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841 lines
24 KiB
841 lines
24 KiB
/*
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* Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bytes"
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"encoding/json"
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"encoding/xml"
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"fmt"
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"net"
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"net/url"
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"path"
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"sync"
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"github.com/Sirupsen/logrus"
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"github.com/minio/minio/pkg/hash"
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)
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const (
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minioEventSource = "minio:s3"
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)
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type externalNotifier struct {
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// Per-bucket notification config. This is updated via
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// PutBucketNotification API.
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notificationConfigs map[string]*notificationConfig
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// An external target keeps a connection to an external
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// service to which events are to be sent. It is a mapping
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// from an ARN to a log object
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targets map[string]*logrus.Logger
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rwMutex *sync.RWMutex
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}
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type internalNotifier struct {
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// per-bucket listener configuration. This is updated
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// when listeners connect or disconnect.
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listenerConfigs map[string][]listenerConfig
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// An internal target is a peer Minio server, that is
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// connected to a listening client. Here, targets is a map of
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// listener ARN to log object.
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targets map[string]*listenerLogger
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// Connected listeners is a map of listener ARNs to channels
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// on which the ListenBucket API handler go routine is waiting
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// for events to send to a client.
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connectedListeners map[string]chan []NotificationEvent
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rwMutex *sync.RWMutex
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}
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// Global event notification configuration. This structure has state
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// about configured external notifications, and run-time configuration
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// for listener notifications.
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type eventNotifier struct {
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// `external` here refers to notification configuration to
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// send events to supported external systems
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external externalNotifier
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// `internal` refers to notification configuration for live
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// listening clients. Events for a client are send from all
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// servers, internally to a particular server that is
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// connected to the client.
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internal internalNotifier
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}
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// Represents data to be sent with notification event.
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type eventData struct {
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Type EventName
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Bucket string
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ObjInfo ObjectInfo
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ReqParams map[string]string
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Host string
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Port string
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UserAgent string
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}
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// New notification event constructs a new notification event message from
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// input request metadata which completed successfully.
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func newNotificationEvent(event eventData) NotificationEvent {
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getResponseOriginEndpointKey := func() string {
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host := globalMinioHost
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if host == "" {
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// FIXME: Send FQDN or hostname of this machine than sending IP address.
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host = localIP4.ToSlice()[0]
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}
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return fmt.Sprintf("%s://%s:%s", getURLScheme(globalIsSSL), host, globalMinioPort)
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}
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// Fetch the region.
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region := serverConfig.GetRegion()
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// Fetch the credentials.
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creds := serverConfig.GetCredential()
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// Time when Minio finished processing the request.
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eventTime := UTCNow()
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// Fetch a hexadecimal representation of event time in nano seconds.
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uniqueID := mustGetRequestID(eventTime)
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/// Construct a new object created event.
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// Following blocks fills in all the necessary details of s3
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// event message structure.
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// http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
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nEvent := NotificationEvent{
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EventVersion: eventVersion,
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EventSource: minioEventSource,
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AwsRegion: region,
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EventTime: eventTime.Format(timeFormatAMZ),
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EventName: event.Type.String(),
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UserIdentity: identity{creds.AccessKey},
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RequestParameters: event.ReqParams,
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ResponseElements: map[string]string{
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responseRequestIDKey: uniqueID,
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// Following is a custom response element to indicate
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// event origin server endpoint.
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responseOriginEndpointKey: getResponseOriginEndpointKey(),
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},
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S3: eventMeta{
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SchemaVersion: eventSchemaVersion,
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ConfigurationID: eventConfigID,
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Bucket: bucketMeta{
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Name: event.Bucket,
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OwnerIdentity: identity{creds.AccessKey},
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ARN: bucketARNPrefix + event.Bucket,
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},
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},
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Source: sourceInfo{
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Host: event.Host,
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Port: event.Port,
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UserAgent: event.UserAgent,
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},
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}
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// Escape the object name. For example "red flower.jpg" becomes "red+flower.jpg".
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escapedObj := url.QueryEscape(event.ObjInfo.Name)
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// For delete object event type, we do not need to set ETag and Size.
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if event.Type == ObjectRemovedDelete {
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nEvent.S3.Object = objectMeta{
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Key: escapedObj,
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VersionID: "1",
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Sequencer: uniqueID,
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}
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return nEvent
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}
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// For all other events we should set ETag and Size.
