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42 lines
921 B
42 lines
921 B
package nodes
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import (
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"strconv"
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"github.com/syndtr/goleveldb/leveldb"
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)
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// leader node作为server为client注册的方法
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type ServerReply struct{
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Isconnect bool
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HaveValue bool
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Value string
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}
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// RPC call
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func (node *Node) WriteKV(kv LogEntry, reply *ServerReply) error {
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logId := node.maxLogId
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node.maxLogId++
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node.log[logId] = kv
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// 广播给其它节点
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node.db.Put([]byte(kv.Key), []byte(kv.Value), nil)
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log.Info("server write : logId = " + strconv.Itoa(logId) + ", key = " + kv.Key)
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node.BroadCastKV(logId, kv)
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reply.Isconnect = true
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return nil
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}
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// RPC call
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func (node *Node) ReadKey(key string, reply *ServerReply) error {
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log.Info("server read : " + key)
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// 先只读leader自己
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value, err := node.db.Get([]byte(key), nil)
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if err == leveldb.ErrNotFound {
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reply.HaveValue = false
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} else {
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reply.HaveValue = true
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reply.Value = string(value)
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}
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reply.Isconnect = true
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return nil
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}
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