Output HTTP Event Adapter

Output HTTP event adapter is used to send events to a specific Web service location using POST.

Configuring output HTTP event adapter

You can configure the output HTTP event adapter using the management console or using a configuration file.

Configure using the management console

Follow the steps below to configure output HTTP event adapter using the management console. This deploys the event adapter in <PRODUCT_HOME>/repository/deployment/server/outputeventadaptors/ directory.

Log in to the product's management console, and click Configure.
Click Output Event Adaptors in the Event Processor Configs menu, and then click Add Output Event Adaptor.
Enter details as shown in the below example.
Click Add Event Adaptor.

Configure using a configuration file

Follow the steps below to configure output HTTP event adapter using a configuration file.

Create an XML file with the following output HTTP event adapter configurations. Output event adapter implementation must start with <outputEventAdaptor> as the root element.

<outputEventAdaptor name="httpEventAdaptor" statistics="disable"
  trace="disable" type="http" xmlns="http://wso2.org/carbon/eventadaptormanager">
  <property name="http.proxy.host">localhost</property>
  <property name="http.proxy.port">8280</property>
</outputEventAdaptor>

Add the XML file to the <PRODUCT_HOME>/repository/deployment/server/outputeventadaptors/ directory. Since hot deployment is supported in the product, you can simply add/remove output event adapter configuration files to deploy/undeploy output event adapters to/from the server.

After an adapter is successfully added, it gets added to the list of adapters displayed under Event Processor Configs in the Configure menu of the product's management console. Click Edit to change its configuration and redeploy it. This opens an XML-based editor allowing you to edit the event adapter configurations from the UI. Do your modifications and click Update. You can also delete it, enable/disable statistics or enable/disable tracing on it using the provided options in the UI.

Configuring output HTTP event adapter message properties

The configured output event adapters are used in event formatters. With output event adapter message properties, event formatters are able to extract data from event streams and format the output events. Message properties specific to output event adapters of the http type can be configured as follows.

Log into the CEP Management Console. For detailed instructions, see Running the Product.
Click the Configure tab and then click Event Formatters to open the Available Event Formatters page.

Click the name of the event formatter to which the relevant output event adapter is connected. This opens the Event Formatter Details page.
output HTTP event adapter message properties The message properties of an http output event adapter are described below. Change the property values as required.

Property	Description
Headers	Custom HTTP headers that you want to send with the HTTP post
Password	HTTP BasicAuth password
Username	HTTP BasicAuth username
URL	The target HTTP/HTTPS URL
Output Event Type	The outgoing event type to be mapped. The output HTTP event adapter supports XML, JSON, and text mappings.