How to use printReaperBanner method of testcontainers Package

Best Testcontainers-go code snippet using testcontainers.printReaperBanner

docker.go

Source:docker.go

...811				req.Labels[k] = v812			}813		}814	} else if !isReaperContainer {815		p.printReaperBanner("container")816	}817	if err = req.Validate(); err != nil {818		return nil, err819	}820	var tag string821	var platform *specs.Platform822	if req.ShouldBuildImage() {823		tag, err = p.BuildImage(ctx, &req)824		if err != nil {825			return nil, err826		}827	} else {828		tag = req.Image829		if req.ImagePlatform != "" {830			p, err := platforms.Parse(req.ImagePlatform)831			if err != nil {832				return nil, fmt.Errorf("invalid platform %s: %w", req.ImagePlatform, err)833			}834			platform = &p835		}836		var shouldPullImage bool837		if req.AlwaysPullImage {838			shouldPullImage = true // If requested always attempt to pull image839		} else {840			image, _, err := p.client.ImageInspectWithRaw(ctx, tag)841			if err != nil {842				if client.IsErrNotFound(err) {843					shouldPullImage = true844				} else {845					return nil, err846				}847			}848			if platform != nil && (image.Architecture != platform.Architecture || image.Os != platform.OS) {849				shouldPullImage = true850			}851		}852		if shouldPullImage {853			pullOpt := types.ImagePullOptions{854				Platform: req.ImagePlatform, // may be empty855			}856			if req.RegistryCred != "" {857				pullOpt.RegistryAuth = req.RegistryCred858			}859			if err := p.attemptToPullImage(ctx, tag, pullOpt); err != nil {860				return nil, err861			}862		}863	}864	exposedPorts := req.ExposedPorts865	if len(exposedPorts) == 0 && !req.NetworkMode.IsContainer() {866		image, _, err := p.client.ImageInspectWithRaw(ctx, tag)867		if err != nil {868			return nil, err869		}870		for p, _ := range image.ContainerConfig.ExposedPorts {871			exposedPorts = append(exposedPorts, string(p))872		}873	}874	exposedPortSet, exposedPortMap, err := nat.ParsePortSpecs(exposedPorts)875	if err != nil {876		return nil, err877	}878	dockerInput := &container.Config{879		Entrypoint:   req.Entrypoint,880		Image:        tag,881		Env:          env,882		ExposedPorts: exposedPortSet,883		Labels:       req.Labels,884		Cmd:          req.Cmd,885		Hostname:     req.Hostname,886		User:         req.User,887	}888	// prepare mounts889	mounts := mapToDockerMounts(req.Mounts)890	hostConfig := &container.HostConfig{891		ExtraHosts:   req.ExtraHosts,892		PortBindings: exposedPortMap,893		Binds:        req.Binds,894		Mounts:       mounts,895		Tmpfs:        req.Tmpfs,896		AutoRemove:   req.AutoRemove,897		Privileged:   req.Privileged,898		NetworkMode:  req.NetworkMode,899		Resources:    req.Resources,900		ShmSize:      req.ShmSize,901		CapAdd:       req.CapAdd,902		CapDrop:      req.CapDrop,903	}904	endpointConfigs := map[string]*network.EndpointSettings{}905	// #248: Docker allows only one network to be specified during container creation906	// If there is more than one network specified in the request container should be attached to them907	// once it is created. We will take a first network if any specified in the request and use it to create container908	if len(req.Networks) > 0 {909		attachContainerTo := req.Networks[0]910		nw, err := p.GetNetwork(ctx, NetworkRequest{911			Name: attachContainerTo,912		})913		if err == nil {914			endpointSetting := network.EndpointSettings{915				Aliases:   req.NetworkAliases[attachContainerTo],916				NetworkID: nw.ID,917			}918			endpointConfigs[attachContainerTo] = &endpointSetting919		}920	}921	networkingConfig := network.NetworkingConfig{922		EndpointsConfig: endpointConfigs,923	}924	resp, err := p.client.ContainerCreate(ctx, dockerInput, hostConfig, &networkingConfig, platform, req.Name)925	if err != nil {926		return nil, err927	}928	// #248: If there is more than one network specified in the request attach newly created container to them one by one929	if len(req.Networks) > 1 {930		for _, n := range req.Networks[1:] {931			nw, err := p.GetNetwork(ctx, NetworkRequest{932				Name: n,933			})934			if err == nil {935				endpointSetting := network.EndpointSettings{936					Aliases: req.NetworkAliases[n],937				}938				err = p.client.NetworkConnect(ctx, nw.ID, resp.ID, &endpointSetting)939				if err != nil {940					return nil, err941				}942			}943		}944	}945	c := &DockerContainer{946		ID:                resp.ID,947		WaitingFor:        req.WaitingFor,948		Image:             tag,949		imageWasBuilt:     req.ShouldBuildImage(),950		