OSGI Enroute Easse Simple Adapter framework Java Library Library Technology Document
OSGI Enroute Easse Simple Adapter framework Java Library Library Technology Document
Introduction:
OSGI Enroute Easse Simple Adapter framework is a Java class library for achieving simple adapters in OSGI environments.This framework aims to simplify the process of integrating and using Easse Simple (Evensto Anystream Synchronly and Scalable Easily Simple) library.Through this framework, developers can more easily integrate the functions of the Easse Simple library into their projects to achieve synchronous, scalable and easy -to -use event stream data processing.
Install:
To use OSGI Enroute Easse Simple Adapter framework, you first need to install and start the Easse Simple library in the OSGI container.Then add the Easse Simple Adapter library to the construction path of the project.
Instructions:
1. Create an OSGI Bundle project.
public class MyBundleActivator implements BundleActivator {
private ServiceRegistration<EventHandler> registration;
@Override
public void start(BundleContext context) throws Exception {
EventHandler myEventHandler = new MyEventHandler();
Dictionary<String, Object> properties = new Hashtable<>();
properties.put(EventConstants.EVENT_TOPIC, "com/example/mytopic");
registration = context.registerService(
EventHandler.class, myEventHandler, properties);
}
@Override
public void stop(BundleContext context) throws Exception {
registration.unregister();
}
}
public class MyEventHandler implements EventHandler {
@Override
public void handleEvent(Event event) {
// Treatment event
}
}
2. Add dependence on the Easse Simple Adapter library to the POM.XML file.
<dependencies>
<dependency>
<groupId>org.osgi.enroute.bundles</groupId>
<artifactId>org.osgi.enroute.easse.simple.adapter</artifactId>
<version>2.0.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
3. Define event processor services in the project's OSGI configuration file (such as `SRC/main/Resources/OSGI-INF/MyEventhandler.prproperties`).
service.factoryPid=org.osgi.easse.simple.adapter.handlers
com.example.myhandler.pid=com.example.myhandler
event.topics=com/example/mytopic
4. Execute the MVN Build command to build a project.
5. Install the generated bundle file (eg, `target/mybundle.jar`) in an OSGI container and start.
6. When the event themes occur, the HandleEvent method of the MyEventhandler class will be called.
Summarize:
OSGI Enroute Easse Simple Adapter framework provides a way to simplify the use of the Easse Simple library in the OSGI environment.Through this framework, developers can more easily integrate and use the functions of using the EASSE SIMPLE library to achieve synchronous, scalable and easy -to -use event flow data processing.The above is a simple example. You can expand and customize according to your needs.
Note: The above code and configuration are only the purpose of demonstration, and the specific realization may be different according to your actual needs.Please refer to relevant documents to get more details.
