Fix race in test helpers. Fixes #8177

CHANGELOG.md

@@ -30,6 +30,7 @@
 - [#8167](https://github.com/influxdata/influxdb/issues/8167): Fix a regression when math was used with selectors.
 - [#8175](https://github.com/influxdata/influxdb/issues/8175): Ensure the input for certain functions in the query engine are ordered.
 - [#8171](https://github.com/influxdata/influxdb/issues/8171): Significantly improve shutdown speed for high cardinality databases.
+- [#8177](https://github.com/influxdata/influxdb/issues/8177): Fix racy integration test.
 
 ## v1.2.2 [2017-03-14]
 

tests/server_helpers.go

@@ -12,6 +12,7 @@ import (
 	"os"
 	"regexp"
 	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -43,13 +44,6 @@ type Server interface {
 	WritePoints(database, retentionPolicy string, consistencyLevel models.ConsistencyLevel, points []models.Point) error
 }
 
-// LocalServer is a Server that is running in-process and can be accessed directly
-type LocalServer struct {
-	*client
-	*run.Server
-	Config *run.Config
-}
-
 // RemoteServer is a Server that is accessed remotely via the HTTP API
 type RemoteServer struct {
 	*client
@@ -247,8 +241,20 @@ func OpenDefaultServer(c *run.Config) Server {
 	return s
 }
 
+// LocalServer is a Server that is running in-process and can be accessed directly
+type LocalServer struct {
+	mu sync.RWMutex
+	*run.Server
+
+	*client
+	Config *run.Config
+}
+
 // Close shuts down the server and removes all temporary paths.
 func (s *LocalServer) Close() {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
 	if err := s.Server.Close(); err != nil {
 		panic(err.Error())
 	}
@@ -264,11 +270,15 @@ func (s *LocalServer) Close() {
 }
 
 func (s *LocalServer) Closed() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return s.Server == nil
 }
 
 // URL returns the base URL for the httpd endpoint.
 func (s *LocalServer) URL() string {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	for _, service := range s.Services {
 		if service, ok := service.(*httpd.Service); ok {
 			return "http://" + service.Addr().String()
@@ -278,11 +288,15 @@ func (s *LocalServer) URL() string {
 }
 
 func (s *LocalServer) CreateDatabase(db string) (*meta.DatabaseInfo, error) {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return s.MetaClient.CreateDatabase(db)
 }
 
 // CreateDatabaseAndRetentionPolicy will create the database and retention policy.
 func (s *LocalServer) CreateDatabaseAndRetentionPolicy(db string, rp *meta.RetentionPolicySpec, makeDefault bool) error {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	if _, err := s.MetaClient.CreateDatabase(db); err != nil {
 		return err
 	} else if _, err := s.MetaClient.CreateRetentionPolicy(db, rp, makeDefault); err != nil {
@@ -292,14 +306,20 @@ func (s *LocalServer) CreateDatabaseAndRetentionPolicy(db string, rp *meta.Reten
 }
 
 func (s *LocalServer) CreateSubscription(database, rp, name, mode string, destinations []string) error {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return s.MetaClient.CreateSubscription(database, rp, name, mode, destinations)
 }
 
 func (s *LocalServer) DropDatabase(db string) error {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return s.MetaClient.DropDatabase(db)
 }
 
 func (s *LocalServer) Reset() error {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	for _, db := range s.MetaClient.Databases() {
 		if err := s.DropDatabase(db.Name); err != nil {
 			return err
@@ -308,6 +328,12 @@ func (s *LocalServer) Reset() error {
 	return nil
 }
 
+func (s *LocalServer) WritePoints(database, retentionPolicy string, consistencyLevel models.ConsistencyLevel, points []models.Point) error {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.PointsWriter.WritePoints(database, retentionPolicy, consistencyLevel, points)
+}
+
 // client abstract querying and writing to a Server using HTTP
 type client struct {
 	URLFn func() string
@@ -410,10 +436,6 @@ func (wr WriteError) Error() string {
 	return fmt.Sprintf("invalid status code: code=%d, body=%s", wr.statusCode, wr.body)
 }
 
-func (s *LocalServer) WritePoints(database, retentionPolicy string, consistencyLevel models.ConsistencyLevel, points []models.Point) error {
-	return s.PointsWriter.WritePoints(database, retentionPolicy, consistencyLevel, points)
-}
-
 // Write executes a write against the server and returns the results.
 func (s *client) Write(db, rp, body string, params url.Values) (results string, err error) {
 	if params == nil {

tests/server_test.go

@@ -7723,7 +7723,6 @@ func TestServer_ConcurrentPointsWriter_Subscriber(t *testing.T) {
 	time.Sleep(10 * time.Millisecond)
 
 	close(done)
-	// Race occurs on s.Close()
 }
 
 // Ensure time in where clause is inclusive