sessionID:         sessionID,951		provider:          p,952		terminationSignal: termSignal,953		skipReaper:        req.SkipReaper,954		stopProducer:      make(chan bool),955		logger:            p.Logger,956	}957	for _, f := range req.Files {958		err := c.CopyFileToContainer(ctx, f.HostFilePath, f.ContainerFilePath, f.FileMode)959		if err != nil {960			return nil, fmt.Errorf("can't copy %s to container: %w", f.HostFilePath, err)961		}962	}963	return c, nil964}965func (p *DockerProvider) findContainerByName(ctx context.Context, name string) (*types.Container, error) {966	if name == "" {967		return nil, nil968	}969	// Note that, 'name' filter will use regex to find the containers970	filter := filters.NewArgs(filters.Arg("name", fmt.Sprintf("^%s$", name)))971	containers, err := p.client.ContainerList(ctx, types.ContainerListOptions{Filters: filter})972	if err != nil {973		return nil, err974	}975	if len(containers) > 0 {976		return &containers[0], nil977	}978	return nil, nil979}980func (p *DockerProvider) ReuseOrCreateContainer(ctx context.Context, req ContainerRequest) (Container, error) {981	c, err := p.findContainerByName(ctx, req.Name)982	if err != nil {983		return nil, err984	}985	if c == nil {986		return p.CreateContainer(ctx, req)987	}988	sessionID := sessionID()989	var termSignal chan bool990	if !req.SkipReaper {991		r, err := NewReaper(context.WithValue(ctx, dockerHostContextKey, p.host), sessionID.String(), p, req.ReaperImage)992		if err != nil {993			return nil, fmt.Errorf("%w: creating reaper failed", err)994		}995		termSignal, err = r.Connect()996		if err != nil {997			return nil, fmt.Errorf("%w: connecting to reaper failed", err)998		}999	} else {1000		p.printReaperBanner("container")1001	}1002	dc := &DockerContainer{1003		ID:                c.ID,1004		WaitingFor:        req.WaitingFor,1005		Image:             c.Image,1006		sessionID:         sessionID,1007		provider:          p,1008		terminationSignal: termSignal,1009		skipReaper:        req.SkipReaper,1010		stopProducer:      make(chan bool),1011		logger:            p.Logger,1012		isRunning:         c.State == "running",1013	}1014	return dc, nil1015}1016// attemptToPullImage tries to pull the image while respecting the ctx cancellations.1017// Besides, if the image cannot be pulled due to ErrorNotFound then no need to retry but terminate immediately.1018func (p *DockerProvider) attemptToPullImage(ctx context.Context, tag string, pullOpt types.ImagePullOptions) error {1019	var (1020		err  error1021		pull io.ReadCloser1022	)1023	err = backoff.Retry(func() error {1024		pull, err = p.client.ImagePull(ctx, tag, pullOpt)1025		if err != nil {1026			if _, ok := err.(errdefs.ErrNotFound); ok {1027				return backoff.Permanent(err)1028			}1029			Logger.Printf("Failed to pull image: %s, will retry", err)1030			return err1031		}1032		return nil1033	}, backoff.WithContext(backoff.NewExponentialBackOff(), ctx))1034	if err != nil {1035		return err1036	}1037	defer pull.Close()1038	// download of docker image finishes at EOF of the pull request1039	_, err = ioutil.ReadAll(pull)1040	return err1041}1042// Health measure the healthiness of the provider. Right now we leverage the1043// docker-client ping endpoint to see if the daemon is reachable.1044func (p *DockerProvider) Health(ctx context.Context) (err error) {1045	_, err = p.client.Ping(ctx)1046	return1047}1048// RunContainer takes a RequestContainer as input and it runs a container via the docker sdk1049func (p *DockerProvider) RunContainer(ctx context.Context, req ContainerRequest) (Container, error) {1050	c, err := p.CreateContainer(ctx, req)1051	if err != nil {1052		return nil, err1053	}1054	if err := c.Start(ctx); err != nil {1055		return c, fmt.Errorf("%w: could not start container", err)1056	}1057	return c, nil1058}1059// Config provides the TestContainersConfig read from $HOME/.testcontainers.properties or1060// the environment variables1061func (p *DockerProvider) Config() TestContainersConfig {1062	return p.config1063}1064// daemonHost gets the host or ip of the Docker daemon where ports are exposed on1065// Warning: this is based on your Docker host setting. Will fail if using an SSH tunnel1066// You can use the "TC_HOST" env variable to set this yourself1067func (p *DockerProvider) daemonHost(ctx context.Context) (string, error) {1068	if p.hostCache != "" {1069		return p.hostCache, nil1070	}1071	host, exists := os.LookupEnv("TC_HOST")1072	if exists {1073		p.hostCache = host1074		