d46386246f
Current implementation heavily relies on readAllFileInfo but with the advent of xl.meta inlined with data, we cannot easily avoid reading data when we are only interested is updating metadata, this leads to invariably write amplification during metadata updates, repeatedly reading data when we are only interested in updating metadata. This PR ensures that we implement a metadata only update API at storage layer, that handles updates to metadata alone for any given version - given the version is valid and present. This helps reduce the chattiness for following calls.. - PutObjectTags - DeleteObjectTags - PutObjectLegalHold - PutObjectRetention - ReplicateObject (updates metadata on replication status)
680 lines
20 KiB
Go
680 lines
20 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2018-2020 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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"context"
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"encoding/gob"
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"encoding/hex"
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"errors"
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"io"
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"io/ioutil"
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"net/url"
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"path"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/minio/minio/cmd/http"
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xhttp "github.com/minio/minio/cmd/http"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/cmd/rest"
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xnet "github.com/minio/minio/pkg/net"
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xbufio "github.com/philhofer/fwd"
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"github.com/tinylib/msgp/msgp"
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)
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func isNetworkError(err error) bool {
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if err == nil {
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return false
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}
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if nerr, ok := err.(*rest.NetworkError); ok {
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return xnet.IsNetworkOrHostDown(nerr.Err, false)
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}
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return false
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}
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// Converts network error to storageErr. This function is
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// written so that the storageAPI errors are consistent
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// across network disks.
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func toStorageErr(err error) error {
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if err == nil {
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return nil
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}
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if isNetworkError(err) {
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return errDiskNotFound
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}
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switch err.Error() {
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case errFaultyDisk.Error():
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return errFaultyDisk
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case errFileCorrupt.Error():
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return errFileCorrupt
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case errUnexpected.Error():
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return errUnexpected
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case errDiskFull.Error():
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return errDiskFull
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case errVolumeNotFound.Error():
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return errVolumeNotFound
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case errVolumeExists.Error():
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return errVolumeExists
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case errFileNotFound.Error():
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return errFileNotFound
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case errFileVersionNotFound.Error():
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return errFileVersionNotFound
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case errFileNameTooLong.Error():
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return errFileNameTooLong
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case errFileAccessDenied.Error():
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return errFileAccessDenied
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case errPathNotFound.Error():
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return errPathNotFound
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case errIsNotRegular.Error():
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return errIsNotRegular
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case errVolumeNotEmpty.Error():
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return errVolumeNotEmpty
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case errVolumeAccessDenied.Error():
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return errVolumeAccessDenied
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case errCorruptedFormat.Error():
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return errCorruptedFormat
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case errUnformattedDisk.Error():
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return errUnformattedDisk
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case errInvalidAccessKeyID.Error():
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return errInvalidAccessKeyID
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case errAuthentication.Error():
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return errAuthentication
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case errRPCAPIVersionUnsupported.Error():
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return errRPCAPIVersionUnsupported
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case errServerTimeMismatch.Error():
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return errServerTimeMismatch
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case io.EOF.Error():
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return io.EOF
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case io.ErrUnexpectedEOF.Error():
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return io.ErrUnexpectedEOF
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case errDiskStale.Error():
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return errDiskNotFound
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case errDiskNotFound.Error():
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return errDiskNotFound
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}
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return err
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}
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// Abstracts a remote disk.
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type storageRESTClient struct {
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endpoint Endpoint
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restClient *rest.Client
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diskID string
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// Indexes, will be -1 until assigned a set.
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poolIndex, setIndex, diskIndex int
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diskInfoCache timedValue
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diskHealCache timedValue
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}
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// Retrieve location indexes.
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func (client *storageRESTClient) GetDiskLoc() (poolIdx, setIdx, diskIdx int) {
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return client.poolIndex, client.setIndex, client.diskIndex
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}
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// Set location indexes.
