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Using Anypoint Code Builder to Configure A2A Connector 2.0

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To use Anypoint Code Builder to configure a connector or module, create a basic integration project in Anypoint Code Builder, add connectors and other components to your Mule application to process your business logic, and configure the attributes.

Before You Begin

Before creating an integration project, you must:

To use this connector, you must be familiar with:

  • The connector’s API

  • Anypoint Connectors

  • Mule runtime engine (Mule)

Create a New Integration Project

To create a new integration project:

  1. In the activity bar of the IDE, click the Anypoint Code Builder icon (Anypoint Code Builder) icon.

  2. From Quick Actions, click Develop an Integration:

    Develop an Integration link highlighted in the Getting started section

  3. Complete the following in the Develop an Integration form:

    Attribute Value

    Project Name

    Unique name for your project.

    This name is used as the title and name of the integration project file. For example, if the project name is "Salesforce Integration," the project file name is salesforce-integration.

    Project Location

    Your home directory or another directory you create. Click Browse to select a different directory for the integration project.

    Don’t create the project within another project directory.

    See Adding Folders to Your Home Directory.

  4. Select the type of project to create by selecting either the Empty Project or Template or Example card.

  5. Select the Mule runtime and Java Version for your app.

  6. Click Create Project.

Add the Connector to Your Integration Project

Anypoint Connectors provide operations for retrieving, modifying, and sending data to and from systems.

In addition to the built-in connectors that Anypoint Code Builder provides, you can download many other connectors from Anypoint Exchange.

To import a connector from Exchange and add it to your configuration:

  1. In the Explorer view, open the configuration XML file for your project, such as my-project-name.xml.

  2. Click the Show Mule graphical mode icon (Show Mule graphical mode) icon in the activity bar to open the canvas UI if it doesn’t open automatically.

  3. Add the connector the same way you added other components from the canvas UI:

    1. In the canvas UI, click the Add component icon (Add component) icon.

    2. In the Add Component panel, click Connectors.

    3. Click the connector name and then click the operation to add, such as Publish:

      Add Publish operation from Anypoint MQ Connector

      If the connector is not available locally, click the Search in Exchange icon (Search in Exchange) toggle:

      Search in Exchange toggle

      1 Search locally
      2 Search in Exchange

    4. Select the connector to add to your project.

    5. Select the operation from the Add Component panel.

Adding a connector to an integration project does not make that connector available to other projects in your Anypoint Code Builder workspace.

Configure the Source For the Flow

A source (trigger) starts the flow when specified conditions are met. You can configure these sources for A2A Connector:

  • A2A Server - Task Authorizer Listener

    A2A Server authorization listener that gates auth-required operations before they execute. It runs for both the JSON-RPC and HTTP+JSON transport bindings. If the flow completes successfully, the request is authorized. If the flow raises an error, the request is denied and an A2A:UNAUTHORIZED error is returned to the caller. The current operation name is available on attributes.operationName so a single listener can gate multiple operations. This source supersedes the A2A Server - Authorization Listener from earlier versions.

  • A2A Server - Task Listener

    Listens for and receives incoming A2A protocol-compliant requests from other AI agents, enabling the Mule-based agent to act as an A2A server and respond to tasks. This unified source serves blocking, non-blocking, and streaming SendMessage requests over both transport bindings; there is no separate stream listener.

  • A2A Server - On Async Request Listener

    Server-side listener that customizes the initial Task returned for streaming (SendStreamingMessage) and non-blocking (SendMessage with returnImmediately=true) requests. Use this source in conjunction with A2A Server - Task Listener.

  • A2A Server - On Push Notification Set Listener

    Validates the push notification configuration before routing the request to the A2A Server - Task Listener source.

For example, to configure an A2A Server - Task Listener source, follow these steps:

  1. Click the A2A Server - Task Listener component on the canvas.

  2. (Optional) Click the edit icon to change the name of the A2A Server - Task Listener component.

  3. In the General tab, configure the connection for the A2A Server. See A2A Server Configuration.

  4. Select the Advanced tab to configure these attributes:

    Attribute Description Required

    Primary node only

    Select this option to execute the A2A Server - Task Listener source on the primary node only when running in a cluster.

    No

    Redelivery policy

    Configures the redelivery policy for executing requests that generate errors. You can add a redelivery policy to any source in a flow.

    No

    Reconnection strategy

    Retry strategy in case of connectivity errors. When an operation in a Mule application fails to connect to an external server, the default behavior is for the operation to fail immediately and return a connectivity error. You can modify the default behavior by configuring the reconnection strategy for the operation.

    No

Add Components to Your Project

Add components to your integration project to build a flow:

  1. In the Explorer view, open the XML file for your project, such as my-project-name.xml.

  2. Select Build a Flow from the start card to create an empty flow:

    Anypoint Code Builder canvas with starting cards with the options to start from scratch, build a flow, or build a subflow

  3. Change the name of the flow:

    1. Click Flow.

    2. Click the edit icon.

      Arrow pointing to the flow name edit pencil icon

    3. Enter the flow name, and click the checkmark.

    4. In the canvas UI, click the Add component icon (Add component) icon.

    5. In the Add Component panel, search for and select your component from the results. The following example shows the Listener component from the HTTP search results:

      Listener component highlighted in the Add Component section

      The configuration XML file now includes the XML for the HTTP Listener into the <flow/> element, for example:

      <flow name="getFlights" >
  <http:listener path="" config-ref="" doc:name="Listener" doc:id="ojzfry" />
</flow>

Configure the Component Attributes

After you add components to your integration project, configure the attributes in the component UI, or configure the attributes directly in the XML code editor.

Connector XML tags start with a namespace followed by an operation, following the syntax namespace:operation, such as <db:select/> for a Select operation in Anypoint Connector for Database (Database Connector).

You can use autocomplete from an expression (fx) field for a component to select DataWeave functions from the Core module and other values accepted in this field.

Create a New Configuration XML File

Anypoint Code Builder creates the initial Mule configuration XML file in src/main/mule within the Mule project. This file contains global configurations and flow structures.

You can create additional configuration files, for example, to store global configurations.

To create a new XML configuration file:

  1. In the Explorer view, right-click the mule folder (src/main/mule) and select New File.

    Alternatively, use the menu.

    Show me how

    Select the mule folder, and then:

    • In the desktop IDE, select File > New Mule Configuration File.

    • In the cloud IDE, click the (menu) icon, and select File > New File.

  2. Enter a name for the new file with the .xml extension.

  3. In the Editor view for the new file, press Ctrl+Space to display available options.

  4. Select Empty mule configuration:

    New Mule configuration option in auto-correct

    This command adds the following code to the file:

    <?xml version="1.0" encoding="UTF-8"?>
<mule xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
    xmlns:ee="http://www.mulesoft.org/schema/mule/ee/core"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
    http://www.mulesoft.org/schema/mule/ee/core http://www.mulesoft.org/schema/mule/ee/core/current/mule-ee.xsd">

</mule>

Debug the App

Debug your Mule application using the embedded debugger in Anypoint Code Builder.

See Debugging Mule Applications.

See Also

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