DynamoDB¶

Introduction¶

The Testcontainers module for DynamoDB.

Adding this module to your project dependencies¶

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

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

Usage example¶

Creating a DynamoDB container

ctx := context.Background()

ctr, err := tcdynamodb.Run(ctx, "amazon/dynamodb-local:2.2.1")
defer func() {
    if err := testcontainers.TerminateContainer(ctr); err != nil {
        log.Printf("failed to terminate container: %s", err)
    }
}()
if err != nil {
    log.Printf("failed to run dynamodb container: %s", err)
    return
}

Module Reference¶

Run function¶

Since v0.34.0

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

func Run(ctx context.Context, img string, opts ...testcontainers.ContainerCustomizer) (*DynamoDBContainer, 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(), "amazon/dynamodb-local:2.2.1").

Container Options¶

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

WithSharedDB¶

Since v0.34.0

The WithSharedDB option tells the DynamoDB container to use a single database file. At the same time, it marks the container as reusable, which causes that successive calls to the Run function will return the same container instance, and therefore, the same database file.

WithDisableTelemetry¶

Since v0.34.0

You can turn off telemetry when starting the DynamoDB container, using the option WithDisableTelemetry.

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 DynamoDB container exposes the following methods:

ConnectionString¶

Since v0.34.0

The ConnectionString method returns the connection string to the DynamoDB container. This connection string can be used to connect to the DynamoDB container from your application, using the AWS SDK or any other DynamoDB client of your choice.

Creating a client

var errs []error

hostPort, err := c.ConnectionString(context.Background())
if err != nil {
    errs = append(errs, fmt.Errorf("get connection string: %w", err))
}

cfg, err := config.LoadDefaultConfig(context.Background(), config.WithCredentialsProvider(credentials.StaticCredentialsProvider{
    Value: aws.Credentials{
        AccessKeyID:     "DUMMYIDEXAMPLE",
        SecretAccessKey: "DUMMYEXAMPLEKEY",
    },
}))
if err != nil {
    errs = append(errs, fmt.Errorf("load default config: %w", err))
}

require.NoError(t, errors.Join(errs...))

return dynamodb.NewFromConfig(cfg, dynamodb.WithEndpointResolverV2(&dynamoDBResolver{HostPort: hostPort}))

The above example uses github.com/aws/aws-sdk-go-v2/service/dynamodb to create a client and connect to the DynamoDB container.