retrieve Role ARN, and removed AWS Academy hints in localstack example

example-projects/counter-demo/aws-lambda-localstack/start.py

@@ -27,9 +27,9 @@ functionName = 'cloudcomp-counter-lambda-demo'
 # see ARN for AWS Academy LabRole function here:
 # https://us-east-1.console.aws.amazon.com/iamv2/home?region=us-east-1#/roles/details/LabRole?section=permissions
 
-# roleName = 'arn:aws:iam::309000625112:role/service-role/cloudcomp-counter-demo-role-6rs7pah3'
-# roleName = 'arn:aws:iam::919927306708:role/cloudcomp-s3-access'
-roleName = 'arn:aws:iam::488766701848:role/LabRole'
+# roleArn = 'arn:aws:iam::309000625112:role/service-role/cloudcomp-counter-demo-role-6rs7pah3'
+# roleArn = 'arn:aws:iam::919927306708:role/cloudcomp-s3-access'
+roleArn = 'arn:aws:iam::488766701848:role/LabRole'
 
 ################################################################################################
 #
@@ -104,7 +104,7 @@ with open('lambda-deployment-archive.zip', mode='rb') as file:
     response = lClient.create_function(
         FunctionName=functionName,
         Runtime='python3.9',
-        Role=roleName,
+        Role=roleArn,
         Code={
             'ZipFile': zipfileContent
         },
@@ -118,18 +118,9 @@ with open('lambda-deployment-archive.zip', mode='rb') as file:
     )
     lambdaFunctionARN = response['FunctionArn']
 
-print("Lambda Function and S3 Bucket to store the counter are available. Sadly, AWS Academy labs do not allow\n"
-      "creating an API gateway to be able to access the Lambda function directly via HTTP from the browser, as\n"
-      "shown in https://348yxdily0.execute-api.eu-central-1.amazonaws.com/default/cloudcomp-counter-demo.\n"
+print("Lambda Function and S3 Bucket to store the counter are available.\n"
       "\n"
-      "However you can now run invoke-function.py to view an increment the counter. You can also use \n"
-      "the test button in the Lambda AWS console. In this case you need to send the content\n"
-      "\n"
-      "{\n"
-      "  \"input\": \"1\"\n"
-      "}\n"
-      "\n"
-      "to increment the counter by 1.\n"
+      "You can now run invoke-function.py to view an increment the counter.\n"
       "Try to understand how Lambda can be used to cut costs regarding cloud services and what its pros\n"
       "and cons are.\n")
 
@@ -147,6 +138,6 @@ response = apiClient.create_api(
     ProtocolType='HTTP',
     Target=lambdaFunctionARN
 )
-apiArn=response
+apiArn = response
 
 print("API Endpoint can be reached at: http://" + apiArn["ApiEndpoint"])

example-projects/counter-demo/aws-lambda/start.py

@@ -25,9 +25,9 @@ functionName = 'cloudcomp-counter-lambda-demo'
 # see ARN for AWS Academy LabRole function here:
 # https://us-east-1.console.aws.amazon.com/iamv2/home?region=us-east-1#/roles/details/LabRole?section=permissions
 
-# roleName = 'arn:aws:iam::309000625112:role/service-role/cloudcomp-counter-demo-role-6rs7pah3'
-# roleName = 'arn:aws:iam::919927306708:role/cloudcomp-s3-access'
-roleName = 'arn:aws:iam::488766701848:role/LabRole'
+# roleArn = 'arn:aws:iam::309000625112:role/service-role/cloudcomp-counter-demo-role-6rs7pah3'
+# roleArn = 'arn:aws:iam::919927306708:role/cloudcomp-s3-access'
+roleArn = 'arn:aws:iam::488766701848:role/LabRole'
 
 ################################################################################################
 #
@@ -46,11 +46,20 @@ def cleanup_s3_bucket(s3_bucket):
 
 
 client = boto3.setup_default_session(region_name=region)
+iamClient = boto3.client('iam')
 s3Client = boto3.client('s3')
 s3Resource = boto3.resource('s3')
 lClient = boto3.client('lambda')
 apiClient = boto3.client("apigatewayv2")
 
+print("Getting AWS Academy LabRole ARN...")
+print("------------------------------------")
+response = iamClient.list_roles()
+for role in response["Roles"]:
+    if role["RoleName"] == "LabRole":
+        roleArn = role["Arn"]
+        print(roleArn)
+
 print("Deleting old function...")
 print("------------------------------------")
 try:
@@ -93,7 +102,7 @@ with open('lambda-deployment-archive.zip', mode='rb') as file:
     response = lClient.create_function(
         FunctionName=functionName,
         Runtime='python3.9',
-        Role=roleName,
+        Role=roleArn,
         Code={
             'ZipFile': zipfileContent
         },