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To use the Yammer connector, add the <yammer.init> element in your configuration before carrying out any other Yammer operations. 

Yammer authentication will be carried out by an OAuth 2 flow beginning with the user authenticating with the user's Yammer credentials. The user then authorizes your app to connect to the user's Yammer network. The end result is a token your app will use to write events to Yammer and retrieve Yammer data. For more information on authentication, see https://developer.yammer.com/introduction/#gs-authentication.

<yammer.init>
    <apiUrl>{$ctx:apiUrl}</apiUrl>
    <apiToken>{$ctx:apiToken}</apiToken>
	<responseType>{$ctx:responseType}</responseType>
</yammer.init>

Properties 

• apiUrl: The URL to access the Yammer API.
• apiToken: The API token of the account.
• responseType: The response type of the method call.

Additional information

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

Required message formatters

<messageFormatter contentType="text/html" class="org.wso2.carbon.relay.ExpandingMessageFormatter"/>
<messageFormatter contentType="application/octet-stream" class="org.apache.axis2.format.BinaryFormatter"/>
<messageFormatter contentType="application/xml" class="org.wso2.carbon.relay.ExpandingMessageFormatter"/>

Required message builders

<messageBuilder contentType="text/html" class="org.wso2.carbon.relay.BinaryRelayBuilder"/>
<messageBuilder contentType="application/octet-stream" class="org.wso2.carbon.relay.BinaryRelayBuilder"/>
<messageBuilder contentType="application/xml" class="org.wso2.carbon.relay.BinaryRelayBuilder"/>

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