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Make addition of TopicConfig to globalEventNotifier go-routine safe (#2806)

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master
Krishnan Parthasarathi 8 years ago committed by Harshavardhana
parent f72163f856
commit 5fdd768903
6 changed files with 174 additions and 138 deletions
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  1. 4
      cmd/bucket-handlers.go
  2. 31
      cmd/bucket-notification-handlers.go
  3. 28
      cmd/event-notifier.go
  4. 71
      cmd/event-notifier_test.go
  5. 8
      cmd/object-handlers.go
  6. 2
      cmd/web-handlers.go

4
cmd/bucket-handlers.go
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@ -331,7 +331,6 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
// Write success response.
writeSuccessResponse(w, encodedSuccessResponse)
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify deleted event for objects.
for _, dobj := range deletedObjects {
eventNotify(eventData{
@ -346,7 +345,6 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
})
}
}
}
// PutBucketHandler - PUT Bucket
// ----------
@ -453,7 +451,6 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
// Write successful response.
writeSuccessNoContent(w)
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify object created event.
eventNotify(eventData{
Type: ObjectCreatedPost,
@ -464,7 +461,6 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
},
})
}
}
// HeadBucketHandler - HEAD Bucket
// ----------

31
cmd/bucket-notification-handlers.go
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@ -270,12 +270,8 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
})
}
// Fetch for existing notification configs and update topic configs.
nConfig := globalEventNotifier.GetBucketNotificationConfig(bucket)
if nConfig == nil {
// No notification configs found, initialize.
nConfig = &notificationConfig{
TopicConfigs: []topicConfig{{
// Make topic configuration corresponding to this ListenBucketNotification request.
topicCfg := &topicConfig{
TopicARN: accountARN,
serviceConfig: serviceConfig{
Events: events,
@ -288,29 +284,10 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
},
ID: "sns-" + accountID,
},
}},
}
} else {
// Previously set notification configs found append to
// existing topic configs.
nConfig.TopicConfigs = append(nConfig.TopicConfigs, topicConfig{
TopicARN: accountARN,
serviceConfig: serviceConfig{
Events: events,
Filter: struct {
Key keyFilter `xml:"S3Key,omitempty"`
}{
Key: keyFilter{
FilterRules: filterRules,
},
},
ID: "sns-" + accountID,
},
})
}
// Save bucket notification config.
if err = globalEventNotifier.SetBucketNotificationConfig(bucket, nConfig); err != nil {
// Add topic config to bucket notification config.
if err = globalEventNotifier.AddTopicConfig(bucket, topicCfg); err != nil {
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}

28
cmd/event-notifier.go
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@ -137,17 +137,6 @@ func (en *eventNotifier) RemoveSNSTarget(snsARN string, listenerCh chan []Notifi
}
}
// Returns true if bucket notification is set for the bucket, false otherwise.
func (en *eventNotifier) IsBucketNotificationSet(bucket string) bool {
if en == nil {
return false
}
en.rwMutex.RLock()
defer en.rwMutex.RUnlock()
_, ok := en.notificationConfigs[bucket]
return ok
}
// Fetch bucket notification config for an input bucket.
func (en eventNotifier) GetBucketNotificationConfig(bucket string) *notificationConfig {
en.rwMutex.RLock()
@ -167,6 +156,23 @@ func (en *eventNotifier) SetBucketNotificationConfig(bucket string, notification
return nil
}
func (en *eventNotifier) AddTopicConfig(bucket string, topicCfg *topicConfig) error {
en.rwMutex.Lock()
defer en.rwMutex.Unlock()
if topicCfg == nil {
return errInvalidArgument
}
notificationCfg := en.notificationConfigs[bucket]
if notificationCfg == nil {
en.notificationConfigs[bucket] = &notificationConfig{
TopicConfigs: []topicConfig{*topicCfg},
}
return nil
}
notificationCfg.TopicConfigs = append(notificationCfg.TopicConfigs, *topicCfg)
return nil
}
// eventNotify notifies an event to relevant targets based on their
// bucket notification configs.
func eventNotify(event eventData) {

