Basic Implementation 

Integrating other applications requires to implement some services that form the integration skeleton:

Create a New Channel 

The first step is to define a new channel. A channel is the way to make your integration visible in the integration section of the admin interface. A channel is a class that has to implement the Oro\Bundle\IntegrationBundle\Provider\ChannelInterface:

src/Acme/Bundle/DemoBundle/Integration/TaskChannel.php 
namespace Acme\Bundle\DemoBundle\Integration;

use Oro\Bundle\IntegrationBundle\Provider\ChannelInterface;

class TaskChannel implements ChannelInterface
{
    /**
     * @inheritDoc
     */
    public function getLabel(): string
    {
        return 'acme.task_channel.label';
    }
}

The ChannelInterface requires you to interface the getLabel() method which is a translation key that will be shown to the user in the UI after being translated.

Additionally, you can implement the Oro\Bundle\IntegrationBundle\Provider\IconAwareIntegrationInterface if you also like to display an icon. You then also need to implement the getIcon() method which returns a path to the icon relative to the project’s web directory:

src/Acme/Bundle/DemoBundle/Integration/TaskChannel.php 
namespace Acme\Bundle\DemoBundle\Integration;

use Oro\Bundle\IntegrationBundle\Provider\ChannelInterface;
use Oro\Bundle\IntegrationBundle\Provider\IconAwareIntegrationInterface;

class TaskChannel implements ChannelInterface, IconAwareIntegrationInterface
{
    /**
     * @inheritDoc
     */
    public function getLabel(): string
    {
        return 'acme.task_channel.label';
    }

    /**
     * @inheritDoc
     */
    public function getIcon(): string
    {
        return 'icons/task.png';
    }
}

After having created the class you need to make it available in the user interface by registering it as a service and tag it with the oro_integration.channel tag and configure the type attribute which must be a unique value that is used internally by the OroIntegrationBundle to refer to the channel:

src/Acme/Bundle/DemoBundle/Resources/config/integration.yml 
services:
    acme_demo.integration.task:
        class: Acme\Bundle\DemoBundle\Integration\TaskChannel
        tags:
            - { name: oro_integration.channel, type: acme_task_channel }

Read Data Using a Transport 

For every channel you can define several ways to read the data from your external application (for example, either via SOAP or a HTTP REST API). This concept is called a transport. A class providing such a transport must implement the Oro\Bundle\IntegrationBundle\Provider\TransportInterface. This interface requires four methods to be implemented:

init(Transport $transport)

Initializes the transport. The passed object contains the settings for this transport that was configured using the form type identified by the name returned by getSettingsFormType(). It is an instance of the class configured by the getSettingsEntityFQCN() method.

getLabel()

The translation key used to display the transport label in the UI.

getSettingsFormType()

The FQCN of the form type that is used to let the user configure transport specific settings (for example, access credentials for API endpoints).

getSettingsEntityFQCN()

The fully-qualified class name of the entity that stores the settings configured through the aforementioned form type (this should be a subclass of Oro\Bundle\IntegrationBundle\Entity\Transport).

Then, register your transport as a service and tag it with the oro_integration.transport tag. Use the channel_type attribute to define the channel the transport is connected with. You need to give the transport an identifier using the type attribute that must be unique across the channel:

src/Acme/Bundle/DemoBundle/Resources/config/integration.yml 
services:
    acme_demo.integration.transport.rest:
        class: Acme\Bundle\DemoBundle\Integration\RestTransport
        tags:
            - { name: oro_integration.transport, channel_type: acme_task_channel, type: rest }

Connect Data to Your Entities 

Note

Please note that this step is necessary when you need to import-export data between your database and the third-party system (e.g. synchronize tasks created in your Oro instance and other application, import/export cart items). Omit this step if you use this instruction to add an integration that requests and receives only credentials/tokens and a short list of available options.

Your final step is to implement the Oro\Bundle\IntegrationBundle\Provider\ConnectorInterface:

getLabel()

The translation key used to display the connector label in the UI.

getImportExportEntityFQCN()

The fully-qualified class name of the entities being imported.

getImportJobName()

The job name that handles the import.

getType()

A string that identifies the connector. This must be unique throughout the channel.

src/Acme/Bundle/DemoBundle/Integration/TaskConnector.php 
 namespace Acme\Bundle\DemoBundle\Integration;

 use Oro\Bundle\IntegrationBundle\Provider\ConnectorInterface;

 class TaskConnector implements ConnectorInterface
 {
     /**
      * @inheritDoc
      */
     public function getLabel(): string
     {
         return 'acme.connector.task.label';
     }

     /**
      * @inheritDoc
      */
     public function getImportEntityFQCN(): string
     {
         return 'Acme\Bundle\DemoBundle\Entity\Task';
     }

     /**
      * @inheritDoc
      */
     public function getImportJobName()
     {
         return 'acme_task_import';
     }

     /**
      * @inheritDoc
      */
     public function getType(): string
     {
         return 'task';
     }
 }

The class implementing the ConnectorInterface must then be registered as a service tagged with oro_integration.connector. Use the channel_type attribute to define the channel that the connector is associated with. The type attribute must get the same value that is returned by the connector’s getType() method:

src/Acme/Bundle/DemoBundle/Resources/config/integration.yml 
services:
    acme_demo.connector.task
        class: Acme\Bundle\DemoBundle\Integration\TaskConnector
        tags:
            - { name: oro_integration.connector, channel_type: acme_task_channel, type: task }