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// Copyright 2016 The etcd Authors
//
// 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 integration
import (
"context"
"fmt"
"net/url"
"os"
"path/filepath"
"strings"
"testing"
"time"
"github.com/coreos/etcd/clientv3"
"github.com/coreos/etcd/embed"
)
func TestEmbedEtcd(t *testing.T) {
tests := []struct {
cfg embed.Config
werr string
wpeers int
wclients int
}{
{werr: "multiple discovery"},
{werr: "advertise-client-urls is required"},
{werr: "should be at least"},
{werr: "is too long"},
{wpeers: 1, wclients: 1},
{wpeers: 2, wclients: 1},
{wpeers: 1, wclients: 2},
{werr: "expected IP"},
{werr: "expected IP"},
}
urls := newEmbedURLs(false, 10)
// setup defaults
for i := range tests {
tests[i].cfg = *embed.NewConfig()
}
tests[0].cfg.Durl = "abc"
setupEmbedCfg(&tests[1].cfg, []url.URL{urls[0]}, []url.URL{urls[1]})
tests[1].cfg.ACUrls = nil
tests[2].cfg.TickMs = tests[2].cfg.ElectionMs - 1
tests[3].cfg.ElectionMs = 999999
setupEmbedCfg(&tests[4].cfg, []url.URL{urls[2]}, []url.URL{urls[3]})
setupEmbedCfg(&tests[5].cfg, []url.URL{urls[4]}, []url.URL{urls[5], urls[6]})
setupEmbedCfg(&tests[6].cfg, []url.URL{urls[7], urls[8]}, []url.URL{urls[9]})
dnsURL, _ := url.Parse("http://whatever.test:12345")
tests[7].cfg.LCUrls = []url.URL{*dnsURL}
tests[8].cfg.LPUrls = []url.URL{*dnsURL}
dir := filepath.Join(os.TempDir(), fmt.Sprintf("embed-etcd"))
os.RemoveAll(dir)
defer os.RemoveAll(dir)
for i, tt := range tests {
tests[i].cfg.Dir = dir
e, err := embed.StartEtcd(&tests[i].cfg)
if e != nil {
<-e.Server.ReadyNotify() // wait for e.Server to join the cluster
}
if tt.werr != "" {
if err == nil || !strings.Contains(err.Error(), tt.werr) {
t.Errorf("%d: expected error with %q, got %v", i, tt.werr, err)
}
if e != nil {
e.Close()
}
continue
}
if err != nil {
t.Errorf("%d: expected success, got error %v", i, err)
continue
}
if len(e.Peers) != tt.wpeers {
t.Errorf("%d: expected %d peers, got %d", i, tt.wpeers, len(e.Peers))
}
if len(e.Clients) != tt.wclients {
t.Errorf("%d: expected %d clients, got %d", i, tt.wclients, len(e.Clients))
}
e.Close()
select {
case err := <-e.Err():
t.Errorf("#%d: unexpected error on close (%v)", i, err)
default:
}
}
}
func TestEmbedEtcdGracefulStopSecure(t *testing.T) { testEmbedEtcdGracefulStop(t, true) }
func TestEmbedEtcdGracefulStopInsecure(t *testing.T) { testEmbedEtcdGracefulStop(t, false) }
// testEmbedEtcdGracefulStop ensures embedded server stops
// cutting existing transports.
func testEmbedEtcdGracefulStop(t *testing.T, secure bool) {
cfg := embed.NewConfig()
if secure {
cfg.ClientTLSInfo = testTLSInfo
cfg.PeerTLSInfo = testTLSInfo
}
urls := newEmbedURLs(secure, 2)
setupEmbedCfg(cfg, []url.URL{urls[0]}, []url.URL{urls[1]})
cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprintf("embed-etcd"))
os.RemoveAll(cfg.Dir)
defer os.RemoveAll(cfg.Dir)
e, err := embed.StartEtcd(cfg)
if err != nil {
t.Fatal(err)
}
<-e.Server.ReadyNotify() // wait for e.Server to join the cluster
clientCfg := clientv3.Config{
Endpoints: []string{urls[0].String()},
}
if secure {
clientCfg.TLS, err = testTLSInfo.ClientConfig()
if err != nil {
t.Fatal(err)
}
}
cli, err := clientv3.New(clientCfg)
if err != nil {
t.Fatal(err)
}
defer cli.Close()
// open watch connection
cli.Watch(context.Background(), "foo")
donec := make(chan struct{})
go func() {
e.Close()
close(donec)
}()
select {
case err := <-e.Err():
t.Fatal(err)
case <-donec:
case <-time.After(2*time.Second + e.Server.Cfg.ReqTimeout()):
t.Fatalf("took too long to close server")
}
}
func newEmbedURLs(secure bool, n int) (urls []url.URL) {
scheme := "unix"
if secure {
scheme = "unixs"
}
for i := 0; i < n; i++ {
u, _ := url.Parse(fmt.Sprintf("%s://localhost:%d%06d", scheme, os.Getpid(), i))
urls = append(urls, *u)
}
return
}
func setupEmbedCfg(cfg *embed.Config, curls []url.URL, purls []url.URL) {
cfg.ClusterState = "new"
cfg.LCUrls, cfg.ACUrls = curls, curls
cfg.LPUrls, cfg.APUrls = purls, purls
cfg.InitialCluster = ""
for i := range purls {
cfg.InitialCluster += ",default=" + purls[i].String()
}
cfg.InitialCluster = cfg.InitialCluster[1:]
}
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