package com.linkedin.databus.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.util.concurrent.ExecutorService;
import org.apache.log4j.Logger;
import com.linkedin.databus.container.netty.HttpRelay;
import com.linkedin.databus.core.BufferInfoResponse;
import com.linkedin.databus.core.DbusEventBuffer;
import com.linkedin.databus.core.DbusEventBufferMult;
import com.linkedin.databus.core.data_model.PhysicalPartition;
import com.linkedin.databus2.core.BufferNotFoundException;
import com.linkedin.databus2.core.DatabusException;
import com.linkedin.databus2.core.container.request.AbstractRequestProcesser;
import com.linkedin.databus2.core.container.request.ContainerStatsRequestProcessor;
import com.linkedin.databus2.core.container.request.DatabusRequest;
import com.linkedin.databus2.core.container.request.InvalidRequestParamValueException;
import com.linkedin.databus2.core.container.request.RequestProcessingException;
import com.linkedin.databus2.core.container.request.RequestProcessor;
import com.linkedin.databus2.core.seq.MultiServerSequenceNumberHandler;
import com.linkedin.databus2.relay.config.PhysicalSourceStaticConfig;
public class BufferInfoRequestProcessor
extends AbstractRequestProcesser
{
public static final String MODULE = BufferInfoRequestProcessor.class.getName();
public static final Logger LOG = Logger.getLogger(MODULE);
public static final String COMMAND_NAME = "bufferInfo";
private final static String INBOUND_VIEW = "inbound/";
private final ExecutorService _executorService;
private final DbusEventBufferMult _eventBufferMult;
public BufferInfoRequestProcessor(ExecutorService executorService,
DbusEventBufferMult eventBuffer)
{
super();
_executorService = executorService;
_eventBufferMult = eventBuffer;
}
@Override
public DatabusRequest process(DatabusRequest request) throws IOException,
RequestProcessingException, DatabusException
{
String category = request.getParams().getProperty(DatabusRequest.PATH_PARAM_NAME);
if (null == category)
{
throw new InvalidRequestParamValueException(COMMAND_NAME, "category", "null");
}
if ( category.startsWith(INBOUND_VIEW))
{
String sourceIdStr = category.substring(INBOUND_VIEW.length());
sourceIdStr = sourceIdStr.replace('/', ':');
PhysicalPartition pPartition = PhysicalPartition.parsePhysicalPartitionString(sourceIdStr, ":");
processInboundRequest(request,pPartition);
} else {
throw new InvalidRequestParamValueException(COMMAND_NAME, "category", category);
}
return request;
}
private void processInboundRequest(DatabusRequest request, PhysicalPartition pPart)
throws IOException, DatabusException
{
DbusEventBuffer evb = _eventBufferMult.getOneBuffer(pPart);
if ( null == evb)
{
LOG.error("BufferInfoRequest : Buffer not available for physical partition :" + pPart);
throw new BufferNotFoundException("Buffer not available for partition :" + pPart);
}
BufferInfoResponse response = new BufferInfoResponse();
response.setMinScn(evb.getMinScn());
response.setMaxScn(evb.lastWrittenScn());
response.setTimestampFirstEvent(evb.getTimestampOfFirstEvent());
response.setTimestampLatestEvent(evb.getTimestampOfLatestDataEvent());
writeJsonObjectToResponse(response, request);
}
@Override
public ExecutorService getExecutorService() {
return _executorService;
}
}