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Hippo Event Component

The hippoevent: component allows you to subscribe events from Hippo Event Bus.

The hippoevent: component subscribes the following types of HippoEvent and transforms it to a JSONObject (net.sf.json.JSONObject) as message exchange body:

  • org.onehippo.cms7.event.HippoEvent
  • org.onehippo.cms7.event.HippoSecurityEvent
  • org.onehippo.repository.events.HippoWorkflowEvent
  • org.hippoecm.repository.standardworkflow.FolderWorkflowEvent

For details on how it translates HippoEvent to a JSONObject, please see the JSON message example shown below and the converter source code: HippoEventConverter.java.

Maven users will need to add the following repository configuration and dependency to their pom.xml to use this component:

    <repository>
      <id>hippo-maven2-forge</id>
      <name>Hippo Maven 2 Forge</name>
      <url>https://maven.onehippo.com/maven2-forge/</url>
    </repository>
      
      <dependency>
        <groupId>org.onehippo.forge.camel-hippoevt</groupId>
        <artifactId>camel-hippoevt</artifactId>
        <version>${camel-hippoevt.version}</version>
      </dependency>
      

URI Format

hippoevent:
        

Usage

Consumer

The consumer will register an event listener in Hippo Event Bus.

You can specify parameters like the following:

Name Default Value Description
_persisted false Flag whether or not to register listeners for persisted events from Hippo Repository via Hippo Event Bus.
_channelName Applied to a persisted event listener only.
The listener's channel name is used to identify the listener after a restart, and it should be unique in the container.
_onlyNewEvents true Applied to a persisted event listener only.
Flag whether or not to receive only new events from Hippo Repository via Hippo Event Bus.
category Comma separated category names. Only an event having any of the specified category value will be received.
See org.onehippo.cms7.event.HippoEventConstants for available cateogries.
Note: If the consumer is for persisted events with '_persisted=true', then the first argument of this category parameter will be used in PersistedHippoEventListener#getEventCategory().
action Comma separated action names. Only an event having any of the specified action value will be received.
See org.onehippo.cms7.event.HippoEvent for detail.
application Comma separated application names. Only an event having any of the specified application value will be received.
See org.onehippo.cms7.event.HippoEvent for detail.
user Comma separated user names. Only an event having any of the specified user value will be received.
See org.onehippo.cms7.event.HippoEvent for detail.
methodName Comma separated method names. Only an event having any of the specified method name value will be received.
See org.onehippo.cms7.event.HippoEvent for detail.

So, for example, if you set the parameters like the following example, then the hippoevent: component will consume a HippoEvent object only when the 'category' property value of the HippoEvent object is 'workflow' and the 'application' propery value is either 'cms' or 'site'.

          hippoevent:?category=workflow&application=cms,site
          

You will see all the available property names (which can be used as parameter names as well) below.

The message body received by the consumer is a net.sf.json.JSONObject instance which should look like the following examples:

Note: The comment blocks (which are actually disallowed in JSON format) are only for description purpose. At runtime, the comments are not included.

  {

    // metadata property names start with '_'.

    // A HippoEvent class name: "org.onehippo.cms7.event.HippoEvent",
    //                          "org.onehippo.repository.events.HippoWorkflowEvent",
    //                          "org.hippoecm.repository.standardworkflow.FolderWorkflowEvent", or
    //                          "org.onehippo.cms7.event.HippoSecurityEvent".
    "_eventClassName" : "org.onehippo.cms7.event.HippoEvent";

    // Properties of org.onehippo.cms7.event.HippoEvent:
    "action" : "...",                          // See HippoEvent#action()
    "application" : "...",                     // HippoEvent#application()
    "category" : "...",                        // See HippoEvent#category()
    "sealed" : false,                          // See HippoEvent#isSealed()
    "message" : "...",                         // See HippoEvent#message()
    "result" : "...",                          // See HippoEvent#result()
    "system" : false,                          // See HippoEvent#system()
    "timestamp" : 1234567890,                  // See HippoEvent#timestamp()
    "user" : "...",                            // See HippoEvent#user()

    // Properties in case of org.onehippo.repository.events.HippoWorkflowEvent
    "arguments" : [ "value1", ..., "valueN" ], // See HippoWorkflowEvent#arguments()
    "className" : "...",                       // See HippoWorkflowEvent#className()
    "exception" : "...",                       // HippoWorkflowEvent#exception()#toString()
    "interaction" : "...",                     // See HippoWorkflowEvent#interaction()
    "interactionId" : "...",                   // See HippoWorkflowEvent#interactionId()
    "methodName" : "...",                      // See HippoWorkflowEvent#methodName()
    "returnType" : "...",                      // See HippoWorkflowEvent#returnType()
    "returnValue" : "...",                     // See HippoWorkflowEvent#returnValue()
    "subjectId" : "...",                       // See HippoWorkflowEvent#subjectId()
    "subjectPath" : "...",                     // See HippoWorkflowEvent#subjectPath()
    "workflowCategory" : "...",                // See HippoWorkflowEvent#workflowCategory()
    "workflowName" : "...",                    // See HippoWorkflowEvent#workflowName()
    "documentType" : "ns1:news",               // See HippoWorkflowEvent#documentType()
    "documentPath" : "...",                    // See HippoWorkflowEvent#documentPath()
    "handleUuid" : "...",                      // See HippoWorkflowEvent#handleUuid()

    // Properties in case of org.hippoecm.repository.standardworkflow.FolderWorkflowEvent:
    "type" : "...",                            // FolderWorkflowEvent#type()#toString()

    // Properties in case of org.onehippo.cms7.event.HippoSecurityEvent:
    "success" : true,                          // See HippoSecurityEvent#exception()

  }
          

Examples

The following code will register a local EventListener in Hippo Event Bus. And it will consume HippoEvent only when the 'category' property value is 'workflow' and the 'action' property value is either 'publish' or 'depublish'.

<route>
  <from uri="hippoevent:?category=workflow&amp;action=publish,depublish" />
  <to uri="direct:execute-reaction" />
</route>
        

The following code will register a persisted EventListener in Hippo Event Bus. And it will consume HippoEvent only when the 'category' property value is 'workflow' and the 'action' property value is either 'publish' or 'depublish'.

<route>
  <from uri="hippoevent:?_persisted=true&amp;_channelName=mylistener&amp;category=workflow&amp;action=publish,depublish" />
  <to uri="direct:execute-reaction" />
</route>
        

See Also in Apache Camel Site