feat(aws-lambda): Generates a version when currentVersionOptions is set

packages/@aws-cdk/aws-lambda/README.md

@@ -85,9 +85,9 @@ To deploy a `DockerImageFunction` on Lambda `arm64` architecture, specify `Archi
 This will bundle docker image assets for `arm64` architecture with `--platform linux/arm64` even if build within an `x86_64` host.
 
 ```ts
-new DockerImageFunction(this, 'AssetFunction', {
-  code: DockerImageCode.fromImageAsset(path.join(__dirname, 'docker-arm64-handler')),
-  architecture: Architecture.ARM_64,
+new lambda.DockerImageFunction(this, 'AssetFunction', {
+  code: lambda.DockerImageCode.fromImageAsset(path.join(__dirname, 'docker-arm64-handler')),
+  architecture: lambda.Architecture.ARM_64,
 });
 ```
 
@@ -283,6 +283,19 @@ const version = new lambda.Version(this, 'MyVersion', {
 });
 ```
 
+Or setting the `currentVersionOptions` when creating a new lambda
+
+```ts
+new lambda.Function(this, 'MyVersionedLambda', {
+  runtime: lambda.Runtime.NODEJS_18_X,
+  handler: 'index.handler',
+  code: lambda.Code.fromAsset(path.join(__dirname, 'lambda-handler')),
+  currentVersionOptions: {
+    provisionedConcurrentExecutions: 3,
+  },
+});
+```
+
 The major caveat to know here is that a function version must always point to a
 specific 'version' of the function. When the function is modified, the version
 will continue to point to the 'then version' of the function.

packages/@aws-cdk/aws-lambda/lib/function.ts

@@ -858,6 +858,9 @@ export class Function extends FunctionBase {
     }
 
     this.currentVersionOptions = props.currentVersionOptions;
+    if (props.currentVersionOptions) {
+      this.currentVersion;
+    }
 
     if (props.filesystem) {
       if (!props.vpc) {

packages/@aws-cdk/aws-lambda/test/function.test.ts

@@ -2871,7 +2871,7 @@ describe('function', () => {
 
   describe('FunctionUrl', () => {
     test('addFunctionUrl creates a function url with default options', () => {
-    // GIVEN
+      // GIVEN
       const stack = new cdk.Stack();
       const fn = new lambda.Function(stack, 'MyLambda', {
         code: new lambda.InlineCode('hello()'),
@@ -2895,7 +2895,7 @@ describe('function', () => {
     });
 
     test('addFunctionUrl creates a function url with all options', () => {
-    // GIVEN
+      // GIVEN
       const stack = new cdk.Stack();
       const fn = new lambda.Function(stack, 'MyLambda', {
         code: new lambda.InlineCode('hello()'),
@@ -3045,6 +3045,31 @@ describe('function', () => {
       },
     });
   });
+
+  test('Generates a version when currentVersionOptions is set', () => {
+    const stack = new cdk.Stack();
+
+    new lambda.Function(stack, 'MyLambda', {
+      code: new lambda.InlineCode('foo'),
+      handler: 'index.handler',
+      runtime: lambda.Runtime.NODEJS_14_X,
+      currentVersionOptions: {
+        provisionedConcurrentExecutions: 3,
+      },
+    });
+
+    Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Version', {
+      ProvisionedConcurrencyConfig: {
+        ProvisionedConcurrentExecutions: 3,
+      },
+    });
+
+    Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Function', {
+      Code: { ZipFile: 'foo' },
+      Handler: 'index.handler',
+      Runtime: 'nodejs14.x',
+    });
+  });
 });
 
 test('throws if ephemeral storage size is out of bound', () => {
@@ -3141,14 +3166,14 @@ test('set SnapStart to desired value', () => {
 
   Template.fromStack(stack).hasResource('AWS::Lambda::Function', {
     Properties:
-        {
-          Code: { ZipFile: 'java11-test-function.zip' },
-          Handler: 'example.Handler::handleRequest',
-          Runtime: 'java11',
-          SnapStart: {
-            ApplyOn: 'PublishedVersions',
-          },
-        },
+    {
+      Code: { ZipFile: 'java11-test-function.zip' },
