/
storage-rest-client.go
894 lines (799 loc) · 26.8 KB
/
storage-rest-client.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"bytes"
"context"
"encoding/gob"
"encoding/hex"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"path"
"strconv"
"strings"
"sync"
"time"
"github.com/minio/madmin-go/v3"
"github.com/minio/minio/internal/cachevalue"
"github.com/minio/minio/internal/grid"
xhttp "github.com/minio/minio/internal/http"
xioutil "github.com/minio/minio/internal/ioutil"
"github.com/minio/minio/internal/logger"
"github.com/minio/minio/internal/rest"
xnet "github.com/minio/pkg/v2/net"
xbufio "github.com/philhofer/fwd"
"github.com/tinylib/msgp/msgp"
)
func isNetworkError(err error) bool {
if err == nil {
return false
}
if nerr, ok := err.(*rest.NetworkError); ok {
if down := xnet.IsNetworkOrHostDown(nerr.Err, false); down {
return true
}
}
if errors.Is(err, grid.ErrDisconnected) {
return true
}
// More corner cases suitable for storage REST API
switch {
// A peer node can be in shut down phase and proactively
// return 503 server closed error,consider it as an offline node
case strings.Contains(err.Error(), http.ErrServerClosed.Error()):
return true
// Corner case, the server closed the connection with a keep-alive timeout
// some requests are not retried internally, such as POST request with written body
case strings.Contains(err.Error(), "server closed idle connection"):
return true
}
return false
}
// Converts network error to storageErr. This function is
// written so that the storageAPI errors are consistent
// across network disks.
func toStorageErr(err error) error {
if err == nil {
return nil
}
if isNetworkError(err) {
return errDiskNotFound
}
switch err.Error() {
case errFaultyDisk.Error():
return errFaultyDisk
case errFaultyRemoteDisk.Error():
return errFaultyRemoteDisk
case errFileCorrupt.Error():
return errFileCorrupt
case errUnexpected.Error():
return errUnexpected
case errDiskFull.Error():
return errDiskFull
case errVolumeNotFound.Error():
return errVolumeNotFound
case errVolumeExists.Error():
return errVolumeExists
case errFileNotFound.Error():
return errFileNotFound
case errFileVersionNotFound.Error():
return errFileVersionNotFound
case errFileNameTooLong.Error():
return errFileNameTooLong
case errFileAccessDenied.Error():
return errFileAccessDenied
case errPathNotFound.Error():
return errPathNotFound
case errIsNotRegular.Error():
return errIsNotRegular
case errVolumeNotEmpty.Error():
return errVolumeNotEmpty
case errVolumeAccessDenied.Error():
return errVolumeAccessDenied
case errCorruptedFormat.Error():
return errCorruptedFormat
case errCorruptedBackend.Error():
return errCorruptedBackend
case errUnformattedDisk.Error():
return errUnformattedDisk
case errInvalidAccessKeyID.Error():
return errInvalidAccessKeyID
case errAuthentication.Error():
return errAuthentication
case errRPCAPIVersionUnsupported.Error():
return errRPCAPIVersionUnsupported
case errServerTimeMismatch.Error():
return errServerTimeMismatch
case io.EOF.Error():
return io.EOF
case io.ErrUnexpectedEOF.Error():
return io.ErrUnexpectedEOF
case errDiskStale.Error():
return errDiskNotFound
case errDiskNotFound.Error():
return errDiskNotFound
case errMaxVersionsExceeded.Error():
return errMaxVersionsExceeded
case errInconsistentDisk.Error():
return errInconsistentDisk
case errDriveIsRoot.Error():
return errDriveIsRoot
case errDiskOngoingReq.Error():
return errDiskOngoingReq
case grid.ErrUnknownHandler.Error():
return errInconsistentDisk
case grid.ErrDisconnected.Error():
return errDiskNotFound
}
return err
}
// Abstracts a remote disk.