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func (client *storageRESTClient) SetDiskLoc(poolIdx, setIdx, diskIdx int) {
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client.poolIndex = poolIdx
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client.setIndex = setIdx
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client.diskIndex = diskIdx
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}
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// Wrapper to restClient.Call to handle network errors, in case of network error the connection is makred disconnected
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// permanently. The only way to restore the storage connection is at the xl-sets layer by xlsets.monitorAndConnectEndpoints()
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// after verifying format.json
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func (client *storageRESTClient) call(ctx context.Context, method string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
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if values == nil {
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values = make(url.Values)
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}
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values.Set(storageRESTDiskID, client.diskID)
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respBody, err := client.restClient.Call(ctx, method, values, body, length)
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if err == nil {
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return respBody, nil
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}
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err = toStorageErr(err)
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return nil, err
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}
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// Stringer provides a canonicalized representation of network device.
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func (client *storageRESTClient) String() string {
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return client.endpoint.String()
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}
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// IsOnline - returns whether RPC client failed to connect or not.
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func (client *storageRESTClient) IsOnline() bool {
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return client.restClient.IsOnline()
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}
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func (client *storageRESTClient) IsLocal() bool {
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return false
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}
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func (client *storageRESTClient) Hostname() string {
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return client.endpoint.Host
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}
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func (client *storageRESTClient) Endpoint() Endpoint {
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return client.endpoint
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}
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func (client *storageRESTClient) Healing() *healingTracker {
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client.diskHealCache.Once.Do(func() {
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// Update at least every second.
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client.diskHealCache.TTL = time.Second
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client.diskHealCache.Update = func() (interface{}, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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b, err := client.ReadAll(ctx, minioMetaBucket,
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pathJoin(bucketMetaPrefix, healingTrackerFilename))
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if err != nil {
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// If error, likely not healing.
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return (*healingTracker)(nil), nil
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}
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var h healingTracker
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_, err = h.UnmarshalMsg(b)
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return &h, err
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}
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})
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val, _ := client.diskHealCache.Get()
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return val.(*healingTracker)
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}
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func (client *storageRESTClient) NSScanner(ctx context.Context, cache dataUsageCache) (dataUsageCache, error) {
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pr, pw := io.Pipe()
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go func() {
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pw.CloseWithError(cache.serializeTo(pw))
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}()
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respBody, err := client.call(ctx, storageRESTMethodNSScanner, url.Values{}, pr, -1)
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defer http.DrainBody(respBody)
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if err != nil {
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pr.Close()
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return cache, err
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}
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pr.Close()
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var newCache dataUsageCache
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pr, pw = io.Pipe()
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go func() {
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pw.CloseWithError(waitForHTTPStream(respBody, pw))
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}()
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err = newCache.deserialize(pr)
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pr.CloseWithError(err)
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return newCache, err
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}
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func (client *storageRESTClient) GetDiskID() (string, error) {
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// This call should never be over the network, this is always
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// a cached value - caller should make sure to use this
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// function on a fresh disk or make sure to look at the error
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// from a different networked call to validate the GetDiskID()
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return client.diskID, nil
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}
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func (client *storageRESTClient) SetDiskID(id string) {
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client.diskID = id
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}
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// DiskInfo - fetch disk information for a remote disk.
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func (client *storageRESTClient) DiskInfo(ctx context.Context) (info DiskInfo, err error) {
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client.diskInfoCache.Once.Do(func() {
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client.diskInfoCache.TTL = time.Second
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client.diskInfoCache.Update = func() (interface{}, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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respBody, err := client.call(ctx, storageRESTMethodDiskInfo, nil, nil, -1)
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if err != nil {
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return info, err
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}
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defer http.DrainBody(respBody)
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if err = msgp.Decode(respBody, &info); err != nil {
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return info, err
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}
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if info.Error != "" {
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return info, toStorageErr(errors.New(info.Error))
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}
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return info, nil
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}
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})
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val, err := client.diskInfoCache.Get()
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if err == nil {
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info = val.(DiskInfo)
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}
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return info, err
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}
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// MakeVolBulk - create multiple volumes in a bulk operation.
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func (client *storageRESTClient) MakeVolBulk(ctx context.Context, volumes ...string) (err error) {
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values := make(url.Values)
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values.Set(storageRESTVolumes, strings.Join(volumes, ","))
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respBody, err := client.call(ctx, storageRESTMethodMakeVolBulk, values, nil, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// MakeVol - create a volume on a remote disk.
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func (client *storageRESTClient) MakeVol(ctx context.Context, volume string) (err error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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respBody, err := client.call(ctx, storageRESTMethodMakeVol, values, nil, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// ListVols - List all volumes on a remote disk.
