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How to use Networks method of testcontainers Package

Best Testcontainers-go code snippet using testcontainers.Networks

testing_helpers.go

Source:testing_helpers.go

...31				Env: map[string]string{32					"ZOOKEEPER_CLIENT_PORT": "2181",33					"ZOOKEEPER_TICK_TIME":   "2000",34				},35				Networks: []string{networkName},36			},37			Started: true,38		})39	CheckFail(err, "Zookeeper was not able to start")40	kafkaContainer, err = testcontainers.GenericContainer(Ctx,41		testcontainers.GenericContainerRequest{42			ContainerRequest: testcontainers.ContainerRequest{43				Image:        "confluentinc/cp-server:" + cpTestVersion,44				ExposedPorts: []string{"29092/tcp"},45				WaitingFor:   wait.ForListeningPort("29092/tcp"),46				Name:         "broker" + networkName,47				Env: map[string]string{48					"KAFKA_BROKER_ID":                                   "1",49					"KAFKA_ZOOKEEPER_CONNECT":                           "zookeeper" + networkName + ":2181",50					"KAFKA_LISTENER_SECURITY_PROTOCOL_MAP":              "PLAINTEXT:PLAINTEXT",51					"KAFKA_ADVERTISED_LISTENERS":                        "PLAINTEXT://broker" + networkName + ":29092",52					"KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR":            "1",53					"KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS":            "0",54					"KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR":  "1",55					"KAFKA_CONFLUENT_BALANCER_TOPIC_REPLICATION_FACTOR": "1",56					"KAFKA_TRANSACTION_STATE_LOG_MIN_ISR":               "1",57					"KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR":    "1",58				},59				Networks: []string{networkName},60			},61			Started: true,62		})63	CheckFail(err, "Kafka was not able to start")64	schemaRegistryContainer, err = testcontainers.GenericContainer(Ctx,65		testcontainers.GenericContainerRequest{66			ContainerRequest: testcontainers.ContainerRequest{67				Image:        "confluentinc/cp-schema-registry:" + cpTestVersion,68				ExposedPorts: []string{"8081/tcp"},69				WaitingFor:   wait.ForListeningPort("8081/tcp"),70				Name:         "schema-registry-src-" + networkName,71				Env: map[string]string{72					"SCHEMA_REGISTRY_HOST_NAME":                           "schema-registry-src",73					"SCHEMA_REGISTRY_SCHEMA_REGISTRY_GROUP_ID":            "schema-src",74					"SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS":        "broker" + networkName + ":29092",75					"SCHEMA_REGISTRY_KAFKASTORE_TOPIC":                    "_schemas",76					"SCHEMA_REGISTRY_KAFKASTORE_TOPIC_REPLICATION_FACTOR": "1",77					"SCHEMA_REGISTRY_MODE_MUTABILITY":                     "true",78				},79				Networks: []string{networkName},80			},81			Started: true,82		})83	CheckFail(err, "Source SR was not able to start")84	return zooContainer, kafkaContainer, schemaRegistryContainer85}86// Simple check function that will fail all if there is an error present and allows a custom message to be printed87func CheckFail(e error, msg string) {88	if e != nil {89		log.Println(e)90		log.Fatalln(msg)91	}92}...

localstack.go

Source:localstack.go

...49func (b ContainerBuilder) WithServices(services ...Service) ContainerBuilder {50	b.services = append(b.services, services...)51	return b52}53// WithNetworks appends a list of networks you want the container to join54func (b ContainerBuilder) WithNetworks(networks ...string) ContainerBuilder {55	b.networks = append(b.networks, networks...)56	return b57}58// WithEdgePort defines the edge port59func (b ContainerBuilder) WithEdgePort(port int) ContainerBuilder {60	b.edgePort = port61	return b62}63// Build creates and starts the container64func (b ContainerBuilder) Build() (Container, error) {65	edgePort := strconv.Itoa(b.edgePort)66	var services []string67	for _, v := range b.services {68		services = append(services, string(v))...