type storageRESTClient struct {
endpoint Endpoint
restClient *rest.Client
gridConn *grid.Subroute
diskID string
formatData []byte
formatMutex sync.RWMutex
diskInfoCache *cachevalue.Cache[DiskInfo]
// Indexes, will be -1 until assigned a set.
poolIndex, setIndex, diskIndex int
}
// Retrieve location indexes.
func (client *storageRESTClient) GetDiskLoc() (poolIdx, setIdx, diskIdx int) {
return client.poolIndex, client.setIndex, client.diskIndex
}
// Set location indexes.
func (client *storageRESTClient) SetDiskLoc(poolIdx, setIdx, diskIdx int) {
client.poolIndex = poolIdx
client.setIndex = setIdx
client.diskIndex = diskIdx
}
// Wrapper to restClient.Call to handle network errors, in case of network error the connection is makred disconnected
// permanently. The only way to restore the storage connection is at the xl-sets layer by xlsets.monitorAndConnectEndpoints()
// after verifying format.json
func (client *storageRESTClient) call(ctx context.Context, method string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
if values == nil {
values = make(url.Values)
}
values.Set(storageRESTDiskID, client.diskID)
respBody, err := client.restClient.Call(ctx, method, values, body, length)
if err != nil {
return nil, toStorageErr(err)
}
return respBody, nil
}
// Stringer provides a canonicalized representation of network device.
func (client *storageRESTClient) String() string {
return client.endpoint.String()
}
// IsOnline - returns whether RPC client failed to connect or not.
func (client *storageRESTClient) IsOnline() bool {
return client.gridConn.State() == grid.StateConnected
}
// LastConn - returns when the disk is seen to be connected the last time
func (client *storageRESTClient) LastConn() time.Time {
return client.restClient.LastConn()
}
func (client *storageRESTClient) IsLocal() bool {
return false
}
func (client *storageRESTClient) Hostname() string {
return client.endpoint.Host
}
func (client *storageRESTClient) Endpoint() Endpoint {
return client.endpoint
}
func (client *storageRESTClient) Healing() *healingTracker {
// This call is not implemented for remote client on purpose.
// healing tracker is always for local disks.
return nil
}
func (client *storageRESTClient) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, _ func() bool) (dataUsageCache, error) {
defer xioutil.SafeClose(updates)
st, err := storageNSScannerRPC.Call(ctx, client.gridConn, &nsScannerOptions{
DiskID: client.diskID,
ScanMode: int(scanMode),
Cache: &cache,
})
if err != nil {
return cache, toStorageErr(err)
}
var final *dataUsageCache
err = st.Results(func(resp *nsScannerResp) error {
if resp.Update != nil {
select {
case <-ctx.Done():
case updates <- *resp.Update:
}
}
if resp.Final != nil {
final = resp.Final
}
// We can't reuse the response since it is sent upstream.
return nil
})
if err != nil {
return cache, toStorageErr(err)
}
if final == nil {
return cache, errors.New("no final cache")
}
return *final, nil
}
func (client *storageRESTClient) SetFormatData(b []byte) {
if client.IsOnline() {
client.formatMutex.Lock()
client.formatData = b
client.formatMutex.Unlock()
}
}
func (client *storageRESTClient) GetDiskID() (string, error) {
if !client.IsOnline() {
// make sure to check if the disk is offline, since the underlying
// value is cached we should attempt to invalidate it if such calls
// were attempted. This can lead to false success under certain conditions
// - this change attempts to avoid stale information if the underlying
// transport is already down.
return "", errDiskNotFound
}
// This call should never be over the network, this is always
// a cached value - caller should make sure to use this
// function on a fresh disk or make sure to look at the error
// from a different networked call to validate the GetDiskID()
return client.diskID, nil
}
func (client *storageRESTClient) SetDiskID(id string) {
client.diskID = id
}
func (client *storageRESTClient) DiskInfo(ctx context.Context, opts DiskInfoOptions) (info DiskInfo, err error) {
if !client.IsOnline() {
// make sure to check if the disk is offline, since the underlying
// value is cached we should attempt to invalidate it if such calls
// were attempted. This can lead to false success under certain conditions
// - this change attempts to avoid stale information if the underlying
// transport is already down.
