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SampleEventPublisherServiceComponent.java
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SampleEventPublisherServiceComponent.java
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/*
* Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.wso2.event.publisher.sample.internal;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.service.component.ComponentContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.wso2.carbon.event.stream.core.EventStreamService;
import org.wso2.carbon.identity.event.handler.AbstractEventHandler;
import org.wso2.event.publisher.sample.SampleEventPublisher;
/**
* Registers the publisher as an osgi component.
*/
@Component(
name = "sample.event.publisher",
immediate = true
)
public class SampleEventPublisherServiceComponent {
private static Log log = LogFactory.getLog(SampleEventPublisherServiceComponent.class);
@Activate
protected void activate(ComponentContext context) {
if (log.isDebugEnabled()) {
log.debug("Activating SampleEventPublisherServiceComponent");
}
try {
context.getBundleContext().registerService(AbstractEventHandler.class.getName(),
new SampleEventPublisher(), null);
if (log.isDebugEnabled()) {
log.debug("SampleEventPublisherServiceComponent is activated");
}
} catch (Throwable e) {
log.error("Error while activating SampleEventPublisherServiceComponent ", e);
}
}
@Reference(
name = "event.stream.service",
service = EventStreamService.class,
cardinality = ReferenceCardinality.MANDATORY,
policy = ReferencePolicy.DYNAMIC,
unbind = "unsetEventStreamService"
)
protected void setEventStreamService(EventStreamService publisherService) {
SampleEventPublisherDataHolder.getInstance().setPublisherService(publisherService);
}
protected void unsetEventStreamService(EventStreamService publisherService) {
SampleEventPublisherDataHolder.getInstance().setPublisherService(null);
}
}