TRR (Time-series Raft RPC client/server) is a package to help you hosted a simple KV value with time-series data under raft consensus algorithm. (implement by CoreOS/etcd).
It provide a basic RPC Client/Server for K/V(Key Value) storage service.
- raft consensus algorithm
- Key/Value base usage, easy to Get/Set time-series data.
- Based on Gorilla algorithm which could reduce data size to 12X.
- RPC entry point, easy to use.
Raft is a consensus algorithm that is designed to be easy to understand. It's equivalent to Paxos in fault-tolerance and performance. The difference is that it's decomposed into relatively independent subproblems, and it cleanly addresses all major pieces needed for practical systems. We hope Raft will make consensus available to a wider audience, and that this wider audience will be able to develop a variety of higher quality consensus-based systems than are available today. (quote from here)
- Refer code from raftexample
- Get file listener.go, kvstore.go, raft.go.
- Do your modification for your usage.
raft.transportneed an extra http port for raft message exchange. MUST add this in your code. (which is peer info in example code)
go get github.com/kkdai/trr
package main
import (
"fmt"
. "github.com/kkdai/trr"
)
func main() {
forever := make(chan int)
//RPC addr
rpcAddr := "127.0.0.1:1234"
srv := StartServer(rpcAddr, 1)
<-forever
}package main
import (
"fmt"
. "github.com/kkdai/raftrpc"
)
func main() {
forever := make(chan int)
//Note there are two address and port.
//
// "127.0.0.1:1234" is RPC access point
// "http://127.0.0.1:12379" is raft message access point which use http
var raftMsgSrvList []string
raftMsgSrvList = append(raftMsgSrvList, "http://127.0.0.1:12379")
raftMsgSrvList = append(raftMsgSrvList, "http://127.0.0.1:22379")
srv1 := StartClusterServers("127.0.0.1:1234", 1, raftMsgSrvList)
srv2 := StartClusterServers("127.0.0.1:1235", 2, raftMsgSrvList)
<-forever
}Assume a server exist on 127.0.0.1:1234.
package main
import (
"fmt"
"log"
. "github.com/kkdai/raftrpc"
)
func main() {
client := MakeClerk("127.0.0.1:1234")
t0, _ := time.ParseInLocation("Jan _2 2006 15:04:05", "Mar 24 2015 02:00:00", time.Local)
t0unix := uint32(t0.Unix())
srv := StartServer("127.0.0.1:1230", 1)
client := MakeClerk("127.0.0.1:1230")
client.PutTimeData("t1", t0unix, 10)
t1unix := t0unix + 62
client.PutTimeData("t1", t1unix, 12)
t2unix := t1unix + 62
client.PutTimeDataBack("t1", t2unix, 14)
tt, vv, err := client.GetTimeData("t1")
if err != nil || tt != t0unix || vv != 10 {
log.Println("Simple time get error", tt, vv, err)
}
} - CoreOS ETCD source code
- ETCD Example
- Raft: A First Implementation
- Gorilla time-series algorithm on golang
It is one of my project 52.
etcd is under the Apache 2.0 license. See the LICENSE file for details.