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nEvent.S3.Object = objectMeta{
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Key: escapedObj,
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ETag: event.ObjInfo.ETag,
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Size: event.ObjInfo.Size,
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ContentType: event.ObjInfo.ContentType,
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UserDefined: event.ObjInfo.UserDefined,
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VersionID: "1",
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Sequencer: uniqueID,
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}
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// Success.
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return nEvent
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}
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// Fetch all external targets. This returns a copy of the current map of
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// external notification targets.
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func (en eventNotifier) GetAllExternalTargets() map[string]*logrus.Logger {
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en.external.rwMutex.RLock()
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defer en.external.rwMutex.RUnlock()
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targetsCopy := make(map[string]*logrus.Logger)
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for k, v := range en.external.targets {
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targetsCopy[k] = v
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}
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return targetsCopy
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}
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// Fetch the external target.
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func (en eventNotifier) GetExternalTarget(queueARN string) *logrus.Logger {
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en.external.rwMutex.RLock()
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defer en.external.rwMutex.RUnlock()
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return en.external.targets[queueARN]
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}
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func (en eventNotifier) GetInternalTarget(arn string) *listenerLogger {
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en.internal.rwMutex.RLock()
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defer en.internal.rwMutex.RUnlock()
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return en.internal.targets[arn]
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}
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// Set a new sns target for an input sns ARN.
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func (en *eventNotifier) AddListenerChan(snsARN string, listenerCh chan []NotificationEvent) error {
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if listenerCh == nil {
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return errInvalidArgument
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}
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en.internal.rwMutex.Lock()
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defer en.internal.rwMutex.Unlock()
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en.internal.connectedListeners[snsARN] = listenerCh
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return nil
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}
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// Remove sns target for an input sns ARN.
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func (en *eventNotifier) RemoveListenerChan(snsARN string) {
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en.internal.rwMutex.Lock()
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defer en.internal.rwMutex.Unlock()
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if en.internal.connectedListeners != nil {
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delete(en.internal.connectedListeners, snsARN)
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}
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}
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func (en *eventNotifier) SendListenerEvent(arn string, event []NotificationEvent) error {
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en.internal.rwMutex.Lock()
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defer en.internal.rwMutex.Unlock()
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ch, ok := en.internal.connectedListeners[arn]
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if ok {
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ch <- event
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}
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// If the channel is not present we ignore the event.
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return nil
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}
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// Fetch bucket notification config for an input bucket.
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func (en eventNotifier) GetBucketNotificationConfig(bucket string) *notificationConfig {
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en.external.rwMutex.RLock()
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defer en.external.rwMutex.RUnlock()
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return en.external.notificationConfigs[bucket]
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}
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func (en *eventNotifier) SetBucketNotificationConfig(bucket string, ncfg *notificationConfig) {
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en.external.rwMutex.Lock()
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if ncfg == nil {
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delete(en.external.notificationConfigs, bucket)
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} else {
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en.external.notificationConfigs[bucket] = ncfg
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}
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en.external.rwMutex.Unlock()
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}
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func (en *eventNotifier) GetBucketListenerConfig(bucket string) []listenerConfig {
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en.internal.rwMutex.RLock()
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defer en.internal.rwMutex.RUnlock()
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return en.internal.listenerConfigs[bucket]
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}
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func (en *eventNotifier) SetBucketListenerConfig(bucket string, lcfg []listenerConfig) error {
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en.internal.rwMutex.Lock()
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defer en.internal.rwMutex.Unlock()
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if len(lcfg) == 0 {
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delete(en.internal.listenerConfigs, bucket)
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} else {
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en.internal.listenerConfigs[bucket] = lcfg
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}
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for _, elcArr := range en.internal.listenerConfigs {
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for _, elcElem := range elcArr {
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currArn := elcElem.TopicConfig.TopicARN
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logger, err := newListenerLogger(currArn, elcElem.TargetServer)
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if err != nil {
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return err
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}
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en.internal.targets[currArn] = logger
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}
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}
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return nil
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}
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func eventNotifyForBucketNotifications(eventType, objectName, bucketName string, nEvent []NotificationEvent) {
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nConfig := globalEventNotifier.GetBucketNotificationConfig(bucketName)
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if nConfig == nil {
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return
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}
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// Validate if the event and object match the queue configs.
