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a880283593
this is to detect situations of corruption disk format etc errors quickly and keep the disk online in such scenarios for requests to fail appropriately.
685 lines
19 KiB
Go
685 lines
19 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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"crypto/tls"
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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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"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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)
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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)
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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 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 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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}
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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(method string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
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if !client.IsOnline() {
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return nil, errDiskNotFound
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}
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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(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) CrawlAndGetDataUsage(ctx context.Context, cache dataUsageCache) (dataUsageCache, error) {
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b := cache.serialize()
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respBody, err := client.call(storageRESTMethodCrawlAndGetDataUsage,
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url.Values{},
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bytes.NewBuffer(b), int64(len(b)))
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defer http.DrainBody(respBody)
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if err != nil {
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return cache, err
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}
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reader, err := waitForHTTPResponse(respBody)
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if err != nil {
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return cache, err
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}
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var newCache dataUsageCache
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return newCache, newCache.deserialize(reader)
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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() (info DiskInfo, err error) {
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respBody, err := client.call(storageRESTMethodDiskInfo, 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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err = gob.NewDecoder(respBody).Decode(&info)
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if 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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// MakeVolBulk - create multiple volumes in a bulk operation.
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func (client *storageRESTClient) MakeVolBulk(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(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(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(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() (volinfo []VolInfo, err error) {
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respBody, err := client.call(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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err = gob.NewDecoder(respBody).Decode(&volinfo)
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return volinfo, err
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}
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// StatVol - get volume info over the network.
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func (client *storageRESTClient) StatVol(volume string) (volInfo 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(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 = gob.NewDecoder(respBody).Decode(&volInfo)
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return volInfo, err
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}
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// DeleteVol - Deletes a volume over the network.
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func (client *storageRESTClient) DeleteVol(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(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(volume, path string, buffer []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(buffer)
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respBody, err := client.call(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(volume, path string, length int64, r 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(length)))
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respBody, err := client.call(storageRESTMethodCreateFile, values, ioutil.NopCloser(r), length)
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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(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 := gob.NewEncoder(&reader).Encode(fi); err != nil {
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return err
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}
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respBody, err := client.call(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) DeleteVersion(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 buffer bytes.Buffer
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if err := gob.NewEncoder(&buffer).Encode(fi); err != nil {
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return err
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}
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respBody, err := client.call(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(volume, path string, 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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respBody, err := client.call(storageRESTMethodWriteAll, 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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// CheckFile - stat a file metadata.
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func (client *storageRESTClient) CheckFile(volume, 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(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(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 := gob.NewEncoder(&reader).Encode(fi); err != nil {
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return err
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}
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respBody, err := client.call(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(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(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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func (client *storageRESTClient) ReadVersion(volume, path, versionID string) (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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respBody, err := client.call(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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err = gob.NewDecoder(respBody).Decode(&fi)
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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(volume, 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(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(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(storageRESTMethodReadFileStream, 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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return respBody, nil
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}
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// ReadFile - reads section of a file.
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func (client *storageRESTClient) ReadFile(volume, path string, offset int64, buffer []byte, verifier *BitrotVerifier) (int64, 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(len(buffer)))
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if verifier != nil {
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values.Set(storageRESTBitrotAlgo, verifier.algorithm.String())
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values.Set(storageRESTBitrotHash, hex.EncodeToString(verifier.sum))
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} else {
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values.Set(storageRESTBitrotAlgo, "")
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values.Set(storageRESTBitrotHash, "")