return p.hostCache, nil1075	}1076	// infer from Docker host1077	url, err := url.Parse(p.client.DaemonHost())1078	if err != nil {1079		return "", err1080	}1081	switch url.Scheme {1082	case "http", "https", "tcp":1083		p.hostCache = url.Hostname()1084	case "unix", "npipe":1085		if inAContainer() {1086			ip, err := p.GetGatewayIP(ctx)1087			if err != nil {1088				// fallback to getDefaultGatewayIP1089				ip, err = getDefaultGatewayIP()1090				if err != nil {1091					ip = "localhost"1092				}1093			}1094			p.hostCache = ip1095		} else {1096			p.hostCache = "localhost"1097		}1098	default:1099		return "", errors.New("Could not determine host through env or docker host")1100	}1101	return p.hostCache, nil1102}1103// CreateNetwork returns the object representing a new network identified by its name1104func (p *DockerProvider) CreateNetwork(ctx context.Context, req NetworkRequest) (Network, error) {1105	var err error1106	// Make sure that bridge network exists1107	// In case it is disabled we will create reaper_default network1108	if p.DefaultNetwork == "" {1109		if p.DefaultNetwork, err = p.getDefaultNetwork(ctx, p.client); err != nil {1110			return nil, err1111		}1112	}1113	if req.Labels == nil {1114		req.Labels = make(map[string]string)1115	}1116	nc := types.NetworkCreate{1117		Driver:         req.Driver,1118		CheckDuplicate: req.CheckDuplicate,1119		Internal:       req.Internal,1120		EnableIPv6:     req.EnableIPv6,1121		Attachable:     req.Attachable,1122		Labels:         req.Labels,1123		IPAM:           req.IPAM,1124	}1125	var termSignal chan bool1126	if !req.SkipReaper {1127		sessionID := sessionID()1128		r, err := NewReaper(context.WithValue(ctx, dockerHostContextKey, p.host), sessionID.String(), p, req.ReaperImage)1129		if err != nil {1130			return nil, fmt.Errorf("%w: creating network reaper failed", err)1131		}1132		termSignal, err = r.Connect()1133		if err != nil {1134			return nil, fmt.Errorf("%w: connecting to network reaper failed", err)1135		}1136		for k, v := range r.Labels() {1137			if _, ok := req.Labels[k]; !ok {1138				req.Labels[k] = v1139			}1140		}1141	} else {1142		p.printReaperBanner("network")1143	}1144	response, err := p.client.NetworkCreate(ctx, req.Name, nc)1145	if err != nil {1146		return &DockerNetwork{}, err1147	}1148	n := &DockerNetwork{1149		ID:                response.ID,1150		Driver:            req.Driver,1151		Name:              req.Name,1152		terminationSignal: termSignal,1153		provider:          p,1154	}1155	return n, nil1156}1157// GetNetwork returns the object representing the network identified by its name1158func (p *DockerProvider) GetNetwork(ctx context.Context, req NetworkRequest) (types.NetworkResource, error) {1159	networkResource, err := p.client.NetworkInspect(ctx, req.Name, types.NetworkInspectOptions{1160		Verbose: true,1161	})1162	if err != nil {1163		return types.NetworkResource{}, err1164	}1165	return networkResource, err1166}1167func (p *DockerProvider) GetGatewayIP(ctx context.Context) (string, error) {1168	// Use a default network as defined in the DockerProvider1169	if p.DefaultNetwork == "" {1170		var err error1171		p.DefaultNetwork, err = p.getDefaultNetwork(ctx, p.client)1172		if err != nil {1173			return "", err1174		}1175	}1176	nw, err := p.GetNetwork(ctx, NetworkRequest{Name: p.DefaultNetwork})1177	if err != nil {1178		return "", err1179	}1180	var ip string1181	for _, config := range nw.IPAM.Config {1182		if config.Gateway != "" {1183			ip = config.Gateway1184			break1185		}1186	}1187	if ip == "" {1188		return "", errors.New("Failed to get gateway IP from network settings")1189	}1190	return ip, nil1191}1192func (p *DockerProvider) printReaperBanner(resource string) {1193	ryukDisabledMessage := `1194	**********************************************************************************************1195	Ryuk has been disabled for the ` + resource + `. This can cause unexpected behavior in your environment.1196	More on this: https://golang.testcontainers.org/features/garbage_collector/1197	**********************************************************************************************`1198	p.Logger.Printf(ryukDisabledMessage)1199}1200func inAContainer() bool {1201	// see https://github.com/testcontainers/testcontainers-java/blob/3ad8d80e2484864e554744a4800a81f6b7982168/core/src/main/java/org/testcontainers/dockerclient/DockerClientConfigUtils.java#L151202	if _, err := os.Stat("/.dockerenv"); err == nil {1203		return true1204	}1205	return false1206}...

