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integ.sqs.ts
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integ.sqs.ts
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import cdk = require("aws-cdk-lib");
import { Construct } from 'constructs';
import * as ec2 from "aws-cdk-lib/aws-ec2";
import * as ecr from "aws-cdk-lib/aws-ecr";
import * as ecs from "aws-cdk-lib/aws-ecs";
import * as sqs from "aws-cdk-lib/aws-sqs";
import * as iam from "aws-cdk-lib/aws-iam";
import * as logs from "aws-cdk-lib/aws-logs";
import * as asg from "aws-cdk-lib/aws-autoscaling";
import * as apigw from "aws-cdk-lib/aws-apigateway";
import { VpcProvider } from '../vpc';
export interface EcsScalingBySqsStackProps extends cdk.StackProps {
}
export class EcsScalingBySqsStack extends cdk.Stack {
constructor(scope: Construct, id: string, props: EcsScalingBySqsStackProps) {
super(scope, id, props);
const vpc = ec2.Vpc.fromLookup(this, 'ExistingVPC', { vpcName: 'vpcSample/Vpc' }) || VpcProvider.createSimple(this);
const messageQueue = new sqs.Queue(this, 'queue', {
visibilityTimeout: cdk.Duration.seconds(300)
});
// iam
const taskRole = new iam.Role(this, 'ecs-task-role', {
roleName: 'AmazonECSTaskRoleForSqsScaling',
assumedBy: new iam.ServicePrincipal('ecs-tasks.amazonaws.com')
});
taskRole.attachInlinePolicy(
new iam.Policy(this, "sqs-full-access", {
statements: [
new iam.PolicyStatement({
actions: ["sqs:*"],
effect: iam.Effect.ALLOW,
resources: [ messageQueue.queueArn ],
})
],
})
);
taskRole.attachInlinePolicy(
new iam.Policy(this, "send-cw-logs", {
statements: [
new iam.PolicyStatement({
actions: [
"logs:CreateLogGroup",
"logs:CreateLogStream",
"logs:PutLogEvents",
"logs:DescribeLogStreams"
],
effect: iam.Effect.ALLOW,
resources: [ "arn:aws:logs:*:*:*" ],
})
],
})
);
const credentialsRole = new iam.Role(this, "Role", {
assumedBy: new iam.ServicePrincipal("apigateway.amazonaws.com"),
});
credentialsRole.attachInlinePolicy(
new iam.Policy(this, "send-queue-message", {
statements: [
new iam.PolicyStatement({
actions: ["sqs:SendMessage"],
effect: iam.Effect.ALLOW,
resources: [messageQueue.queueArn],
}),
],
})
);
// API Gateway
// https://${APIGW_ID}.execute-api.us-east-1.amazonaws.com/run/queue?message=test
const api = new apigw.RestApi(this, "api-gateway", {
restApiName: 'send-message-queue-with-ecs-scaling',
deployOptions: {
stageName: "run",
tracingEnabled: true,
},
});
const resourceQueue = api.root.addResource("queue");
resourceQueue.addMethod(
"GET",
new apigw.AwsIntegration({
service: "sqs",
path: `${cdk.Aws.ACCOUNT_ID}/${messageQueue.queueName}`,
integrationHttpMethod: "POST",
options: {
credentialsRole,
passthroughBehavior: apigw.PassthroughBehavior.NEVER,
requestParameters: {
"integration.request.header.Content-Type": `'application/x-www-form-urlencoded'`,
},
requestTemplates: {
"application/json": `Action=SendMessage&MessageBody=$util.urlEncode("$method.request.querystring.message")`,
},
integrationResponses: [
{
statusCode: "200",
responseTemplates: {
"application/json": `{"done": true}`,
},
},
],
},
}),
{ methodResponses: [{ statusCode: "200" }] }
);
// ecs
const cluster = new ecs.Cluster(this, 'EcsCluster', { vpc });
const taskDefinition = new ecs.FargateTaskDefinition(this, "task-definition", {
memoryLimitMiB: 4096,
cpu: 2048,
taskRole
});
const logging = new ecs.AwsLogDriver({
streamPrefix: "task",
logGroup: new logs.LogGroup(this, "LogGroup", {
logGroupName: "/aws/ecs/scalingBySqs",
retention: logs.RetentionDays.ONE_MONTH
})
});
// Container image from https://github.com/shazi7804/container-samples/
const repository = ecr.Repository.fromRepositoryName(this, 'repo', 'python-message-queue-consumer');
const container = taskDefinition.addContainer('python-message-queue-consumer', {
image: ecs.ContainerImage.fromEcrRepository(repository, 'latest'),
memoryLimitMiB: 256,
cpu: 256,
logging
});
const service = new ecs.FargateService(this, "task-service", {
cluster,
taskDefinition: taskDefinition,
desiredCount: 0,
});
const serviceScaling = service.autoScaleTaskCount({
minCapacity: 0,
maxCapacity: 50,
});
serviceScaling.scaleOnMetric("scaling-initial-by-queue-metric", {
metric: messageQueue.metricApproximateNumberOfMessagesVisible(),
adjustmentType: asg.AdjustmentType.CHANGE_IN_CAPACITY,
evaluationPeriods: 1,
cooldown: cdk.Duration.seconds(60),
scalingSteps: [
{ upper: 0, change: -1 },
{ lower: 1, change: +1 },
{ lower: 5, change: +3 },
{ lower: 10, change: +5 },
],
});
serviceScaling.scaleOnMetric("scaling-high-by-queue-metric", {
metric: messageQueue.metricApproximateNumberOfMessagesVisible(),
adjustmentType: asg.AdjustmentType.PERCENT_CHANGE_IN_CAPACITY,
cooldown: cdk.Duration.seconds(60),
scalingSteps: [
{ upper: 10, change: -10 },
{ lower: 15, change: +67 },
],
});
}
}