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Showing content from https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_DeploymentLifecycleHook.html below:

DeploymentLifecycleHook

A deployment lifecycle hook runs custom logic at specific stages of the deployment process. Currently, you can use Lambda functions as hook targets.

For more information, see Lifecycle hooks for Amazon ECS service deployments in the Amazon Elastic Container Service Developer Guide.

Contents

hookTargetArn

The Amazon Resource Name (ARN) of the hook target. Currently, only Lambda function ARNs are supported.

You must provide this parameter when configuring a deployment lifecycle hook.

Type: String

Required: No

lifecycleStages

The lifecycle stages at which to run the hook. Choose from these valid values:

RECONCILE_SERVICE

The reconciliation stage that only happens when you start a new service deployment with more than 1 service revision in an ACTIVE state.

You can use a lifecycle hook for this stage.
PRE_SCALE_UP

The green service revision has not started. The blue service revision is handling 100% of the production traffic. There is no test traffic.

You can use a lifecycle hook for this stage.
POST_SCALE_UP

The green service revision has started. The blue service revision is handling 100% of the production traffic. There is no test traffic.

You can use a lifecycle hook for this stage.
TEST_TRAFFIC_SHIFT

The blue and green service revisions are running. The blue service revision handles 100% of the production traffic. The green service revision is migrating from 0% to 100% of test traffic.

You can use a lifecycle hook for this stage.
POST_TEST_TRAFFIC_SHIFT

The test traffic shift is complete. The green service revision handles 100% of the test traffic.

You can use a lifecycle hook for this stage.
PRODUCTION_TRAFFIC_SHIFT

Production traffic is shifting to the green service revision. The green service revision is migrating from 0% to 100% of production traffic.

You can use a lifecycle hook for this stage.
POST_PRODUCTION_TRAFFIC_SHIFT

The production traffic shift is complete.

You can use a lifecycle hook for this stage.

You must provide this parameter when configuring a deployment lifecycle hook.

Type: Array of strings

Required: No

roleArn

The Amazon Resource Name (ARN) of the IAM role that grants Amazon ECS permission to call Lambda functions on your behalf.

For more information, see Permissions required for Lambda functions in Amazon ECS blue/green deployments in the Amazon Elastic Container Service Developer Guide.

Type: String

Required: No