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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -20,3 +20,4 @@ logs | |
| # jetbrains | ||
| .idea | ||
| *.iml | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| package aof | ||
|
|
||
| import ( | ||
| "github.com/hdt3213/godis/config" | ||
| "github.com/hdt3213/godis/datastruct/dict" | ||
| List "github.com/hdt3213/godis/datastruct/list" | ||
| "github.com/hdt3213/godis/datastruct/set" | ||
| SortedSet "github.com/hdt3213/godis/datastruct/sortedset" | ||
| "github.com/hdt3213/godis/interface/database" | ||
| "github.com/hdt3213/godis/lib/logger" | ||
| rdb "github.com/hdt3213/rdb/encoder" | ||
| "github.com/hdt3213/rdb/model" | ||
| "io/ioutil" | ||
| "os" | ||
| "strconv" | ||
| "time" | ||
| ) | ||
|
|
||
| func (handler *Handler) Rewrite2RDB() error { | ||
| ctx, err := handler.startRewrite2RDB() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = handler.rewrite2RDB(ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| rdbFilename := config.Properties.RDBFilename | ||
| if rdbFilename == "" { | ||
| rdbFilename = "dump.rdb" | ||
| } | ||
| err = ctx.tmpFile.Close() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = os.Rename(ctx.tmpFile.Name(), rdbFilename) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (handler *Handler) startRewrite2RDB() (*RewriteCtx, error) { | ||
| handler.pausingAof.Lock() // pausing aof | ||
| defer handler.pausingAof.Unlock() | ||
|
|
||
| err := handler.aofFile.Sync() | ||
| if err != nil { | ||
| logger.Warn("fsync failed") | ||
| return nil, err | ||
| } | ||
|
|
||
| // get current aof file size | ||
| fileInfo, _ := os.Stat(handler.aofFilename) | ||
| filesize := fileInfo.Size() | ||
| // create tmp file | ||
| file, err := ioutil.TempFile("", "*.aof") | ||
| if err != nil { | ||
| logger.Warn("tmp file create failed") | ||
| return nil, err | ||
| } | ||
| return &RewriteCtx{ | ||
| tmpFile: file, | ||
| fileSize: filesize, | ||
| }, nil | ||
| } | ||
|
|
||
| func (handler *Handler) rewrite2RDB(ctx *RewriteCtx) error { | ||
| // load aof tmpFile | ||
| tmpHandler := handler.newRewriteHandler() | ||
| tmpHandler.LoadAof(int(ctx.fileSize)) | ||
| encoder := rdb.NewEncoder(ctx.tmpFile).EnableCompress() | ||
| err := encoder.WriteHeader() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| auxMap := map[string]string{ | ||
| "redis-ver": "6.0.0", | ||
| "redis-bits": "64", | ||
| "aof-preamble": "0", | ||
| "ctime": strconv.FormatInt(time.Now().Unix(), 10), | ||
| } | ||
| for k, v := range auxMap { | ||
| err := encoder.WriteAux(k, v) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| for i := 0; i < config.Properties.Databases; i++ { | ||
| keyCount, ttlCount := tmpHandler.db.GetDBSize(i) | ||
| if keyCount == 0 { | ||
| continue | ||
| } | ||
| err = encoder.WriteDBHeader(uint(i), uint64(keyCount), uint64(ttlCount)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // dump db | ||
| var err2 error | ||
| tmpHandler.db.ForEach(i, func(key string, entity *database.DataEntity, expiration *time.Time) bool { | ||
| var opts []interface{} | ||
| if expiration != nil { | ||
| opts = append(opts, rdb.WithTTL(uint64(expiration.UnixNano()/1e6))) | ||
| } | ||
| switch obj := entity.Data.(type) { | ||
| case []byte: | ||
| err = encoder.WriteStringObject(key, obj, opts...) | ||
| case *List.LinkedList: | ||
| vals := make([][]byte, 0, obj.Len()) | ||
| obj.ForEach(func(i int, v interface{}) bool { | ||
| bytes, _ := v.([]byte) | ||
| vals = append(vals, bytes) | ||
| return true | ||
| }) | ||
| err = encoder.WriteListObject(key, vals, opts...) | ||
| case *set.Set: | ||
| vals := make([][]byte, 0, obj.Len()) | ||
| obj.ForEach(func(m string) bool { | ||
| vals = append(vals, []byte(m)) | ||
| return true | ||
| }) | ||
| err = encoder.WriteSetObject(key, vals, opts...) | ||
| case dict.Dict: | ||
| hash := make(map[string][]byte) | ||
| obj.ForEach(func(key string, val interface{}) bool { | ||
| bytes, _ := val.([]byte) | ||
| hash[key] = bytes | ||
| return true | ||
| }) | ||
| err = encoder.WriteHashMapObject(key, hash, opts...) | ||
| case *SortedSet.SortedSet: | ||
| var entries []*model.ZSetEntry | ||
| obj.ForEach(int64(0), obj.Len(), true, func(element *SortedSet.Element) bool { | ||
| entries = append(entries, &model.ZSetEntry{ | ||
| Member: element.Member, | ||
| Score: element.Score, | ||
| }) | ||
| return true | ||
| }) | ||
| err = encoder.WriteZSetObject(key, entries, opts...) | ||
| } | ||
| if err != nil { | ||
| err2 = err | ||
| return false | ||
| } | ||
| return true | ||
| }) | ||
| if err2 != nil { | ||
| return err2 | ||
| } | ||
| } | ||
| err = encoder.WriteEnd() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |
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