71
cmd/event-notifier_test.go
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@ -17,6 +17,7 @@
package cmd
import (
"fmt"
"reflect"
"testing"
"time"
@ -64,11 +65,11 @@ func testEventNotify(obj ObjectLayer, instanceType string, t TestErrHandler) {
t.Errorf("Expected error to be nil, got %s", err)
}
if !globalEventNotifier.IsBucketNotificationSet(bucketName) {
nConfig := globalEventNotifier.GetBucketNotificationConfig(bucketName)
if nConfig == nil {
t.Errorf("Notification expected to be set, but notification not set.")
}
nConfig := globalEventNotifier.GetBucketNotificationConfig(bucketName)
if !reflect.DeepEqual(nConfig, &notificationConfig{}) {
t.Errorf("Mismatching notification configs.")
}
@ -381,3 +382,69 @@ func TestListenBucketNotification(t *testing.T) {
break
}
}
func testAddTopicConfig(obj ObjectLayer, instanceType string, t TestErrHandler) {
root, cErr := newTestConfig("us-east-1")
if cErr != nil {
t.Fatalf("[%s] Failed to initialize test config: %v", instanceType, cErr)
}
defer removeAll(root)
if err := initEventNotifier(obj); err != nil {
t.Fatalf("[%s] : Failed to initialize event notifier: %v", instanceType, err)
}
// Make a bucket to store topicConfigs.
randBucket := getRandomBucketName()
if err := obj.MakeBucket(randBucket); err != nil {
t.Fatalf("[%s] : Failed to make bucket %s", instanceType, randBucket)
}
// Add a topicConfig to an empty notificationConfig.
accountID := fmt.Sprintf("%d", time.Now().UTC().UnixNano())
accountARN := "arn:minio:sns:" + serverConfig.GetRegion() + accountID + ":listen"
var filterRules []filterRule
filterRules = append(filterRules, filterRule{
Name: "prefix",
Value: "minio",
})
filterRules = append(filterRules, filterRule{
Name: "suffix",
Value: "*.jpg",
})
// Make topic configuration corresponding to this ListenBucketNotification request.
sampleTopicCfg := &topicConfig{
TopicARN: accountARN,
serviceConfig: serviceConfig{
Filter: struct {
Key keyFilter `xml:"S3Key,omitempty"`
}{
Key: keyFilter{
FilterRules: filterRules,
},
},
ID: "sns-" + accountID,
},
}
testCases := []struct {
topicCfg *topicConfig
expectedErr error
}{
{sampleTopicCfg, nil},
{nil, errInvalidArgument},
{sampleTopicCfg, nil},
}
for i, test := range testCases {
err := globalEventNotifier.AddTopicConfig(randBucket, test.topicCfg)
if err != test.expectedErr {
t.Errorf("Test %d: %s failed with error %v, expected to fail with %v",
i+1, instanceType, err, test.expectedErr)
}
}
}
func TestAddTopicConfig(t *testing.T) {
ExecObjectLayerTest(t, testAddTopicConfig)
}

8
cmd/object-handlers.go
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@ -378,7 +378,6 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify object created event.
eventNotify(eventData{
Type: ObjectCreatedCopy,
@ -389,7 +388,6 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
},
})
}
}
// PutObjectHandler - PUT Object
// ----------
@ -482,7 +480,6 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
w.Header().Set("ETag", "\""+objInfo.MD5Sum+"\"")
writeSuccessResponse(w, nil)
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify object created event.
eventNotify(eventData{
Type: ObjectCreatedPut,
@ -493,7 +490,6 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
},
})
}
}
/// Multipart objectAPIHandlers
@ -834,7 +830,6 @@ func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWrite
w.Write(encodedSuccessResponse)
w.(http.Flusher).Flush()
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Fetch object info for notifications.
objInfo, err := objectAPI.GetObjectInfo(bucket, object)
if err != nil {
@ -852,7 +847,6 @@ func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWrite
},
})
}
}
/// Delete objectAPIHandlers
@ -895,7 +889,6 @@ func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.
}
writeSuccessNoContent(w)
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify object deleted event.
eventNotify(eventData{
Type: ObjectRemovedDelete,
@ -908,4 +901,3 @@ func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.
},
})
}
}

2
cmd/web-handlers.go
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@ -428,7 +428,6 @@ func (web *webAPIHandlers) Upload(w http.ResponseWriter, r *http.Request) {
return
}
if globalEventNotifier.IsBucketNotificationSet(bucket) {
// Notify object created event.
eventNotify(eventData{
Type: ObjectCreatedPut,
@ -439,7 +438,6 @@ func (web *webAPIHandlers) Upload(w http.ResponseWriter, r *http.Request) {
},
})
}
}
// Download - file download handler.
func (web *webAPIHandlers) Download(w http.ResponseWriter, r *http.Request) {

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