return info, errDiskNotFound
}
// if 'NoOp' we do not cache the value.
if opts.NoOp {
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
opts.DiskID = client.diskID
infop, err := storageDiskInfoRPC.Call(ctx, client.gridConn, &opts)
if err != nil {
return info, toStorageErr(err)
}
info = *infop
if info.Error != "" {
return info, toStorageErr(errors.New(info.Error))
}
return info, nil
} // In all other cases cache the value upto 1sec.
client.diskInfoCache.InitOnce(time.Second,
cachevalue.Opts{CacheError: true},
func() (info DiskInfo, err error) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
nopts := DiskInfoOptions{DiskID: client.diskID, Metrics: true}
infop, err := storageDiskInfoRPC.Call(ctx, client.gridConn, &nopts)
if err != nil {
return info, toStorageErr(err)
}
info = *infop
if info.Error != "" {
return info, toStorageErr(errors.New(info.Error))
}
return info, nil
},
)
return client.diskInfoCache.Get()
}
// MakeVolBulk - create multiple volumes in a bulk operation.
func (client *storageRESTClient) MakeVolBulk(ctx context.Context, volumes ...string) (err error) {
return errInvalidArgument
}
// MakeVol - create a volume on a remote disk.
func (client *storageRESTClient) MakeVol(ctx context.Context, volume string) (err error) {
return errInvalidArgument
}
// ListVols - List all volumes on a remote disk.
func (client *storageRESTClient) ListVols(ctx context.Context) (vols []VolInfo, err error) {
return nil, errInvalidArgument
}
// StatVol - get volume info over the network.
func (client *storageRESTClient) StatVol(ctx context.Context, volume string) (vol VolInfo, err error) {
v, err := storageStatVolRPC.Call(ctx, client.gridConn, grid.NewMSSWith(map[string]string{
storageRESTDiskID: client.diskID,
storageRESTVolume: volume,
}))
if err != nil {
return vol, toStorageErr(err)
}
vol = *v
// Performs shallow copy, so we can reuse.
storageStatVolRPC.PutResponse(v)
return vol, nil
}
// DeleteVol - Deletes a volume over the network.
func (client *storageRESTClient) DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error) {
return errInvalidArgument
}
// AppendFile - append to a file.
func (client *storageRESTClient) AppendFile(ctx context.Context, volume string, path string, buf []byte) error {
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
reader := bytes.NewReader(buf)
respBody, err := client.call(ctx, storageRESTMethodAppendFile, values, reader, -1)
defer xhttp.DrainBody(respBody)
return err
}
func (client *storageRESTClient) CreateFile(ctx context.Context, origvolume, volume, path string, size int64, reader io.Reader) error {
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
values.Set(storageRESTLength, strconv.Itoa(int(size)))
values.Set(storageRESTOrigVolume, origvolume)
respBody, err := client.call(ctx, storageRESTMethodCreateFile, values, io.NopCloser(reader), size)
defer xhttp.DrainBody(respBody)
if err != nil {
return err
}
_, err = waitForHTTPResponse(respBody)
return toStorageErr(err)
}
func (client *storageRESTClient) WriteMetadata(ctx context.Context, origvolume, volume, path string, fi FileInfo) error {
_, err := storageWriteMetadataRPC.Call(ctx, client.gridConn, &MetadataHandlerParams{
DiskID: client.diskID,
OrigVolume: origvolume,
Volume: volume,
FilePath: path,
FI: fi,
})
return toStorageErr(err)
}
func (client *storageRESTClient) UpdateMetadata(ctx context.Context, volume, path string, fi FileInfo, opts UpdateMetadataOpts) error {
_, err := storageUpdateMetadataRPC.Call(ctx, client.gridConn, &MetadataHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
UpdateOpts: opts,
FI: fi,
})
return toStorageErr(err)
}
func (client *storageRESTClient) DeleteVersion(ctx context.Context, volume, path string, fi FileInfo, forceDelMarker bool, opts DeleteOptions) (err error) {
_, err = storageDeleteVersionRPC.Call(ctx, client.gridConn, &DeleteVersionHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
ForceDelMarker: forceDelMarker,
FI: fi,
Opts: opts,
})
return toStorageErr(err)
}
// WriteAll - write all data to a file.
