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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 +1,112 @@ | ||
| // Copyright (c) The Thanos Authors. | ||
| // Licensed under the Apache License 2.0. | ||
|
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||
| package compact | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/go-kit/kit/log" | ||
| "github.com/go-kit/kit/log/level" | ||
| "github.com/oklog/ulid" | ||
| "github.com/pkg/errors" | ||
| "github.com/thanos-io/thanos/pkg/block" | ||
| "github.com/thanos-io/thanos/pkg/objstore" | ||
| "github.com/thanos-io/thanos/pkg/runutil" | ||
| ) | ||
|
|
||
| // ScheduleDeleteFilename is file to store compactor metadata | ||
| // about when the block is scheduled to be deleted. | ||
| const ScheduleDeleteFilename = "compactor-meta.json" | ||
|
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| // CompactorMeta stores block id and when block was marked for deletion. | ||
| type CompactorMeta struct { | ||
| ID ulid.ULID `json:"id"` | ||
| DeletionTime int64 `json:"deletion_time"` | ||
| } | ||
|
|
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| // ScheduleBlockDelete marks the block to be deleted. | ||
| type ScheduleBlockDelete struct { | ||
| dir string | ||
| logger log.Logger | ||
| deleteDelay time.Duration | ||
| bkt objstore.Bucket | ||
| } | ||
|
|
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| // NewScheduleBlockDelete creates a new ScheduleBlockDelete. | ||
| func NewScheduleBlockDelete(logger log.Logger, dir string, bkt objstore.Bucket, deleteDelay time.Duration) *ScheduleBlockDelete { | ||
| return &ScheduleBlockDelete{ | ||
| dir: dir, | ||
| logger: logger, | ||
| deleteDelay: deleteDelay, | ||
| bkt: bkt, | ||
| } | ||
| } | ||
|
|
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| // ScheduleDelete deletes blocks from bucket | ||
| // deleteDelay duration after block is marked for deletion. | ||
| func (s *ScheduleBlockDelete) ScheduleDelete(ctx context.Context) error { | ||
| return filepath.Walk(s.dir, func(path string, info os.FileInfo, err error) error { | ||
| if strings.HasSuffix(path, ScheduleDeleteFilename) { | ||
| compactorMetaBytes, err := ioutil.ReadFile(path) | ||
| if err != nil { | ||
| return errors.Wrap(err, "read compactor meta") | ||
| } | ||
|
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| compactorMeta := CompactorMeta{} | ||
|
|
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| if err := json.Unmarshal([]byte(compactorMetaBytes), &compactorMeta); err != nil { | ||
| return errors.Wrap(err, "unmarshal compactor meta") | ||
| } | ||
|
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| if time.Now().Unix()-compactorMeta.DeletionTime > s.deleteDelay.Milliseconds() { | ||
| if err := block.Delete(ctx, s.logger, s.bkt, compactorMeta.ID); err != nil { | ||
| return errors.Wrap(err, "delete block") | ||
| } | ||
|
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| if err := os.RemoveAll(filepath.Join(s.dir, compactorMeta.ID.String())); err != nil { | ||
| return errors.Wrap(err, "delete compactor-meta.json") | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| }) | ||
| } | ||
|
|
||
| // MarkBlockForDeletion creates a file | ||
| // which stores information about when the block was marked for deletion. | ||
| func (s *ScheduleBlockDelete) MarkBlockForDeletion(id ulid.ULID) error { | ||
| path := filepath.Join(s.dir, id.String(), ScheduleDeleteFilename) | ||
| if _, err := os.Stat(path); err == nil { | ||
| level.Warn(s.logger).Log("msg", "compactor-meta already exists for block id", id.String()) | ||
| return nil | ||
| } | ||
| compactorMeta := &CompactorMeta{ | ||
| ID: id, | ||
| DeletionTime: time.Now().Unix(), | ||
| } | ||
|
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| f, err := os.Create(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| enc := json.NewEncoder(f) | ||
| enc.SetIndent("", "\t") | ||
|
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| if err := enc.Encode(compactorMeta); err != nil { | ||
| runutil.CloseWithLogOnErr(s.logger, f, "write meta file close") | ||
| return err | ||
| } | ||
| if err := f.Close(); err != nil { | ||
| return err | ||
| } | ||
|
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||
| return nil | ||
| } |