utils.go

Source:utils.go

...7	"github.com/testcontainers/testcontainers-go"8)9// AddNetworkAlias adds a network alias to a generic container request10func AddNetworkAlias(req *testcontainers.GenericContainerRequest, network, alias string) {11	if req.Networks == nil {12		req.Networks = make([]string, 0)13	}14	req.Networks = append(req.Networks, network)15	if req.NetworkAliases == nil {16		req.NetworkAliases = make(map[string][]string)17	}18	if _, ok := req.NetworkAliases[network]; !ok {19		req.NetworkAliases[network] = make([]string, 0)20	}21	req.NetworkAliases[network] = append(req.NetworkAliases[network], alias)22}23// GetHostAndPort retrieves the container host and port24func GetHostAndPort(ctx context.Context, c testcontainers.Container, exposedPort nat.Port) (host string, port nat.Port, err error) {25	if host, err = c.Host(ctx); err != nil {26		err = errors.Wrap(err, "Error reading container host name")27		return28	}29	if port, err = c.MappedPort(ctx, exposedPort); err != nil {30		err = errors.Wrap(err, "Error reading container mapped port")31		return32	}33	return34}35// GetAliasForNetwork retrieves the container alias in the specified network36func GetAliasForNetwork(ctx context.Context, req testcontainers.GenericContainerRequest, network string) (string, error) {37	hasNetwork := false38	for _, n := range req.Networks {39		if strings.EqualFold(n, network) {40			hasNetwork = true41			break42		}43	}44	if !hasNetwork {45		return "", errors.New("the container is not in the specified network")46	}47	var aliases []string48	var ok bool49	if aliases, ok = req.NetworkAliases[network]; !ok {50		return "", errors.New("the container is does not have an alias in the specified network")51	}52	if len(aliases) == 0 {...

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		Cmd:          []string{"top"},7		WaitingFor:   wait.ForLog("listening on port 80"),8	}9	alpine, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{10	})11	if err != nil {12		panic(err)13	}14	defer alpine.Terminate(ctx)15	ip, err := alpine.Host(ctx)16	if err != nil {17		panic(err)18	}19	port, err := alpine.MappedPort(ctx, "80")20	if err != nil {21		panic(err)22	}23	fmt.Println(ip, port.Int())24}25import (26func main() {27	ctx := context.Background()28	req := testcontainers.ContainerRequest{29		ExposedPorts: []string{"80/tcp"},30		Cmd:          []string{"top"},31		WaitingFor:   wait.ForLog("listening on port 80"),32	}33	alpine, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{34	})35	if err != nil {36		panic(err)37	}38	defer alpine.Terminate(ctx)39	ip, err := alpine.Host(ctx)40	if err != nil {41		panic(err)42	}43	port, err := alpine.MappedPort(ctx, "80")44	if err != nil {45		panic(err)46	}47	fmt.Println(ip, port.Int())48}49import (

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"6379/tcp"},6		WaitingFor:   wait.ForLog("Ready to accept connections"),7	}8	redisContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatalf("Could not start container: %v", err)12	}13	defer redisContainer.Terminate(ctx)14	ip, err := redisContainer.Host(ctx)15	if err != nil {16		log.Fatalf("Could not get container ip: %v", err)17	}18	port, err := redisContainer.MappedPort(ctx, "6379")19	if err != nil {20		log.Fatalf("Could not get container port: %v", err)21	}22	fmt.Printf("Redis is available on %s:%s", ip, port.Port())23	time.Sleep(5 * time.Minute)24}

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForHTTP("/"),7	}8	nginx, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatalf("Could not start container: %v", err)12	}13	defer nginx.Terminate(ctx)14	ip, err := nginx.Host(ctx)15	if err != nil {16		log.Fatalf("Could not get container IP: %v", err)17	}18	port, err := nginx.MappedPort(ctx, "80")19	if err != nil {20		log.Fatalf("Could not get mapped port: %v", err)21	}22	if err != nil {23		log.Fatalf("Could not make request to nginx: %v", err)24	}25	fmt.Printf("Request returned status %s26}27import (28func main() {29	ctx := context.Background()30	req := testcontainers.NetworkRequest{31	}32	network, err := testcontainers.GenericNetwork(ctx, testcontainers.GenericNetworkRequest{33	})34	if err != nil {35		log.Fatalf("Could not start network: %v", err)36	}37	defer network.Remove(ctx)38	nginx, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{39		ContainerRequest: testcontainers.ContainerRequest{40			ExposedPorts: []string{"80/tcp"},41			WaitingFor:   wait.ForHTTP("/"),

