mirror of
https://gitee.com/milvus-io/milvus.git
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272 lines
7.6 KiB
Go
272 lines
7.6 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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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package storage
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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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"io"
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"io/ioutil"
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"github.com/minio/minio-go/v7"
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"github.com/minio/minio-go/v7/pkg/credentials"
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"go.uber.org/zap"
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"golang.org/x/exp/mmap"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/util/errorutil"
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"github.com/milvus-io/milvus/internal/util/retry"
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)
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// MinioChunkManager is responsible for read and write data stored in minio.
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type MinioChunkManager struct {
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*minio.Client
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ctx context.Context
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bucketName string
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}
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var _ ChunkManager = (*MinioChunkManager)(nil)
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// NewMinioChunkManager create a new local manager object.
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func NewMinioChunkManager(ctx context.Context, opts ...Option) (*MinioChunkManager, error) {
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c := newDefaultConfig()
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for _, opt := range opts {
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opt(c)
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}
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return newMinioChunkManagerWithConfig(ctx, c)
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}
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func newMinioChunkManagerWithConfig(ctx context.Context, c *config) (*MinioChunkManager, error) {
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minIOClient, err := minio.New(c.address, &minio.Options{
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Creds: credentials.NewStaticV4(c.accessKeyID, c.secretAccessKeyID, ""),
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Secure: c.useSSL,
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})
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// options nil or invalid formatted endpoint, don't need to retry
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if err != nil {
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return nil, err
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}
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var bucketExists bool
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// check valid in first query
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checkBucketFn := func() error {
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bucketExists, err = minIOClient.BucketExists(ctx, c.bucketName)
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if err != nil {
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return err
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}
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if !bucketExists {
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log.Debug("minio chunk manager new minio client", zap.Any("Check bucket", "bucket not exist"))
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if c.createBucket {
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log.Debug("minio chunk manager create minio bucket.", zap.Any("bucket name", c.bucketName))
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return minIOClient.MakeBucket(ctx, c.bucketName, minio.MakeBucketOptions{})
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}
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return fmt.Errorf("bucket %s not Existed", c.bucketName)
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}
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return nil
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}
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err = retry.Do(ctx, checkBucketFn, retry.Attempts(300))
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if err != nil {
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return nil, err
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}
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mcm := &MinioChunkManager{
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ctx: ctx,
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Client: minIOClient,
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bucketName: c.bucketName,
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}
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log.Debug("minio chunk manager new minio client success.")
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return mcm, nil
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}
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// Path returns the path of minio data if exists.
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func (mcm *MinioChunkManager) Path(filePath string) (string, error) {
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if !mcm.Exist(filePath) {
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return "", errors.New("minio file manage cannot be found with filePath:" + filePath)
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}
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return filePath, nil
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}
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// Reader returns the path of minio data if exists.
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func (mcm *MinioChunkManager) Reader(filePath string) (FileReader, error) {
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if !mcm.Exist(filePath) {
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return nil, errors.New("minio file manage cannot be found with filePath:" + filePath)
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}
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return mcm.Client.GetObject(mcm.ctx, mcm.bucketName, filePath, minio.GetObjectOptions{})
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}
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func (mcm *MinioChunkManager) Size(filePath string) (int64, error) {
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objectInfo, err := mcm.Client.StatObject(mcm.ctx, mcm.bucketName, filePath, minio.StatObjectOptions{})
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if err != nil {
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return 0, err
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}
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return objectInfo.Size, nil
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}
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// Write writes the data to minio storage.
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func (mcm *MinioChunkManager) Write(filePath string, content []byte) error {
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_, err := mcm.Client.PutObject(mcm.ctx, mcm.bucketName, filePath, bytes.NewReader(content), int64(len(content)), minio.PutObjectOptions{})
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if err != nil {
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return err
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}
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return nil
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}
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// MultiWrite saves multiple objects, the path is the key of @kvs.
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// The object value is the value of @kvs.
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func (mcm *MinioChunkManager) MultiWrite(kvs map[string][]byte) error {
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var el errorutil.ErrorList
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for key, value := range kvs {
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err := mcm.Write(key, value)
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if err != nil {
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el = append(el, err)
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}
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}
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if len(el) == 0 {
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return nil
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}
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return el
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}
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// Exist checks whether chunk is saved to minio storage.
