92 lines
3.8 KiB
Java
92 lines
3.8 KiB
Java
/*
|
|
* Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
|
|
*
|
|
* 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 com.hpcloud.mon.persister.disruptor;
|
|
|
|
import com.google.inject.Inject;
|
|
import com.google.inject.Provider;
|
|
import com.hpcloud.mon.persister.configuration.MonPersisterConfiguration;
|
|
import com.hpcloud.mon.persister.disruptor.event.AlarmStateTransitionedEventFactory;
|
|
import com.hpcloud.mon.persister.disruptor.event.AlarmStateTransitionedEventHandlerFactory;
|
|
import com.lmax.disruptor.EventHandler;
|
|
import com.lmax.disruptor.ExceptionHandler;
|
|
import org.slf4j.Logger;
|
|
import org.slf4j.LoggerFactory;
|
|
|
|
import java.util.concurrent.Executor;
|
|
import java.util.concurrent.Executors;
|
|
|
|
public class AlarmHistoryDisruptorProvider implements Provider<AlarmStateHistoryDisruptor> {
|
|
|
|
private static final Logger logger = LoggerFactory.getLogger(AlarmHistoryDisruptorProvider.class);
|
|
|
|
private final MonPersisterConfiguration configuration;
|
|
private final AlarmStateTransitionedEventHandlerFactory eventHandlerFactory;
|
|
private final ExceptionHandler exceptionHandler;
|
|
private final AlarmStateHistoryDisruptor instance;
|
|
|
|
@Inject
|
|
public AlarmHistoryDisruptorProvider(MonPersisterConfiguration configuration,
|
|
AlarmStateTransitionedEventHandlerFactory eventHandlerFactory,
|
|
ExceptionHandler exceptionHandler) {
|
|
this.configuration = configuration;
|
|
this.eventHandlerFactory = eventHandlerFactory;
|
|
this.exceptionHandler = exceptionHandler;
|
|
this.instance = createInstance();
|
|
}
|
|
|
|
private AlarmStateHistoryDisruptor createInstance() {
|
|
|
|
logger.debug("Creating disruptor...");
|
|
|
|
Executor executor = Executors.newCachedThreadPool();
|
|
AlarmStateTransitionedEventFactory eventFactory = new AlarmStateTransitionedEventFactory();
|
|
|
|
int bufferSize = configuration.getDisruptorConfiguration().getBufferSize();
|
|
logger.debug("Buffer size for instance of disruptor [" + bufferSize + "]");
|
|
|
|
AlarmStateHistoryDisruptor disruptor = new AlarmStateHistoryDisruptor(eventFactory, bufferSize, executor);
|
|
disruptor.handleExceptionsWith(exceptionHandler);
|
|
|
|
int batchSize = configuration.getVerticaOutputProcessorConfiguration().getBatchSize();
|
|
logger.debug("Batch size for each output processor [" + batchSize + "]");
|
|
|
|
int numOutputProcessors = configuration.getDisruptorConfiguration().getNumProcessors();
|
|
logger.debug("Number of output processors [" + numOutputProcessors + "]");
|
|
|
|
EventHandler[] eventHandlers = new EventHandler[numOutputProcessors];
|
|
|
|
for (int i = 0; i < numOutputProcessors; ++i) {
|
|
eventHandlers[i] = eventHandlerFactory.create(i, numOutputProcessors, batchSize);
|
|
}
|
|
|
|
disruptor.handleEventsWith(eventHandlers);
|
|
disruptor.start();
|
|
|
|
logger.debug("Instance of disruptor successfully started");
|
|
logger.debug("Instance of disruptor fully created");
|
|
|
|
return disruptor;
|
|
}
|
|
|
|
public AlarmStateHistoryDisruptor get() {
|
|
return instance;
|
|
}
|
|
}
|