func (client *storageRESTClient) WriteAll(ctx context.Context, volume string, path string, b []byte) error {
// Specific optimization to avoid re-read from the drives for `format.json`
// in-case the caller is a network operation.
if volume == minioMetaBucket && path == formatConfigFile {
client.SetFormatData(b)
}
_, err := storageWriteAllRPC.Call(ctx, client.gridConn, &WriteAllHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
Buf: b,
})
return toStorageErr(err)
}
// CheckParts - stat all file parts.
func (client *storageRESTClient) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) error {
_, err := storageCheckPartsRPC.Call(ctx, client.gridConn, &CheckPartsHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
FI: fi,
})
return toStorageErr(err)
}
// RenameData - rename source path to destination path atomically, metadata and data file.
func (client *storageRESTClient) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string, opts RenameOptions) (sign uint64, err error) {
resp, err := storageRenameDataRPC.Call(ctx, client.gridConn, &RenameDataHandlerParams{
DiskID: client.diskID,
SrcVolume: srcVolume,
SrcPath: srcPath,
DstPath: dstPath,
DstVolume: dstVolume,
FI: fi,
Opts: opts,
})
if err != nil {
return 0, toStorageErr(err)
}
defer storageRenameDataRPC.PutResponse(resp)
return resp.Signature, nil
}
// where we keep old *Readers
var readMsgpReaderPool = sync.Pool{New: func() interface{} { return &msgp.Reader{} }}
// mspNewReader returns a *Reader that reads from the provided reader.
// The reader will be buffered.
// Return with readMsgpReaderPoolPut when done.
func msgpNewReader(r io.Reader) *msgp.Reader {
p := readMsgpReaderPool.Get().(*msgp.Reader)
if p.R == nil {
p.R = xbufio.NewReaderSize(r, 4<<10)
} else {
p.R.Reset(r)
}
return p
}
// readMsgpReaderPoolPut can be used to reuse a *msgp.Reader.
func readMsgpReaderPoolPut(r *msgp.Reader) {
if r != nil {
readMsgpReaderPool.Put(r)
}
}
func (client *storageRESTClient) ReadVersion(ctx context.Context, origvolume, volume, path, versionID string, opts ReadOptions) (fi FileInfo, err error) {
// Use websocket when not reading data.
if !opts.ReadData {
resp, err := storageReadVersionRPC.Call(ctx, client.gridConn, grid.NewMSSWith(map[string]string{
storageRESTDiskID: client.diskID,
storageRESTOrigVolume: origvolume,
storageRESTVolume: volume,
storageRESTFilePath: path,
storageRESTVersionID: versionID,
storageRESTReadData: strconv.FormatBool(opts.ReadData),
storageRESTHealing: strconv.FormatBool(opts.Healing),
}))
if err != nil {
return fi, toStorageErr(err)
}
return *resp, nil
}
values := make(url.Values)
values.Set(storageRESTOrigVolume, origvolume)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
values.Set(storageRESTVersionID, versionID)
values.Set(storageRESTReadData, strconv.FormatBool(opts.ReadData))
values.Set(storageRESTHealing, strconv.FormatBool(opts.Healing))
respBody, err := client.call(ctx, storageRESTMethodReadVersion, values, nil, -1)
if err != nil {
return fi, err
}
defer xhttp.DrainBody(respBody)
dec := msgpNewReader(respBody)
defer readMsgpReaderPoolPut(dec)
err = fi.DecodeMsg(dec)
return fi, err
}
// ReadXL - reads all contents of xl.meta of a file.
