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Add CloudWatch alarm for backup verification Lambda errors

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Fires on any Lambda error and on missing data (missed schedule).
Catches silent failures where the Slack notification never fires.
This commit is contained in:
Adam Moussa 2026-05-15 17:31:32 -04:00
parent 4d9c30fbb3
commit 76fd73a69f
1 changed files with 11 additions and 0 deletions
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11
lib/constructs/backup-verification.ts
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@ -1,4 +1,5 @@
import * as cdk from "aws-cdk-lib"; import * as cdk from "aws-cdk-lib";
import * as cloudwatch from "aws-cdk-lib/aws-cloudwatch";
import * as events from "aws-cdk-lib/aws-events"; import * as events from "aws-cdk-lib/aws-events";
import * as events_targets from "aws-cdk-lib/aws-events-targets"; import * as events_targets from "aws-cdk-lib/aws-events-targets";
import * as iam from "aws-cdk-lib/aws-iam"; import * as iam from "aws-cdk-lib/aws-iam";
@ -95,5 +96,15 @@ export class BackupVerification extends Construct {
}), }),
], ],
}); });
new cloudwatch.Alarm(this, "ErrorAlarm", {
alarmName: "forgejo-backup-verification-errors",
alarmDescription: "Backup verification Lambda is failing — Slack notifications may not be firing",
metric: fn.metricErrors({ period: cdk.Duration.hours(1) }),
threshold: 1,
evaluationPeriods: 1,
treatMissingData: cloudwatch.TreatMissingData.BREACHING,
comparisonOperator: cloudwatch.ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD,
});
} }
} }