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for _, qConfig := range nConfig.QueueConfigs {
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eventMatch := eventMatch(eventType, qConfig.Events)
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ruleMatch := filterRuleMatch(objectName, qConfig.Filter.Key.FilterRules)
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if eventMatch && ruleMatch {
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targetLog := globalEventNotifier.GetExternalTarget(qConfig.QueueARN)
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if targetLog != nil {
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targetLog.WithFields(logrus.Fields{
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"Key": path.Join(bucketName, objectName),
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"EventType": eventType,
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"Records": nEvent,
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}).Info()
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}
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}
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}
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}
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func eventNotifyForBucketListeners(eventType, objectName, bucketName string,
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nEvent []NotificationEvent) {
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lCfgs := globalEventNotifier.GetBucketListenerConfig(bucketName)
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if lCfgs == nil {
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return
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}
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// Validate if the event and object match listener configs
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for _, lcfg := range lCfgs {
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ruleMatch := filterRuleMatch(objectName, lcfg.TopicConfig.Filter.Key.FilterRules)
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eventMatch := eventMatch(eventType, lcfg.TopicConfig.Events)
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if eventMatch && ruleMatch {
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targetLog := globalEventNotifier.GetInternalTarget(
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lcfg.TopicConfig.TopicARN)
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if targetLog != nil && targetLog.log != nil {
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targetLog.log.WithFields(logrus.Fields{
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"Key": path.Join(bucketName, objectName),
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"EventType": eventType,
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"Records": nEvent,
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}).Info()
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}
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}
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}
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}
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// eventNotify notifies an event to relevant targets based on their
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// bucket configuration (notifications and listeners).
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func eventNotify(event eventData) {
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if globalEventNotifier == nil {
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return
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}
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// Notifies a new event.
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// List of events reported through this function are
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// - s3:ObjectCreated:Put
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// - s3:ObjectCreated:Post
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// - s3:ObjectCreated:Copy
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// - s3:ObjectCreated:CompleteMultipartUpload
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// - s3:ObjectRemoved:Delete
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// Event type.
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eventType := event.Type.String()
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// Object name.
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objectName := event.ObjInfo.Name
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// Save the notification event to be sent.
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notificationEvent := []NotificationEvent{newNotificationEvent(event)}
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// Notify external targets.
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eventNotifyForBucketNotifications(eventType, objectName, event.Bucket, notificationEvent)
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// Notify internal targets.
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eventNotifyForBucketListeners(eventType, objectName, event.Bucket, notificationEvent)
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}
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// loads notification config if any for a given bucket, returns
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// structured notification config.
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func loadNotificationConfig(bucket string, objAPI ObjectLayer) (*notificationConfig, error) {
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// Construct the notification config path.
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ncPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
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// Acquire a write lock on notification config before modifying.
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objLock := globalNSMutex.NewNSLock(minioMetaBucket, ncPath)
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if err := objLock.GetRLock(globalOperationTimeout); err != nil {
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return nil, err
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}
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defer objLock.RUnlock()
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var buffer bytes.Buffer
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err := objAPI.GetObject(minioMetaBucket, ncPath, 0, -1, &buffer) // Read everything.
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if err != nil {
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// 'notification.xml' not found return
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// 'errNoSuchNotifications'. This is default when no
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// bucket notifications are found on the bucket.
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if isErrObjectNotFound(err) || isErrIncompleteBody(err) {
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return nil, traceError(errNoSuchNotifications)
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}
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errorIf(err, "Unable to load bucket-notification for bucket %s", bucket)
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// Returns error for other errors.
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return nil, err
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}
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// if `notifications.xml` is empty we should return NoSuchNotifications.
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if buffer.Len() == 0 {
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return nil, traceError(errNoSuchNotifications)
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}
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// Unmarshal notification bytes.
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notificationConfigBytes := buffer.Bytes()
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notificationCfg := ¬ificationConfig{}
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// Unmarshal notification bytes only if we read data.
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if err = xml.Unmarshal(notificationConfigBytes, notificationCfg); err != nil {
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return nil, traceError(err)
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}
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// Return success.
