mirror of https://github.com/minio/minio.git
497 lines
15 KiB
Go
497 lines
15 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"sync"
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"time"
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"github.com/minio/madmin-go"
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"github.com/minio/minio-go/v7/pkg/tags"
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bucketsse "github.com/minio/minio/internal/bucket/encryption"
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"github.com/minio/minio/internal/bucket/lifecycle"
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objectlock "github.com/minio/minio/internal/bucket/object/lock"
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"github.com/minio/minio/internal/bucket/replication"
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"github.com/minio/minio/internal/bucket/versioning"
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"github.com/minio/minio/internal/event"
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"github.com/minio/minio/internal/kms"
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"github.com/minio/minio/internal/logger"
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"github.com/minio/minio/internal/sync/errgroup"
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"github.com/minio/pkg/bucket/policy"
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)
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// BucketMetadataSys captures all bucket metadata for a given cluster.
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type BucketMetadataSys struct {
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sync.RWMutex
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metadataMap map[string]BucketMetadata
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}
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// Remove bucket metadata from memory.
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func (sys *BucketMetadataSys) Remove(bucket string) {
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if globalIsGateway {
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return
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}
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sys.Lock()
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delete(sys.metadataMap, bucket)
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globalBucketMonitor.DeleteBucket(bucket)
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sys.Unlock()
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}
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// Set - sets a new metadata in-memory.
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// Only a shallow copy is saved and fields with references
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// cannot be modified without causing a race condition,
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// so they should be replaced atomically and not appended to, etc.
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// Data is not persisted to disk.
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func (sys *BucketMetadataSys) Set(bucket string, meta BucketMetadata) {
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if globalIsGateway {
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return
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}
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if bucket != minioMetaBucket {
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sys.Lock()
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sys.metadataMap[bucket] = meta
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sys.Unlock()
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}
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}
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// Update update bucket metadata for the specified config file.
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// The configData data should not be modified after being sent here.
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func (sys *BucketMetadataSys) Update(ctx context.Context, bucket string, configFile string, configData []byte) (updatedAt time.Time, err error) {
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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return updatedAt, errServerNotInitialized
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}
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if globalIsGateway && globalGatewayName != NASBackendGateway {
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if configFile == bucketPolicyConfig {
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if configData == nil {
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return updatedAt, objAPI.DeleteBucketPolicy(ctx, bucket)
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}
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config, err := policy.ParseConfig(bytes.NewReader(configData), bucket)
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if err != nil {
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return updatedAt, err
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}
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return updatedAt, objAPI.SetBucketPolicy(ctx, bucket, config)
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}
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return updatedAt, NotImplemented{}
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}
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if bucket == minioMetaBucket {
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return updatedAt, errInvalidArgument
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}
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meta, err := loadBucketMetadata(ctx, objAPI, bucket)
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if err != nil {
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if !globalIsErasure && !globalIsDistErasure && errors.Is(err, errVolumeNotFound) {
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// Only single drive mode needs this fallback.
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meta = newBucketMetadata(bucket)
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} else {
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return updatedAt, err
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}
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}
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updatedAt = UTCNow()
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switch configFile {
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case bucketPolicyConfig:
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meta.PolicyConfigJSON = configData
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meta.PolicyConfigUpdatedAt = updatedAt
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case bucketNotificationConfig:
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meta.NotificationConfigXML = configData
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case bucketLifecycleConfig:
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meta.LifecycleConfigXML = configData
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case bucketSSEConfig:
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meta.EncryptionConfigXML = configData
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meta.EncryptionConfigUpdatedAt = updatedAt
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case bucketTaggingConfig:
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meta.TaggingConfigXML = configData
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meta.TaggingConfigUpdatedAt = updatedAt
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case bucketQuotaConfigFile:
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meta.QuotaConfigJSON = configData
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meta.QuotaConfigUpdatedAt = updatedAt
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case objectLockConfig:
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meta.ObjectLockConfigXML = configData
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meta.ObjectLockConfigUpdatedAt = updatedAt
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case bucketVersioningConfig:
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meta.VersioningConfigXML = configData
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meta.VersioningConfigUpdatedAt = updatedAt
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case bucketReplicationConfig:
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meta.ReplicationConfigXML = configData
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meta.ReplicationConfigUpdatedAt = updatedAt
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case bucketTargetsFile:
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meta.BucketTargetsConfigJSON, meta.BucketTargetsConfigMetaJSON, err = encryptBucketMetadata(ctx, meta.Name, configData, kms.Context{
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bucket: meta.Name,
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bucketTargetsFile: bucketTargetsFile,
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})
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if err != nil {
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return updatedAt, fmt.Errorf("Error encrypting bucket target metadata %w", err)
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}
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default:
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return updatedAt, fmt.Errorf("Unknown bucket %s metadata update requested %s", bucket, configFile)
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}
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if err := meta.Save(ctx, objAPI); err != nil {
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return updatedAt, err
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}
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sys.Set(bucket, meta)
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globalNotificationSys.LoadBucketMetadata(bgContext(ctx), bucket) // Do not use caller context here
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return updatedAt, nil
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}
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// Get metadata for a bucket.