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func (client *storageRESTClient) ListVols(ctx context.Context) (vols []VolInfo, err error) {
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respBody, err := client.call(ctx, storageRESTMethodListVols, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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vinfos := VolsInfo(vols)
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err = msgp.Decode(respBody, &vinfos)
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return vinfos, err
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}
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// StatVol - get volume info over the network.
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func (client *storageRESTClient) StatVol(ctx context.Context, volume string) (vol VolInfo, err error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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respBody, err := client.call(ctx, storageRESTMethodStatVol, values, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = msgp.Decode(respBody, &vol)
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return vol, err
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}
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// DeleteVol - Deletes a volume over the network.
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func (client *storageRESTClient) DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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if forceDelete {
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values.Set(storageRESTForceDelete, "true")
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}
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respBody, err := client.call(ctx, storageRESTMethodDeleteVol, values, nil, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// AppendFile - append to a file.
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func (client *storageRESTClient) AppendFile(ctx context.Context, volume string, path string, buf []byte) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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reader := bytes.NewReader(buf)
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respBody, err := client.call(ctx, storageRESTMethodAppendFile, values, reader, -1)
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defer http.DrainBody(respBody)
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return err
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}
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func (client *storageRESTClient) CreateFile(ctx context.Context, volume, path string, size int64, reader io.Reader) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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values.Set(storageRESTLength, strconv.Itoa(int(size)))
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respBody, err := client.call(ctx, storageRESTMethodCreateFile, values, ioutil.NopCloser(reader), size)
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if err != nil {
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return err
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}
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_, err = waitForHTTPResponse(respBody)
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defer http.DrainBody(respBody)
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return err
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}
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func (client *storageRESTClient) WriteMetadata(ctx context.Context, volume, path string, fi FileInfo) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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var reader bytes.Buffer
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if err := msgp.Encode(&reader, &fi); err != nil {
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return err
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}
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respBody, err := client.call(ctx, storageRESTMethodWriteMetadata, values, &reader, -1)
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defer http.DrainBody(respBody)
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return err
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}
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func (client *storageRESTClient) UpdateMetadata(ctx context.Context, volume, path string, fi FileInfo) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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var reader bytes.Buffer
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if err := msgp.Encode(&reader, &fi); err != nil {
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return err
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}
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respBody, err := client.call(ctx, storageRESTMethodUpdateMetadata, values, &reader, -1)
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defer http.DrainBody(respBody)
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return err
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}
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func (client *storageRESTClient) DeleteVersion(ctx context.Context, volume, path string, fi FileInfo, forceDelMarker bool) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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values.Set(storageRESTForceDelMarker, strconv.FormatBool(forceDelMarker))
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var buffer bytes.Buffer
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if err := msgp.Encode(&buffer, &fi); err != nil {
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return err
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}
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respBody, err := client.call(ctx, storageRESTMethodDeleteVersion, values, &buffer, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// WriteAll - write all data to a file.
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func (client *storageRESTClient) WriteAll(ctx context.Context, volume string, path string, b []byte) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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respBody, err := client.call(ctx, storageRESTMethodWriteAll, values, bytes.NewBuffer(b), int64(len(b)))
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defer http.DrainBody(respBody)
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return err
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}
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// CheckFile - stat a file metadata.
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func (client *storageRESTClient) CheckFile(ctx context.Context, volume string, path string) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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respBody, err := client.call(ctx, storageRESTMethodCheckFile, values, nil, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// CheckParts - stat all file parts.
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func (client *storageRESTClient) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) error {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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var reader bytes.Buffer
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if err := msgp.Encode(&reader, &fi); err != nil {
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logger.LogIf(context.Background(), err)
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return err
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}
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respBody, err := client.call(ctx, storageRESTMethodCheckParts, values, &reader, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// RenameData - rename source path to destination path atomically, metadata and data file.
