Consul¶

Introduction¶

The Testcontainers module for Consul.

Adding this module to your project dependencies¶

Please run the following command to add the Consul module to your Go dependencies:

go get github.com/testcontainers/testcontainers-go/modules/consul

Usage example¶

Creating a Consul container

ctx := context.Background()

consulContainer, err := consul.Run(ctx, "hashicorp/consul:1.15")
defer func() {
    if err := testcontainers.TerminateContainer(consulContainer); err != nil {
        log.Printf("failed to terminate container: %s", err)
    }
}()
if err != nil {
    log.Printf("failed to start container: %s", err)
    return
}

Module Reference¶

Run function¶

Since v0.32.0

Info

The RunContainer(ctx, opts...) function is deprecated and will be removed in the next major release of Testcontainers for Go.

The Consul module exposes one entrypoint function to create the Consul container, and this function receives three parameters:

func Run(ctx context.Context, img string, opts ...testcontainers.ContainerCustomizer) (*ConsulContainer, error)

context.Context, the Go context.
string, the Docker image to use.
testcontainers.ContainerCustomizer, a variadic argument for passing options.

Image¶

Use the second argument in the Run function to set a valid Docker image. In example: Run(context.Background(), "hashicorp/consul:1.15").

Container Options¶

When starting the Consul container, you can pass options in a variadic way to configure it.

Configuration File¶

Since v0.28.0

If you need to customize the behavior for the deployed node you can use either WithConfigString(config string) or WithConfigFile(configPath string). The configuration has to be in JSON format and will be loaded at the node startup.

The following options are exposed by the testcontainers package.

Basic Options¶

WithExposedPorts Since v0.37.0
WithEnv Since v0.29.0
WithWaitStrategy Since v0.20.0
WithAdditionalWaitStrategy Since v0.38.0
WithWaitStrategyAndDeadline Since v0.20.0
WithAdditionalWaitStrategyAndDeadline Since v0.38.0
WithEntrypoint Since v0.37.0
WithEntrypointArgs Since v0.37.0
WithCmd Since v0.37.0
WithCmdArgs Since v0.37.0
WithLabels Since v0.37.0

Lifecycle Options¶

WithLifecycleHooks Since v0.38.0
WithAdditionalLifecycleHooks Since v0.38.0
WithStartupCommand Since v0.25.0
WithAfterReadyCommand Since v0.28.0

Files & Mounts Options¶

Build Options¶

WithDockerfile Since v0.37.0

Logging Options¶

Image Options¶

Networking Options¶

Advanced Options¶

WithHostPortAccess Since v0.31.0
WithConfigModifier Since v0.20.0
WithHostConfigModifier Since v0.20.0
WithEndpointSettingsModifier Since v0.20.0
CustomizeRequest Since v0.20.0
WithName Since v0.38.0
WithNoStart Since v0.38.0
WithProvider Since v0.39.0

Experimental Options¶

WithReuseByName Since v0.37.0

Container Methods¶

The Consul container exposes the following method:

ApiEndpoint¶

Since v0.28.0

This method returns the connection string to connect to the Consul container API, using the default 8500 port.

Using ApiEndpoint with the Consul client

ctx := context.Background()

consulContainer, err := consul.Run(ctx, "hashicorp/consul:1.15")
defer func() {
    if err := testcontainers.TerminateContainer(consulContainer); err != nil {
        log.Printf("failed to terminate container: %s", err)
    }
}()
if err != nil {
    log.Printf("failed to start container: %s", err)
    return
}

endpoint, err := consulContainer.ApiEndpoint(ctx)
if err != nil {
    log.Printf("failed to get endpoint: %s", err)
    return
}

config := capi.DefaultConfig()
config.Address = endpoint
client, err := capi.NewClient(config)
if err != nil {
    log.Printf("failed to connect to Consul: %s", err)
    return
}