parallel tests (#7629)

5 files changed, 193 insertions, 28 deletions

diff --git a/app/app.go b/app/app.go
index 7b6499b1f..34c0721a0 100644
--- a/app/app.go
+++ b/app/app.go
@@ -47,7 +47,8 @@ type App struct {
 	Mfa              einterfaces.MfaInterface
 	Saml             einterfaces.SamlInterface
 
-	newStore func() store.Store
+	newStore       func() store.Store
+	configOverride func(*model.Config) *model.Config
 }
 
 var appCount = 0
@@ -77,7 +78,7 @@ func New(options ...Option) *App {
 
 	if app.newStore == nil {
 		app.newStore = func() store.Store {
-			return store.NewLayeredStore(sqlstore.NewSqlSupplier(utils.Cfg.SqlSettings, app.Metrics), app.Metrics, app.Cluster)
+			return store.NewLayeredStore(sqlstore.NewSqlSupplier(app.Config().SqlSettings, app.Metrics), app.Metrics, app.Cluster)
 		}
 	}
 
@@ -233,6 +234,9 @@ func (a *App) initEnterprise() {
 }
 
 func (a *App) Config() *model.Config {
+	if a.configOverride != nil {
+		return a.configOverride(utils.Cfg)
+	}
 	return utils.Cfg
 }
 
diff --git a/app/app_test.go b/app/app_test.go
new file mode 100644
index 000000000..00d08fb14
--- /dev/null
+++ b/app/app_test.go
@@ -0,0 +1,48 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	"flag"
+	"os"
+	"testing"
+
+	l4g "github.com/alecthomas/log4go"
+
+	"github.com/mattermost/mattermost-server/store/storetest"
+	"github.com/mattermost/mattermost-server/utils"
+)
+
+func TestMain(m *testing.M) {
+	flag.Parse()
+
+	// In the case where a dev just wants to run a single test, it's faster to just use the default
+	// store.
+	if filter := flag.Lookup("test.run").Value.String(); filter != "" && filter != "." {
+		utils.TranslationsPreInit()
+		utils.LoadConfig("config.json")
+		l4g.Info("-test.run used, not creating temporary containers")
+		os.Exit(m.Run())
+	}
+
+	utils.TranslationsPreInit()
+	utils.LoadConfig("config.json")
+	utils.InitTranslations(utils.Cfg.LocalizationSettings)
+
+	status := 0
+
+	container, settings, err := storetest.NewMySQLContainer()
+	if err != nil {
+		panic(err)
+	}
+
+	UseTestStore(container, settings)
+
+	defer func() {
+		StopTestStore()
+		os.Exit(status)
+	}()
+
+	status = m.Run()
+}
diff --git a/app/apptestlib.go b/app/apptestlib.go
index 09bf02d39..9c26e0bbb 100644
--- a/app/apptestlib.go
+++ b/app/apptestlib.go
@@ -7,6 +7,9 @@ import (
 	"time"
 
 	"github.com/mattermost/mattermost-server/model"
+	"github.com/mattermost/mattermost-server/store"
+	"github.com/mattermost/mattermost-server/store/sqlstore"
+	"github.com/mattermost/mattermost-server/store/storetest"
 	"github.com/mattermost/mattermost-server/utils"
 
 	l4g "github.com/alecthomas/log4go"
@@ -21,13 +24,47 @@ type TestHelper struct {
 	BasicPost    *model.Post
 }
 
+type persistentTestStore struct {
+	store.Store
+}
+
+func (*persistentTestStore) Close() {}
+
+var testStoreContainer *storetest.RunningContainer
+var testStore *persistentTestStore
+
+// UseTestStore sets the container and corresponding settings to use for tests. Once the tests are
+// complete (e.g. at the end of your TestMain implementation), you should call StopTestStore.
+func UseTestStore(container *storetest.RunningContainer, settings *model.SqlSettings) {
+	testStoreContainer = container
+	testStore = &persistentTestStore{store.NewLayeredStore(sqlstore.NewSqlSupplier(*settings, nil), nil, nil)}
+}
+
+func StopTestStore() {
+	if testStoreContainer != nil {
+		testStoreContainer.Stop()
+		testStoreContainer = nil
+	}
+}
+
 func setupTestHelper(enterprise bool) *TestHelper {
-	utils.TranslationsPreInit()
+	if utils.T == nil {
+		utils.TranslationsPreInit()
+	}
 	utils.LoadConfig("config.json")
 	utils.InitTranslations(utils.Cfg.LocalizationSettings)
 