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}
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respBody, err := client.call(storageRESTMethodReadFile, values, nil, -1)
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if err != nil {
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return 0, err
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}
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defer http.DrainBody(respBody)
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n, err := io.ReadFull(respBody, buffer)
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return int64(n), err
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}
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func (client *storageRESTClient) WalkSplunk(volume, dirPath, marker string, endWalkCh <-chan struct{}) (chan FileInfo, error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTDirPath, dirPath)
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values.Set(storageRESTMarkerPath, marker)
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respBody, err := client.call(storageRESTMethodWalkSplunk, 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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ch := make(chan FileInfo)
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go func() {
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defer close(ch)
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defer http.DrainBody(respBody)
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decoder := gob.NewDecoder(respBody)
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for {
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var fi FileInfo
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if gerr := decoder.Decode(&fi); gerr != nil {
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// Upon error return
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return
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}
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select {
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case ch <- fi:
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case <-endWalkCh:
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return
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}
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}
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}()
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return ch, nil
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}
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func (client *storageRESTClient) WalkVersions(volume, dirPath, marker string, recursive bool, endWalkCh <-chan struct{}) (chan FileInfoVersions, error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTDirPath, dirPath)
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values.Set(storageRESTMarkerPath, marker)
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values.Set(storageRESTRecursive, strconv.FormatBool(recursive))
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respBody, err := client.call(storageRESTMethodWalkVersions, 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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ch := make(chan FileInfoVersions)
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go func() {
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defer close(ch)
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defer http.DrainBody(respBody)
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decoder := gob.NewDecoder(respBody)
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for {
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var fi FileInfoVersions
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if gerr := decoder.Decode(&fi); gerr != nil {
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// Upon error return
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if gerr != io.EOF {
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logger.LogIf(context.Background(), gerr)
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}
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return
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}
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select {
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case ch <- fi:
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case <-endWalkCh:
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return
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}
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}
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}()
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return ch, nil
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}
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func (client *storageRESTClient) Walk(volume, dirPath, marker string, recursive bool, endWalkCh <-chan struct{}) (chan FileInfo, error) {
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values := make(url.Values)
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values.Set(storageRESTVolume, volume)
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values.Set(storageRESTDirPath, dirPath)
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values.Set(storageRESTMarkerPath, marker)
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values.Set(storageRESTRecursive, strconv.FormatBool(recursive))
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respBody, err := client.call(storageRESTMethodWalk, 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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ch := make(chan FileInfo)
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go func() {
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defer close(ch)
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defer http.DrainBody(respBody)
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decoder := gob.NewDecoder(respBody)
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for {
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var fi FileInfo
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if gerr := decoder.Decode(&fi); gerr != nil {
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// Upon error return
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return
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}
|
|
select {
|
|
case ch <- fi:
|
|
case <-endWalkCh:
|
|
return
|
|
}
|
|
|
|
}
|
|
}()
|
|
|
|
return ch, nil
|
|
}
|
|
|
|
// ListDir - lists a directory.
|
|
func (client *storageRESTClient) ListDir(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(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) DeleteFile(volume, path string) error {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTFilePath, path)
|
|
respBody, err := client.call(storageRESTMethodDeleteFile, values, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
return err
|
|
}
|
|
|
|
// DeleteVersions - deletes list of specified versions if present
|
|
func (client *storageRESTClient) DeleteVersions(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 := gob.NewEncoder(&buffer)
|
|
for _, version := range versions {
|
|
encoder.Encode(&version)
|
|
}
|
|
|
|
errs = make([]error, len(versions))
|
|
|
|
respBody, err := client.call(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(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(storageRESTMethodRenameFile, values, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
return err
|
|
}
|
|
|
|
func (client *storageRESTClient) VerifyFile(volume, path string, fi FileInfo) error {
|
|
values := make(url.Values)
|
|
values.Set(storageRESTVolume, volume)
|
|
values.Set(storageRESTFilePath, path)
|
|
|
|
var reader bytes.Buffer
|
|
if err := gob.NewEncoder(&reader).Encode(fi); err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(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) *storageRESTClient {
|
|
serverURL := &url.URL{
|
|
Scheme: endpoint.Scheme,
|
|
Host: endpoint.Host,
|
|
Path: path.Join(storageRESTPrefix, endpoint.Path, storageRESTVersion),
|
|
}
|
|
|
|
var tlsConfig *tls.Config
|
|
if globalIsSSL {
|
|
tlsConfig = &tls.Config{
|
|
ServerName: endpoint.Hostname(),
|
|
RootCAs: globalRootCAs,
|
|
NextProtos: []string{"http/1.1"}, // Force http1.1
|
|
}
|
|
}
|
|
|
|
trFn := newCustomHTTPTransport(tlsConfig, rest.DefaultRESTTimeout)
|
|
restClient := rest.NewClient(serverURL, trFn, newAuthToken)
|
|
restClient.HealthCheckInterval = 500 * time.Millisecond
|
|
restClient.HealthCheckFn = func() bool {
|
|
ctx, cancel := context.WithTimeout(GlobalContext, restClient.HealthCheckTimeout)
|
|
// Instantiate a new rest client for healthcheck
|
|
// to avoid recursive healthCheckFn()
|
|
respBody, err := rest.NewClient(serverURL, trFn, newAuthToken).CallWithContext(ctx, storageRESTMethodHealth, nil, nil, -1)
|
|
xhttp.DrainBody(respBody)
|
|
cancel()
|
|
return !errors.Is(err, context.DeadlineExceeded) && toStorageErr(err) != errDiskNotFound
|
|
}
|
|
|
|
return &storageRESTClient{endpoint: endpoint, restClient: restClient}
|
|
}
|