43 lines
1.3 KiB
Go
43 lines
1.3 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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// SetupRedisContainer sets up a real Redis 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 SetupRedisContainer() (c ContainerID, ip string, port int, err error) {
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port = RandomPort()
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forward := fmt.Sprintf("%d:%d", port, 6379)
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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(RedisImageName, port, 15*time.Second, func() (string, error) {
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return run("--name", GenerateContainerID(), "-d", "-P", "-p", forward, RedisImageName)
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})
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return
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}
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// ConnectToRedis starts a Redis image and passes the database url to the connector callback function.
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// The url will match the ip:port pattern (e.g. 123.123.123.123:6379)
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func ConnectToRedis(tries int, delay time.Duration, connector func(url string) bool) (c ContainerID, err error) {
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c, ip, port, err := SetupRedisContainer()
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if err != nil {
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return c, fmt.Errorf("Could not set up Redis 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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url := fmt.Sprintf("%s:%d", ip, port)
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if connector(url) {
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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 Redis container.")
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}
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