53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
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package dockertest
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import (
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"errors"
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"fmt"
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"log"
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"time"
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)
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// SetupEtcdContainer sets up a real etcd instance for testing purposes,
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// using a Docker container. It returns the container ID and its IP address,
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// or makes the test fail on error.
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func SetupEtcdContainer() (c ContainerID, ip string, port int, err error) {
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port = RandomPort()
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forward := fmt.Sprintf("%d:%d", port, 2379)
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if BindDockerToLocalhost != "" {
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forward = "127.0.0.1:" + forward
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}
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c, ip, err = SetupContainer(EtcdImageName, port, 10*time.Second, func() (string, error) {
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return run(
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"--name", GenerateContainerID(),
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"-d",
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"-p", forward,
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EtcdImageName,
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"etcd",
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"-name", "etcd-test",
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"-advertise-client-urls", "http://127.0.0.1:2379",
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"-listen-client-urls", "http://0.0.0.0:2379", // Allow clients from any IP
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)
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})
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return c, ip, port, err
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}
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// ConnectToEtcd starts a etcd image and passes the address to the
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// connector callback function.
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func ConnectToEtcd(tries int, delay time.Duration, connector func(address string) bool) (c ContainerID, err error) {
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c, ip, port, err := SetupEtcdContainer()
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if err != nil {
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return c, fmt.Errorf("Could not set up etcd container: %v", err)
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}
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for try := 0; try <= tries; try++ {
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time.Sleep(delay)
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address := fmt.Sprintf("%s:%d", ip, port)
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if connector(address) {
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return c, nil
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}
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log.Printf("Try %d failed. Retrying.", try)
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}
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return c, errors.New("Could not set up etcd container.")
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}
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