertOverview) *API {
+// New returns a new API.
+func New(alerts provider.Alerts, silences provider.Silences, gf func() dispatch.AlertOverview) *API {
 	return &API{
 		context:  route.Context,
 		alerts:   alerts,

cmd/alertmanager/main.go

@@ -38,12 +38,16 @@ import (
 	"github.com/prometheus/common/version"
 	"github.com/weaveworks/mesh"
 
+	"github.com/prometheus/alertmanager/api"
 	"github.com/prometheus/alertmanager/config"
+	"github.com/prometheus/alertmanager/dispatch"
+	"github.com/prometheus/alertmanager/inhibit"
 	"github.com/prometheus/alertmanager/notify"
 	"github.com/prometheus/alertmanager/provider/mem"
 	meshprov "github.com/prometheus/alertmanager/provider/mesh"
 	"github.com/prometheus/alertmanager/template"
 	"github.com/prometheus/alertmanager/types"
+	"github.com/prometheus/alertmanager/ui"
 )
 
 var (
@@ -144,13 +148,13 @@ func main() {
 	defer alerts.Close()
 
 	var (
-		inhibitor *Inhibitor
+		inhibitor *inhibit.Inhibitor
 		tmpl      *template.Template
-		disp      *Dispatcher
+		disp      *dispatch.Dispatcher
 	)
 	defer disp.Stop()
 
-	api := NewAPI(alerts, silences, func() AlertOverview {
+	apiv := api.New(alerts, silences, func() dispatch.AlertOverview {
 		return disp.Groups()
 	})
 
@@ -205,7 +209,7 @@ func main() {
 			return err
 		}
 
-		api.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))
+		apiv.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))
 
 		tmpl, err = template.FromGlobs(conf.Templates...)
 		if err != nil {
@@ -216,8 +220,8 @@ func main() {
 		inhibitor.Stop()
 		disp.Stop()
 
-		inhibitor = NewInhibitor(alerts, conf.InhibitRules, marker)
-		disp = NewDispatcher(alerts, NewRoute(conf.Route, nil), build(conf.Receivers), marker)
+		inhibitor = inhibit.NewInhibitor(alerts, conf.InhibitRules, marker)
+		disp = dispatch.NewDispatcher(alerts, dispatch.NewRoute(conf.Route, nil), build(conf.Receivers), marker)
 
 		go disp.Run()
 		go inhibitor.Run()
@@ -232,8 +236,8 @@ func main() {
 	router := route.New()
 
 	webReload := make(chan struct{})
-	RegisterWeb(router.WithPrefix(amURL.Path), webReload)
-	api.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))
+	ui.Register(router.WithPrefix(amURL.Path), webReload)
+	apiv.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))
 
 	log.Infoln("Listening on", *listenAddress)
 	go listen(*listenAddress, router)

dispatch/dispatch.go

@@ -1,4 +1,4 @@
-package main
+package dispatch
 
 import (
 	"fmt"

dispatch/dispatch_test.go

@@ -1,4 +1,4 @@
-package main
+package dispatch
 
 import (
 	"reflect"

dispatch/route.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package dispatch
 
 import (
 	"encoding/json"

dispatch/route_test.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package dispatch
 
 import (
 	"reflect"

inhibit/inhibit.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package inhibit
 
 import (
 	"sync"

inhibit/inhibit_test.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package inhibit
 
 import (
 	"reflect"

ui/web.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package ui
 
 import (
 	"bytes"
@@ -23,18 +23,16 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/log"
 	"github.com/prometheus/common/route"
-
-	"github.com/prometheus/alertmanager/ui"
 )
 
 func serveAsset(w http.ResponseWriter, req *http.Request, fp string) {
-	info, err := ui.AssetInfo(fp)
+	info, err := AssetInfo(fp)
 	if err != nil {
 		log.Warn("Could not get file: ", err)
 		w.WriteHeader(http.StatusNotFound)
 		return
 	}
-	file, err := ui.Asset(fp)
+	file, err := Asset(fp)
 	if err != nil {
 		if err != io.EOF {
 			log.With("file", fp).Warn("Could not get file: ", err)
@@ -46,8 +44,8 @@ func serveAsset(w http.ResponseWriter, req *http.Request, fp string) {
 	http.ServeContent(w, req, info.Name(), info.ModTime(), bytes.NewReader(file))
 }
 
-// RegisterWeb registers handlers to serve files for the web interface.
-func RegisterWeb(r *route.Router, reloadCh chan<- struct{}) {
+// Register registers handlers to serve files for the web interface.
+func Register(r *route.Router, reloadCh chan<- struct{}) {
 	ihf := prometheus.InstrumentHandlerFunc
 
 	r.Get("/app/*filepath", ihf("app_files",