73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
|
package etcd
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"net"
|
||
|
|
"net/url"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/coreos/etcd/embed"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
// readyTimeout is the time until the embedded etcd instance should start.
|
||
|
|
readyTimeout = 10 * time.Second
|
||
|
|
)
|
||
|
|
|
||
|
|
// getFreePort returns a random open TCP port.
|
||
|
|
func getFreePort() int {
|
||
|
|
ln, err := net.Listen("tcp", "[::]:0")
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
port := ln.Addr().(*net.TCPAddr).Port
|
||
|
|
|
||
|
|
err = ln.Close()
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
return port
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewEmbeddedEtcdInstance creates an embedded etcd instance for testing,
|
||
|
|
// listening on random open ports. Returns the backend config and a cleanup
|
||
|
|
// func that will stop the etcd instance.
|
||
|
|
func NewEmbeddedEtcdInstance(path string) (*BackendConfig, func(), error) {
|
||
|
|
cfg := embed.NewConfig()
|
||
|
|
cfg.Dir = path
|
||
|
|
|
||
|
|
// To ensure that we can submit large transactions.
|
||
|
|
cfg.MaxTxnOps = 1000
|
||
|
|
|
||
|
|
// Listen on random free ports.
|
||
|
|
clientURL := fmt.Sprintf("127.0.0.1:%d", getFreePort())
|
||
|
|
peerURL := fmt.Sprintf("127.0.0.1:%d", getFreePort())
|
||
|
|
cfg.LCUrls = []url.URL{{Host: clientURL}}
|
||
|
|
cfg.LPUrls = []url.URL{{Host: peerURL}}
|
||
|
|
|
||
|
|
etcd, err := embed.StartEtcd(cfg)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
select {
|
||
|
|
case <-etcd.Server.ReadyNotify():
|
||
|
|
case <-time.After(readyTimeout):
|
||
|
|
etcd.Close()
|
||
|
|
return nil, nil,
|
||
|
|
fmt.Errorf("etcd failed to start after: %v", readyTimeout)
|
||
|
|
}
|
||
|
|
|
||
|
|
connConfig := &BackendConfig{
|
||
|
|
Host: "http://" + peerURL,
|
||
|
|
User: "user",
|
||
|
|
Pass: "pass",
|
||
|
|
}
|
||
|
|
|
||
|
|
return connConfig, func() {
|
||
|
|
etcd.Close()
|
||
|
|
}, nil
|
||
|
|
}
|