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return notificationCfg, nil
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}
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// loads notification config if any for a given bucket, returns
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// structured notification config.
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func loadListenerConfig(bucket string, objAPI ObjectLayer) ([]listenerConfig, error) {
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// in single node mode, there are no peers, so in this case
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// there is no configuration to load, as any previously
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// connected listen clients have been disconnected
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if !globalIsDistXL {
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return nil, nil
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}
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// Construct the notification config path.
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lcPath := path.Join(bucketConfigPrefix, bucket, bucketListenerConfig)
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// Acquire a write lock on notification config before modifying.
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objLock := globalNSMutex.NewNSLock(minioMetaBucket, lcPath)
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if err := objLock.GetRLock(globalOperationTimeout); err != nil {
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return nil, err
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}
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defer objLock.RUnlock()
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var buffer bytes.Buffer
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err := objAPI.GetObject(minioMetaBucket, lcPath, 0, -1, &buffer)
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if err != nil {
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// 'listener.json' not found return
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// 'errNoSuchNotifications'. This is default when no
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// bucket listeners are found on the bucket
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if isErrObjectNotFound(err) || isErrIncompleteBody(err) {
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return nil, traceError(errNoSuchNotifications)
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}
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errorIf(err, "Unable to load bucket-listeners for bucket %s", bucket)
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// Returns error for other errors.
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return nil, err
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}
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// if `listener.json` is empty we should return NoSuchNotifications.
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if buffer.Len() == 0 {
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return nil, traceError(errNoSuchNotifications)
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}
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var lCfg []listenerConfig
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lConfigBytes := buffer.Bytes()
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if err = json.Unmarshal(lConfigBytes, &lCfg); err != nil {
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errorIf(err, "Unable to unmarshal listener config from JSON.")
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return nil, traceError(err)
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}
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// Return success.
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return lCfg, nil
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}
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func persistNotificationConfig(bucket string, ncfg *notificationConfig, obj ObjectLayer) error {
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// marshal to xml
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buf, err := xml.Marshal(ncfg)
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if err != nil {
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errorIf(err, "Unable to marshal notification configuration into XML")
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return err
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}
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// build path
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ncPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
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// Acquire a write lock on notification config before modifying.
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objLock := globalNSMutex.NewNSLock(minioMetaBucket, ncPath)
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if err = objLock.GetLock(globalOperationTimeout); err != nil {
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return err
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}
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defer objLock.Unlock()
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// write object to path
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hashReader, err := hash.NewReader(bytes.NewReader(buf), int64(len(buf)), "", getSHA256Hash(buf))
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if err != nil {
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errorIf(err, "Unable to write bucket notification configuration.")
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return err
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}
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_, err = obj.PutObject(minioMetaBucket, ncPath, hashReader, nil)
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if err != nil {
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errorIf(err, "Unable to write bucket notification configuration.")
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return err
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}
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return nil
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}
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// Persists validated listener config to object layer.
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func persistListenerConfig(bucket string, lcfg []listenerConfig, obj ObjectLayer) error {
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buf, err := json.Marshal(lcfg)
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if err != nil {
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errorIf(err, "Unable to marshal listener config to JSON.")
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return err
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}
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// build path
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lcPath := path.Join(bucketConfigPrefix, bucket, bucketListenerConfig)
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// Acquire a write lock on notification config before modifying.
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objLock := globalNSMutex.NewNSLock(minioMetaBucket, lcPath)
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if err = objLock.GetLock(globalOperationTimeout); err != nil {
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return err
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}
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defer objLock.Unlock()
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// write object to path
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hashReader, err := hash.NewReader(bytes.NewReader(buf), int64(len(buf)), "", getSHA256Hash(buf))
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if err != nil {
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errorIf(err, "Unable to write bucket listener configuration to object layer.")
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return err
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}
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// write object to path
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_, err = obj.PutObject(minioMetaBucket, lcPath, hashReader, nil)
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if err != nil {
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errorIf(err, "Unable to write bucket listener configuration to object layer.")
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return err
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}
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return nil
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}
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// Removes notification.xml for a given bucket, only used during DeleteBucket.
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func removeNotificationConfig(bucket string, objAPI ObjectLayer) error {
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// Verify bucket is valid.
