template.yml

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  ship-logs-to-honeycomb-app

  Ship logs and traces to honeycomb.io

Metadata:
  AWS::ServerlessRepo::Application:
    Name: ship-logs-to-honeycomb
    Description: Ship logs and traces to honeycomb.io
    Author: Solve HQ
    SpdxLicenseId: MIT
    LicenseUrl: LICENSE
    ReadmeUrl: README.md
    Labels: ["lambda", "honeycomb", "logging", "observability"]
    HomePageUrl: https://github.com/solve-hq/ship-logs-to-honeycomb
    SemanticVersion: 0.3.12
    SourceCodeUrl: https://github.com/solve-hq/ship-logs-to-honeycomb

Parameters:
  EventSourceType:
    Type: String
    Default: "Lambda"
    Description: >
      What's the event source you will intend to use?
      If logs are pushed from CloudWatch Logs to Lambda directly, then use 'Lambda'.
      If logs are pushed to a Kinesis Stream first, then use 'Kinesis'.
      Other event sources are not supported (yet).
    AllowedValues:
      - "Lambda"
      - "Kinesis"
  SecretId:
    Type: String
    Description: >
      The Lambda function expects the HoneyComb credentials to be stored in SecretsManager.
      Provide the secret ID for the HoneyComb credentials here.
  TimeoutSeconds:
    Type: Number
    Default: 30
    MaxValue: 900
    MinValue: 1
    Description: >
      (optional) Timeout for the Lambda function that would ship logs to HoneyComb. Defaults to 30s.
  KinesisStreamArn:
    Type: String
    Default: ""
    Description: >
      (optional) Only relevant to the Kinesis event source type. The ARN to the Kinesis stream to 
      subscribe the function to.
  KinesisStreamBatchSize:
    Type: Number
    Default: 100
    Description: >
      (optional) Only relevant to the Kinesis event source type. The batch size to use for the 
      subscription.

Conditions:
  IsLambda: !Equals [!Ref EventSourceType, "Lambda"]
  IsKinesis: !Equals [!Ref EventSourceType, "Kinesis"]

Globals:
  Function:
    Timeout: !Ref TimeoutSeconds
    Runtime: nodejs8.10
    MemorySize: 1024
    Environment:
      Variables:
        SECRET_ID: !Ref SecretId

Resources:
  ShipLogsToHoneyLambda:
    Type: AWS::Serverless::Function
    Condition: IsLambda
    Properties:
      CodeUri: ./functions/ship-logs-to-honey
      Handler: index.handler
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action:
                - secretsmanager:GetSecretValue
              Resource:
                - !Sub
                  - arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:${SecretId}-*
                  - { SecretId: !Ref SecretId }

  ShipLogsToHoneyKinesis:
    Type: AWS::Serverless::Function
    Condition: IsKinesis
    Properties:
      CodeUri: ./functions/ship-logs-to-honey
      Handler: index.handler
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action:
                - secretsmanager:GetSecretValue
              Resource:
                - !Sub
                  - arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:${SecretId}-*
                  - { SecretId: !Ref SecretId }
      Events:
        Stream:
          Type: Kinesis
          Properties:
            Stream: !Ref KinesisStreamArn
            BatchSize: !Ref KinesisStreamBatchSize
            StartingPosition: LATEST

Outputs:
  ShipLogsToHoneyLambdaFunctionName:
    Description: Name of the Lambda function name
    Value: !If [IsLambda, !Ref ShipLogsToHoneyLambda, !Ref ShipLogsToHoneyKinesis]

  ShipLogsToHoneyLambdaFunctionArn:
    Description: ARN of the Lambda function name
    Value: !If [IsLambda, !GetAtt ShipLogsToHoneyLambda.Arn, !GetAtt ShipLogsToHoneyKinesis.Arn]