+	var options []Option
+	if testStore != nil {
+		options = append(options, StoreOverride(testStore))
+		options = append(options, ConfigOverride(func(cfg *model.Config) {
+			cfg.ServiceSettings.ListenAddress = new(string)
+			*cfg.ServiceSettings.ListenAddress = ":0"
+		}))
+	}
+
 	th := &TestHelper{
-		App: New(),
+		App: New(options...),
 	}
 
 	*utils.Cfg.TeamSettings.MaxUsersPerTeam = 50
@@ -188,4 +225,8 @@ func (me *TestHelper) LinkUserToTeam(user *model.User, team *model.Team) {
 
 func (me *TestHelper) TearDown() {
 	me.App.Shutdown()
+	if err := recover(); err != nil {
+		StopTestStore()
+		panic(err)
+	}
 }
diff --git a/app/options.go b/app/options.go
index e5ac85706..121bbbf80 100644
--- a/app/options.go
+++ b/app/options.go
@@ -4,25 +4,53 @@
 package app
 
 import (
+	"github.com/mattermost/mattermost-server/model"
 	"github.com/mattermost/mattermost-server/store"
 )
 
 type Option func(a *App)
 
+// By default, the app will use a global configuration file. This allows you to override all or part
+// of that configuration.
+//
+// The override parameter must be a *model.Config, func(*model.Config), or func(*model.Config) *model.Config.
+//
+// XXX: Most code will not respect this at the moment. (We need to eliminate utils.Cfg first.)
+func ConfigOverride(override interface{}) Option {
+	return func(a *App) {
+		switch o := override.(type) {
+		case *model.Config:
+			a.configOverride = func(*model.Config) *model.Config {
+				return o
+			}
+		case func(*model.Config):
+			a.configOverride = func(cfg *model.Config) *model.Config {
+				ret := *cfg
+				o(&ret)
+				return &ret
+			}
+		case func(*model.Config) *model.Config:
+			a.configOverride = o
+		default:
+			panic("invalid ConfigOverride")
+		}
+	}
+}
+
 // By default, the app will use the store specified by the configuration. This allows you to
 // construct an app with a different store.
 //
-// The storeOrFactory parameter must be either a store.Store or func(App) store.Store.
-func StoreOverride(storeOrFactory interface{}) Option {
+// The override parameter must be either a store.Store or func(App) store.Store.
+func StoreOverride(override interface{}) Option {
 	return func(a *App) {
-		switch s := storeOrFactory.(type) {
+		switch o := override.(type) {
 		case store.Store:
 			a.newStore = func() store.Store {
-				return s
+				return o
 			}
 		case func(*App) store.Store:
 			a.newStore = func() store.Store {
-				return s(a)
+				return o(a)
 			}
 		default:
 			panic("invalid StoreOverride")
diff --git a/app/server.go b/app/server.go
index c509d0440..08772dce4 100644
--- a/app/server.go
+++ b/app/server.go
@@ -4,6 +4,7 @@
 package app
 
 import (
+	"context"
 	"crypto/tls"
 	"io"
 	"io/ioutil"
@@ -16,7 +17,6 @@ import (
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
 	"github.com/rsc/letsencrypt"
-	"github.com/tylerb/graceful"
 	"gopkg.in/throttled/throttled.v2"
 	"gopkg.in/throttled/throttled.v2/store/memstore"
 
@@ -29,7 +29,8 @@ type Server struct {
 	Store           store.Store
 	WebSocketRouter *WebSocketRouter
 	Router          *mux.Router
-	GracefulServer  *graceful.Server
+	Server          *http.Server
+	ListenAddr      *net.TCPAddr
 }
 
 var allowedMethods []string = []string{
@@ -152,16 +153,29 @@ func (a *App) StartServer() {
 		handler = httpRateLimiter.RateLimit(handler)
 	}
 