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForListeningPort("80/tcp"),7	}8	networkReq := testcontainers.NetworkRequest{Name: "test-network", Driver: "bridge"}9	network, err := testcontainers.GenericNetwork(ctx, networkReq)10	if err != nil {11		log.Fatal(err)12	}13	defer network.Terminate(ctx)14	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{15		Networks:         []string{network.Name()},16	})17	if err != nil {18		log.Fatal(err)19	}20	defer container.Terminate(ctx)21	ip, err := container.Host(ctx)22	if err != nil {23		log.Fatal(err)24	}25	log.Println(ip)26	port, err := container.MappedPort(ctx, "80")27	if err != nil {28		log.Fatal(err)29	}30	log.Println(port.Int())31	err = container.Terminate(ctx)32	if err != nil {33		log.Fatal(err)34	}35}

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"6379/tcp"},6		WaitingFor:   testcontainers.WaitingForLog("Ready to accept connections"),7	}8	redis, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatalf("Could not start container: %s", err)12	}13	defer redis.Terminate(ctx)14	ip, err := redis.Host(ctx)15	if err != nil {16		log.Fatalf("Could not get container IP: %s", err)17	}18	port, err := redis.MappedPort(ctx, "6379")19	if err != nil {20		log.Fatalf("Could not get mapped port: %s", err)21	}22	fmt.Println("Redis is available on", ip, "on port", port.Int())23}24import (25func main() {26	ctx := context.Background()27	network, err := testcontainers.GenericNetwork(ctx, testcontainers.GenericNetworkRequest{28		NetworkRequest: testcontainers.NetworkRequest{29		},30	})31	if err != nil {32		log.Fatalf("Could not create network: %s", err)33	}34	defer network.Remove(ctx)35	req := testcontainers.ContainerRequest{36		ExposedPorts: []string{"6379/tcp"},37		WaitingFor:   testcontainers.WaitingForLog("Ready to accept connections"),38	}39	redis, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{40	})41	if err != nil {42		log.Fatalf("Could not start container: %s", err)43	}44	defer redis.Terminate(ctx)45	ip, err := redis.Host(ctx)46	if err != nil {47		log.Fatalf("Could not get container IP

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	network, err := testcontainers.GenericNetwork(ctx, testcontainers.GenericNetworkRequest{5		NetworkRequest: testcontainers.NetworkRequest{6		},7	})8	if err != nil {9		log.Fatal(err)10	}11	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{12		ContainerRequest: testcontainers.ContainerRequest{13			ExposedPorts: []string{"80/tcp"},14			WaitingFor:   wait.ForListeningPort("80/tcp"),15		},16	})17	if err != nil {18		log.Fatal(err)19	}20	err = network.Connect(ctx, testcontainers.NetworkConnection{21		ContainerID:  container.GetContainerID(),22	})23	if err != nil {24		log.Fatal(err)25	}26	ip, err := network.IPAddress(ctx, "nginx")27	if err != nil {28		log.Fatal(err)29	}30	fmt.Println(ip)31	err = container.Terminate(ctx)32	if err != nil {33		log.Fatal(err)34	}35	err = network.Remove(ctx)36	if err != nil {37		log.Fatal(err)38	}39}

Networks

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		Cmd:          []string{"sh", "-c", "while true; do echo hello world; sleep 1; done"},6		ExposedPorts: []string{"80/tcp"},7		WaitingFor:   wait.ForLog("hello world"),8	}9	network, err := testcontainers.GenericNetwork(ctx, testcontainers.GenericNetworkRequest{10		NetworkRequest: testcontainers.NetworkRequest{11		},12	})13	if err != nil {14		log.Fatal(err)15	}16	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{17		Networks:         []string{network.NetworkID()},18	})19	if err != nil {20		log.Fatal(err)21	}22	defer func() {23		if err := container.Terminate(ctx); err != nil {24			log.Fatal(err)25		}26	}()27	ip, err := container.Host(ctx)28	if err != nil {29		log.Fatal(err)30	}31	port, err := container.MappedPort(ctx, "80")32	if err != nil {33		log.Fatal(err)34	}35	fmt.Printf("Container %s is lis

Networks

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForLog("ready to handle connections"),7	}8	ctx := context.Background()

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