Feature/hub#19277 database slow query dashboard

src/databases/rds-aurora-mysql-dashboard.ts

@@ -0,0 +1,67 @@
+import * as cloudwatch from 'aws-cdk-lib/aws-cloudwatch';;
+import { Construct } from 'constructs';
+
+interface TmRdsAuroraMysqlDashboardProps {
+  clusterIdentifier: string;
+  dashboardName?: string;
+}
+
+export class TmRdsAuroraMysqlDashboard extends Construct {
+  constructor(scope: Construct, id: string, props: TmRdsAuroraMysqlDashboardProps) {
+    super(scope, id);
+
+    const logGroupName = `/aws/rds/cluster/${props.clusterIdentifier}/slowquery`;
+
+    // Dashboard creation
+    const dashboard = new cloudwatch.Dashboard(this, 'RdsAuroraMysqlDashboard', {
+      dashboardName: props.dashboardName || 'MysqlDashboard',
+    });
+
+    // 2. Widget : Top 20 slowest queries (Table)
+    const slowQueryList = new cloudwatch.LogQueryWidget({
+      title: 'Top 20 Slowest Queries',
+      logGroupNames: [logGroupName],
+      view: cloudwatch.LogQueryVisualizationType.TABLE,
+      width: 24,
+      height: 8,
+      queryString: `
+      fields @timestamp
+      | filter @message like /Query_time:/
+      | parse @message "# Query_time: * Lock_time: * Rows_sent: * Rows_examined: *" 
+             as query_time, lock_time, rows_sent, rows_examined
+      | sort query_time desc
+      | limit 20 
+      `,
+    });
+
+
+    // 3. Widget : average response time (Graphic)
+    const latencyOverTime = new cloudwatch.LogQueryWidget({
+      title: 'Average Latency (seconds) over time',
+      logGroupNames: [logGroupName],
+      view: cloudwatch.LogQueryVisualizationType.LINE,
+      width: 12,
+      height: 6,
+      queryString: `
+      fields @timestamp, @message
+      | parse @message "Query_time: * " as duration
+      | stats avg(duration) by bin(5m)
+      `,
+    });
+
+    // 4. Widget : slow queries volume per minute
+    const volumeWidget = new cloudwatch.LogQueryWidget({
+      title: 'Slow Query Count per minute',
+      logGroupNames: [logGroupName],
+      view: cloudwatch.LogQueryVisualizationType.BAR,
+      width: 12,
+      height: 6,
+      queryString: `
+        stats count(*) by bin(1m)
+      `,
+    });
+
+    dashboard.addWidgets(latencyOverTime, volumeWidget);
+    dashboard.addWidgets(slowQueryList);
+  }
+}

src/databases/rds-aurora-mysql-serverless.ts

@@ -32,6 +32,25 @@ export class TmRdsAuroraMysqlServerless extends rds.DatabaseCluster {
     props?: TmRdsAuroraMysqlServerlessProps,
   ) {
 
+    // Define default engine
+    const clusterEngine = rds.DatabaseClusterEngine.auroraMysql({
+      version: rds.AuroraMysqlEngineVersion.VER_3_08_1,
+    });
+
+    // Default Parameter group
+    const defaultParameterGroup = new rds.ParameterGroup(scope, `${id}ParametersGroup`, {
+      engine: clusterEngine,
+      parameters: {
+        sql_mode: 'NO_ENGINE_SUBSTITUTION',
+        max_connections: '500',
+        wait_timeout: '60',
+        // Enable slow query logs
+        slow_query_log: '1',
+        long_query_time: '3',
+        log_output: 'FILE',
+      },
+    });
+
     const performanceInsightRetention = rds.PerformanceInsightRetention.DEFAULT;
     // Conditionally create the writer instance props
     const writerProps = props?.provisionedInstanceType
@@ -47,9 +66,8 @@ export class TmRdsAuroraMysqlServerless extends rds.DatabaseCluster {
      * The default properties for the RDS Aurora MySQL Serverless database cluster.
      */
     const defaultProps: rds.DatabaseClusterProps = {
-      engine: rds.DatabaseClusterEngine.auroraMysql({
-        version: rds.AuroraMysqlEngineVersion.VER_3_05_2,
-      }),
+      engine: clusterEngine,
+      parameterGroup: defaultParameterGroup,
       writer: writerProps,
       credentials: rds.Credentials.fromUsername('admin'), // The master credentials for the database
       // to true in production