printReaperBanner

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		Cmd:          []string{"echo", "Hello world!"},6		ExposedPorts: []string{"80/tcp"},7		WaitingFor:   wait.ForLog("Hello world!"),8	}9	provider, err := testcontainers.NewDockerProvider()10	if err != nil {11		panic(err)12	}13	container, err := provider.CreateContainer(ctx, req)14	if err != nil {15		panic(err)16	}17	err = provider.StartContainer(ctx, container)18	if err != nil {19		panic(err)20	}21	ip, err := provider.GetContainerIP(ctx, container)22	if err != nil {23		panic(err)24	}25	fmt.Println(ip)26	err = provider.StopContainer(ctx, container)27	if err != nil {28		panic(err)29	}30	err = provider.RemoveContainer(ctx, container)31	if err != nil {32		panic(err)33	}34}35import (36func main() {37	ctx := context.Background()38	req := testcontainers.ContainerRequest{39		Cmd:          []string{"echo", "Hello world!"},40		ExposedPorts: []string{"80/tcp"},41		WaitingFor:   wait.ForLog("Hello world!"),42	}43	provider, err := testcontainers.NewDockerProvider()44	if err != nil {45		panic(err)46	}47	container, err := provider.CreateContainer(ctx, req)48	if err != nil {49		panic(err)50	}51	err = provider.StartContainer(ctx, container

printReaperBanner

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"8080"},6		WaitingFor:   wait.ForLog("Started!"),7	}8	ryukContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		panic(err)12	}13	defer ryukContainer.Terminate(ctx)14}15import (16func main() {17	ctx := context.Background()18	req := testcontainers.ContainerRequest{19		ExposedPorts: []string{"8080"},20		WaitingFor:   wait.ForLog("Started!"),21	}22	ryukContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{23	})24	if err != nil {25		panic(err)26	}27	defer ryukContainer.Terminate(ctx)28	fmt.Println("Ryuk container started")29}30import (31func main() {32	ctx := context.Background()33	req := testcontainers.ContainerRequest{34		ExposedPorts: []string{"8080"},35		WaitingFor:   wait.ForLog("Started!"),36	}37	ryukContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{38	})39	if err != nil {40		panic(err)41	}42	defer ryukContainer.Terminate(ctx)43	fmt.Println("Ryuk container started")44	fmt.Println(ryukContainer.Get

printReaperBanner

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		Cmd:          []string{"sleep", "1m"},6		ExposedPorts: []string{"80/tcp"},7		WaitingFor:   wait.ForLog("Listening on port 80"),8	}9	c, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{10	})11	if err != nil {12		log.Fatal(err)13	}14	defer c.Terminate(ctx)15	ip, err := c.Host(ctx)16	if err != nil {17		log.Fatal(err)18	}19	port, err := c.MappedPort(ctx, "80/tcp")20	if err != nil {21		log.Fatal(err)22	}23	fmt.Println(ip, port.Int())24}

printReaperBanner

Using AI Code Generation

1import (2func main() {3	fmt.Println(testcontainers.PrintReaperBanner())4}5import (6func main() {7	fmt.Println(testcontainers.PrintReaperBanner())8}9import (10func main() {11	fmt.Println(testcontainers.PrintReaperBanner())12}13import (14func main() {15	fmt.Println(testcontainers.PrintReaperBanner())16}17import (18func main() {19	fmt.Println(testcontainers.PrintReaperBanner())20}21import (22func main() {23	fmt.Println(testcontainers.PrintReaperBanner())24}25import (26func main() {27	fmt.Println(testcontainers.PrintReaperBanner())28}29import (30func main() {31	fmt.Println(testcontainers.PrintReaperBanner())32}33import (34func main() {35	fmt.Println(testcontainers.PrintReaperBanner())36}37import (38func main()

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