func (client *storageRESTClient) ReadXL(ctx context.Context, volume string, path string, readData bool) (rf RawFileInfo, err error) {
// Use websocket when not reading data.
if !readData {
resp, err := storageReadXLRPC.Call(ctx, client.gridConn, grid.NewMSSWith(map[string]string{
storageRESTDiskID: client.diskID,
storageRESTVolume: volume,
storageRESTFilePath: path,
storageRESTReadData: "false",
}))
if err != nil {
return rf, toStorageErr(err)
}
return *resp, nil
}
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
values.Set(storageRESTReadData, strconv.FormatBool(readData))
respBody, err := client.call(ctx, storageRESTMethodReadXL, values, nil, -1)
if err != nil {
return rf, toStorageErr(err)
}
defer xhttp.DrainBody(respBody)
dec := msgpNewReader(respBody)
defer readMsgpReaderPoolPut(dec)
err = rf.DecodeMsg(dec)
return rf, err
}
// ReadAll - reads all contents of a file.
func (client *storageRESTClient) ReadAll(ctx context.Context, volume string, path string) ([]byte, error) {
// Specific optimization to avoid re-read from the drives for `format.json`
// in-case the caller is a network operation.
if volume == minioMetaBucket && path == formatConfigFile {
client.formatMutex.RLock()
formatData := make([]byte, len(client.formatData))
copy(formatData, client.formatData)
client.formatMutex.RUnlock()
if len(formatData) > 0 {
return formatData, nil
}
}
gridBytes, err := storageReadAllRPC.Call(ctx, client.gridConn, &ReadAllHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
})
if err != nil {
return nil, toStorageErr(err)
}
return *gridBytes, nil
}
// ReadFileStream - returns a reader for the requested file.
func (client *storageRESTClient) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, 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(int(length)))
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 xhttp.DrainBody(respBody)
n, err := io.ReadFull(respBody, buf)
return int64(n), toStorageErr(err)
}
// ListDir - lists a directory.
func (client *storageRESTClient) ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) (entries []string, err error) {
values := grid.NewMSS()
values.Set(storageRESTVolume, volume)
values.Set(storageRESTDirPath, dirPath)
values.Set(storageRESTCount, strconv.Itoa(count))
values.Set(storageRESTOrigVolume, origvolume)
values.Set(storageRESTDiskID, client.diskID)
st, err := storageListDirRPC.Call(ctx, client.gridConn, values)
if err != nil {
return nil, toStorageErr(err)
}
err = st.Results(func(resp *ListDirResult) error {
entries = resp.Entries
return nil
})
return entries, toStorageErr(err)
}
// DeleteFile - deletes a file.
func (client *storageRESTClient) Delete(ctx context.Context, volume string, path string, deleteOpts DeleteOptions) error {
_, err := storageDeleteFileRPC.Call(ctx, client.gridConn, &DeleteFileHandlerParams{
DiskID: client.diskID,
Volume: volume,
FilePath: path,
Opts: deleteOpts,
})
return toStorageErr(err)
}
// DeleteVersions - deletes list of specified versions if present
func (client *storageRESTClient) DeleteVersions(ctx context.Context, volume string, versions []FileInfoVersions, opts DeleteOptions) (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 xhttp.DrainBody(respBody)
if err != nil {
if contextCanceled(ctx) {
err = ctx.Err()
}
for i := range errs {
errs[i] = err
}
return errs
}
reader, err := waitForHTTPResponse(respBody)
if err != nil {
for i := range errs {
errs[i] = toStorageErr(err)
}
return errs
}
dErrResp := &DeleteVersionsErrsResp{}
if err = gob.NewDecoder(reader).Decode(dErrResp); err != nil {
for i := range errs {
errs[i] = toStorageErr(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) {
_, err = storageRenameFileRPC.Call(ctx, client.gridConn, &RenameFileHandlerParams{