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// If no metadata exists errConfigNotFound is returned and a new metadata is returned.
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// Only a shallow copy is returned, so referenced data should not be modified,
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// but can be replaced atomically.
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//
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// This function should only be used with
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// - GetBucketInfo
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// - ListBuckets
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// For all other bucket specific metadata, use the relevant
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// calls implemented specifically for each of those features.
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func (sys *BucketMetadataSys) Get(bucket string) (BucketMetadata, error) {
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if globalIsGateway || bucket == minioMetaBucket {
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return newBucketMetadata(bucket), errConfigNotFound
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}
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sys.RLock()
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defer sys.RUnlock()
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meta, ok := sys.metadataMap[bucket]
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if !ok {
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return newBucketMetadata(bucket), errConfigNotFound
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}
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return meta, nil
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}
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// GetVersioningConfig returns configured versioning config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetVersioningConfig(bucket string) (*versioning.Versioning, time.Time, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return &versioning.Versioning{XMLNS: "http://s3.amazonaws.com/doc/2006-03-01/"}, meta.Created, nil
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}
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return &versioning.Versioning{XMLNS: "http://s3.amazonaws.com/doc/2006-03-01/"}, time.Time{}, err
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}
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return meta.versioningConfig, meta.VersioningConfigUpdatedAt, nil
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}
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// GetTaggingConfig returns configured tagging config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetTaggingConfig(bucket string) (*tags.Tags, time.Time, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketTaggingNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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if meta.taggingConfig == nil {
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return nil, time.Time{}, BucketTaggingNotFound{Bucket: bucket}
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}
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return meta.taggingConfig, meta.TaggingConfigUpdatedAt, nil
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}
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// GetObjectLockConfig returns configured object lock config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetObjectLockConfig(bucket string) (*objectlock.Config, time.Time, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketObjectLockConfigNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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if meta.objectLockConfig == nil {
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return nil, time.Time{}, BucketObjectLockConfigNotFound{Bucket: bucket}
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}
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return meta.objectLockConfig, meta.ObjectLockConfigUpdatedAt, nil
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}
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// GetLifecycleConfig returns configured lifecycle config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetLifecycleConfig(bucket string) (*lifecycle.Lifecycle, error) {
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if globalIsGateway && globalGatewayName == NASBackendGateway {
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// Only needed in case of NAS gateway.
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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return nil, errServerNotInitialized
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}
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meta, err := loadBucketMetadata(GlobalContext, objAPI, bucket)
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if err != nil {
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return nil, err
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}
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if meta.lifecycleConfig == nil {
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return nil, BucketLifecycleNotFound{Bucket: bucket}
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}
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return meta.lifecycleConfig, nil
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}
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, BucketLifecycleNotFound{Bucket: bucket}
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}
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return nil, err
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}
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if meta.lifecycleConfig == nil {
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return nil, BucketLifecycleNotFound{Bucket: bucket}
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}
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return meta.lifecycleConfig, nil
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}
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// GetNotificationConfig returns configured notification config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetNotificationConfig(bucket string) (*event.Config, error) {
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if globalIsGateway && globalGatewayName == NASBackendGateway {
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// Only needed in case of NAS gateway.
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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return nil, errServerNotInitialized
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}
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meta, err := loadBucketMetadata(GlobalContext, objAPI, bucket)
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if err != nil {
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return nil, err
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}
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return meta.notificationConfig, nil
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}
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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return nil, err
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}
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return meta.notificationConfig, nil
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}
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// GetSSEConfig returns configured SSE config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetSSEConfig(bucket string) (*bucketsse.BucketSSEConfig, time.Time, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketSSEConfigNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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if meta.sseConfig == nil {
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return nil, time.Time{}, BucketSSEConfigNotFound{Bucket: bucket}
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}
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return meta.sseConfig, meta.EncryptionConfigUpdatedAt, nil
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}
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// CreatedAt returns the time of creation of bucket
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func (sys *BucketMetadataSys) CreatedAt(bucket string) (time.Time, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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return time.Time{}, err
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}
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return meta.Created.UTC(), nil
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}
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// GetPolicyConfig returns configured bucket policy
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetPolicyConfig(bucket string) (*policy.Policy, time.Time, error) {
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if globalIsGateway {
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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return nil, time.Time{}, errServerNotInitialized
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}
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p, err := objAPI.GetBucketPolicy(GlobalContext, bucket)
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return p, UTCNow(), err
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}
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketPolicyNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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if meta.policyConfig == nil {
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return nil, time.Time{}, BucketPolicyNotFound{Bucket: bucket}
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}
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return meta.policyConfig, meta.PolicyConfigUpdatedAt, nil
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}
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// GetQuotaConfig returns configured bucket quota
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetQuotaConfig(ctx context.Context, bucket string) (*madmin.BucketQuota, time.Time, error) {
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meta, err := sys.GetConfig(ctx, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketQuotaConfigNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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return meta.quotaConfig, meta.QuotaConfigUpdatedAt, nil
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}
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// GetReplicationConfig returns configured bucket replication config
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetReplicationConfig(ctx context.Context, bucket string) (*replication.Config, time.Time, error) {
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meta, err := sys.GetConfig(ctx, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, time.Time{}, BucketReplicationConfigNotFound{Bucket: bucket}
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}
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return nil, time.Time{}, err
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}
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if meta.replicationConfig == nil {
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return nil, time.Time{}, BucketReplicationConfigNotFound{Bucket: bucket}
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}
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return meta.replicationConfig, meta.ReplicationConfigUpdatedAt, nil
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}
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// GetBucketTargetsConfig returns configured bucket targets for this bucket
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetBucketTargetsConfig(bucket string) (*madmin.BucketTargets, error) {
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meta, err := sys.GetConfig(GlobalContext, bucket)
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if err != nil {
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if errors.Is(err, errConfigNotFound) {
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return nil, BucketRemoteTargetNotFound{Bucket: bucket}
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}
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return nil, err
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}
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if meta.bucketTargetConfig == nil {
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return nil, BucketRemoteTargetNotFound{Bucket: bucket}
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}
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return meta.bucketTargetConfig, nil
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}
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// GetConfig returns a specific configuration from the bucket metadata.
