cloudformation.json

{
  "Resources": {
    "DockerHubToSlackAPI": {
      "Type": "AWS::ApiGateway::RestApi",
      "Properties": {
        "Name": "DockerHubToSlackAPI"
      }
    },

    "APIStaticPart": {
      "Type": "AWS::ApiGateway::Resource",
      "Properties": {
        "PathPart": "services",
        "RestApiId": { "Ref": "DockerHubToSlackAPI" },
        "ParentId": { "Fn::GetAtt": ["DockerHubToSlackAPI", "RootResourceId"] }
      },
      "DependsOn": "DockerHubToSlackAPI"
    },

    "APIDynamicPart": {
      "Type": "AWS::ApiGateway::Resource",
      "Properties": {
        "PathPart": "{service+}",
        "RestApiId": { "Ref": "DockerHubToSlackAPI" },
        "ParentId": { "Ref": "APIStaticPart" }
      },
      "DependsOn": "APIStaticPart"
    },

    "APIServicePostMethod": {
      "Type": "AWS::ApiGateway::Method",
      "Properties": {
        "AuthorizationType": "NONE",
        "HttpMethod": "POST",
        "ResourceId": { "Ref": "APIDynamicPart" },
        "RestApiId": { "Ref": "DockerHubToSlackAPI" },
        "Integration": {
          "Type": "AWS_PROXY",
          "IntegrationHttpMethod": "POST",
          "Uri": { "Fn::Sub":"arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${DockerHubToSlackFunction.Arn}/invocations" }
        }
      },
      "DependsOn": [
        "APIDynamicPart",
        "DockerHubToSlackFunction"
      ]
    },

    "APIDeployment": {
      "Type": "AWS::ApiGateway::Deployment",
      "Properties": {
        "RestApiId": { "Ref": "DockerHubToSlackAPI" }
      },
      "DependsOn": "APIServicePostMethod"
    },

    "APIStage": {
      "Type": "AWS::ApiGateway::Stage",
      "Properties": {
        "DeploymentId": { "Ref": "APIDeployment" },
        "RestApiId": { "Ref": "DockerHubToSlackAPI" },
        "StageName": "v1"
      },
      "DependsOn": "APIDeployment"
    },

    "DockerHubToSlackFunction": {
      "Type": "AWS::Lambda::Function",
      "Properties": {
        "Code": {
          "S3Bucket": "dockerhubtoslacklambda",
          "S3Key": "lambda.zip"
        },
        "Runtime": "python2.7",
        "Handler": "lambda.handler",
        "Timeout": "5",
        "Role": { "Fn::GetAtt": ["LambdaExecutionRole", "Arn"] },
      },
      "DependsOn": "LambdaExecutionRole"
    },

    "LambdaExecutionRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": "lambda.amazonaws.com"
              },
              "Action": "sts:AssumeRole"
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "lambdaexecution",
            "PolicyDocument": {
              "Version" : "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents"
                  ],
                  "Resource": "arn:aws:logs:*:*:*"
                }
              ]
            }
          }
        ]
      }
    },

    "LambdaInvokePermission": {
      "Type": "AWS::Lambda::Permission",
      "Properties": {
        "Action": "lambda:InvokeFunction",
        "FunctionName": { "Fn::GetAtt": ["DockerHubToSlackFunction", "Arn"] },
        "Principal": "apigateway.amazonaws.com"
      },
      "DependsOn": "DockerHubToSlackFunction"
    }
  }
}