minio/cmd/daily-lifecycle-ops.go
2020-03-27 18:57:50 -07:00

128 lines
3.1 KiB
Go

/*
* MinIO Cloud Storage, (C) 2019 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 (
"context"
"time"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/bucket/lifecycle"
"github.com/minio/minio/pkg/event"
)
const (
bgLifecycleInterval = 24 * time.Hour
bgLifecycleTick = time.Hour
)
// initDailyLifecycle starts the routine that receives the daily
// listing of all objects and applies any matching bucket lifecycle
// rules.
func initDailyLifecycle(ctx context.Context, objAPI ObjectLayer) {
go startDailyLifecycle(ctx, objAPI)
}
func startDailyLifecycle(ctx context.Context, objAPI ObjectLayer) {
for {
select {
case <-ctx.Done():
return
case <-time.NewTimer(bgLifecycleInterval).C:
// Perform one lifecycle operation
logger.LogIf(ctx, lifecycleRound(ctx, objAPI))
}
}
}
func lifecycleRound(ctx context.Context, objAPI ObjectLayer) error {
buckets, err := objAPI.ListBuckets(ctx)
if err != nil {
return err
}
for _, bucket := range buckets {
// Check if the current bucket has a configured lifecycle policy, skip otherwise
l, ok := globalLifecycleSys.Get(bucket.Name)
if !ok {
continue
}
// Calculate the common prefix of all lifecycle rules
var prefixes []string
for _, rule := range l.Rules {
prefixes = append(prefixes, rule.Prefix())
}
commonPrefix := lcp(prefixes)
// Allocate new results channel to receive ObjectInfo.
objInfoCh := make(chan ObjectInfo)
// Walk through all objects
if err := objAPI.Walk(ctx, bucket.Name, commonPrefix, objInfoCh); err != nil {
return err
}
for {
var objects []string
for obj := range objInfoCh {
if len(objects) == maxObjectList {
// Reached maximum delete requests, attempt a delete for now.
break
}
// Find the action that need to be executed
if l.ComputeAction(obj.Name, obj.UserTags, obj.ModTime) == lifecycle.DeleteAction {
objects = append(objects, obj.Name)
}
}
// Nothing to do.
if len(objects) == 0 {
break
}
waitForLowHTTPReq(int32(globalEndpoints.NEndpoints()))
// Deletes a list of objects.
deleteErrs, err := objAPI.DeleteObjects(ctx, bucket.Name, objects)
if err != nil {
logger.LogIf(ctx, err)
} else {
for i := range deleteErrs {
if deleteErrs[i] != nil {
logger.LogIf(ctx, deleteErrs[i])
continue
}
// Notify object deleted event.
sendEvent(eventArgs{
EventName: event.ObjectRemovedDelete,
BucketName: bucket.Name,
Object: ObjectInfo{
Name: objects[i],
},
Host: "Internal: [ILM-EXPIRY]",
})
}
}
}
}
return nil
}