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func (client *storageRESTClient) RenameData(ctx context.Context, srcVolume, srcPath, dataDir, dstVolume, dstPath string) (err error) {
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values := make(url.Values)
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values.Set(storageRESTSrcVolume, srcVolume)
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values.Set(storageRESTSrcPath, srcPath)
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values.Set(storageRESTDataDir, dataDir)
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values.Set(storageRESTDstVolume, dstVolume)
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values.Set(storageRESTDstPath, dstPath)
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respBody, err := client.call(ctx, storageRESTMethodRenameData, values, nil, -1)
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defer http.DrainBody(respBody)
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return err
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}
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// where we keep old *Readers
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var readMsgpReaderPool = sync.Pool{New: func() interface{} { return &msgp.Reader{} }}
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// mspNewReader returns a *Reader that reads from the provided reader.
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// The reader will be buffered.
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func msgpNewReader(r io.Reader) *msgp.Reader {
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p := readMsgpReaderPool.Get().(*msgp.Reader)
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if p.R == nil {
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p.R = xbufio.NewReaderSize(r, 8<<10)
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} else {
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p.R.Reset(r)
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}
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return p
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}
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func (client *storageRESTClient) ReadVersion(ctx context.Context, volume, path, versionID string, readData bool) (fi FileInfo, err error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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values.Set(storageRESTVersionID, versionID)
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values.Set(storageRESTReadData, strconv.FormatBool(readData))
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respBody, err := client.call(ctx, storageRESTMethodReadVersion, values, nil, -1)
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if err != nil {
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return fi, err
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}
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defer http.DrainBody(respBody)
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dec := msgpNewReader(respBody)
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defer readMsgpReaderPool.Put(dec)
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err = fi.DecodeMsg(dec)
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return fi, err
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}
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// ReadAll - reads all contents of a file.
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func (client *storageRESTClient) ReadAll(ctx context.Context, volume string, path string) ([]byte, error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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respBody, err := client.call(ctx, storageRESTMethodReadAll, values, nil, -1)
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if err != nil {
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return nil, err
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}
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defer http.DrainBody(respBody)
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return ioutil.ReadAll(respBody)
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}
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// ReadFileStream - returns a reader for the requested file.
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func (client *storageRESTClient) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTFilePath, path)
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values.Set(storageRESTOffset, strconv.Itoa(int(offset)))
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values.Set(storageRESTLength, strconv.Itoa(int(length)))
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|
respBody, err := client.call(ctx, storageRESTMethodReadFileStream, values, nil, -1)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return respBody, nil
|
|
}
|
|
|
|
// ReadFile - reads section of a file.
|
|
func (client *storageRESTClient) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (int64, error) {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTFilePath, path)
|
|
values.Set(storageRESTOffset, strconv.Itoa(int(offset)))
|
|
values.Set(storageRESTLength, strconv.Itoa(len(buf)))
|
|
if verifier != nil {
|
|
values.Set(storageRESTBitrotAlgo, verifier.algorithm.String())
|
|
values.Set(storageRESTBitrotHash, hex.EncodeToString(verifier.sum))
|
|
} else {
|
|
values.Set(storageRESTBitrotAlgo, "")
|
|
values.Set(storageRESTBitrotHash, "")
|
|
}
|
|
respBody, err := client.call(ctx, storageRESTMethodReadFile, values, nil, -1)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
n, err := io.ReadFull(respBody, buf)
|
|
return int64(n), err
|
|
}
|
|
|
|
// ListDir - lists a directory.
|
|
func (client *storageRESTClient) ListDir(ctx context.Context, volume, dirPath string, count int) (entries []string, err error) {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTDirPath, dirPath)
|
|
values.Set(storageRESTCount, strconv.Itoa(count))
|
|
respBody, err := client.call(ctx, storageRESTMethodListDir, values, nil, -1)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
err = gob.NewDecoder(respBody).Decode(&entries)
|
|
return entries, err
|
|
}
|
|
|
|
// DeleteFile - deletes a file.
