constructor()

in src/rds-aurora.ts [57:111]
50 lines of code
1 McCabe index (conditional complexity)

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

    this.watchful = props.watchful;
    this.cluster = props.cluster;
    this.metrics = new RdsAuroraMetricFactory();

    this.watchful.addSection(props.title, {
      links: [
        { title: 'AWS RDS Cluster', url: linkForRDS(this.cluster) },
      ],
    });

    const { cpuUtilizationMetric, cpuUtilizationAlarm } = this.createCpuUtilizationMonitor(props.cpuMaximumThresholdPercent);
    const { dbConnectionsMetric, dbConnectionsAlarm } = this.createDbConnectionsMonitor(props.dbConnectionsMaximumThreshold);
    const { dbReplicaLagMetric, dbReplicaLagAlarm } = this.createDbReplicaLagMonitor(props.dbReplicaLagMaximumThreshold);
    const { dbBufferCacheHitRatioMetric, dbBufferCacheHitRatioAlarm } = this.createDbBufferCacheMonitor(props.dbBufferCacheMinimumThreshold);

    const { dbInsertThroughputMetric, dbUpdateThroughputMetric, dbSelectThroughputMetric, dbDeleteThroughputMetric } =
        this.createDbDmlThroughputMonitor(props.dbThroughputMaximumThreshold);

    this.watchful.addWidgets(
      new cloudwatch.GraphWidget({
        title: `CPUUtilization/${cpuUtilizationMetric.period.toMinutes()}min`,
        width: 6,
        left: [cpuUtilizationMetric],
        leftAnnotations: [cpuUtilizationAlarm.toAnnotation()],
      }),
      new cloudwatch.GraphWidget({
        title: `DB Connections/${dbConnectionsMetric.period.toMinutes()}min`,
        width: 6,
        left: [dbConnectionsMetric],
        leftAnnotations: [dbConnectionsAlarm.toAnnotation()],
      }),
      new cloudwatch.GraphWidget({
        title: `DB Replica Lag/${dbReplicaLagMetric.period.toMinutes()}min`,
        width: 6,
        left: [dbReplicaLagMetric],
        leftAnnotations: [dbReplicaLagAlarm.toAnnotation()],
      }),
      new cloudwatch.GraphWidget({
        title: `DB BufferCache Hit Ratio/${dbBufferCacheHitRatioMetric.period.toMinutes()}min`,
        width: 6,
        left: [dbBufferCacheHitRatioMetric],
        leftAnnotations: [dbBufferCacheHitRatioAlarm.toAnnotation()],
      }),
    );
    this.watchful.addWidgets(
      new cloudwatch.GraphWidget({
        title: 'RDS DML Overview',
        width: 24,
        left: [dbInsertThroughputMetric, dbUpdateThroughputMetric, dbSelectThroughputMetric, dbDeleteThroughputMetric],
      }),
    );
  }