Initial commit

contains:
* Actual template
* Example function
* Tests
* Integration test (make file)
* Integration tests (deployed as lambda)
* drone CI and CI scripts

cloudformation/lambda-sam-template.yaml

@@ -0,0 +1,103 @@
+---
+AWSTemplateFormatVersion: 2010-09-09
+Transform: AWS::Serverless-2016-10-31
+Description: An Lambda function with a monitoring alarm, DLQ & PreTraffic Test
+Metadata:
+  License: magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&dn=gpl-3.0.txt GPL-v3-or-Later
+  cfn-lint:
+    config:
+      ignore_checks:
+        - W3011  # UpdatePolicy generated by SAM
+
+Parameters:
+  NotificationEmail:
+    Type: String
+  TestData:
+    Type: String
+  TestExpected:
+    Type: String
+
+Resources:
+  Function:
+    Type: AWS::Serverless::Function
+    Properties:
+      Handler: lambda_function.handler
+      Runtime: python3.7
+      CodeUri: src/lambda_function.py
+      DeadLetterQueue:
+        TargetArn: !GetAtt DeadLetterQueue.Arn
+        Type: SQS
+      AutoPublishAlias: live
+      DeploymentPreference:
+        Type: CodeDeployDefault.LambdaAllAtOnce
+        Alarms:
+          - !Ref Alarm
+        Hooks:
+          PreTraffic: !Ref TestFunction
+
+
+  Alarm:
+    Type: AWS::CloudWatch::Alarm
+    Properties:
+      ActionsEnabled: true
+      AlarmActions:
+        - !Ref NotificationTopic
+      AlarmDescription: Notify on failures of cloud-interest-rate-calculator function
+      AlarmName: !Sub ${AWS::StackName}-errors
+      MetricName: Errors
+      Namespace: AWS/Lambda
+      Statistic: Sum
+      Dimensions:
+        - Name: FunctionName
+          Value: !Select [6, !Split [':', !GetAtt Function.Arn]]
+        - Name: Resource
+          Value: !Select [6, !Split [':', !GetAtt Function.Arn]]
+      Period: 300
+      EvaluationPeriods: 1
+      DatapointsToAlarm: 1
+      Threshold: 0
+      ComparisonOperator: GreaterThanThreshold
+
+  NotificationTopic:
+    Type: AWS::SNS::Topic
+    Properties:
+      DisplayName: !Sub ${AWS::StackName}-errors
+      Subscription:
+        - Endpoint: !Ref NotificationEmail
+          Protocol: email
+      Tags:
+        - Key: Type
+          Value: Monitoring
+
+  DeadLetterQueue:
+    Type: AWS::SQS::Queue
+    Properties:
+      Tags:
+        - Key: Type
+          Value: DeadLetterQueue
+
+  TestFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      FunctionName: !Sub CodeDeployHook_PreHook_${AWS::StackName}
+      Handler: lambda_verification.handler
+      Runtime: python3.7
+      CodeUri: src/lambda_verification.py
+      Environment:
+        Variables:
+          CurrentVersion: !Ref Function.Version
+          TestData: !Ref TestData
+          TestExpected: !Ref TestExpected
+      Policies:
+        - Version: 2012-10-17
+          Statement:
+            - Effect: Allow
+              Action: codedeploy:PutLifecycleEventHookExecutionStatus
+              Resource: "*"
+            - Effect: Allow
+              Action: lambda:InvokeFunction
+              Resource: !Sub "${Function.Arn}:*"
+
+Outputs:
+  LambdaArn:
+    Value: !GetAtt Function.Arn