@wheatstalk/cdk-crashy-task-metrics/lib/it/it-lit.js

Create metrics and alarms for ECS tasks that stop for reasons other than scaling activities. (i.e., crashes.)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ItLit = void 0;
const cloudwatch = require("@aws-cdk/aws-cloudwatch");
const ecs = require("@aws-cdk/aws-ecs");
const cdk = require("@aws-cdk/core");
const crashy_task_metrics_1 = require("../crashy-task-metrics");
/** @internal */
class ItLit extends cdk.Stack {
    constructor(scope_, props = {}) {
        super(scope_, 'ItLit', props);
        const cluster = new ecs.Cluster(this, 'Cluster');
        const taskDefinition = new ecs.FargateTaskDefinition(this, 'TaskDefinition', {
            cpu: 256,
            memoryLimitMiB: 512,
        });
        // A crashy container
        taskDefinition.addContainer('crashy', {
            image: ecs.ContainerImage.fromRegistry('alpine:3'),
            command: ['sh', '-c', 'sleep 5 && exit 1'],
        });
        const service = new ecs.FargateService(this, 'Service', {
            cluster,
            taskDefinition,
            desiredCount: 0,
            minHealthyPercent: 0,
            maxHealthyPercent: 500,
        });
        const scope = this;
        // ::SNIP
        const crashyTaskMetrics = new crashy_task_metrics_1.CrashyTaskMetrics(scope, 'ServiceMetrics', {
            service,
        });
        const crashAlarm = crashyTaskMetrics
            // Two crashes in five minutes
            .metricTaskCrashes({ period: cdk.Duration.minutes(5) })
            .createAlarm(scope, 'CrashAlarm', {
            comparisonOperator: cloudwatch.ComparisonOperator.GREATER_THAN_THRESHOLD,
            evaluationPeriods: 1,
            threshold: 2,
            treatMissingData: cloudwatch.TreatMissingData.NOT_BREACHING,
        });
        // ::END-SNIP
        new cdk.CfnOutput(this, 'CrashAlarmName', {
            value: crashAlarm.alarmName,
        });
    }
}
exports.ItLit = ItLit;
if (!module.parent) {
    const app = new cdk.App();
    new ItLit(app, {
        env: {
            account: process.env.CDK_DEFAULT_ACCOUNT,
            region: process.env.CDK_DEFAULT_REGION,
        },
    });
}
/**
 * To test,
 */ 
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