i183: move serverless example to hands-on (#199)

serverless/README.md → hands-on/serverless/README.md

@@ -1,6 +1,6 @@
-# Architecture:
-[User] -> [API_Gateway] -> [Lambda] -> [DynamoDB]
-
-# References:
-## https://developer.hashicorp.com/terraform/tutorials/aws/lambda-api-gateway
-## https://dev.to/rolfstreefkerk/openapi-with-terraform-on-aws-api-gateway-17je
+# Architecture:
+[User] -> [API_Gateway] -> [Lambda] -> [DynamoDB]
+
+# References:
+## https://developer.hashicorp.com/terraform/tutorials/aws/lambda-api-gateway
+## https://dev.to/rolfstreefkerk/openapi-with-terraform-on-aws-api-gateway-17je

serverless/lambda_http.py → hands-on/serverless/lambda_http.py

@@ -1,36 +1,36 @@
-from __future__ import print_function
-
-import boto3
-import json
-
-print('Loading function')
-
-
-def lambda_handler(event, context):
-    '''Provide an event that contains the following keys:
-
-      - operation: one of the operations in the operations dict below
-      - tableName: required for operations that interact with DynamoDB
-      - payload: a parameter to pass to the operation being performed
-    '''
-    #print("Received event: " + json.dumps(event, indent=2))
-
-    operation = event['operation']
-
-    if 'tableName' in event:
-        dynamo = boto3.resource('dynamodb').Table(event['tableName'])
-
-    operations = {
-        'create': lambda x: dynamo.put_item(**x),
-        'read': lambda x: dynamo.get_item(**x),
-        'update': lambda x: dynamo.update_item(**x),
-        'delete': lambda x: dynamo.delete_item(**x),
-        'list': lambda x: dynamo.scan(**x),
-        'echo': lambda x: x,
-        'ping': lambda x: 'pong'
-    }
-
-    if operation in operations:
-        return operations[operation](event.get('payload'))
-    else:
+from __future__ import print_function
+
+import boto3
+import json
+
+print('Loading function')
+
+
+def lambda_handler(event, context):
+    '''Provide an event that contains the following keys:
+
+      - operation: one of the operations in the operations dict below
+      - tableName: required for operations that interact with DynamoDB
+      - payload: a parameter to pass to the operation being performed
+    '''
+    #print("Received event: " + json.dumps(event, indent=2))
+
+    operation = event['operation']
+
+    if 'tableName' in event:
+        dynamo = boto3.resource('dynamodb').Table(event['tableName'])
+
+    operations = {
+        'create': lambda x: dynamo.put_item(**x),
+        'read': lambda x: dynamo.get_item(**x),
+        'update': lambda x: dynamo.update_item(**x),
+        'delete': lambda x: dynamo.delete_item(**x),
+        'list': lambda x: dynamo.scan(**x),
+        'echo': lambda x: x,
+        'ping': lambda x: 'pong'
+    }
+
+    if operation in operations:
+        return operations[operation](event.get('payload'))
+    else:
         raise ValueError('Unrecognized operation "{}"'.format(operation))