-	a.Srv.GracefulServer = &graceful.Server{
-		Timeout: TIME_TO_WAIT_FOR_CONNECTIONS_TO_CLOSE_ON_SERVER_SHUTDOWN,
-		Server: &http.Server{
-			Addr:         *utils.Cfg.ServiceSettings.ListenAddress,
-			Handler:      handlers.RecoveryHandler(handlers.RecoveryLogger(&RecoveryLogger{}), handlers.PrintRecoveryStack(true))(handler),
-			ReadTimeout:  time.Duration(*utils.Cfg.ServiceSettings.ReadTimeout) * time.Second,
-			WriteTimeout: time.Duration(*utils.Cfg.ServiceSettings.WriteTimeout) * time.Second,
-		},
+	a.Srv.Server = &http.Server{
+		Handler:      handlers.RecoveryHandler(handlers.RecoveryLogger(&RecoveryLogger{}), handlers.PrintRecoveryStack(true))(handler),
+		ReadTimeout:  time.Duration(*utils.Cfg.ServiceSettings.ReadTimeout) * time.Second,
+		WriteTimeout: time.Duration(*utils.Cfg.ServiceSettings.WriteTimeout) * time.Second,
 	}
-	l4g.Info(utils.T("api.server.start_server.listening.info"), *utils.Cfg.ServiceSettings.ListenAddress)
+
+	addr := *a.Config().ServiceSettings.ListenAddress
+	if addr == "" {
+		if *utils.Cfg.ServiceSettings.ConnectionSecurity == model.CONN_SECURITY_TLS {
+			addr = ":https"
+		} else {
+			addr = ":http"
+		}
+	}
+
+	listener, err := net.Listen("tcp", addr)
+	if err != nil {
+		l4g.Critical(utils.T("api.server.start_server.starting.critical"), err)
+		return
+	}
+	a.Srv.ListenAddr = listener.Addr().(*net.TCPAddr)
+
+	l4g.Info(utils.T("api.server.start_server.listening.info"), listener.Addr().String())
 
 	if *utils.Cfg.ServiceSettings.Forward80To443 {
 		go func() {
@@ -189,25 +203,55 @@ func (a *App) StartServer() {
 
 				tlsConfig.NextProtos = append(tlsConfig.NextProtos, "h2")
 
-				err = a.Srv.GracefulServer.ListenAndServeTLSConfig(tlsConfig)
+				a.Srv.Server.TLSConfig = tlsConfig
+				err = a.Srv.Server.ServeTLS(listener, "", "")
 			} else {
-				err = a.Srv.GracefulServer.ListenAndServeTLS(*utils.Cfg.ServiceSettings.TLSCertFile, *utils.Cfg.ServiceSettings.TLSKeyFile)
+				err = a.Srv.Server.ServeTLS(listener, *utils.Cfg.ServiceSettings.TLSCertFile, *utils.Cfg.ServiceSettings.TLSKeyFile)
 			}
 		} else {
-			err = a.Srv.GracefulServer.ListenAndServe()
+			err = a.Srv.Server.Serve(listener)
 		}
-		if err != nil {
+		if err != nil && err != http.ErrServerClosed {
 			l4g.Critical(utils.T("api.server.start_server.starting.critical"), err)
 			time.Sleep(time.Second)
 		}
 	}()
 }
 
+type tcpKeepAliveListener struct {
+	*net.TCPListener
+}
+
+func (ln tcpKeepAliveListener) Accept() (c net.Conn, err error) {
+	tc, err := ln.AcceptTCP()
+	if err != nil {
+		return
+	}
+	tc.SetKeepAlive(true)
+	tc.SetKeepAlivePeriod(3 * time.Minute)
+	return tc, nil
+}
+
+func (a *App) Listen(addr string) (net.Listener, error) {
+	if addr == "" {
+		addr = ":http"
+	}
+	ln, err := net.Listen("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+	return tcpKeepAliveListener{ln.(*net.TCPListener)}, nil
+}
+
 func (a *App) StopServer() {
-	if a.Srv.GracefulServer != nil {
-		a.Srv.GracefulServer.Stop(TIME_TO_WAIT_FOR_CONNECTIONS_TO_CLOSE_ON_SERVER_SHUTDOWN)
-		<-a.Srv.GracefulServer.StopChan()
-		a.Srv.GracefulServer = nil
+	if a.Srv.Server != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), TIME_TO_WAIT_FOR_CONNECTIONS_TO_CLOSE_ON_SERVER_SHUTDOWN)
+		defer cancel()
+		if err := a.Srv.Server.Shutdown(ctx); err != nil {
+			l4g.Warn(err.Error())
+		}
+		a.Srv.Server.Close()
+		a.Srv.Server = nil
 	}
 }