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if !IsValidBucketName(bucket) {
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return BucketNameInvalid{Bucket: bucket}
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}
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ncPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
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// Acquire a write lock on notification config before modifying.
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objLock := globalNSMutex.NewNSLock(minioMetaBucket, ncPath)
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if err := objLock.GetLock(globalOperationTimeout); err != nil {
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return err
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}
|
|
defer objLock.Unlock()
|
|
return objAPI.DeleteObject(minioMetaBucket, ncPath)
|
|
}
|
|
|
|
// Remove listener configuration from storage layer. Used when a bucket is deleted.
|
|
func removeListenerConfig(bucket string, objAPI ObjectLayer) error {
|
|
// make the path
|
|
lcPath := path.Join(bucketConfigPrefix, bucket, bucketListenerConfig)
|
|
|
|
// Acquire a write lock on notification config before modifying.
|
|
objLock := globalNSMutex.NewNSLock(minioMetaBucket, lcPath)
|
|
if err := objLock.GetLock(globalOperationTimeout); err != nil {
|
|
return err
|
|
}
|
|
defer objLock.Unlock()
|
|
return objAPI.DeleteObject(minioMetaBucket, lcPath)
|
|
}
|
|
|
|
// Loads both notification and listener config.
|
|
func loadNotificationAndListenerConfig(bucketName string, objAPI ObjectLayer) (nCfg *notificationConfig, lCfg []listenerConfig, err error) {
|
|
// Loads notification config if any.
|
|
nCfg, err = loadNotificationConfig(bucketName, objAPI)
|
|
if err != nil && !isErrIgnored(err, errDiskNotFound, errNoSuchNotifications) {
|
|
return nil, nil, err
|
|
}
|
|
|
|
// Loads listener config if any.
|
|
lCfg, err = loadListenerConfig(bucketName, objAPI)
|
|
if err != nil && !isErrIgnored(err, errDiskNotFound, errNoSuchNotifications) {
|
|
return nil, nil, err
|
|
}
|
|
return nCfg, lCfg, nil
|
|
}
|
|
|
|
// loads all bucket notifications if present.
|
|
func loadAllBucketNotifications(objAPI ObjectLayer) (map[string]*notificationConfig, map[string][]listenerConfig, error) {
|
|
// List buckets to proceed loading all notification configuration.
|
|
buckets, err := objAPI.ListBuckets()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
nConfigs := make(map[string]*notificationConfig)
|
|
lConfigs := make(map[string][]listenerConfig)
|
|
|
|
// Loads all bucket notifications.
|
|
for _, bucket := range buckets {
|
|
// Load persistent notification and listener configurations
|
|
// a given bucket name.
|
|
nConfigs[bucket.Name], lConfigs[bucket.Name], err = loadNotificationAndListenerConfig(bucket.Name, objAPI)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
|
|
// Success.
|
|
return nConfigs, lConfigs, nil
|
|
}
|
|
|
|
// addQueueTarget - calls newTargetFunc function and adds its returned value to queueTargets
|
|
func addQueueTarget(queueTargets map[string]*logrus.Logger,
|
|
accountID, queueType string,
|
|
newTargetFunc func(string) (*logrus.Logger, error)) (string, error) {
|
|
|
|
// Construct the queue ARN for AMQP.
|
|
queueARN := minioSqs + serverConfig.GetRegion() + ":" + accountID + ":" + queueType
|
|
|
|
// Queue target if already initialized we move to the next ARN.
|
|
if _, ok := queueTargets[queueARN]; ok {
|
|
return queueARN, nil
|
|
}
|
|
|
|
// Using accountID we can now initialize a new AMQP logrus instance.
|
|
logger, err := newTargetFunc(accountID)
|
|
if err == nil {
|
|
queueTargets[queueARN] = logger
|
|
}
|
|
|
|
return queueARN, err
|
|
}
|
|
|
|
// Loads all queue targets, initializes each queueARNs depending on their config.
|
|
// Each instance of queueARN registers its own logrus to communicate with the
|
|
// queue service. QueueARN once initialized is not initialized again for the
|
|
// same queueARN, instead previous connection is used.
|
|
func loadAllQueueTargets() (map[string]*logrus.Logger, error) {
|
|
queueTargets := make(map[string]*logrus.Logger)
|
|
// Load all amqp targets, initialize their respective loggers.
