93 lines
3.6 KiB
Java
93 lines
3.6 KiB
Java
/*
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* Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hpcloud.mon.persister.disruptor;
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import com.google.inject.Inject;
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import com.google.inject.Provider;
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import com.hpcloud.mon.persister.configuration.MonPersisterConfiguration;
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import com.hpcloud.mon.persister.disruptor.event.MetricFactory;
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import com.hpcloud.mon.persister.disruptor.event.MetricHandlerFactory;
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import com.lmax.disruptor.EventHandler;
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import com.lmax.disruptor.ExceptionHandler;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Executors;
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public class MetricDisruptorProvider implements Provider<MetricDisruptor> {
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private static final Logger logger = LoggerFactory.getLogger(MetricDisruptorProvider.class);
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private final MonPersisterConfiguration configuration;
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private final MetricHandlerFactory eventHandlerFactory;
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private final ExceptionHandler exceptionHandler;
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private final MetricDisruptor instance;
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@Inject
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public MetricDisruptorProvider(MonPersisterConfiguration configuration,
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MetricHandlerFactory eventHandlerFactory,
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ExceptionHandler exceptionHandler) {
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this.configuration = configuration;
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this.eventHandlerFactory = eventHandlerFactory;
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this.exceptionHandler = exceptionHandler;
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this.instance = createInstance();
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}
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private MetricDisruptor createInstance() {
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logger.debug("Creating disruptor...");
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Executor executor = Executors.newCachedThreadPool();
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MetricFactory eventFactory = new MetricFactory();
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int bufferSize = configuration.getDisruptorConfiguration().getBufferSize();
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logger.debug("Buffer size for instance of disruptor [" + bufferSize + "]");
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MetricDisruptor disruptor = new MetricDisruptor(eventFactory, bufferSize, executor);
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disruptor.handleExceptionsWith(exceptionHandler);
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int batchSize = configuration.getVerticaOutputProcessorConfiguration().getBatchSize();
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logger.debug("Batch size for each output processor [" + batchSize + "]");
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int numOutputProcessors = configuration.getDisruptorConfiguration().getNumProcessors();
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logger.debug("Number of output processors [" + numOutputProcessors + "]");
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EventHandler[] eventHandlers = new EventHandler[numOutputProcessors];
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for (int i = 0; i < numOutputProcessors; ++i) {
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eventHandlers[i] = eventHandlerFactory.create(i, numOutputProcessors, batchSize);
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}
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disruptor.handleEventsWith(eventHandlers);
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disruptor.start();
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logger.debug("Instance of disruptor successfully started");
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logger.debug("Instance of disruptor fully created");
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return disruptor;
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}
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public MetricDisruptor get() {
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return instance;
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}
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}
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