aws-delivlib
Version:
A fabulous library for defining continuous pipelines for building, testing and releasing code libraries.
94 lines • 11.2 kB
JavaScript
;
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var __importStar = (this && this.__importStar) || function (mod) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.PipelineWatcher = void 0;
const path = __importStar(require("path"));
const aws_cdk_lib_1 = require("aws-cdk-lib");
const constructs_1 = require("constructs");
/**
* Construct which watches a Code Pipeline for failed stages and raises an alarm
* if there are any failed stages.
*
* A function runs every minute and calls GetPipelineState for the provided pipeline's
* name, counts the number of failed stages and emits a JSON log { failedCount: <number> }.
* A metric filter is then configured to track this value as a CloudWatch metric, and
* a corresponding alarm is set to fire when the maximim value of a single 5-minute interval
* is >= 1.
*/
class PipelineWatcher extends constructs_1.Construct {
constructor(parent, name, props) {
super(parent, name);
const pipelineWatcher = new aws_cdk_lib_1.aws_lambda.Function(this, 'Poller', {
handler: 'watcher-handler.handler',
runtime: aws_cdk_lib_1.aws_lambda.Runtime.NODEJS_20_X,
code: aws_cdk_lib_1.aws_lambda.Code.fromAsset(path.join(__dirname, 'handler')),
environment: {
METRIC_NAMESPACE: props.metricNamespace,
METRIC_NAME: props.failureMetricName,
},
});
pipelineWatcher.addToRolePolicy(new aws_cdk_lib_1.aws_iam.PolicyStatement({
resources: ['*'],
actions: ['cloudwatch:PutMetricData'],
conditions: {
StringEquals: {
'cloudwatch:namespace': props.metricNamespace,
},
},
}));
new aws_cdk_lib_1.aws_events.Rule(this, 'Trigger', {
eventPattern: {
source: ['aws.codepipeline'],
resources: [props.pipeline.pipelineArn],
detailType: [
'CodePipeline Action Execution State Change',
'CodePipeline Pipeline Execution State Change',
],
detail: {
state: ['FAILED', 'SUCCEEDED'],
},
},
targets: [new aws_cdk_lib_1.aws_events_targets.LambdaFunction(pipelineWatcher)],
});
this.alarm = new aws_cdk_lib_1.aws_cloudwatch.Alarm(this, 'Alarm', {
alarmDescription: `Pipeline ${props.title || props.pipeline.pipelineName} has failed stages`,
metric: new aws_cdk_lib_1.aws_cloudwatch.Metric({
metricName: props.failureMetricName,
namespace: props.metricNamespace,
statistic: aws_cdk_lib_1.aws_cloudwatch.Statistic.MAXIMUM,
dimensionsMap: {
Pipeline: props.pipeline.pipelineName,
},
}),
threshold: 1,
comparisonOperator: aws_cdk_lib_1.aws_cloudwatch.ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD,
evaluationPeriods: 1,
// IGNORE missing data, so the alarm stays in its current state, until the next data point.
treatMissingData: aws_cdk_lib_1.aws_cloudwatch.TreatMissingData.IGNORE,
});
}
}
exports.PipelineWatcher = PipelineWatcher;
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