mirror of
https://github.com/minio/minio.git
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488 lines
13 KiB
Go
488 lines
13 KiB
Go
// Copyright (c) 2015-2022 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"encoding/gob"
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"errors"
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"net/http"
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"github.com/minio/madmin-go/v3"
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"github.com/minio/minio/internal/logger"
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"github.com/minio/mux"
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"github.com/minio/pkg/v2/sync/errgroup"
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)
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const (
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peerS3Version = "v1" // First implementation
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peerS3VersionPrefix = SlashSeparator + peerS3Version
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peerS3Prefix = minioReservedBucketPath + "/peer-s3"
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peerS3Path = peerS3Prefix + peerS3VersionPrefix
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)
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const (
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peerS3MethodHealth = "/health"
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peerS3MethodMakeBucket = "/make-bucket"
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peerS3MethodGetBucketInfo = "/get-bucket-info"
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peerS3MethodDeleteBucket = "/delete-bucket"
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peerS3MethodListBuckets = "/list-buckets"
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peerS3MethodHealBucket = "/heal-bucket"
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)
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const (
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peerS3Bucket = "bucket"
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peerS3BucketDeleted = "bucket-deleted"
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peerS3BucketForceCreate = "force-create"
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peerS3BucketForceDelete = "force-delete"
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)
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type peerS3Server struct{}
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func (s *peerS3Server) writeErrorResponse(w http.ResponseWriter, err error) {
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w.WriteHeader(http.StatusForbidden)
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w.Write([]byte(err.Error()))
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}
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// IsValid - To authenticate and verify the time difference.
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func (s *peerS3Server) IsValid(w http.ResponseWriter, r *http.Request) bool {
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objAPI := newObjectLayerFn()
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if objAPI == nil {
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s.writeErrorResponse(w, errServerNotInitialized)
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return false
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}
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if err := storageServerRequestValidate(r); err != nil {
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s.writeErrorResponse(w, err)
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return false
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}
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return true
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}
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// HealthHandler - returns true of health
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func (s *peerS3Server) HealthHandler(w http.ResponseWriter, r *http.Request) {
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s.IsValid(w, r)
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}
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func healBucketLocal(ctx context.Context, bucket string, opts madmin.HealOpts) (res madmin.HealResultItem, err error) {
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globalLocalDrivesMu.RLock()
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localDrives := globalLocalDrives
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globalLocalDrivesMu.RUnlock()
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// Initialize sync waitgroup.
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g := errgroup.WithNErrs(len(localDrives))
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// Disk states slices
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beforeState := make([]string, len(localDrives))
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afterState := make([]string, len(localDrives))
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// Make a volume entry on all underlying storage disks.
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for index := range localDrives {
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index := index
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g.Go(func() (serr error) {
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if localDrives[index] == nil {
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beforeState[index] = madmin.DriveStateOffline
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afterState[index] = madmin.DriveStateOffline
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return errDiskNotFound
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}
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beforeState[index] = madmin.DriveStateOk
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afterState[index] = madmin.DriveStateOk
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if bucket == minioReservedBucket {
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return nil
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}
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_, serr = localDrives[index].StatVol(ctx, bucket)
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if serr != nil {
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if serr == errDiskNotFound {
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beforeState[index] = madmin.DriveStateOffline
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afterState[index] = madmin.DriveStateOffline
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return serr
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}
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if serr != errVolumeNotFound {
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beforeState[index] = madmin.DriveStateCorrupt
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afterState[index] = madmin.DriveStateCorrupt
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return serr
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}
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beforeState[index] = madmin.DriveStateMissing
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afterState[index] = madmin.DriveStateMissing
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return serr
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}
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return nil
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}, index)
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}
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errs := g.Wait()
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// Initialize heal result info
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res = madmin.HealResultItem{
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Type: madmin.HealItemBucket,
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Bucket: bucket,
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DiskCount: len(localDrives),
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SetCount: -1, // explicitly set an invalid value -1, for bucket heal scenario
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}
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// mutate only if not a dry-run
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if opts.DryRun {
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return res, nil
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}
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for i := range beforeState {
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res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
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UUID: "",
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Endpoint: localDrives[i].String(),
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State: beforeState[i],
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})
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}
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// check dangling and delete bucket only if its not a meta bucket
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if !isMinioMetaBucketName(bucket) && !isAllBucketsNotFound(errs) && opts.Remove {
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g := errgroup.WithNErrs(len(localDrives))
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for index := range localDrives {
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index := index
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g.Go(func() error {
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if localDrives[index] == nil {
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return errDiskNotFound
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}
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localDrives[index].DeleteVol(ctx, bucket, false)
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return nil
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}, index)
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}
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g.Wait()
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}
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// Create the quorum lost volume only if its nor makred for delete
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if !opts.Remove {
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// Initialize sync waitgroup.
