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compact: add schedule-delete and delete-delay
Signed-off-by: khyatisoneji <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| // Copyright (c) The Thanos Authors. | ||
| // Licensed under the Apache License 2.0. | ||
|
|
||
| package metadata | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "path" | ||
|
|
||
| "github.com/go-kit/kit/log" | ||
| "github.com/oklog/ulid" | ||
| "github.com/pkg/errors" | ||
| "github.com/thanos-io/thanos/pkg/objstore" | ||
| "github.com/thanos-io/thanos/pkg/runutil" | ||
| ) | ||
|
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| const ( | ||
| // DeletionMarkFilename is the known json filename to store details about when block is marked for deletion. | ||
| DeletionMarkFilename = "deletion-mark.json" | ||
|
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| // DeletionMarkVersion1 is a enumeration of deletion-mark versions supported by Thanos. | ||
| DeletionMarkVersion1 = iota + 1 | ||
| ) | ||
|
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| // ErrorDeletionMarkNotFound is the error when deletion-mark.json file is not found. | ||
| var ErrorDeletionMarkNotFound = errors.New("deletion-mark.json not found") | ||
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| // DeletionMark stores block id and when block was marked for deletion. | ||
| type DeletionMark struct { | ||
| // ID of the tsdb block. | ||
| ID ulid.ULID `json:"id"` | ||
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| // DeletionTime is a unix timestamp of when the block was marked to be deleted. | ||
| DeletionTime int64 `json:"deletion_time"` | ||
|
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| // Version of the file. | ||
| Version int `json:"version"` | ||
| } | ||
|
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| // ReadDeletionMark reads the given compactor meta from <dir>/deletion-mark.json in bucket. | ||
| func ReadDeletionMark(ctx context.Context, bkt objstore.Bucket, logger log.Logger, dir string) (*DeletionMark, error) { | ||
| deletionMarkFile := path.Join(dir, DeletionMarkFilename) | ||
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| r, err := bkt.Get(ctx, deletionMarkFile) | ||
| if bkt.IsObjNotFoundErr(err) { | ||
| return nil, ErrorDeletionMarkNotFound | ||
| } | ||
| if err != nil { | ||
| return nil, errors.Wrapf(err, "get file: %v", deletionMarkFile) | ||
| } | ||
|
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| defer runutil.CloseWithLogOnErr(logger, r, "close bkt deletion-mark reader") | ||
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| metaContent, err := ioutil.ReadAll(r) | ||
| if err != nil { | ||
| return nil, errors.Wrapf(err, "read file: %v", deletionMarkFile) | ||
| } | ||
|
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| deletionMark := DeletionMark{} | ||
| if err := json.Unmarshal(metaContent, &deletionMark); err != nil { | ||
| return nil, errors.Wrap(err, "unmarshal compactor meta") | ||
| } | ||
|
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| if deletionMark.Version != DeletionMarkVersion1 { | ||
| return nil, errors.Errorf("unexpected deletion-mark file version %d", deletionMark.Version) | ||
| } | ||
|
|
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| return &deletionMark, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| // Copyright (c) The Thanos Authors. | ||
| // Licensed under the Apache License 2.0. | ||
|
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| package compact | ||
|
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| import ( | ||
| "context" | ||
| "time" | ||
|
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| "github.com/go-kit/kit/log" | ||
| "github.com/go-kit/kit/log/level" | ||
| "github.com/pkg/errors" | ||
| "github.com/thanos-io/thanos/pkg/block" | ||
| "github.com/thanos-io/thanos/pkg/block/metadata" | ||
| "github.com/thanos-io/thanos/pkg/objstore" | ||
| ) | ||
|
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| // BlocksCleaner is a struct that deletes blocks from bucket | ||
| // which are marked for deletion. | ||
| type BlocksCleaner struct { | ||
| logger log.Logger | ||
| deleteDelay time.Duration | ||
| bkt objstore.Bucket | ||
| } | ||
|
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| // NewBlocksCleaner creates a new BlocksCleaner. | ||
| func NewBlocksCleaner(logger log.Logger, bkt objstore.Bucket, deleteDelay time.Duration) *BlocksCleaner { | ||
| return &BlocksCleaner{ | ||
| logger: logger, | ||
| deleteDelay: deleteDelay, | ||
| bkt: bkt, | ||
| } | ||
| } | ||
|
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| // DeleteMarkedBlocks reads compactor-meta.json file in block to check when the block was marked for deletion and | ||
| // deletes the block deleteDelay duration after block is marked for deletion. | ||
| func (s *BlocksCleaner) DeleteMarkedBlocks(ctx context.Context) error { | ||
| return s.bkt.Iter(ctx, "", func(name string) error { | ||
| id, ok := block.IsBlockDir(name) | ||
| if !ok { | ||
| return nil | ||
| } | ||
|
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| deletionMark, err := metadata.ReadDeletionMark(ctx, s.bkt, s.logger, id.String()) | ||
| if err != nil { | ||
| if errors.Cause(err) != metadata.ErrorDeletionMarkNotFound { | ||
| return errors.Wrap(err, "read file: %s") | ||
| } | ||
| } | ||
|
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| if time.Since(time.Unix(deletionMark.DeletionTime, 0)) > s.deleteDelay { | ||
| if err := block.Delete(ctx, s.logger, s.bkt, deletionMark.ID); err != nil { | ||
| return errors.Wrap(err, "delete block") | ||
| } | ||
| level.Info(s.logger).Log("msg", "blocks cleaner: deleting block", "id", id) | ||
| } | ||
|
|
||
| return nil | ||
| }) | ||
| } |
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