ScheduledFargateTask

class aws_cdk.aws_ecs_patterns.ScheduledFargateTask(scope, id, *, scheduled_fargate_task_definition_options=None, scheduled_fargate_task_image_options=None, schedule, cluster=None, desired_task_count=None, enabled=None, rule_name=None, security_groups=None, subnet_selection=None, vpc=None, cpu=None, memory_limit_mib=None, platform_version=None, runtime_platform=None, task_definition=None)

Bases: aws_cdk.aws_ecs_patterns.ScheduledTaskBase

A scheduled Fargate task that will be initiated off of CloudWatch Events.

ExampleMetadata

infused

Example:

# cluster: ecs.Cluster

scheduled_fargate_task = ecs_patterns.ScheduledFargateTask(self, "ScheduledFargateTask",
    cluster=cluster,
    scheduled_fargate_task_image_options=ecsPatterns.ScheduledFargateTaskImageOptions(
        image=ecs.ContainerImage.from_registry("amazon/amazon-ecs-sample"),
        memory_limit_mi_b=512
    ),
    schedule=appscaling.Schedule.expression("rate(1 minute)"),
    platform_version=ecs.FargatePlatformVersion.LATEST
)

Constructs a new instance of the ScheduledFargateTask class.

Parameters
  • scope (Construct) –

  • id (str) –

  • scheduled_fargate_task_definition_options (Union[ScheduledFargateTaskDefinitionOptions, Dict[str, Any], None]) – The properties to define if using an existing TaskDefinition in this construct. ScheduledFargateTaskDefinitionOptions or ScheduledFargateTaskImageOptions must be defined, but not both. Default: none

  • scheduled_fargate_task_image_options (Union[ScheduledFargateTaskImageOptions, Dict[str, Any], None]) – The properties to define if the construct is to create a TaskDefinition. ScheduledFargateTaskDefinitionOptions or ScheduledFargateTaskImageOptions must be defined, but not both. Default: none

  • schedule (Schedule) – The schedule or rate (frequency) that determines when CloudWatch Events runs the rule. For more information, see Schedule Expression Syntax for Rules in the Amazon CloudWatch User Guide.

  • 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.

  • desired_task_count (Union[int, float, None]) – The desired number of instantiations of the task definition to keep running on the service. Default: 1

  • enabled (Optional[bool]) – Indicates whether the rule is enabled. Default: true

  • rule_name (Optional[str]) – A name for the rule. Default: - AWS CloudFormation generates a unique physical ID and uses that ID for the rule name. For more information, see Name Type.

  • security_groups (Optional[Sequence[ISecurityGroup]]) – Existing security groups to use for your service. Default: - a new security group will be created.

  • subnet_selection (Union[SubnetSelection, Dict[str, Any], None]) – In what subnets to place the task’s ENIs. (Only applicable in case the TaskDefinition is configured for AwsVpc networking) Default: Private subnets

  • 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.

  • cpu (Union[int, float, None]) – The number of cpu units used by the task. Valid values, which determines your range of valid values for the memory parameter: 256 (.25 vCPU) - Available memory values: 0.5GB, 1GB, 2GB 512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB 1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB 2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments 4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments This default is set in the underlying FargateTaskDefinition construct. Default: 256

  • memory_limit_mib (Union[int, float, None]) – The amount (in MiB) of memory used by the task. This field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter: 512 (0.5 GB), 1024 (1 GB), 2048 (2 GB) - Available cpu values: 256 (.25 vCPU) 1024 (1 GB), 2048 (2 GB), 3072 (3 GB), 4096 (4 GB) - Available cpu values: 512 (.5 vCPU) 2048 (2 GB), 3072 (3 GB), 4096 (4 GB), 5120 (5 GB), 6144 (6 GB), 7168 (7 GB), 8192 (8 GB) - Available cpu values: 1024 (1 vCPU) Between 4096 (4 GB) and 16384 (16 GB) in increments of 1024 (1 GB) - Available cpu values: 2048 (2 vCPU) Between 8192 (8 GB) and 30720 (30 GB) in increments of 1024 (1 GB) - Available cpu values: 4096 (4 vCPU) This default is set in the underlying FargateTaskDefinition construct. Default: 512

  • platform_version (Optional[FargatePlatformVersion]) – The platform version on which to run your service. If one is not specified, the LATEST platform version is used by default. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide. Default: Latest

  • runtime_platform (Union[RuntimePlatform, Dict[str, Any], None]) – The runtime platform of the task definition. Default: - If the property is undefined, operatingSystemFamily is LINUX and cpuArchitecture is X86_64

  • task_definition (Optional[FargateTaskDefinition]) – The task definition to use for tasks in the service. TaskDefinition or TaskImageOptions must be specified, but not both. [disable-awslint:ref-via-interface] Default: - none

Methods

to_string()

Returns a string representation of this construct.

Return type

str

Attributes

cluster

The name of the cluster that hosts the service.

Return type

ICluster

desired_task_count

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

The minimum value is 1

Return type

Union[int, float]

event_rule

The CloudWatch Events rule for the service.

Return type

Rule

node

The tree node.

Return type

Node

subnet_selection

In what subnets to place the task’s ENIs.

(Only applicable in case the TaskDefinition is configured for AwsVpc networking)

Default

Private subnets

Return type

SubnetSelection

task

The ECS task in this construct.

Return type

EcsTask

task_definition

The Fargate task definition in this construct.

Return type

FargateTaskDefinition

Static Methods

classmethod is_construct(x)

Checks if x is a construct.

Use this method instead of instanceof to properly detect Construct instances, even when the construct library is symlinked.

Explanation: in JavaScript, multiple copies of the constructs library on disk are seen as independent, completely different libraries. As a consequence, the class Construct in each copy of the constructs library is seen as a different class, and an instance of one class will not test as instanceof the other class. npm install will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the constructs library can be accidentally installed, and instanceof will behave unpredictably. It is safest to avoid using instanceof, and using this type-testing method instead.

Parameters

x (Any) – Any object.

Return type

bool

Returns

true if x is an object created from a class which extends Construct.