本家の踏襲のため、Dockerfileを変更

scripts/aws/lib/construct/db.ts

@@ -0,0 +1,64 @@
+import { Construct } from 'constructs';
+import * as ec2 from 'aws-cdk-lib/aws-ec2'
+import * as rds from "aws-cdk-lib/aws-rds";
+
+interface RdsProps {
+  vpc: ec2.Vpc
+  dbSG:ec2.SecurityGroup
+}
+
+export class Rds extends Construct{
+  readonly rdsCluster: rds.DatabaseCluster
+
+  constructor(scope: Construct, id:string, props: RdsProps){
+    super(scope, id);
+
+    const {vpc, dbSG} = props
+    const instanceType = ec2.InstanceType.of(ec2.InstanceClass.BURSTABLE4_GRAVITON, ec2.InstanceSize.MEDIUM)
+
+    // RDSのパスワードを自動生成してSecrets Managerに格納
+    const rdsCredentials = rds.Credentials.fromGeneratedSecret('db_user',{
+      secretName: 'langflow-DbSecret',
+    })
+
+    // DB クラスターのパラメータグループ作成
+    const clusterParameterGroup = new rds.ParameterGroup(scope, 'ClusterParameterGroup',{
+      engine: rds.DatabaseClusterEngine.auroraMysql({
+        version: rds.AuroraMysqlEngineVersion.VER_3_02_0
+      }),
+      description: 'for-langflow',
+    })
+    clusterParameterGroup.bindToCluster({})
+
+    // DB インスタンスのパラメタグループ作成
+    const instanceParameterGroup = new rds.ParameterGroup(scope, 'InstanceParameterGroup',{
+      engine: rds.DatabaseClusterEngine.auroraMysql({
+        version: rds.AuroraMysqlEngineVersion.VER_3_02_0,
+      }),
+      description: 'for-langflow',
+    })
+    instanceParameterGroup.bindToInstance({})
+
+    this.rdsCluster = new rds.DatabaseCluster(scope, 'LangflowDbCluster', {
+      engine: rds.DatabaseClusterEngine.auroraMysql({
+        version: rds.AuroraMysqlEngineVersion.VER_3_02_0,
+      }),
+      storageEncrypted: true,
+      credentials: rdsCredentials,
+      instanceIdentifierBase: 'langflow-instance',
+      vpc:vpc,
+      vpcSubnets:vpc.selectSubnets({
+        subnetGroupName: 'langflow-Isolated',
+      }),
+      securityGroups:[dbSG],
+      writer: rds.ClusterInstance.provisioned("WriterInstance", {
+        instanceType: instanceType,
+        enablePerformanceInsights: true,
+        parameterGroup:instanceParameterGroup,
+      }),
+      // 2台目以降はreaders:で設定 
+      parameterGroup: clusterParameterGroup,
+      defaultDatabaseName: 'langflow',
+    })
+  }
+}