CI with Logic App Custom Connector

Just had some fortune to work with some projects using the Logic App Custom Connector it’s alot of fun now with all new capabilites on prem connectivity and all and as allways we end upp with setting up CI deployments via TFS.

That is when I found that the On Prem Data Gateway ARM template is poorly documented and the generated template from automation script are missing some important properties. So I thought I’ll gather the information needed here, provide som pitfalls and so on.

The schema for the ARM template can be found at GitHub: https://github.com/Azure/azure-resource-manager-schemas/blob/master/schemas/2016-06-01/Microsoft.Web.json.

It’s inside the Web schema and not that “easy” to get that you are in the correct definition but go down to row 119 and you find the customApis part, this is good for reference.

So let’s see how a ARM template for the On Premise Data Gateway looks like when complete: ( I’m actually adding a fully working connector for https://billogram.com/) The full represenatation of the swagger can also be found at my GitHub repository https://github.com/MLogdberg/LogicAppCustomConnectors/tree/master/Billogram

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "customApis_name": {
      "defaultValue": "Billogram",
      "type": "String"
    },
    "location": {
      "defaultValue": "westeurope",
      "type": "String"
    },
    "serviceUrl": {
      "defaultValue": "https://sandbox.billogram.com/api/v2",
      "type": "String"
    }
  },
  "variables": {},
  "resources": [
    {
      "type": "Microsoft.Web/customApis",
      "name": "[parameters('customApis_name')]",
      "apiVersion": "2016-06-01",
      "location": "[parameters('location')]",
      "properties": {
        "connectionParameters": {
          "username": {
            "type": "securestring",
            "uiDefinition": {
              "displayName": "API USer",
              "description": "The API User for this api",
              "tooltip": "Provide the API User",
              "constraints": {
                "tabIndex": 2,
                "clearText": true,
                "required": "true"
              }
            }
          },
          "password": {
            "type": "securestring",
            "uiDefinition": {
              "displayName": "API Password",
              "description": "The API Password for this api",
              "tooltip": "Provide the API Apssword",
              "constraints": {
                "tabIndex": 3,
                "clearText": false,
                "required": "true"
              }
            }
          }
        },
        "backendService": {
          "serviceUrl": "[parameters('serviceUrl')]"
        },
        "swagger": {
          "swagger": "2.0",
          "info": {
            "description": "The Billogram API is built according to RESTful principles, which means it uses HTTP as an application protocol rather than just as a transport layer for a custom protocol, like SOAP does. In other words, HTTP features such as the various request types (GET, PUT, POST, DELETE), response codes (403 Forbidden, 404 Not Found, 500 Internal Server Error) and standard headers (Accept, Authorization, Cache-Control) are a part of the API.",
            "version": "1.0.0",
            "title": "Swagger Invoice/Billogram",
            "termsOfService": "http://swagger.io/terms/",
            "contact": {
              "email": "billogram@billogram.se"
            }
          },
          "host": "sandbox.billogram.com",
          "basePath": "/api/v2",
          "schemes": [
            "https"
          ],
          "consumes": [],
          "produces": [],
          "paths": {
            ...removed for simplicity display...
              }
            }
          },
          "parameters": {},
          "responses": {},
          "securityDefinitions": {
            "basic_auth": {
              "type": "basic"
            }
          },
          "security": [
            {
              "basic_auth": []
            }
          ],
          "tags": [
            {
              "name": "Billogram Invoice",
              "description": "Handling Billogram/Invoices",
              "externalDocs": {
                "description": "Billogram structure",
                "url": "https://billogram.com/api/documentation#billogram_structure"
              }
            }
          ],
          "externalDocs": {
            "description": "Find out more about Swagger",
            "url": "http://swagger.io"
          }
        },
        "description": "My ARM deployed Custom Connector",
        "displayName": "[parameters('customApis_name')]",
        "iconUri": "/Content/retail/assets/default-connection-icon.6296199fc1d74aa45ca68e1253762025.2.svg"
      },
      "dependsOn": []
    }
  ]
}

Make sure to add both the swagger and the backendService object since the url specified in the serviceUrl since this is mandator and the URL that the Custom Connector are using during runtime, not the one specified in the swagger, this is good for easier management of dev/test/prod environments.

The Custom Connector is a great addon to Logic Apps and by been able to easily manage and deploy them is crusial, so even if this is great to be able to manage my Custom Connector via ARM I’m still missing the possibility to reference my swagger via a url since that would be most suitable way of deploying and kkeping the ARM template and swagger separated.

Posted in: •LogicApps | Tagged: | Logic Apps | ARM Template | Logic Apps Custom Connector

CI with Logic App Custom Connector

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