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bf7f628810
wip: raft does not care about migrating wip: optimize code wip: raft election wip wip: fix raft leader missing log entries wip fix a dead lock batch set slot route wip: raft persist wip refactor cluster suite remove relay rename relay2 refactor: allow customizing client factory test raft refactor re-balance avoid errors caused by inconsistent status on follower nodes during raft commits test raft election
42 lines
1.4 KiB
Go
42 lines
1.4 KiB
Go
package database
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import (
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"github.com/hdt3213/godis/interface/redis"
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"time"
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)
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// CmdLine is alias for [][]byte, represents a command line
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type CmdLine = [][]byte
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// DB is the interface for redis style storage engine
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type DB interface {
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Exec(client redis.Connection, cmdLine [][]byte) redis.Reply
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AfterClientClose(c redis.Connection)
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Close()
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}
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// KeyEventCallback will be called back on key event, such as key inserted or deleted
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// may be called concurrently
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type KeyEventCallback func(dbIndex int, key string, entity *DataEntity)
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// DBEngine is the embedding storage engine exposing more methods for complex application
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type DBEngine interface {
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DB
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ExecWithLock(conn redis.Connection, cmdLine [][]byte) redis.Reply
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ExecMulti(conn redis.Connection, watching map[string]uint32, cmdLines []CmdLine) redis.Reply
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GetUndoLogs(dbIndex int, cmdLine [][]byte) []CmdLine
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ForEach(dbIndex int, cb func(key string, data *DataEntity, expiration *time.Time) bool)
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RWLocks(dbIndex int, writeKeys []string, readKeys []string)
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RWUnLocks(dbIndex int, writeKeys []string, readKeys []string)
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GetDBSize(dbIndex int) (int, int)
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GetEntity(dbIndex int, key string) (*DataEntity, bool)
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GetExpiration(dbIndex int, key string) *time.Time
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SetKeyInsertedCallback(cb KeyEventCallback)
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SetKeyDeletedCallback(cb KeyEventCallback)
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}
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// DataEntity stores data bound to a key, including a string, list, hash, set and so on
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type DataEntity struct {
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Data interface{}
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}
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