/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.stratos.common.statistics.publisher;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.databridge.agent.thrift.Agent;
import org.wso2.carbon.databridge.agent.thrift.AsyncDataPublisher;
import org.wso2.carbon.databridge.agent.thrift.conf.AgentConfiguration;
import org.wso2.carbon.databridge.agent.thrift.exception.AgentException;
import org.wso2.carbon.databridge.commons.Event;
import org.wso2.carbon.databridge.commons.StreamDefinition;
import java.util.HashMap;
/**
* WSO2 CEP statistics publisher.
*/
public class WSO2CEPStatisticsPublisher implements StatisticsPublisher {
private static final Log log = LogFactory.getLog(WSO2CEPStatisticsPublisher.class);
private StreamDefinition streamDefinition;
private AsyncDataPublisher asyncDataPublisher;
private String ip;
private String port;
private String username;
private String password;
private boolean enabled = false;
public WSO2CEPStatisticsPublisher(StreamDefinition streamDefinition) {
this.streamDefinition = streamDefinition;
this.ip = System.getProperty("thrift.receiver.ip");
this.port = System.getProperty("thrift.receiver.port");
this.username = "admin";
this.password = "admin";
enabled = Boolean.getBoolean("cep.stats.publisher.enabled");
if (enabled) {
init();
}
}
private void init() {
AgentConfiguration agentConfiguration = new AgentConfiguration();
Agent agent = new Agent(agentConfiguration);
// Initialize asynchronous data publisher
asyncDataPublisher = new AsyncDataPublisher("tcp://" + ip + ":" + port + "", username, password, agent);
asyncDataPublisher.addStreamDefinition(streamDefinition);
}
@Override
public void setEnabled(boolean enabled) {
this.enabled = enabled;
if (this.enabled) {
init();
}
}
@Override
public boolean isEnabled() {
return enabled;
}
@Override
public void publish(Object[] payload) {
if (!isEnabled()) {
throw new RuntimeException("Statistics publisher is not enabled");
}
Event event = new Event();
event.setPayloadData(payload);
event.setArbitraryDataMap(new HashMap<String, String>());
try {
if (log.isDebugEnabled()) {
log.debug(String.format("Publishing cep event: [stream] %s [version] %s", streamDefinition.getName(), streamDefinition.getVersion()));
}
asyncDataPublisher.publish(streamDefinition.getName(), streamDefinition.getVersion(), event);
} catch (AgentException e) {
if (log.isErrorEnabled()) {
log.error(String.format("Could not publish cep event: [stream] %s [version] %s", streamDefinition.getName(), streamDefinition.getVersion()), e);
}
}
}
}