public constructor()

in src/backend/inventory/index.ts [48:109]
57 lines of code
1 McCabe index (conditional complexity)

  public constructor(scope: Construct, id: string, props: InventoryProps) {
    super(scope, id);

    this.rate = props.scheduleRate ?? Duration.minutes(15);

    this.canary = new Canary(this, 'Resource', {
      description: '[ConstructHub/Inventory] A canary that periodically inspects the list of indexed packages',
      environment: {
        AWS_EMF_ENVIRONMENT: 'Local',
        BUCKET_NAME: props.bucket.bucketName,
      },
      logRetention: props.logRetention,
      memorySize: 10_240,
      timeout: this.rate,
    });
    const grantRead = props.bucket.grantRead(this.canary);
    const grantWriteMissing = props.bucket.grantWrite(this.canary, MISSING_DOCUMENTATION_REPORT_PATTERN);
    const grantWriteCorruptAssembly = props.bucket.grantWrite(this.canary, CORRUPT_ASSEMBLY_REPORT_PATTERN);
    const grantWriteUnInstallable = props.bucket.grantWrite(this.canary, UNINSTALLABLE_PACKAGES_REPORT);

    const rule = new Rule(this, 'ScheduleRule', {
      schedule: Schedule.rate(this.rate),
      targets: [new LambdaFunction(this.canary)],
    });

    rule.node.addDependency(grantRead, grantWriteMissing);
    rule.node.addDependency(grantRead, grantWriteCorruptAssembly);
    rule.node.addDependency(grantRead, grantWriteUnInstallable);

    props.monitoring.addLowSeverityAlarm(
      'Inventory Canary is not Running',
      this.canary.metricInvocations({ period: this.rate }).createAlarm(this, 'Not Running', {
        alarmName: `${this.node.path}/NotRunning`,
        alarmDescription: [
          'The inventory canary is not running!',
          '',
          `RunBook: ${RUNBOOK_URL}`,
          '',
          `Direct link to function: ${lambdaFunctionUrl(this.canary)}`,
        ].join('\n'),
        comparisonOperator: ComparisonOperator.LESS_THAN_THRESHOLD,
        evaluationPeriods: 1,
        threshold: 1,
      }),
    );
    props.monitoring.addLowSeverityAlarm(
      'Inventory Canary is failing',
      this.canary.metricErrors({ period: this.rate }).createAlarm(this, 'Failures', {
        alarmName: `${this.node.path}/Failures`,
        alarmDescription: [
          'The inventory canary is failing!',
          '',
          `RunBook: ${RUNBOOK_URL}`,
          '',
          `Direct link to function: ${lambdaFunctionUrl(this.canary)}`,
        ].join('\n'),
        comparisonOperator: ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD,
        evaluationPeriods: 2,
        threshold: 1,
      }),
    );
  }