improved readme

Author: Vadym Kazulkin

spring-boot-3.2-docker-image-with-crac/src/main/java/software/amazonaws/example/product/handler/GetProductByIdHandler.java

@@ -3,6 +3,9 @@
 
 package software.amazonaws.example.product.handler;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Optional;
 import java.util.Properties;
 import java.util.function.Function;
@@ -33,6 +36,14 @@ public class GetProductByIdHandler implements Function<APIGatewayProxyRequestEve
 
 	public APIGatewayProxyResponseEvent apply(APIGatewayProxyRequestEvent requestEvent) {
 
+		Path filePath = Path.of("/mnt/msg/crac/dump4.log"); 
+		try {
+			String content = Files.readString(filePath);
+			logger.info("crac dump" +content);
+		} catch (IOException e) {
+			logger.info("error reading dmup" +e.getMessage());			
+ 		}
+		
 		Properties prop = System.getProperties();
         logger.info ("JVM Vendor : " + prop.getProperty("java.vendor") );
 		String id = requestEvent.getPathParameters().get("id");

spring-boot-3.2-docker-image-with-crac/template.yaml

@@ -15,11 +15,76 @@ Globals:
     MemorySize: 1024   
     Environment:
       Variables:
-        JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Dspring.context.checkpoint=onRefresh -XX:CRaCCheckpointTo=/tmp/crac"
         MAIN_CLASS: software.amazonaws.Application
         PRODUCT_TABLE_NAME: !Ref ProductsTable
 
 Resources:
+
+  EfsLambdaVpc:
+    Type: AWS::EC2::VPC
+    Properties:
+      CidrBlock: "10.0.0.0/16"
+  EfsLambdaSecurityGroup:
+    Type: AWS::EC2::SecurityGroup
+    Properties:
+      GroupDescription: "EFS + Lambda on SAM Security Group"
+      VpcId: !Ref EfsLambdaVpc
+      SecurityGroupEgress:
+        - CidrIp: "0.0.0.0/0"
+          FromPort: 0
+          ToPort: 65535
+          IpProtocol: tcp
+      SecurityGroupIngress:
+        - CidrIp: "0.0.0.0/0"
+          FromPort: 0
+          ToPort: 65535
+          IpProtocol: tcp
+  EfsLambdaSubnetA:
+    Type: AWS::EC2::Subnet
+    Properties:
+      VpcId: !Ref EfsLambdaVpc
+      AvailabilityZone: !Select [ 0, !GetAZs '' ]
+      MapPublicIpOnLaunch: false
+      CidrBlock: "10.0.0.0/24"
+  EfsLambdaSubnetB:
+    Type: AWS::EC2::Subnet
+    Properties:
+      VpcId: !Ref EfsLambdaVpc
+      AvailabilityZone: !Select [ 1, !GetAZs '' ]
+      MapPublicIpOnLaunch: false
+      CidrBlock: "10.0.1.0/24"
+  EfsFileSystem:
+    Type: AWS::EFS::FileSystem
+  MountTargetA:
+    Type: AWS::EFS::MountTarget
+    Properties:
+      FileSystemId: !Ref EfsFileSystem
+      SubnetId: !Ref EfsLambdaSubnetA
+      SecurityGroups:
+        - !Ref EfsLambdaSecurityGroup
+  MountTargetB:
+    Type: AWS::EFS::MountTarget
+    Properties:
+      FileSystemId: !Ref EfsFileSystem
+      SubnetId: !Ref EfsLambdaSubnetB
+      SecurityGroups:
+        - !Ref EfsLambdaSecurityGroup
+  AccessPoint:
+    Type: AWS::EFS::AccessPoint
+    Properties:
+      FileSystemId: !Ref EfsFileSystem
+      PosixUser:
+        Gid: "1000"
+        Uid: "1000"
+      RootDirectory:
+        Path: "/lambda"
+        CreationInfo:
+          OwnerGid: "1000"
+          OwnerUid: "1000"
+          Permissions: "755"
+
+
+
   MyApi:
     Type: AWS::Serverless::Api
     DependsOn: MyApiCWLRoleArn 
@@ -108,18 +173,35 @@ Resources:
 
   GetProductByIdFunction:
     Type: AWS::Serverless::Function
+    DependsOn:
+      - MountTargetA
+      - MountTargetB
+
     Properties:
       PackageType: Image
-      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-with-crac-custom-docker-image:v1
+      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-crac-custom-docker-image:v1
       ImageConfig:
         Command: ["org.springframework.cloud.function.adapter.aws.FunctionInvoker::handleRequest"]
       Environment:
         Variables:
+           JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Dspring.context.checkpoint=onRefresh -XX:CRaCCheckpointTo=/mnt/msg/crac"
            SPRING_CLOUD_FUNCTION_DEFINITION: getProductByIdHandler
       FunctionName: GetProductByIdWithSpringBootJava21DockerImageWithCRaC
       Policies:
+        - EFSWriteAccessPolicy:
+            FileSystem: !Ref EfsFileSystem
+            AccessPoint: !Ref AccessPoint
         - DynamoDBReadPolicy:
             TableName: !Ref ProductsTable
+      VpcConfig:
+        SecurityGroupIds:
+          - !Ref EfsLambdaSecurityGroup
+        SubnetIds:
+          - !Ref EfsLambdaSubnetA
+          - !Ref EfsLambdaSubnetB
+      FileSystemConfigs:
+        - Arn: !GetAtt AccessPoint.Arn
+          LocalMountPath: /mnt/msg
       Events:
         GetRequestById:
           Type: Api
@@ -144,6 +226,7 @@ Resources:
         Command: ["org.springframework.cloud.function.adapter.aws.FunctionInvoker::handleRequest"]
       Environment:
         Variables:
+          JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
           SPRING_CLOUD_FUNCTION_DEFINITION: createProductHandler
       FunctionName: PutProductWithSpringBoot32Java21DockerImageWithCRaC
       Policies: