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GridDataLoaderProcessor.java
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GridDataLoaderProcessor.java
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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.ignite.internal.processors.dataload;
import org.apache.ignite.*;
import org.apache.ignite.dataload.*;
import org.apache.ignite.internal.*;
import org.apache.ignite.internal.processors.*;
import org.apache.ignite.internal.util.*;
import org.apache.ignite.marshaller.*;
import org.apache.ignite.thread.*;
import org.apache.ignite.internal.managers.communication.*;
import org.apache.ignite.internal.managers.deployment.*;
import org.apache.ignite.internal.util.typedef.*;
import org.apache.ignite.internal.util.typedef.internal.*;
import org.apache.ignite.internal.util.worker.*;
import org.jetbrains.annotations.*;
import java.util.*;
import java.util.concurrent.*;
import static org.apache.ignite.internal.GridTopic.*;
import static org.apache.ignite.internal.managers.communication.GridIoPolicy.*;
/**
*
*/
public class GridDataLoaderProcessor<K, V> extends GridProcessorAdapter {
/** Loaders map (access is not supposed to be highly concurrent). */
private Collection<IgniteDataLoaderImpl> ldrs = new GridConcurrentHashSet<>();
/** Busy lock. */
private final GridSpinBusyLock busyLock = new GridSpinBusyLock();
/** Flushing thread. */
private Thread flusher;
/** */
private final DelayQueue<IgniteDataLoaderImpl<K, V>> flushQ = new DelayQueue<>();
/** Marshaller. */
private final IgniteMarshaller marsh;
/**
* @param ctx Kernal context.
*/
public GridDataLoaderProcessor(GridKernalContext ctx) {
super(ctx);
ctx.io().addMessageListener(TOPIC_DATALOAD, new GridMessageListener() {
@Override public void onMessage(UUID nodeId, Object msg) {
assert msg instanceof GridDataLoadRequest;
processDataLoadRequest(nodeId, (GridDataLoadRequest)msg);
}
});
marsh = ctx.config().getMarshaller();
}
/** {@inheritDoc} */
@Override public void start() throws IgniteCheckedException {
if (ctx.config().isDaemon())
return;
flusher = new IgniteThread(new GridWorker(ctx.gridName(), "grid-data-loader-flusher", log) {
@Override protected void body() throws InterruptedException, IgniteInterruptedCheckedException {
while (!isCancelled()) {
IgniteDataLoaderImpl<K, V> ldr = flushQ.take();
if (!busyLock.enterBusy())
return;
try {
if (ldr.isClosed())
continue;
ldr.tryFlush();
flushQ.offer(ldr);
}
finally {
busyLock.leaveBusy();
}
}
}
});
flusher.start();
if (log.isDebugEnabled())
log.debug("Started data loader processor.");
}
/** {@inheritDoc} */
@Override public void onKernalStop(boolean cancel) {
if (ctx.config().isDaemon())
return;
ctx.io().removeMessageListener(TOPIC_DATALOAD);
busyLock.block();
U.interrupt(flusher);
U.join(flusher, log);
for (IgniteDataLoaderImpl<?, ?> ldr : ldrs) {
if (log.isDebugEnabled())
log.debug("Closing active data loader on grid stop [ldr=" + ldr + ", cancel=" + cancel + ']');
try {
ldr.closeEx(cancel);
}
catch (IgniteInterruptedCheckedException e) {
U.warn(log, "Interrupted while waiting for completion of the data loader: " + ldr, e);
}
catch (IgniteCheckedException e) {
U.error(log, "Failed to close data loader: " + ldr, e);
}
}
if (log.isDebugEnabled())
log.debug("Stopped data loader processor.");
}
/**
* @param cacheName Cache name ({@code null} for default cache).
* @param compact {@code true} if data loader should transfer data in compact format.
* @return Data loader.