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func (mcm *MinioChunkManager) Exist(filePath string) bool {
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_, err := mcm.Client.StatObject(mcm.ctx, mcm.bucketName, filePath, minio.StatObjectOptions{})
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return err == nil
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}
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// Read reads the minio storage data if exists.
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func (mcm *MinioChunkManager) Read(filePath string) ([]byte, error) {
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object, err := mcm.Client.GetObject(mcm.ctx, mcm.bucketName, filePath, minio.GetObjectOptions{})
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if err != nil {
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return nil, err
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}
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defer object.Close()
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return ioutil.ReadAll(object)
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}
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func (mcm *MinioChunkManager) MultiRead(keys []string) ([][]byte, error) {
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var el errorutil.ErrorList
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var objectsValues [][]byte
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for _, key := range keys {
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objectValue, err := mcm.Read(key)
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if err != nil {
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el = append(el, err)
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}
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objectsValues = append(objectsValues, objectValue)
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}
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if len(el) == 0 {
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return objectsValues, nil
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}
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return objectsValues, el
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}
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func (mcm *MinioChunkManager) ReadWithPrefix(prefix string) ([]string, [][]byte, error) {
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objectsKeys, err := mcm.ListWithPrefix(prefix)
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if err != nil {
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return nil, nil, err
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}
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objectsValues, err := mcm.MultiRead(objectsKeys)
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if err != nil {
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log.Error(fmt.Sprintf("MinIO load with prefix error. path = %s", prefix), zap.Error(err))
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return nil, nil, err
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}
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return objectsKeys, objectsValues, nil
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}
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func (mcm *MinioChunkManager) Mmap(filePath string) (*mmap.ReaderAt, error) {
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return nil, errors.New("this method has not been implemented")
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}
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// ReadAt reads specific position data of minio storage if exists.
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func (mcm *MinioChunkManager) ReadAt(filePath string, off int64, length int64) ([]byte, error) {
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if off < 0 || length < 0 {
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return nil, io.EOF
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}
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opts := minio.GetObjectOptions{}
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err := opts.SetRange(off, off+length-1)
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if err != nil {
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return nil, err
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}
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object, err := mcm.Client.GetObject(mcm.ctx, mcm.bucketName, filePath, opts)
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if err != nil {
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return nil, err
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}
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defer object.Close()
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return ioutil.ReadAll(object)
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}
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// Remove deletes an object with @key.
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func (mcm *MinioChunkManager) Remove(key string) error {
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err := mcm.Client.RemoveObject(mcm.ctx, mcm.bucketName, key, minio.RemoveObjectOptions{})
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return err
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}
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// MultiRemove deletes a objects with @keys.
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func (mcm *MinioChunkManager) MultiRemove(keys []string) error {
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var el errorutil.ErrorList
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for _, key := range keys {
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err := mcm.Remove(key)
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if err != nil {
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el = append(el, err)
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}
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}
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if len(el) == 0 {
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return nil
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}
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return el
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}
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// RemoveWithPrefix removes all objects with the same prefix @prefix from minio.
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func (mcm *MinioChunkManager) RemoveWithPrefix(prefix string) error {
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objectsCh := make(chan minio.ObjectInfo)
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go func() {
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defer close(objectsCh)
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for object := range mcm.Client.ListObjects(mcm.ctx, mcm.bucketName, minio.ListObjectsOptions{Prefix: prefix, Recursive: true}) {
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objectsCh <- object
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}
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}()
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for rErr := range mcm.Client.RemoveObjects(mcm.ctx, mcm.bucketName, objectsCh, minio.RemoveObjectsOptions{GovernanceBypass: true}) {
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if rErr.Err != nil {
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return rErr.Err
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}
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}
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return nil
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}
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func (mcm *MinioChunkManager) ListWithPrefix(prefix string) ([]string, error) {
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objects := mcm.Client.ListObjects(mcm.ctx, mcm.bucketName, minio.ListObjectsOptions{Prefix: prefix})
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var objectsKeys []string
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for object := range objects {
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objectsKeys = append(objectsKeys, object.Key)
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}
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return objectsKeys, nil
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}
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