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g = errgroup.WithNErrs(len(localDrives))
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// Make a volume entry on all underlying storage disks.
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for index := range localDrives {
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index := index
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g.Go(func() error {
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if beforeState[index] == madmin.DriveStateMissing {
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err := localDrives[index].MakeVol(ctx, bucket)
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if err == nil {
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afterState[index] = madmin.DriveStateOk
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}
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return err
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}
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return errs[index]
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}, index)
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}
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errs = g.Wait()
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}
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for i := range afterState {
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res.After.Drives = append(res.After.Drives, madmin.HealDriveInfo{
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UUID: "",
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Endpoint: localDrives[i].String(),
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State: afterState[i],
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})
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}
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return res, nil
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}
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func listBucketsLocal(ctx context.Context, opts BucketOptions) (buckets []BucketInfo, err error) {
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globalLocalDrivesMu.RLock()
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localDrives := globalLocalDrives
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globalLocalDrivesMu.RUnlock()
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quorum := (len(localDrives) / 2)
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buckets = make([]BucketInfo, 0, 32)
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healBuckets := map[string]VolInfo{}
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// lists all unique buckets across drives.
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if err := listAllBuckets(ctx, localDrives, healBuckets, quorum); err != nil {
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return nil, err
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}
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// include deleted buckets in listBuckets output
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deletedBuckets := map[string]VolInfo{}
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if opts.Deleted {
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// lists all deleted buckets across drives.
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if err := listDeletedBuckets(ctx, localDrives, deletedBuckets, quorum); err != nil {
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return nil, err
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}
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}
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for _, v := range healBuckets {
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bi := BucketInfo{
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Name: v.Name,
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Created: v.Created,
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}
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if vi, ok := deletedBuckets[v.Name]; ok {
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bi.Deleted = vi.Created
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}
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buckets = append(buckets, bi)
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}
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for _, v := range deletedBuckets {
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if _, ok := healBuckets[v.Name]; !ok {
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buckets = append(buckets, BucketInfo{
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Name: v.Name,
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Deleted: v.Created,
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})
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}
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}
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return buckets, nil
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}
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func getBucketInfoLocal(ctx context.Context, bucket string, opts BucketOptions) (BucketInfo, error) {
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globalLocalDrivesMu.RLock()
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localDrives := globalLocalDrives
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globalLocalDrivesMu.RUnlock()
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g := errgroup.WithNErrs(len(localDrives)).WithConcurrency(32)
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bucketsInfo := make([]BucketInfo, len(localDrives))
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// Make a volume entry on all underlying storage disks.
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for index := range localDrives {
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index := index
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g.Go(func() error {
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if localDrives[index] == nil {
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return errDiskNotFound
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}
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volInfo, err := localDrives[index].StatVol(ctx, bucket)
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if err != nil {
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if opts.Deleted {
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dvi, derr := localDrives[index].StatVol(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix, deletedBucketsPrefix, bucket))
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if derr != nil {
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return err
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}
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bucketsInfo[index] = BucketInfo{Name: bucket, Deleted: dvi.Created}
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return nil
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}
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return err
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}
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bucketsInfo[index] = BucketInfo{Name: bucket, Created: volInfo.Created}
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return nil
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}, index)
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}
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errs := g.Wait()
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if err := reduceReadQuorumErrs(ctx, errs, bucketOpIgnoredErrs, (len(localDrives) / 2)); err != nil {
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return BucketInfo{}, err
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}
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var bucketInfo BucketInfo
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for i, err := range errs {
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if err == nil {
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bucketInfo = bucketsInfo[i]
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break
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}
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}
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return bucketInfo, nil
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}
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func deleteBucketLocal(ctx context.Context, bucket string, opts DeleteBucketOptions) error {
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globalLocalDrivesMu.RLock()
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localDrives := globalLocalDrives
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globalLocalDrivesMu.RUnlock()
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g := errgroup.WithNErrs(len(localDrives)).WithConcurrency(32)
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// Make a volume entry on all underlying storage disks.
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for index := range localDrives {
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index := index
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g.Go(func() error {
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if localDrives[index] == nil {
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return errDiskNotFound
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}
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return localDrives[index].DeleteVol(ctx, bucket, opts.Force)
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}, index)
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}
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var recreate bool
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errs := g.Wait()
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for index, err := range errs {
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if errors.Is(err, errVolumeNotEmpty) {
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recreate = true
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}
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if err == nil && recreate {
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// ignore any errors
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localDrives[index].MakeVol(ctx, bucket)
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}
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}
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// Since we recreated buckets and error was `not-empty`, return not-empty.
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if recreate {
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return errVolumeNotEmpty
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} // for all other errors reduce by write quorum.
