QueueProcessingServiceBaseProps

class aws_cdk.aws_ecs_patterns.QueueProcessingServiceBaseProps(*, image, capacity_provider_strategies=None, circuit_breaker=None, cluster=None, command=None, deployment_controller=None, desired_task_count=None, enable_ecs_managed_tags=None, enable_logging=None, environment=None, family=None, log_driver=None, max_healthy_percent=None, max_receive_count=None, max_scaling_capacity=None, min_healthy_percent=None, min_scaling_capacity=None, propagate_tags=None, queue=None, retention_period=None, scaling_steps=None, secrets=None, service_name=None, visibility_timeout=None, vpc=None)

Bases: object

The properties for the base QueueProcessingEc2Service or QueueProcessingFargateService service.

Parameters

  • image (ContainerImage) – The image used to start a container.

  • capacity_provider_strategies (Optional[Sequence[CapacityProviderStrategy]]) – A list of Capacity Provider strategies used to place a service. Default: - undefined

  • circuit_breaker (Optional[DeploymentCircuitBreaker]) – Whether to enable the deployment circuit breaker. If this property is defined, circuit breaker will be implicitly enabled. Default: - disabled

  • cluster (Optional[ICluster]) – The name of the cluster that hosts the service. If a cluster is specified, the vpc construct should be omitted. Alternatively, you can omit both cluster and vpc. Default: - create a new cluster; if both cluster and vpc are omitted, a new VPC will be created for you.

  • command (Optional[Sequence[str]]) – The command that is passed to the container. If you provide a shell command as a single string, you have to quote command-line arguments. Default: - CMD value built into container image.

  • deployment_controller (Optional[DeploymentController]) – Specifies which deployment controller to use for the service. For more information, see Amazon ECS Deployment Types Default: - Rolling update (ECS)

  • desired_task_count (Union[int, float, None]) – (deprecated) The desired number of instantiations of the task definition to keep running on the service. Default: - If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is 1; if true, the minScalingCapacity is 1 for all new services and uses the existing services desired count when updating an existing service.

  • enable_ecs_managed_tags (Optional[bool]) – Specifies whether to enable Amazon ECS managed tags for the tasks within the service. For more information, see Tagging Your Amazon ECS Resources Default: false

  • enable_logging (Optional[bool]) – Flag to indicate whether to enable logging. Default: true

  • environment (Optional[Mapping[str, str]]) – The environment variables to pass to the container. The variable QUEUE_NAME with value queue.queueName will always be passed. Default: ‘QUEUE_NAME: queue.queueName’

  • family (Optional[str]) – The name of a family that the task definition is registered to. A family groups multiple versions of a task definition. Default: - Automatically generated name.

  • log_driver (Optional[LogDriver]) – The log driver to use. Default: - AwsLogDriver if enableLogging is true

  • max_healthy_percent (Union[int, float, None]) – The maximum number of tasks, specified as a percentage of the Amazon ECS service’s DesiredCount value, that can run in a service during a deployment. Default: - default from underlying service.

  • max_receive_count (Union[int, float, None]) – The maximum number of times that a message can be received by consumers. When this value is exceeded for a message the message will be automatically sent to the Dead Letter Queue. Default: 3

  • max_scaling_capacity (Union[int, float, None]) – Maximum capacity to scale to. Default: - If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is (desiredTaskCount * 2); if true, the default is 2.

  • min_healthy_percent (Union[int, float, None]) – The minimum number of tasks, specified as a percentage of the Amazon ECS service’s DesiredCount value, that must continue to run and remain healthy during a deployment. Default: - default from underlying service.

  • min_scaling_capacity (Union[int, float, None]) – Minimum capacity to scale to. Default: - If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is the desiredTaskCount; if true, the default is 1.

  • propagate_tags (Optional[PropagatedTagSource]) – Specifies whether to propagate the tags from the task definition or the service to the tasks in the service. Tags can only be propagated to the tasks within the service during service creation. Default: - none

  • queue (Optional[IQueue]) – A queue for which to process items from. If specified and this is a FIFO queue, the queue name must end in the string ‘.fifo’. See CreateQueue Default: ‘SQSQueue with CloudFormation-generated name’

  • retention_period (Optional[Duration]) – The number of seconds that Dead Letter Queue retains a message. Default: Duration.days(14)

  • scaling_steps (Optional[Sequence[ScalingInterval]]) – The intervals for scaling based on the SQS queue’s ApproximateNumberOfMessagesVisible metric. Maps a range of metric values to a particular scaling behavior. See Simple and Step Scaling Policies for Amazon EC2 Auto Scaling Default: [{ upper: 0, change: -1 },{ lower: 100, change: +1 },{ lower: 500, change: +5 }]

  • secrets (Optional[Mapping[str, Secret]]) – The secret to expose to the container as an environment variable. Default: - No secret environment variables.

  • service_name (Optional[str]) – The name of the service. Default: - CloudFormation-generated name.

  • visibility_timeout (Optional[Duration]) – Timeout of processing a single message. After dequeuing, the processor has this much time to handle the message and delete it from the queue before it becomes visible again for dequeueing by another processor. Values must be between 0 and (12 hours). Default: Duration.seconds(30)

  • vpc (Optional[IVpc]) – The VPC where the container instances will be launched or the elastic network interfaces (ENIs) will be deployed. If a vpc is specified, the cluster construct should be omitted. Alternatively, you can omit both vpc and cluster. Default: - uses the VPC defined in the cluster or creates a new VPC.