*/
public IgniteDataLoaderImpl<K, V> dataLoader(@Nullable String cacheName, boolean compact) {
if (!busyLock.enterBusy())
throw new IllegalStateException("Failed to create data loader (grid is stopping).");
try {
final IgniteDataLoaderImpl<K, V> ldr = new IgniteDataLoaderImpl<>(ctx, cacheName, flushQ, compact);
ldrs.add(ldr);
ldr.internalFuture().listenAsync(new CI1<IgniteInternalFuture<?>>() {
@Override public void apply(IgniteInternalFuture<?> f) {
boolean b = ldrs.remove(ldr);
assert b : "Loader has not been added to set: " + ldr;
if (log.isDebugEnabled())
log.debug("Loader has been completed: " + ldr);
}
});
return ldr;
}
finally {
busyLock.leaveBusy();
}
}
/**
* @param cacheName Cache name ({@code null} for default cache).
* @return Data loader.
*/
public IgniteDataLoader<K, V> dataLoader(@Nullable String cacheName) {
return dataLoader(cacheName, true);
}
/**
* @param nodeId Sender ID.
* @param req Request.
*/
private void processDataLoadRequest(UUID nodeId, GridDataLoadRequest req) {
if (!busyLock.enterBusy()) {
if (log.isDebugEnabled())
log.debug("Ignoring data load request (node is stopping): " + req);
return;
}
try {
if (log.isDebugEnabled())
log.debug("Processing data load request: " + req);
Object topic;
try {
topic = marsh.unmarshal(req.responseTopicBytes(), null);
}
catch (IgniteCheckedException e) {
U.error(log, "Failed to unmarshal topic from request: " + req, e);
return;
}
ClassLoader clsLdr;
if (req.forceLocalDeployment())
clsLdr = U.gridClassLoader();
else {
GridDeployment dep = ctx.deploy().getGlobalDeployment(
req.deploymentMode(),
req.sampleClassName(),
req.sampleClassName(),
req.userVersion(),
nodeId,
req.classLoaderId(),
req.participants(),
null);
if (dep == null) {
sendResponse(nodeId,
topic,
req.requestId(),
new IgniteCheckedException("Failed to get deployment for request [sndId=" + nodeId +
", req=" + req + ']'),
false);
return;
}
clsLdr = dep.classLoader();
}
Collection<Map.Entry<K, V>> col;
IgniteDataLoadCacheUpdater<K, V> updater;
try {
col = marsh.unmarshal(req.collectionBytes(), clsLdr);
updater = marsh.unmarshal(req.updaterBytes(), clsLdr);
}
catch (IgniteCheckedException e) {
U.error(log, "Failed to unmarshal message [nodeId=" + nodeId + ", req=" + req + ']', e);
sendResponse(nodeId, topic, req.requestId(), e, false);
return;
}
GridDataLoadUpdateJob<K, V> job = new GridDataLoadUpdateJob<>(ctx,
log,
req.cacheName(),
col,
req.ignoreDeploymentOwnership(),
req.skipStore(),
updater);
Exception err = null;
try {
job.call();
}
catch (Exception e) {
U.error(log, "Failed to finish update job.", e);
err = e;
}
sendResponse(nodeId, topic, req.requestId(), err, req.forceLocalDeployment());
}
finally {
busyLock.leaveBusy();
}
}
/**
* @param nodeId Node ID.
* @param resTopic Response topic.
* @param reqId Request ID.
* @param err Error.
* @param forceLocDep Force local deployment.
*/
private void sendResponse(UUID nodeId, Object resTopic, long reqId, @Nullable Throwable err,
boolean forceLocDep) {
byte[] errBytes;
try {
errBytes = err != null ? marsh.marshal(err) : null;
}
catch (IgniteCheckedException e) {
U.error(log, "Failed to marshal message.", e);
return;
}
GridDataLoadResponse res = new GridDataLoadResponse(reqId, errBytes, forceLocDep);
try {
ctx.io().send(nodeId, resTopic, res, PUBLIC_POOL);
}
catch (IgniteCheckedException e) {
if (ctx.discovery().alive(nodeId))
U.error(log, "Failed to respond to node [nodeId=" + nodeId + ", res=" + res + ']', e);
else if (log.isDebugEnabled())
log.debug("Node has left the grid: " + nodeId);
}
}
/** {@inheritDoc} */
@Override public void printMemoryStats() {
X.println(">>>");
X.println(">>> Data loader processor memory stats [grid=" + ctx.gridName() + ']');
X.println(">>> ldrsSize: " + ldrs.size());
}
}