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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| package database | ||
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| import ( | ||
| "github.com/hdt3213/godis/interface/redis" | ||
| "github.com/hdt3213/godis/redis/protocol" | ||
| "strings" | ||
| ) | ||
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| func init() { | ||
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| } | ||
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| var commandTable = make(map[string]*godisCommand) | ||
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| const ( | ||
| Write = "write" | ||
| Readonly = "readonly" | ||
| Denyoom = "denyoom" | ||
| Admin = "admin" | ||
| Pubsub = "pubsub" | ||
| Noscript = "noscript" | ||
| Random = "random" | ||
| SortForScript = "sortforscript" | ||
| Loading = "loading" | ||
| Stale = "stale" | ||
| SkipMonitor = "skip_monitor" | ||
| Asking = "asking" | ||
| Fast = "fast" | ||
| Movablekeys = "movablekeys" | ||
| ) | ||
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| type godisCommand struct { | ||
| name string | ||
| arity int | ||
| signs []string | ||
| firstKey int | ||
| lastKey int | ||
| stepNumber int | ||
| prepare PreFunc | ||
| } | ||
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| func RegisterGodisCommand(name string, arity int, signs []string, firstKey int, lastKey int, stepNumber int, prepare PreFunc) { | ||
| name = strings.ToLower(name) | ||
| commandTable[name] = &godisCommand{ | ||
| name: name, | ||
| arity: arity, | ||
| signs: signs, | ||
| firstKey: firstKey, | ||
| lastKey: lastKey, | ||
| stepNumber: stepNumber, | ||
| prepare: prepare, | ||
| } | ||
| } | ||
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| func execCommand(args [][]byte) redis.Reply { | ||
| n := len(args) | ||
| if n > 1 { | ||
| subCommand := strings.ToUpper(string(args[1])) | ||
| if subCommand == "INFO" { | ||
| return getCommands(args[2:]) | ||
| } else if subCommand == "COUNT" { | ||
| return protocol.MakeIntReply(int64(len(commandTable))) | ||
| } else if subCommand == "GETKEYS" { | ||
| if n < 2 { | ||
| return protocol.MakeErrReply("Unknown subcommand or wrong number of arguments for '" + subCommand + "'") | ||
| } | ||
| return getKeys(args[2:]) | ||
| } else { | ||
| return protocol.MakeErrReply("Unknow subcomand or wrong number of arguments for '" + subCommand + "'") | ||
| } | ||
| } else { | ||
| return getAllGodisCommandReply() | ||
| } | ||
| } | ||
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| func getKeys(args [][]byte) redis.Reply { | ||
| key := string(args[0]) | ||
| command, ok := commandTable[key] | ||
| if !ok { | ||
| return protocol.MakeErrReply("Invalid command specified") | ||
| } | ||
| arity := command.arity | ||
| if arity > 0 { | ||
| if len(args) != arity { | ||
| return protocol.MakeErrReply("Invalid number of arguments specified for command") | ||
| } | ||
| } else { | ||
| if len(args) < -arity { | ||
| return protocol.MakeErrReply("Invalid number of arguments specified for command") | ||
| } | ||
| } | ||
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| prepare := command.prepare | ||
| if prepare == nil { | ||
| return protocol.MakeErrReply("The command has no key arguments") | ||
| } | ||
| writeKeys, readKeys := prepare(args[1:]) | ||
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| keys := append(writeKeys, readKeys...) | ||
| replies := make([]redis.Reply, len(keys)) | ||
| for i, key := range keys { | ||
| replies[i] = protocol.MakeBulkReply([]byte(key)) | ||
| } | ||
| return protocol.MakeMultiRawReply(replies) | ||
| } | ||
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| func getCommands(args [][]byte) redis.Reply { | ||
| replies := make([]redis.Reply, len(args)) | ||
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| for i, v := range args { | ||
| reply, ok := commandTable[string(v)] | ||
| if ok { | ||
| replies[i] = reply.ToReply() | ||
| } else { | ||
| replies[i] = protocol.MakeNullBulkReply() | ||
| } | ||
| } | ||
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| return protocol.MakeMultiRawReply(replies) | ||
| } | ||
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| func getAllGodisCommandReply() redis.Reply { | ||
| replies := make([]redis.Reply, len(commandTable)) | ||
| i := 0 | ||
| for _, v := range commandTable { | ||
| replies[i] = v.ToReply() | ||
| i++ | ||
| } | ||
| return protocol.MakeMultiRawReply(replies) | ||
| } | ||
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| func (g *godisCommand) ToReply() redis.Reply { | ||
| args := make([]redis.Reply, 6) | ||
| args[0] = protocol.MakeBulkReply([]byte(g.name)) | ||
| args[1] = protocol.MakeIntReply(int64(g.arity)) | ||
| signs := make([]redis.Reply, len(g.signs)) | ||
| for i, v := range g.signs { | ||
| signs[i] = protocol.MakeStatusReply(v) | ||
| } | ||
| args[2] = protocol.MakeMultiRawReply(signs) | ||
| args[3] = protocol.MakeIntReply(int64(g.firstKey)) | ||
| args[4] = protocol.MakeIntReply(int64(g.lastKey)) | ||
| args[5] = protocol.MakeIntReply(int64(g.stepNumber)) | ||
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| return protocol.MakeMultiRawReply(args) | ||
| } | ||
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| func init() { | ||
| RegisterGodisCommand("Command", 0, []string{Random, Loading, Stale}, 0, 0, 0, nil) | ||
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| RegisterGodisCommand("Keys", 2, []string{Readonly, SortForScript}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Auth", 2, []string{Noscript, Loading, Stale, SkipMonitor, Fast}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Info", -1, []string{Random, Loading, Stale}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Slaveof", 3, []string{Admin, Noscript, Stale}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Subscribe", -2, []string{Pubsub, Noscript, Loading, Stale}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Publish", 3, []string{Pubsub, Noscript, Loading, Fast}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("FlushAll", -1, []string{Write}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("FlushDb", -1, []string{Write}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Save", 1, []string{Admin, Noscript}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("BgSave", 1, []string{Admin, Noscript}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Select", 2, []string{Loading, Fast}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Replconf", -1, []string{Admin, Noscript, Loading, Stale}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Replconf", 3, []string{Readonly, Admin, Noscript}, 0, 0, 0, nil) | ||
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| // transaction command | ||
| RegisterGodisCommand("Multi", 1, []string{Noscript, Fast}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Discard", 1, []string{Noscript, Fast}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Exec", 1, []string{Noscript, SkipMonitor}, 0, 0, 0, nil) | ||
| RegisterGodisCommand("Watch", 1, []string{Noscript, Fast}, 1, -1, 1, readAllKeys) | ||
|
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| } |
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