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/*
* Minio Cloud Storage, (C) 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"fmt"
"log"
"math/rand"
"net"
"net/http"
"net/rpc"
"strconv"
"sync"
"time"
)
// For this test framework we have short lock timings
// Production should use eg following values
//
// const LockMaintenanceLoop = 1 * time.Minute
// const LockCheckValidityInterval = 2 * time.Minute
//
const LockMaintenanceLoop = 1 * time.Second
const LockCheckValidityInterval = 5 * time.Second
func startRPCServer(port int) {
log.SetPrefix(fmt.Sprintf("[%d] ", port))
log.SetFlags(log.Lmicroseconds)
server := rpc.NewServer()
locker := &lockServer{
mutex: sync.Mutex{},
lockMap: make(map[string][]lockRequesterInfo),
// timestamp: leave uninitialized for testing (set to real timestamp for actual usage)
}
go func() {
// Start with random sleep time, so as to avoid "synchronous checks" between servers
time.Sleep(time.Duration(rand.Float64() * float64(LockMaintenanceLoop)))
for {
time.Sleep(LockMaintenanceLoop)
locker.lockMaintenance(LockCheckValidityInterval)
}
}()
server.RegisterName("Dsync", locker)
// For some reason the registration paths need to be different (even for different server objs)
rpcPath := rpcPathPrefix + "-" + strconv.Itoa(port)
server.HandleHTTP(rpcPath, fmt.Sprintf("%s-debug", rpcPath))
l, e := net.Listen("tcp", ":"+strconv.Itoa(port))
if e != nil {
log.Fatal("listen error:", e)
}
log.Println("RPC server listening at port", port, "under", rpcPath)
http.Serve(l, nil)
}
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