|
|
for accountID, amqpN := range serverConfig.Notify.GetAMQP() {
|
|
if !amqpN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeAMQP, newAMQPNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load all mqtt targets, initialize their respective loggers.
|
|
for accountID, mqttN := range serverConfig.Notify.GetMQTT() {
|
|
if !mqttN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeMQTT, newMQTTNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load all nats targets, initialize their respective loggers.
|
|
for accountID, natsN := range serverConfig.Notify.GetNATS() {
|
|
if !natsN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeNATS, newNATSNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load redis targets, initialize their respective loggers.
|
|
for accountID, redisN := range serverConfig.Notify.GetRedis() {
|
|
if !redisN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeRedis, newRedisNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load Webhook targets, initialize their respective loggers.
|
|
for accountID, webhookN := range serverConfig.Notify.GetWebhook() {
|
|
if !webhookN.Enable {
|
|
continue
|
|
}
|
|
if _, err := addQueueTarget(queueTargets, accountID, queueTypeWebhook, newWebhookNotify); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load elastic targets, initialize their respective loggers.
|
|
for accountID, elasticN := range serverConfig.Notify.GetElasticSearch() {
|
|
if !elasticN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeElastic, newElasticNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load PostgreSQL targets, initialize their respective loggers.
|
|
for accountID, pgN := range serverConfig.Notify.GetPostgreSQL() {
|
|
if !pgN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypePostgreSQL, newPostgreSQLNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load MySQL targets, initialize their respective loggers.
|
|
for accountID, msqlN := range serverConfig.Notify.GetMySQL() {
|
|
if !msqlN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeMySQL, newMySQLNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Load Kafka targets, initialize their respective loggers.
|
|
for accountID, kafkaN := range serverConfig.Notify.GetKafka() {
|
|
if !kafkaN.Enable {
|
|
continue
|
|
}
|
|
|
|
if queueARN, err := addQueueTarget(queueTargets, accountID, queueTypeKafka, newKafkaNotify); err != nil {
|
|
if _, ok := err.(net.Error); ok {
|
|
err = &net.OpError{
|
|
Op: "Connecting to " + queueARN,
|
|
Net: "tcp",
|
|
Err: err,
|
|
}
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Successfully initialized queue targets.
|
|
return queueTargets, nil
|
|
}
|
|
|
|
// Global instance of event notification queue.
|
|
var globalEventNotifier *eventNotifier
|
|
|
|
// Initialize event notifier.
|
|
func initEventNotifier(objAPI ObjectLayer) error {
|
|
if objAPI == nil {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
// Read all saved bucket notifications.
|
|
nConfigs, lConfigs, err := loadAllBucketNotifications(objAPI)
|
|
if err != nil {
|
|
errorIf(err, "Error loading bucket notifications - %v", err)
|
|
return err
|
|
}
|
|
|
|
// Initializes all queue targets.
|
|
queueTargets, err := loadAllQueueTargets()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Initialize internal listener targets
|
|
listenTargets := make(map[string]*listenerLogger)
|
|
for _, listeners := range lConfigs {
|
|
for _, listener := range listeners {
|
|
ln, err := newListenerLogger(
|
|
listener.TopicConfig.TopicARN,
|
|
listener.TargetServer,
|
|
)
|
|
if err != nil {
|
|
errorIf(err, "Unable to initialize listener target logger.")
|
|
//TODO: improve error
|
|
return fmt.Errorf("Error initializing listner target logger - %v", err)
|
|
}
|
|
listenTargets[listener.TopicConfig.TopicARN] = ln
|
|
}
|
|
}
|
|
|
|
// Initialize event notifier queue.
|
|
globalEventNotifier = &eventNotifier{
|
|
external: externalNotifier{
|
|
notificationConfigs: nConfigs,
|
|
targets: queueTargets,
|
|
rwMutex: &sync.RWMutex{},
|
|
},
|
|
internal: internalNotifier{
|
|
rwMutex: &sync.RWMutex{},
|
|
targets: listenTargets,
|
|
listenerConfigs: lConfigs,
|
|
connectedListeners: make(map[string]chan []NotificationEvent),
|
|
},
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|