service: dynamodb-monitoring-test

frameworkVersion: ">=1.1.0 <2.0.0"

provider:
  name: aws
  region: ${opt:region}
  runtime: python3.7
  timeout: 60 # 1 minute
  iamRoleStatements:
    - Effect: Allow
      Action:
        - dynamodb:DescribeLimits
        - dynamodb:DescribeTable
        - dynamodb:ListTables
        - autoscaling:Describe*
        - application-autoscaling:Describe*
        - cloudwatch:GetMetricData
        - cloudwatch:PutMetricData
      Resource: "*"

resources:
  Resources:
    MonitoringDynamoDbTable:
      Type: 'AWS::DynamoDB::Table'
      #DeletionPolicy: Retain
      Properties:
        AttributeDefinitions:
          -
            AttributeName: id
            AttributeType: S
        KeySchema:
          -
            AttributeName: id
            KeyType: HASH
        BillingMode: PROVISIONED
        ProvisionedThroughput:
          ReadCapacityUnits: 5
          WriteCapacityUnits: 5
        TableName: dynamodb-monitoring-test
        StreamSpecification:
          StreamViewType: NEW_AND_OLD_IMAGES
    MonitoringDynamoDbTableUEAlarm:
      Type: 'AWS::CloudWatch::Alarm'
      Properties:
        AlarmName: !Join ['', [!Ref MonitoringDynamoDbTable, '-ue-alarm']]
        AlarmDescription: 'Alarm when DynamoDB user errors occur'
        Namespace: 'AWS/DynamoDB'
        MetricName: 'UserErrors'
        Dimensions:
          - 
            Name: 'TableName'
            Value: !Ref MonitoringDynamoDbTable
        Statistic: 'Sum'
        Threshold: 0
        ComparisonOperator: 'GreaterThanThreshold'
        Period: 60
        Unit: 'Count'
        EvaluationPeriods: 1
    MonitoringDynamoDbTableSEAlarm:
      Type: 'AWS::CloudWatch::Alarm'
      Properties:
        AlarmName: !Join ['', [!Ref MonitoringDynamoDbTable, '-se-alarm']]
        AlarmDescription: 'Alarm when DynamoDB system errors occur'
        Namespace: 'AWS/DynamoDB'
        MetricName: 'SystemErrors'
        Dimensions:
          - 
            Name: 'TableName'
            Value: !Ref MonitoringDynamoDbTable
        Statistic: 'Sum'
        Threshold: 0
        ComparisonOperator: 'GreaterThanThreshold'
        Period: 60
        Unit: 'Count'
        EvaluationPeriods: 1

functions:
  dynamodb-cloudwatch-publish-metrics:
    handler: dynamodb_cloudwatch.publish_dynamodb_metrics
    environment:
      TARGET_DDB_TABLE: !Ref MonitoringDynamoDbTable
    events:
      - schedule: rate(1 minute)