package com.linkedin.databus2.core.container.request;
/*
*
* Copyright 2013 LinkedIn Corp. All rights reserved
*
* Licensed 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.
*
*/
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.nio.ByteBuffer;
import java.util.concurrent.ExecutorService;
import org.apache.log4j.Logger;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonGenerator.Feature;
import org.codehaus.jackson.ObjectCodec;
import org.codehaus.jackson.impl.WriterBasedGenerator;
import org.codehaus.jackson.io.IOContext;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.util.BufferRecycler;
import com.linkedin.databus2.core.container.request.InvalidRequestParamValueException;
import com.linkedin.databus.core.monitoring.mbean.DatabusMonitoringMBean;
public abstract class AbstractStatsRequestProcessor extends AbstractRequestProcesser
{
public static final String MODULE = AbstractStatsRequestProcessor.class.getName();
public static final Logger LOG = Logger.getLogger(MODULE);
public static final String RESET_PARAM = "reset";
public static final String ENABLED_PARAM = "enabled";
private final ExecutorService _executorService;
private final String _commandName;
public AbstractStatsRequestProcessor(String commandName, ExecutorService executorService)
{
super();
_executorService = executorService;
_commandName = commandName;
}
@Override
public ExecutorService getExecutorService()
{
return _executorService;
}
@Override
public DatabusRequest process(DatabusRequest request) throws IOException,
RequestProcessingException
{
String category = request.getParams().getProperty(DatabusRequest.PATH_PARAM_NAME);
if (null == category)
{
throw new InvalidRequestParamValueException(_commandName, "category", "null");
}
if (! doProcess(category, request))
{
throw new InvalidRequestParamValueException(_commandName, "category", category);
}
return request;
}
protected abstract boolean doProcess(String category, DatabusRequest request)
throws IOException, RequestProcessingException;
protected<T> void enableOrResetStatsMBean(DatabusMonitoringMBean<T> bean, DatabusRequest request)
{
String enabledStr = request.getParams().getProperty(ENABLED_PARAM);
if (null != enabledStr)
{
boolean newEnabled = Boolean.parseBoolean(enabledStr);
bean.setEnabled(newEnabled);
}
String resetStr = request.getParams().getProperty(RESET_PARAM);
if (null != resetStr)
{
bean.reset();
}
}
}