|
|
func (client *storageRESTClient) Delete(ctx context.Context, volume string, path string, recursive bool) error {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTFilePath, path)
|
|
values.Set(storageRESTRecursive, strconv.FormatBool(recursive))
|
|
|
|
respBody, err := client.call(ctx, storageRESTMethodDeleteFile, values, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
return err
|
|
}
|
|
|
|
// DeleteVersions - deletes list of specified versions if present
|
|
func (client *storageRESTClient) DeleteVersions(ctx context.Context, volume string, versions []FileInfo) (errs []error) {
|
|
if len(versions) == 0 {
|
|
return errs
|
|
}
|
|
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTTotalVersions, strconv.Itoa(len(versions)))
|
|
|
|
var buffer bytes.Buffer
|
|
encoder := msgp.NewWriter(&buffer)
|
|
for _, version := range versions {
|
|
version.EncodeMsg(encoder)
|
|
}
|
|
logger.LogIf(ctx, encoder.Flush())
|
|
|
|
errs = make([]error, len(versions))
|
|
|
|
respBody, err := client.call(ctx, storageRESTMethodDeleteVersions, values, &buffer, -1)
|
|
defer http.DrainBody(respBody)
|
|
if err != nil {
|
|
for i := range errs {
|
|
errs[i] = err
|
|
}
|
|
return errs
|
|
}
|
|
|
|
reader, err := waitForHTTPResponse(respBody)
|
|
if err != nil {
|
|
for i := range errs {
|
|
errs[i] = err
|
|
}
|
|
return errs
|
|
}
|
|
|
|
dErrResp := &DeleteVersionsErrsResp{}
|
|
if err = gob.NewDecoder(reader).Decode(dErrResp); err != nil {
|
|
for i := range errs {
|
|
errs[i] = err
|
|
}
|
|
return errs
|
|
}
|
|
|
|
for i, dErr := range dErrResp.Errs {
|
|
errs[i] = toStorageErr(dErr)
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// RenameFile - renames a file.
|
|
func (client *storageRESTClient) RenameFile(ctx context.Context, srcVolume, srcPath, dstVolume, dstPath string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTSrcVolume, srcVolume)
|
|
values.Set(storageRESTSrcPath, srcPath)
|
|
values.Set(storageRESTDstVolume, dstVolume)
|
|
values.Set(storageRESTDstPath, dstPath)
|
|
respBody, err := client.call(ctx, storageRESTMethodRenameFile, values, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
return err
|
|
}
|
|
|
|
func (client *storageRESTClient) VerifyFile(ctx context.Context, volume, path string, fi FileInfo) error {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTFilePath, path)
|
|
|
|
var reader bytes.Buffer
|
|
if err := msgp.Encode(&reader, &fi); err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(ctx, storageRESTMethodVerifyFile, values, &reader, -1)
|
|
defer http.DrainBody(respBody)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respReader, err := waitForHTTPResponse(respBody)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
verifyResp := &VerifyFileResp{}
|
|
if err = gob.NewDecoder(respReader).Decode(verifyResp); err != nil {
|
|
return err
|
|
}
|
|
|
|
return toStorageErr(verifyResp.Err)
|
|
}
|
|
|
|
// Close - marks the client as closed.
|
|
func (client *storageRESTClient) Close() error {
|
|
client.restClient.Close()
|
|
return nil
|
|
}
|
|
|
|
// Returns a storage rest client.
|
|
func newStorageRESTClient(endpoint Endpoint, healthcheck bool) *storageRESTClient {
|
|
serverURL := &url.URL{
|
|
Scheme: endpoint.Scheme,
|
|
Host: endpoint.Host,
|
|
Path: path.Join(storageRESTPrefix, endpoint.Path, storageRESTVersion),
|
|
}
|
|
|
|
restClient := rest.NewClient(serverURL, globalInternodeTransport, newAuthToken)
|
|
|
|
if healthcheck {
|
|
// Use a separate client to avoid recursive calls.
|
|
healthClient := rest.NewClient(serverURL, globalInternodeTransport, newAuthToken)
|
|
healthClient.ExpectTimeouts = true
|
|
restClient.HealthCheckFn = func() bool {
|
|
ctx, cancel := context.WithTimeout(context.Background(), restClient.HealthCheckTimeout)
|
|
defer cancel()
|
|
respBody, err := healthClient.Call(ctx, storageRESTMethodHealth, nil, nil, -1)
|
|
xhttp.DrainBody(respBody)
|
|
return toStorageErr(err) != errDiskNotFound
|
|
}
|
|
}
|
|
|
|
return &storageRESTClient{endpoint: endpoint, restClient: restClient, poolIndex: -1, setIndex: -1, diskIndex: -1}
|
|
}
|