Custom action plugins

A custom action plugin is a plugin that can be associated to a custom action node in an automation, allowing you to trigger a custom action in an automation.

This feature is useful for triggering actions not available in the current list of actions in automations.

If you don't know what a plugin is, you can find complete documentation in the specific section.

Endpoints to implement

Custom action plugins have only one predefined endpoint to implement.

Trigger a custom action

POST myworker/v1/scenario_custom_actions

This entry point is called any time a user point goes through a custom action node in an automation.

Request Body

Name	Type	Description
user_point_id	string	The ID of the user point.
custom_action_id	string	The ID of the custom action plugin instance. Used to retrieve the instance properties.

200

{
    "status": "ok"
}

500 Here is what the plugin should respond if it encounters an unexpected error.

{
  "status": "error",
  "message": "..."
}

See Plugin Instances to learn why you should use the custom_action_id parameter to retrieve the instance properties.

Available outbound services

The code of the custom action plugin can call the following API endpoints to retrieve its instance context.

Retrieve the instance

GET https://api.mediarithmics.com/v1/scenario_custom_actions/:id

Use the custom_action_id from the incoming request to retrieve the custom action plugin instance that has been called.

Path Parameters

Name	Type	Description
id	string	ID of the custom action plugin instance, typically the custom_action_id from the incoming request.

200

{
  "status": "ok",
  "data": {
    "id": "1000",
    "name": "Custom action plugin example",
    "organisation_id": "1000",
    "group_id": "com.example-organisation.scenario-custom-action",
    "artifact_id": "example-organisation-example-custom-action"
    "creation_ts": 1617100419508,
    "created_by": "28453014",
    "version_id": "1001",
    "version_value": "1.0.0"
  }
}

Retrieve the instance properties

GET https://api.mediarithmics.com/v1/scenario_custom_actions/:id/properties

Get the properties associated with the custom action plugin instance.

Path Parameters

Name	Type	Description
id	string	ID of the custom action plugin instance, typically thecustom_action_id from the incoming request

200

{
  "status": "ok",
  "data": [
    {
      "technical_name": "provider",
      "value": { "value": "mediarithmics" },
      "property_type": "STRING",
      "origin": "PLUGIN_STATIC",
      "writable": true,
      "deletable": false
    },
    {
      "technical_name": "name",
      "value": { "value": "Custom action example" },
      "property_type": "STRING",
      "origin": "PLUGIN_STATIC",
      "writable": false,
      "deletable": false
    }
  ]
}

Creating a custom action plugin

See the plugins documentation to see how plugins are created and deployed.

A custom action plugin has the SCENARIO_CUSTOM_ACTION plugin type. Its group id should be {domain.organisation.scenario-custom-action} (for example com.mediarithmics.scenario-custom-action).

Its artifact id should be the name of the custom action plugin, i.e. example-custom-action.

Use our Plugin SDK to create your custom action plugin in Node.js: the required routes are already defined and you only have to override specific functions.

You can find a sample custom action plugin in the examples folder of the plugin SDK.

We can provide you with a Hello World project using our SDK. Please contact your support to gain access to it.

The project structure and files work as with every other plugin.

Interfaces to implement

You should extend CustomActionBasePlugin class and implement the onCustomActionCall function from the plugin SDK.

The onCustomActionCall function is called every time a user point runs through a custom action node in an automation. It is responsible for implementing the custom action.

Don't forget to catch your errors. You should log / respond with the appropriate message to facilitate debugging.

import { core } from '@mediarithmics/plugins-nodejs-sdk';

export class MyCustomActionPlugin extends core.CustomActionBasePlugin {
  protected onCustomActionCall(
    request: core.CustomActionRequest,
    instanceContext: core.CustomActionBaseInstanceContext
  ): Promise<core.CustomActionPluginResponse> {

    // do stuff here

    const response: core.CustomActionPluginResponse = {
      status: 'ok',
    };

    return Promise.resolve(response);
  }
}

Create a custom action plugin instance

POST https://api.mediarithmics.com/v1/scenario_custom_actions

Use this method to create a custom action plugin instance attached to an organisation. This will display the custom action as a choice in the custom action automation node.

Request Body

Name	Type	Description
organisation_id	string	The ID of the organisation you want to attach this instance to.
name	string	The name for this instance. If not given, the instance ID will be used in the interface instead.
artifact_id	string	The artifact ID of the plugin.
group_id	string	The group ID of the plugin.

200

{
    "status": "ok",
    "data": {
        "id": "string",
        "name": "string",
        "organisation_id": "string",
        "group_id": "string",
        "artifact_id": "string",
        "creation_ts": 1618842498220,
        "created_by": "string",
        "version_id": "string",
        "version_value": "string"
    }
}

Update a custom action plugin instance property

PUT https://api.mediarithmics.com/v1/scenario_custom_actions/:id/properties/technical_name=:name

Use this method to update a property for the custom action plugin instance.

Path Parameters

Name	Type	Description
name	string	The technical name of the property to update.
id	string	The ID for the custom action plugin instance.

Request Body

Name	Type	Description
deletable	boolean
writable	boolean
origin	string	One of PLUGIN_STATIC, PLUGIN, INSTANCE.
property_type	string	One of DOUBLE, INT, BOOLEAN, ASSET, DATA_FILE, URL, STRING, AD_LAYOUT, STYLE_SHEET, PIXEL_TAG, RECOMMENDER, NATIVE_IMAGE, NATIVE_TITLE, NATIVE_DATA.
technical_name	string	The technical name of the property to update.
value	object	Value format depends on property type. If property type is STRING, value will be an object {"value": "string"}.

200

{
    "status": "ok",
    "data": {
        "technical_name": "string",
        "value": {
            "value": "string"
        },
        "property_type": "STRING",
        "origin": "PLUGIN",
        "writable": true,
        "deletable": false
    }
}

Debugging

Plugin logs and metrics

You can monitor custom action plugins as you do with all plugins.