forked from etcd-io/etcd
/
server_utils.go
119 lines (97 loc) · 2.82 KB
/
server_utils.go
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package tests
import (
"io/ioutil"
"net/http"
"os"
"sync"
"time"
"github.com/coreos/etcd/third_party/github.com/coreos/raft"
"github.com/coreos/etcd/metrics"
"github.com/coreos/etcd/server"
"github.com/coreos/etcd/store"
)
const (
testName = "ETCDTEST"
testClientURL = "localhost:4401"
testRaftURL = "localhost:7701"
testSnapshotCount = 10000
testHeartbeatInterval = time.Duration(50) * time.Millisecond
testElectionTimeout = time.Duration(200) * time.Millisecond
)
// Starts a server in a temporary directory.
func RunServer(f func(*server.Server)) {
path, _ := ioutil.TempDir("", "etcd-")
defer os.RemoveAll(path)
store := store.New()
registry := server.NewRegistry(store)
serverStats := server.NewRaftServerStats(testName)
followersStats := server.NewRaftFollowersStats(testName)
psConfig := server.PeerServerConfig{
Name: testName,
URL: "http://" + testRaftURL,
Scheme: "http",
SnapshotCount: testSnapshotCount,
MaxClusterSize: 9,
}
mb := metrics.NewBucket("")
ps := server.NewPeerServer(psConfig, registry, store, &mb, followersStats, serverStats)
psListener, err := server.NewListener(testRaftURL)
if err != nil {
panic(err)
}
// Create Raft transporter and server
dialTimeout := (3 * testHeartbeatInterval) + testElectionTimeout
responseHeaderTimeout := (3 * testHeartbeatInterval) + testElectionTimeout
raftTransporter := server.NewTransporter(followersStats, serverStats, registry, testHeartbeatInterval, dialTimeout, responseHeaderTimeout)
raftServer, err := raft.NewServer(testName, path, raftTransporter, store, ps, "")
if err != nil {
panic(err)
}
raftServer.SetElectionTimeout(testElectionTimeout)
raftServer.SetHeartbeatInterval(testHeartbeatInterval)
ps.SetRaftServer(raftServer)
s := server.New(testName, "http://"+testClientURL, ps, registry, store, nil)
sListener, err := server.NewListener(testClientURL)
if err != nil {
panic(err)
}
ps.SetServer(s)
w := &sync.WaitGroup{}
// Start up peer server.
c := make(chan bool)
go func() {
c <- true
ps.Start(false, "", []string{})
h := waitHandler{w, ps.HTTPHandler()}
http.Serve(psListener, &h)
}()
<-c
// Start up etcd server.
go func() {
c <- true
h := waitHandler{w, s.HTTPHandler()}
http.Serve(sListener, &h)
}()
<-c
// Wait to make sure servers have started.
time.Sleep(50 * time.Millisecond)
// Execute the function passed in.
f(s)
// Clean up servers.
ps.Stop()
psListener.Close()
sListener.Close()
w.Wait()
}
type waitHandler struct {
wg *sync.WaitGroup
handler http.Handler
}
func (h *waitHandler) ServeHTTP(w http.ResponseWriter, r *http.Request){
h.wg.Add(1)
defer h.wg.Done()
h.handler.ServeHTTP(w, r)
//important to flush before decrementing the wait group.
//we won't get a chance to once main() ends.
w.(http.Flusher).Flush()
}