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/*
* 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.bookkeeper.proto;
import com.google.common.annotations.VisibleForTesting;
import io.netty.buffer.ByteBuf;
import io.netty.util.Recycler;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import org.apache.bookkeeper.bookie.BookieException;
import org.apache.bookkeeper.bookie.BookieException.OperationRejectedException;
import org.apache.bookkeeper.net.BookieId;
import org.apache.bookkeeper.proto.BookieProtocol.ParsedAddRequest;
import org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.WriteCallback;
import org.apache.bookkeeper.util.MathUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Processes add entry requests.
*/
class WriteEntryProcessor extends PacketProcessorBase implements WriteCallback {
private static final Logger LOG = LoggerFactory.getLogger(WriteEntryProcessor.class);
long startTimeNanos;
@Override
protected void reset() {
super.reset();
startTimeNanos = -1L;
}
public static WriteEntryProcessor create(ParsedAddRequest request, BookieRequestHandler requestHandler,
BookieRequestProcessor requestProcessor) {
WriteEntryProcessor wep = RECYCLER.get();
wep.init(request, requestHandler, requestProcessor);
requestProcessor.onAddRequestStart(requestHandler.ctx().channel());
return wep;
}
@Override
protected void processPacket() {
if (requestProcessor.getBookie().isReadOnly()
&& !(request.isHighPriority() && requestProcessor.getBookie().isAvailableForHighPriorityWrites())) {
LOG.warn("BookieServer is running in readonly mode,"
+ " so rejecting the request from the client!");
sendWriteReqResponse(BookieProtocol.EREADONLY,
ResponseBuilder.buildErrorResponse(BookieProtocol.EREADONLY, request),
requestProcessor.getRequestStats().getAddRequestStats());
request.release();
request.recycle();
recycle();
return;
}
startTimeNanos = MathUtils.nowInNano();
int rc = BookieProtocol.EOK;
ByteBuf addData = request.getData();
try {
if (request.isRecoveryAdd()) {
requestProcessor.getBookie().recoveryAddEntry(addData, this, requestHandler, request.getMasterKey());
} else {
requestProcessor.getBookie().addEntry(addData, false, this,
requestHandler, request.getMasterKey());
}
} catch (OperationRejectedException e) {
requestProcessor.getRequestStats().getAddEntryRejectedCounter().inc();
// Avoid to log each occurrence of this exception as this can happen when the ledger storage is
// unable to keep up with the write rate.
if (LOG.isDebugEnabled()) {
LOG.debug("Operation rejected while writing {}", request, e);
}
rc = BookieProtocol.ETOOMANYREQUESTS;
} catch (IOException e) {
LOG.error("Error writing {}", request, e);
rc = BookieProtocol.EIO;
} catch (BookieException.LedgerFencedException lfe) {
LOG.warn("Write attempt on fenced ledger {} by client {}", request.getLedgerId(),
requestHandler.ctx().channel().remoteAddress());
rc = BookieProtocol.EFENCED;
} catch (BookieException e) {
LOG.error("Unauthorized access to ledger {}", request.getLedgerId(), e);
rc = BookieProtocol.EUA;
} catch (Throwable t) {
LOG.error("Unexpected exception while writing {}@{} : {}",
request.ledgerId, request.entryId, t.getMessage(), t);
// some bad request which cause unexpected exception
rc = BookieProtocol.EBADREQ;
}
if (rc != BookieProtocol.EOK) {
requestProcessor.getRequestStats().getAddEntryStats()
.registerFailedEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
sendWriteReqResponse(rc,
ResponseBuilder.buildErrorResponse(rc, request),
requestProcessor.getRequestStats().getAddRequestStats());
request.recycle();
recycle();
}
}
@Override
public void writeComplete(int rc, long ledgerId, long entryId,
BookieId addr, Object ctx) {
if (BookieProtocol.EOK == rc) {
requestProcessor.getRequestStats().getAddEntryStats()
.registerSuccessfulEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
} else {
requestProcessor.getRequestStats().getAddEntryStats()
.registerFailedEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
}
requestHandler.prepareSendResponseV2(rc, request);
requestProcessor.onAddRequestFinish();
request.recycle();
recycle();
}
@Override
public String toString() {
return String.format("WriteEntry(%d, %d)",
request.getLedgerId(), request.getEntryId());
}
@VisibleForTesting
void recycle() {
reset();
recyclerHandle.recycle(this);
}
private final Recycler.Handle recyclerHandle;
private WriteEntryProcessor(Recycler.Handle recyclerHandle) {
this.recyclerHandle = recyclerHandle;
}
private static final Recycler RECYCLER = new Recycler() {
@Override
protected WriteEntryProcessor newObject(Recycler.Handle handle) {
return new WriteEntryProcessor(handle);
}
};
}
