Page Comparison

To use the Facebook connector, add the <facebook.init> element in your configuration before carrying out any other Faceboook operationsoperation. Most Graph API requests require the use of access tokens, which the app  that the client application can generate by implementing Facebook Login.

The basic strategy procedure to get a user token is for the client to request access and permission via the Facebook Login dialog. After the user is authenticated, the user is redirected to the user consent dialog. On completion of consent, the access token is returned to the client. For further more information, refer to access tokens and how to generate them using Facebook Login.

<facebook.init>
	<apiUrl>{$ctx:apiUrl}</apiUrl>
	<apiVersion>{$ctx:apiVersion}</apiVersion>
	<accessToken>{$ctx:accessToken}</accessToken>
</facebook.init>

Properties

• apiUrl: The URL of the Facebook API (https://graph.facebook.com)

• apiVersion: Version The version of the Facebook API

• accessToken: The access token that allows making requests to the API on behalf of a user.

Obtaining an access token

This method allows you to obtain an app access tokenTo get your access token, you need to add <facebook.getAppAccessToken> to your configuration.

<facebook.getAppAccessToken>
	<clientId>{$ctx:clientId}</clientId>
	<clientSecret>{$ctx:clientSecret}</clientSecret>
</facebook.getAppAccessToken>                                

Properties

• clientId: Value of your The API key given that you receive when you register your application with Facebook.
• clientSecret: Value of your The client secret key given that you receive when you register your application with Facebook.

...

Following is a sample REST request for the getAppAccessToken method.:

{
	"apiUrl":"https://graph.facebook.com",
	"clientId":"269855929842963",
	"clientSecret":"6a0920b2cdf3787c993b67b9a400ad0b"
}

Obtaining a page token

This method allows you to To obtain a page access token, you need to add <facebook.getPageAccessToken> to your configuration.

<facebook.getPageAccessToken>
	<pageId>{$ctx:pageId}</pageId>
</facebook.getPageAccessToken>                                

Properties

• pageId:  ID The ID of your Facebook page.

Sample request

Following is a sample REST request for the getPageAccessToken method.:

{
	"apiUrl":"https://graph.facebook.com",
 	"apiVersion":"v2.5",
	"accessToken":"CAACEdEose0cBAHr8S2hVPNpCy1DbIuGHlmwbWubyR6YSr0wxgD0ncZBYfGrRvuZC88KqChF44ZAhMRZCPUeYM6xQaHuf1pCzfAwVMrPT4GUZAIOwbc2aBRb5BD6YlA8YKBgKInK08368Xh78arj3ORrUNZCyCc",
	"pageId":"102898890060274"
}

...

<albumId>{$url:album_id}</albumId>

Since we are constructing the endpoint is constructed inside the proxy, init does it is not need to be called for the necessary to call the init method for multipart operations.

Sample proxy

...

to handle multipart operations

<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="facebook_postPhotoToAlbum"
       transports="https,http"
       statistics="disable"
       trace="disable"
       startOnLoad="true">
   <target>
      <inSequence>
         <facebook.postPhotoToAlbum>
            <albumId>{$url:album_id}</albumId>
			<apiUrl>https://graph.facebook.com</apiUrl>
			<apiVersion>{$url:apiVersion}</apiVersion>
			<accessToken>{$url:accessToken}</accessToken>
         </facebook.postPhotoToAlbum>
         <respond/>
      </inSequence>
      <outSequence>
         <send/>
      </outSequence>
   </target>
   <description/>
</proxy>

...

curl -X POST \
    -d "source=%7Bimage-data%7D" \
       http://localhost:8280/services/facebook_postPhotoToAlbum/?album_id=1403293536601941

Additional information

 Ensure that the following Axis2 configurations are added and enabled in the <ESB_HOME>\repository\conf\axis2\axis2.xml file.

...