DiskID: client.diskID,
SrcVolume: srcVolume,
SrcFilePath: srcPath,
DstVolume: dstVolume,
DstFilePath: dstPath,
})
return toStorageErr(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 xhttp.DrainBody(respBody)
if err != nil {
return err
}
respReader, err := waitForHTTPResponse(respBody)
if err != nil {
return toStorageErr(err)
}
verifyResp := &VerifyFileResp{}
if err = gob.NewDecoder(respReader).Decode(verifyResp); err != nil {
return toStorageErr(err)
}
return toStorageErr(verifyResp.Err)
}
func (client *storageRESTClient) StatInfoFile(ctx context.Context, volume, path string, glob bool) (stat []StatInfo, err error) {
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
values.Set(storageRESTGlob, strconv.FormatBool(glob))
respBody, err := client.call(ctx, storageRESTMethodStatInfoFile, values, nil, -1)
if err != nil {
return stat, err
}
defer xhttp.DrainBody(respBody)
respReader, err := waitForHTTPResponse(respBody)
if err != nil {
return stat, toStorageErr(err)
}
rd := msgpNewReader(respReader)
defer readMsgpReaderPoolPut(rd)
for {
var st StatInfo
err = st.DecodeMsg(rd)
if err != nil {
if errors.Is(err, io.EOF) {
err = nil
}
break
}
stat = append(stat, st)
}
return stat, toStorageErr(err)
}
// ReadMultiple will read multiple files and send each back as response.
// Files are read and returned in the given order.
// The resp channel is closed before the call returns.
// Only a canceled context or network errors returns an error.
func (client *storageRESTClient) ReadMultiple(ctx context.Context, req ReadMultipleReq, resp chan<- ReadMultipleResp) error {
defer xioutil.SafeClose(resp)
body, err := req.MarshalMsg(nil)
if err != nil {
return err
}
respBody, err := client.call(ctx, storageRESTMethodReadMultiple, nil, bytes.NewReader(body), int64(len(body)))
if err != nil {
return err
}
defer xhttp.DrainBody(respBody)
pr, pw := io.Pipe()
go func() {
pw.CloseWithError(waitForHTTPStream(respBody, pw))
}()
mr := msgp.NewReader(pr)
defer readMsgpReaderPoolPut(mr)
for {
var file ReadMultipleResp
if err := file.DecodeMsg(mr); err != nil {
if errors.Is(err, io.EOF) {
err = nil
}
pr.CloseWithError(err)
return toStorageErr(err)
}
select {
case <-ctx.Done():
return ctx.Err()
case resp <- file:
}
}
}
// CleanAbandonedData will read metadata of the object on disk
// and delete any data directories and inline data that isn't referenced in metadata.
func (client *storageRESTClient) CleanAbandonedData(ctx context.Context, volume string, path string) error {
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
respBody, err := client.call(ctx, storageRESTMethodCleanAbandoned, values, nil, -1)
if err != nil {
return err
}
defer xhttp.DrainBody(respBody)
_, err = waitForHTTPResponse(respBody)
return toStorageErr(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, gm *grid.Manager) (*storageRESTClient, error) {
serverURL := &url.URL{
Scheme: endpoint.Scheme,
Host: endpoint.Host,
Path: path.Join(storageRESTPrefix, endpoint.Path, storageRESTVersion),
}
restClient := rest.NewClient(serverURL, globalInternodeTransport, newCachedAuthToken())
if healthCheck {
// Use a separate client to avoid recursive calls.
healthClient := rest.NewClient(serverURL, globalInternodeTransport, newCachedAuthToken())
healthClient.NoMetrics = 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
}
}
conn := gm.Connection(endpoint.GridHost()).Subroute(endpoint.Path)
if conn == nil {
return nil, fmt.Errorf("unable to find connection for %s in targets: %v", endpoint.GridHost(), gm.Targets())
}
return &storageRESTClient{
endpoint: endpoint,
restClient: restClient,
gridConn: conn,
diskInfoCache: cachevalue.New[DiskInfo](),
}, nil
}