@gammarers/aws-log-stream-event-notification-stack/lib/index.js

This AWS CDK construct stack subscribes to a CloudWatch Logs log stream, and when a target log level is detected, it sends the log information to a Step Functions state machine via a Lambda function. The state machine processes and formats the log informa

"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LogStreamEventNotificationStack = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const aws_log_stream_event_notifier_1 = require("@gammarers/aws-log-stream-event-notifier");
const aws_log_stream_event_trigger_1 = require("@gammarers/aws-log-stream-event-trigger");
const aws_cdk_lib_1 = require("aws-cdk-lib");
const logs = require("aws-cdk-lib/aws-logs");
const destinations = require("aws-cdk-lib/aws-logs-destinations");
const sns = require("aws-cdk-lib/aws-sns");
const subscriptions = require("aws-cdk-lib/aws-sns-subscriptions");
class LogStreamEventNotificationStack extends aws_cdk_lib_1.Stack {
    constructor(scope, id, props) {
        super(scope, id, props);
        // 👇 SNS Topic for notifications
        const topic = new sns.Topic(this, 'NotificationTopic');
        // 👇 Subscribe an email endpoint to the topic
        const emails = props?.notification?.emails ?? [];
        for (const email of emails) {
            topic.addSubscription(new subscriptions.EmailSubscription(email));
        }
        const trigger = new aws_log_stream_event_trigger_1.LogStreamEventTrigger(this, 'LogStreamEventTrigger');
        new aws_log_stream_event_notifier_1.LogStreamEventNotifier(this, 'LogStreamEventNotifier', {
            notificationTopic: topic,
            requestFunction: trigger.logStreamSubscriptionFilterDestinationFunction,
        });
        const logGroupNames = props?.logGroupNames ?? [];
        for (const logGroupName of logGroupNames) {
            const prefix = logGroupName
                .split('/')
                .map(word => word.charAt(0).toUpperCase() + word.slice(1).toLocaleLowerCase())
                .join('');
            const logGroup = logs.LogGroup.fromLogGroupName(this, `${prefix}LogGroup`, logGroupName);
            new logs.SubscriptionFilter(this, `${prefix}LogGroupSubscription`, {
                logGroup,
                destination: new destinations.LambdaDestination(trigger.logStreamSubscriptionFilterDestinationFunction),
                filterPattern: logs.FilterPattern.any(logs.FilterPattern.stringValue('$.level', '=', 'ERROR'), logs.FilterPattern.stringValue('$.level', '=', 'WARN')),
            });
        }
    }
}
exports.LogStreamEventNotificationStack = LogStreamEventNotificationStack;
_a = JSII_RTTI_SYMBOL_1;
LogStreamEventNotificationStack[_a] = { fqn: "@gammarers/aws-log-stream-event-notification-stack.LogStreamEventNotificationStack", version: "1.0.31" };
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MuRmlsdGVyUGF0dGVybi5hbnkoXG4gICAgICAgICAgbG9ncy5GaWx0ZXJQYXR0ZXJuLnN0cmluZ1ZhbHVlKCckLmxldmVsJywgJz0nLCAnRVJST1InKSxcbiAgICAgICAgICBsb2dzLkZpbHRlclBhdHRlcm4uc3RyaW5nVmFsdWUoJyQubGV2ZWwnLCAnPScsICdXQVJOJyksXG4gICAgICAgICksXG4gICAgICB9KTtcbiAgICB9XG5cbiAgfVxufSJdfQ==