+      Handler: 'example.Handler::handleRequest',
+      Runtime: 'java11',
+      SnapStart: {
+        ApplyOn: 'PublishedVersions',
+      },
+    },
   });
 });
 

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/CurrentVersionOptionsDefaultTestDeployAssertF66C8354.assets.json

@@ -0,0 +1,19 @@
+{
+  "version": "22.0.0",
+  "files": {
+    "21fbb51d7b23f6a6c262b46a9caee79d744a3ac019fd45422d988b96d44b2a22": {
+      "source": {
+        "path": "CurrentVersionOptionsDefaultTestDeployAssertF66C8354.template.json",
+        "packaging": "file"
+      },
+      "destinations": {
+        "current_account-current_region": {
+          "bucketName": "cdk-hnb659fds-assets-${AWS::AccountId}-${AWS::Region}",
+          "objectKey": "21fbb51d7b23f6a6c262b46a9caee79d744a3ac019fd45422d988b96d44b2a22.json",
+          "assumeRoleArn": "arn:${AWS::Partition}:iam::${AWS::AccountId}:role/cdk-hnb659fds-file-publishing-role-${AWS::AccountId}-${AWS::Region}"
+        }
+      }
+    }
+  },
+  "dockerImages": {}
+}

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/CurrentVersionOptionsDefaultTestDeployAssertF66C8354.template.json

@@ -0,0 +1,36 @@
+{
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/cdk.out

@@ -0,0 +1 @@
+{"version":"22.0.0"}

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/current-version-options.assets.json

@@ -0,0 +1,19 @@
+{
+  "version": "22.0.0",
+  "files": {
+    "a37f787b341d3d57968efec7be372be0c175afbeae09ab1909503e7a7f7dc6b8": {
+      "source": {
+        "path": "current-version-options.template.json",
+        "packaging": "file"
+      },
+      "destinations": {
+        "current_account-current_region": {
+          "bucketName": "cdk-hnb659fds-assets-${AWS::AccountId}-${AWS::Region}",
+          "objectKey": "a37f787b341d3d57968efec7be372be0c175afbeae09ab1909503e7a7f7dc6b8.json",
+          "assumeRoleArn": "arn:${AWS::Partition}:iam::${AWS::AccountId}:role/cdk-hnb659fds-file-publishing-role-${AWS::AccountId}-${AWS::Region}"
+        }
+      }
+    }
+  },
+  "dockerImages": {}
+}

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/current-version-options.template.json

@@ -0,0 +1,99 @@
+{
+ "Resources": {
+  "FServiceRole3AC82EE1": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "lambda.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    },
+    "ManagedPolicyArns": [
+     {
+      "Fn::Join": [
+       "",
+       [
+        "arn:",
+        {
+         "Ref": "AWS::Partition"
+        },
+        ":iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
+       ]
+      ]
+     }
+    ]
+   }
+  },
+  "FC4345940": {
+   "Type": "AWS::Lambda::Function",
+   "Properties": {
+    "Code": {
+     "ZipFile": "\n  exports.handler = async(event) => {\n    return \"My versioned lambda\";\n  };\n  "
+    },
+    "Role": {
+     "Fn::GetAtt": [
+      "FServiceRole3AC82EE1",
+      "Arn"
+     ]
+    },
+    "Handler": "index.handler",
+    "Runtime": "nodejs14.x"
+   },
+   "DependsOn": [
+    "FServiceRole3AC82EE1"
+   ]
+  },
+  "FCurrentVersion58B8A55Dc23085bc26dff8641d9434d378493303": {
+   "Type": "AWS::Lambda::Version",
+   "Properties": {
+    "FunctionName": {
+     "Ref": "FC4345940"
+    },
+    "ProvisionedConcurrencyConfig": {
+     "ProvisionedConcurrentExecutions": 3
+    }
+   }
+  }
+ },
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}

packages/@aws-cdk/aws-lambda/test/integ.current-version-options.js.snapshot/integ.json

@@ -0,0 +1,12 @@
+{
+  "version": "22.0.0",
+  "testCases": {
+    "CurrentVersionOptions/DefaultTest": {
+      "stacks": [
+        "current-version-options"
+      ],
+      "assertionStack": "CurrentVersionOptions/DefaultTest/DeployAssert",
+      "assertionStackName": "CurrentVersionOptionsDefaultTestDeployAssertF66C8354"
+    }
+  }
+}