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// The returned object may not be modified.
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func (sys *BucketMetadataSys) GetConfig(ctx context.Context, bucket string) (BucketMetadata, error) {
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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return newBucketMetadata(bucket), errServerNotInitialized
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}
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if globalIsGateway {
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return newBucketMetadata(bucket), NotImplemented{}
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}
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if bucket == minioMetaBucket {
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return newBucketMetadata(bucket), errInvalidArgument
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}
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sys.RLock()
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meta, ok := sys.metadataMap[bucket]
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sys.RUnlock()
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if ok {
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return meta, nil
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}
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meta, err := loadBucketMetadata(ctx, objAPI, bucket)
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if err != nil {
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return meta, err
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}
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sys.Lock()
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sys.metadataMap[bucket] = meta
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sys.Unlock()
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return meta, nil
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}
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// Init - initializes bucket metadata system for all buckets.
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func (sys *BucketMetadataSys) Init(ctx context.Context, buckets []BucketInfo, objAPI ObjectLayer) error {
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if objAPI == nil {
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return errServerNotInitialized
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}
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// In gateway mode, we don't need to load bucket metadata except
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// NAS gateway backend.
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if globalIsGateway && !objAPI.IsNotificationSupported() {
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return nil
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}
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// Load bucket metadata sys in background
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go sys.load(ctx, buckets, objAPI)
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return nil
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}
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// concurrently load bucket metadata to speed up loading bucket metadata.
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func (sys *BucketMetadataSys) concurrentLoad(ctx context.Context, buckets []BucketInfo, objAPI ObjectLayer) {
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g := errgroup.WithNErrs(len(buckets))
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for index := range buckets {
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index := index
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g.Go(func() error {
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_, _ = objAPI.HealBucket(ctx, buckets[index].Name, madmin.HealOpts{
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// Ensure heal opts for bucket metadata be deep healed all the time.
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ScanMode: madmin.HealDeepScan,
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Recreate: true,
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})
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meta, err := loadBucketMetadata(ctx, objAPI, buckets[index].Name)
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if err != nil {
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if !globalIsErasure && !globalIsDistErasure && errors.Is(err, errVolumeNotFound) {
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meta = newBucketMetadata(buckets[index].Name)
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} else {
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return err
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}
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}
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sys.Lock()
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sys.metadataMap[buckets[index].Name] = meta
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sys.Unlock()
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globalNotificationSys.set(buckets[index], meta) // set notification targets
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globalBucketTargetSys.set(buckets[index], meta) // set remote replication targets
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return nil
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}, index)
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}
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for _, err := range g.Wait() {
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if err != nil {
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logger.LogIf(ctx, err)
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}
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}
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}
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// Loads bucket metadata for all buckets into BucketMetadataSys.
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func (sys *BucketMetadataSys) load(ctx context.Context, buckets []BucketInfo, objAPI ObjectLayer) {
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count := 100 // load 100 bucket metadata at a time.
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for {
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if len(buckets) < count {
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sys.concurrentLoad(ctx, buckets, objAPI)
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return
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}
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sys.concurrentLoad(ctx, buckets[:count], objAPI)
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buckets = buckets[count:]
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}
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}
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// Reset the state of the BucketMetadataSys.
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func (sys *BucketMetadataSys) Reset() {
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sys.Lock()
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for k := range sys.metadataMap {
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delete(sys.metadataMap, k)
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}
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sys.Unlock()
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}
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// NewBucketMetadataSys - creates new policy system.
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func NewBucketMetadataSys() *BucketMetadataSys {
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return &BucketMetadataSys{
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metadataMap: make(map[string]BucketMetadata),
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}
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}
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