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Copy pathbucket-metadata.go
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134 lines (111 loc) · 4.19 KB
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/*
* Minio Cloud Storage, (C) 2014-2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import "encoding/json"
// BucketMetaState - Interface to update bucket metadata in-memory
// state.
type BucketMetaState interface {
// Updates bucket notification
UpdateBucketNotification(args *SetBucketNotificationPeerArgs) error
// Updates bucket listener
UpdateBucketListener(args *SetBucketListenerPeerArgs) error
// Updates bucket policy
UpdateBucketPolicy(args *SetBucketPolicyPeerArgs) error
// Sends event
SendEvent(args *EventArgs) error
}
// BucketUpdater - Interface implementer calls one of BucketMetaState's methods.
type BucketUpdater interface {
BucketUpdate(client BucketMetaState) error
}
// Type that implements BucketMetaState for local node.
type localBucketMetaState struct {
ObjectAPI func() ObjectLayer
}
// localBucketMetaState.UpdateBucketNotification - updates in-memory global bucket
// notification info.
func (lc *localBucketMetaState) UpdateBucketNotification(args *SetBucketNotificationPeerArgs) error {
// check if object layer is available.
objAPI := lc.ObjectAPI()
if objAPI == nil {
return errServerNotInitialized
}
globalEventNotifier.SetBucketNotificationConfig(args.Bucket, args.NCfg)
return nil
}
// localBucketMetaState.UpdateBucketListener - updates in-memory global bucket
// listeners info.
func (lc *localBucketMetaState) UpdateBucketListener(args *SetBucketListenerPeerArgs) error {
// check if object layer is available.
objAPI := lc.ObjectAPI()
if objAPI == nil {
return errServerNotInitialized
}
// Update in-memory notification config.
return globalEventNotifier.SetBucketListenerConfig(args.Bucket, args.LCfg)
}
// localBucketMetaState.UpdateBucketPolicy - updates in-memory global bucket
// policy info.
func (lc *localBucketMetaState) UpdateBucketPolicy(args *SetBucketPolicyPeerArgs) error {
// check if object layer is available.
objAPI := lc.ObjectAPI()
if objAPI == nil {
return errServerNotInitialized
}
var pCh policyChange
if err := json.Unmarshal(args.PChBytes, &pCh); err != nil {
return err
}
return globalBucketPolicies.SetBucketPolicy(args.Bucket, pCh)
}
// localBucketMetaState.SendEvent - sends event to local event notifier via
// `globalEventNotifier`
func (lc *localBucketMetaState) SendEvent(args *EventArgs) error {
// check if object layer is available.
objAPI := lc.ObjectAPI()
if objAPI == nil {
return errServerNotInitialized
}
return globalEventNotifier.SendListenerEvent(args.Arn, args.Event)
}
// Type that implements BucketMetaState for remote node.
type remoteBucketMetaState struct {
*AuthRPCClient
}
// remoteBucketMetaState.UpdateBucketNotification - sends bucket notification
// change to remote peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketNotification(args *SetBucketNotificationPeerArgs) error {
reply := AuthRPCReply{}
return rc.Call("S3.SetBucketNotificationPeer", args, &reply)
}
// remoteBucketMetaState.UpdateBucketListener - sends bucket listener change to
// remote peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketListener(args *SetBucketListenerPeerArgs) error {
reply := AuthRPCReply{}
return rc.Call("S3.SetBucketListenerPeer", args, &reply)
}
// remoteBucketMetaState.UpdateBucketPolicy - sends bucket policy change to remote
// peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketPolicy(args *SetBucketPolicyPeerArgs) error {
reply := AuthRPCReply{}
return rc.Call("S3.SetBucketPolicyPeer", args, &reply)
}
// remoteBucketMetaState.SendEvent - sends event for bucket listener to remote
// peer via RPC call.
func (rc *remoteBucketMetaState) SendEvent(args *EventArgs) error {
reply := AuthRPCReply{}
return rc.Call("S3.Event", args, &reply)
}