CDK Construct library for higher-level ECS Constructs
This library provides higher-level ECS constructs which follow common architectural patterns. It contains:
- Load Balanced Services
- Queue Worker Services
- Scheduled Tasks (cron jobs)
Load Balanced Services
To define a service that is behind a load balancer, instantiate one of the following:
LoadBalancedEc2Service
const loadBalancedEcsService = new ecsPatterns.LoadBalancedEc2Service(stack, 'Service', {
cluster,
memoryLimitMiB: 1024,
image: ecs.ContainerImage.fromRegistry('test'),
desiredCount: 2,
environment: {
TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
}
});
LoadBalancedFargateService
const loadBalancedFargateService = new ecsPatterns.LoadBalancedFargateService(stack, 'Service', {
cluster,
memoryMiB: '1GB',
cpu: '512',
image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
});
Queue Worker Services
To define a service that creates a queue and reads from that queue, instantiate one of the following:
Ec2QueueWorkerService
const ecsQueueWorkerService = new Ec2QueueWorkerService(stack, 'Service', {
cluster,
memoryLimitMiB: 1024,
image: ecs.ContainerImage.fromRegistry('test'),
command: ["-c", "4", "amazon.com"],
enableLogging: false,
desiredTaskCount: 2,
environment: {
TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
},
queue,
maxScalingCapacity: 5
});
FargateQueueWorkerService
const fargateQueueWorkerService = new FargateQueueWorkerService(stack, 'Service', {
cluster,
memoryMiB: '512',
image: ecs.ContainerImage.fromRegistry('test'),
command: ["-c", "4", "amazon.com"],
enableLogging: false,
desiredTaskCount: 2,
environment: {
TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
},
queue,
maxScalingCapacity: 5
});
Scheduled Tasks
To define a task that runs periodically, instantiate an ScheduledEc2Task:
// Instantiate an Amazon EC2 Task to run at a scheduled interval
const ecsScheduledTask = new ScheduledEc2Task(this, 'ScheduledTask', {
cluster,
image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
scheduleExpression: 'rate(1 minute)',
environment: [{ name: 'TRIGGER', value: 'CloudWatch Events' }],
memoryLimitMiB: 256
});
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