Attributes

capacity_provider_strategies

A list of Capacity Provider strategies used to place a service.

Default

  • undefined

Return type

Optional[List[CapacityProviderStrategy]]

circuit_breaker

Whether to enable the deployment circuit breaker.

If this property is defined, circuit breaker will be implicitly enabled.

Default

  • disabled

Return type

Optional[DeploymentCircuitBreaker]

cluster

The name of the cluster that hosts the service.

If a cluster is specified, the vpc construct should be omitted. Alternatively, you can omit both cluster and vpc.

Default

  • create a new cluster; if both cluster and vpc are omitted, a new VPC will be created for you.

Return type

Optional[ICluster]

command

The command that is passed to the container.

If you provide a shell command as a single string, you have to quote command-line arguments.

Default

  • CMD value built into container image.

Return type

Optional[List[str]]

deployment_controller

Specifies which deployment controller to use for the service.

For more information, see Amazon ECS Deployment Types

Default

  • Rolling update (ECS)

Return type

Optional[DeploymentController]

desired_task_count

(deprecated) The desired number of instantiations of the task definition to keep running on the service.

Default

  • If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is 1;

if true, the minScalingCapacity is 1 for all new services and uses the existing services desired count when updating an existing service.

Deprecated

  • Use minScalingCapacity or a literal object instead.

Stability

deprecated

Return type

Union[int, float, None]

enable_ecs_managed_tags

Specifies whether to enable Amazon ECS managed tags for the tasks within the service.

For more information, see Tagging Your Amazon ECS Resources

Default

false

Return type

Optional[bool]

enable_logging

Flag to indicate whether to enable logging.

Default

true

Return type

Optional[bool]

environment

The environment variables to pass to the container.

The variable QUEUE_NAME with value queue.queueName will always be passed.

Default

‘QUEUE_NAME: queue.queueName’

Return type

Optional[Mapping[str, str]]

family

The name of a family that the task definition is registered to.

A family groups multiple versions of a task definition.

Default

  • Automatically generated name.

Return type

Optional[str]

image

The image used to start a container.

Return type

ContainerImage

log_driver

The log driver to use.

Default

  • AwsLogDriver if enableLogging is true

Return type

Optional[LogDriver]

max_healthy_percent

The maximum number of tasks, specified as a percentage of the Amazon ECS service’s DesiredCount value, that can run in a service during a deployment.

Default

  • default from underlying service.

Return type

Union[int, float, None]

max_receive_count

The maximum number of times that a message can be received by consumers.

When this value is exceeded for a message the message will be automatically sent to the Dead Letter Queue.

Default

3

Return type

Union[int, float, None]

max_scaling_capacity

Maximum capacity to scale to.

Default

  • If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is (desiredTaskCount * 2); if true, the default is 2.

Return type

Union[int, float, None]

min_healthy_percent

The minimum number of tasks, specified as a percentage of the Amazon ECS service’s DesiredCount value, that must continue to run and remain healthy during a deployment.

Default

  • default from underlying service.

Return type

Union[int, float, None]

min_scaling_capacity

Minimum capacity to scale to.

Default

  • If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is the desiredTaskCount; if true, the default is 1.

Return type

Union[int, float, None]

propagate_tags

Specifies whether to propagate the tags from the task definition or the service to the tasks in the service.

Tags can only be propagated to the tasks within the service during service creation.

Default

  • none

Return type

Optional[PropagatedTagSource]

queue

A queue for which to process items from.

If specified and this is a FIFO queue, the queue name must end in the string ‘.fifo’. See CreateQueue

Default

‘SQSQueue with CloudFormation-generated name’

Return type

Optional[IQueue]

retention_period

The number of seconds that Dead Letter Queue retains a message.

Default

Duration.days(14)

Return type

Optional[Duration]

scaling_steps

The intervals for scaling based on the SQS queue’s ApproximateNumberOfMessagesVisible metric.

Maps a range of metric values to a particular scaling behavior. See Simple and Step Scaling Policies for Amazon EC2 Auto Scaling

Default

[{ upper: 0, change: -1 },{ lower: 100, change: +1 },{ lower: 500, change: +5 }]

Return type

Optional[List[ScalingInterval]]

secrets

The secret to expose to the container as an environment variable.

Default

  • No secret environment variables.

Return type

Optional[Mapping[str, Secret]]

service_name

The name of the service.

Default

  • CloudFormation-generated name.

Return type

Optional[str]

visibility_timeout

Timeout of processing a single message.

After dequeuing, the processor has this much time to handle the message and delete it from the queue before it becomes visible again for dequeueing by another processor. Values must be between 0 and (12 hours).

Default

Duration.seconds(30)

Return type

Optional[Duration]

vpc

The VPC where the container instances will be launched or the elastic network interfaces (ENIs) will be deployed.

If a vpc is specified, the cluster construct should be omitted. Alternatively, you can omit both vpc and cluster.

Default

  • uses the VPC defined in the cluster or creates a new VPC.

Return type

Optional[IVpc]