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return reduceWriteQuorumErrs(ctx, errs, bucketOpIgnoredErrs, (len(localDrives)/2)+1)
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}
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func makeBucketLocal(ctx context.Context, bucket string, opts MakeBucketOptions) error {
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globalLocalDrivesMu.RLock()
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localDrives := globalLocalDrives
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globalLocalDrivesMu.RUnlock()
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g := errgroup.WithNErrs(len(localDrives)).WithConcurrency(32)
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// Make a volume entry on all underlying storage disks.
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for index := range localDrives {
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index := index
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g.Go(func() error {
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if localDrives[index] == nil {
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return errDiskNotFound
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}
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err := localDrives[index].MakeVol(ctx, bucket)
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if opts.ForceCreate && errors.Is(err, errVolumeExists) {
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// No need to return error when force create was
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// requested.
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return nil
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}
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return err
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}, index)
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}
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errs := g.Wait()
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return reduceWriteQuorumErrs(ctx, errs, bucketOpIgnoredErrs, (len(localDrives)/2)+1)
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}
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func (s *peerS3Server) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
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if !s.IsValid(w, r) {
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return
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}
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bucketDeleted := r.Form.Get(peerS3BucketDeleted) == "true"
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buckets, err := listBucketsLocal(r.Context(), BucketOptions{
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Deleted: bucketDeleted,
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})
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if err != nil {
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s.writeErrorResponse(w, err)
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return
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}
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logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(buckets))
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}
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func (s *peerS3Server) HealBucketHandler(w http.ResponseWriter, r *http.Request) {
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if !s.IsValid(w, r) {
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return
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}
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bucketDeleted := r.Form.Get(peerS3BucketDeleted) == "true"
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bucket := r.Form.Get(peerS3Bucket)
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if isMinioMetaBucket(bucket) {
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s.writeErrorResponse(w, errInvalidArgument)
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return
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}
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res, err := healBucketLocal(r.Context(), bucket, madmin.HealOpts{
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Remove: bucketDeleted,
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})
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if err != nil {
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s.writeErrorResponse(w, err)
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return
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}
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logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(res))
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}
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// GetBucketInfoHandler implements peer BuckeInfo call, returns bucket create date.
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func (s *peerS3Server) GetBucketInfoHandler(w http.ResponseWriter, r *http.Request) {
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if !s.IsValid(w, r) {
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return
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}
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bucket := r.Form.Get(peerS3Bucket)
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bucketDeleted := r.Form.Get(peerS3BucketDeleted) == "true"
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bucketInfo, err := getBucketInfoLocal(r.Context(), bucket, BucketOptions{
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Deleted: bucketDeleted,
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})
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if err != nil {
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s.writeErrorResponse(w, err)
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return
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}
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logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(bucketInfo))
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}
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// DeleteBucketHandler implements peer delete bucket call.
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func (s *peerS3Server) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
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if !s.IsValid(w, r) {
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return
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}
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bucket := r.Form.Get(peerS3Bucket)
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if isMinioMetaBucket(bucket) {
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s.writeErrorResponse(w, errInvalidArgument)
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return
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}
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forceDelete := r.Form.Get(peerS3BucketForceDelete) == "true"
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err := deleteBucketLocal(r.Context(), bucket, DeleteBucketOptions{
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Force: forceDelete,
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})
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if err != nil {
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s.writeErrorResponse(w, err)
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return
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}
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}
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// MakeBucketHandler implements peer create bucket call.
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func (s *peerS3Server) MakeBucketHandler(w http.ResponseWriter, r *http.Request) {
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if !s.IsValid(w, r) {
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return
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}
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bucket := r.Form.Get(peerS3Bucket)
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forceCreate := r.Form.Get(peerS3BucketForceCreate) == "true"
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err := makeBucketLocal(r.Context(), bucket, MakeBucketOptions{
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ForceCreate: forceCreate,
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})
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if err != nil {
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s.writeErrorResponse(w, err)
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return
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}
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}
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// registerPeerS3Handlers - register peer s3 router.
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func registerPeerS3Handlers(router *mux.Router) {
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server := &peerS3Server{}
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subrouter := router.PathPrefix(peerS3Prefix).Subrouter()
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h := func(f http.HandlerFunc) http.HandlerFunc {
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return collectInternodeStats(httpTraceHdrs(f))
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}
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodHealth).HandlerFunc(h(server.HealthHandler))
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodMakeBucket).HandlerFunc(h(server.MakeBucketHandler))
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodDeleteBucket).HandlerFunc(h(server.DeleteBucketHandler))
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodGetBucketInfo).HandlerFunc(h(server.GetBucketInfoHandler))
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodListBuckets).HandlerFunc(h(server.ListBucketsHandler))
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subrouter.Methods(http.MethodPost).Path(peerS3VersionPrefix + peerS3MethodHealBucket).HandlerFunc(h(server.HealBucketHandler))
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}
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