fix(aws-lambda-python): use cp instead of rsync

packages/@aws-cdk/aws-lambda-python/lib/bundling.ts

@@ -28,7 +28,7 @@ export function bundle(options: BundlingOptions): lambda.AssetCode {
 
   let depsCommand = chain([
     hasRequirements ? `${installer} install -r requirements.txt -t ${cdk.AssetStaging.BUNDLING_OUTPUT_DIR}` : '',
-    `rsync -r . ${cdk.AssetStaging.BUNDLING_OUTPUT_DIR}`,
+    `cp -au . ${cdk.AssetStaging.BUNDLING_OUTPUT_DIR}`,
   ]);
 
   return lambda.Code.fromAsset(options.entry, {

packages/@aws-cdk/aws-lambda-python/test/bundling.test.ts

@@ -21,7 +21,7 @@ test('Bundling', () => {
     bundling: expect.objectContaining({
       command: [
         'bash', '-c',
-        'rsync -r . /asset-output',
+        'cp -au . /asset-output',
       ],
     }),
   });
@@ -48,7 +48,7 @@ test('Bundling with requirements.txt installed', () => {
     bundling: expect.objectContaining({
       command: [
         'bash', '-c',
-        'pip3 install -r requirements.txt -t /asset-output && rsync -r . /asset-output',
+        'pip3 install -r requirements.txt -t /asset-output && cp -au . /asset-output',
       ],
     }),
   });
@@ -72,7 +72,7 @@ test('Bundling Python 2.7 with requirements.txt installed', () => {
     bundling: expect.objectContaining({
       command: [
         'bash', '-c',
-        'pip install -r requirements.txt -t /asset-output && rsync -r . /asset-output',
+        'pip install -r requirements.txt -t /asset-output && cp -au . /asset-output',
       ],
     }),
   });

packages/@aws-cdk/aws-lambda-python/test/integ.function.py38.expected.json

@@ -0,0 +1,113 @@
+{
+  "Resources": {
+    "myhandlerServiceRole77891068": {
+      "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"
+              ]
+            ]
+          }
+        ]
+      }
+    },
+    "myhandlerD202FA8E": {
+      "Type": "AWS::Lambda::Function",
+      "Properties": {
+        "Code": {
+          "S3Bucket": {
+            "Ref": "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeS3Bucket0552B5BB"
+          },
+          "S3Key": {
+            "Fn::Join": [
+              "",
+              [
+                {
+                  "Fn::Select": [
+                    0,
+                    {
+                      "Fn::Split": [
+                        "||",
+                        {
+                          "Ref": "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeS3VersionKey9522AC10"
+                        }
+                      ]
+                    }
+                  ]
+                },
+                {
+                  "Fn::Select": [
+                    1,
+                    {
+                      "Fn::Split": [
+                        "||",
+                        {
+                          "Ref": "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeS3VersionKey9522AC10"
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            ]
+          }
+        },
+        "Handler": "index.handler",
+        "Role": {
+          "Fn::GetAtt": [
+            "myhandlerServiceRole77891068",
+            "Arn"
+          ]
+        },
+        "Runtime": "python3.8"
+      },
+      "DependsOn": [
+        "myhandlerServiceRole77891068"
+      ]
+    }
+  },
+  "Parameters": {
+    "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeS3Bucket0552B5BB": {
+      "Type": "String",
+      "Description": "S3 bucket for asset \"822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1ade\""
+    },
+    "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeS3VersionKey9522AC10": {
+      "Type": "String",
+      "Description": "S3 key for asset version \"822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1ade\""
+    },
+    "AssetParameters822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1adeArtifactHash3CE06D09": {
+      "Type": "String",
+      "Description": "Artifact hash for asset \"822ec544787c04e6b27b02f2408e4c322d48fbd352adb46d5aa2d6b3553a1ade\""
+    }
+  },
+  "Outputs": {
+    "FunctionArn": {
+      "Value": {
+        "Fn::GetAtt": [
+          "myhandlerD202FA8E",
+          "Arn"
+        ]
+      }
+    }
+  }
+}

packages/@aws-cdk/aws-lambda-python/test/integ.function.py38.ts

@@ -0,0 +1,28 @@
+import * as path from 'path';
+import { Runtime } from '@aws-cdk/aws-lambda';
+import { App, CfnOutput, Construct, Stack, StackProps } from '@aws-cdk/core';
+import * as lambda from '../lib';
+
+/*
+ * Stack verification steps:
+ * * aws lambda invoke --function-name <deployed fn name> --invocation-type Event --payload '"OK"' response.json
+ */
+
+class TestStack extends Stack {
+  constructor(scope: Construct, id: string, props?: StackProps) {
+    super(scope, id, props);
+
+    const fn = new lambda.PythonFunction(this, 'my_handler', {
+      entry: path.join(__dirname, 'lambda-handler'),
+      runtime: Runtime.PYTHON_3_8,
+    });
+
+    new CfnOutput(this, 'FunctionArn', {
+      value: fn.functionArn,
+    });
+  }
+}
+
+const app = new App();
+new TestStack(app, 'cdk-integ-lambda-python-38');
+app.synth();