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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.feedhandler;
import com.google.inject.Inject;
import com.yahoo.clientmetrics.RouteMetricSet;
import com.yahoo.cloud.config.ClusterListConfig;
import com.yahoo.cloud.config.SlobroksConfig;
import com.yahoo.concurrent.ThreadFactoryFactory;
import com.yahoo.container.jdisc.EmptyResponse;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.protect.Error;
import com.yahoo.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.document.DocumentUpdate;
import com.yahoo.document.TestAndSetCondition;
import com.yahoo.document.config.DocumentmanagerConfig;
import com.yahoo.feedapi.DocprocMessageProcessor;
import com.yahoo.feedapi.FeedContext;
import com.yahoo.feedapi.Feeder;
import com.yahoo.feedapi.JsonFeeder;
import com.yahoo.feedapi.MessagePropertyProcessor;
import com.yahoo.feedapi.SimpleFeedAccess;
import com.yahoo.feedapi.SingleSender;
import com.yahoo.feedapi.XMLFeeder;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.config.content.LoadTypeConfig;
import com.yahoo.vespaclient.config.FeederConfig;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Feed documents from a com.yahoo.container.handler.Request.
*
* @author Thomas Gundersen
* @author steinar
*/
public final class VespaFeedHandler extends VespaFeedHandlerBase {
public static final String JSON_INPUT = "jsonInput";
private final AtomicInteger busyThreads = new AtomicInteger(0);
private final int maxBusyThreads;
@SuppressWarnings("unused")
@Inject
public VespaFeedHandler(FeederConfig feederConfig,
LoadTypeConfig loadTypeConfig,
DocumentmanagerConfig documentmanagerConfig,
SlobroksConfig slobroksConfig,
ClusterListConfig clusterListConfig,
Executor executor,
Metric metric) throws Exception {
super(feederConfig, loadTypeConfig, documentmanagerConfig, slobroksConfig, clusterListConfig, executor, metric);
this.maxBusyThreads = feederConfig.maxbusythreads();
}
VespaFeedHandler(FeedContext context, Executor executor) throws Exception {
super(context, executor);
this.maxBusyThreads = 32;
}
public static VespaFeedHandler createFromContext(FeedContext context, Executor executor) throws Exception {
return new VespaFeedHandler(context, executor);
}
@Override
public HttpResponse handle(HttpRequest request) {
return handle(request, null, 1);
}
static final class ThreadedFeedAccess implements SimpleFeedAccess {
private final SimpleFeedAccess simpleFeedAccess;
private final ExecutorService executorService;
private final Executor executor;
ThreadedFeedAccess(int numThreads, SimpleFeedAccess simpleFeedAccess) {
this.simpleFeedAccess = simpleFeedAccess;
if (numThreads <= 0) {
numThreads = Runtime.getRuntime().availableProcessors();
}
if (numThreads > 1) {
executorService = new ThreadPoolExecutor(numThreads, numThreads, 0L, TimeUnit.SECONDS,
new SynchronousQueue<>(false),
ThreadFactoryFactory.getDaemonThreadFactory("feeder"),
new ThreadPoolExecutor.CallerRunsPolicy());
executor = executorService;
} else {
executorService = null;
executor = new Executor() {
@Override
public void execute(Runnable command) {
command.run();
}
};
}
}
@Override
public void put(Document doc) {
executor.execute(() -> simpleFeedAccess.put(doc));
}
@Override
public void remove(DocumentId docId) {
executor.execute(() -> simpleFeedAccess.remove(docId));
}
@Override
public void update(DocumentUpdate update) {
executor.execute(() -> simpleFeedAccess.update(update));
}
@Override
public void put(Document doc, TestAndSetCondition condition) {
executor.execute(() -> simpleFeedAccess.put(doc, condition));
}
@Override
public void remove(DocumentId docId, TestAndSetCondition condition) {
executor.execute(() -> simpleFeedAccess.remove(docId, condition));
}
@Override
public void update(DocumentUpdate update, TestAndSetCondition condition) {
executor.execute(() -> simpleFeedAccess.update(update, condition));
}
@Override
public boolean isAborted() {
return simpleFeedAccess.isAborted();
}
@Override
public void close() {
if (executorService != null) {
executorService.shutdown();
}
}
}
public HttpResponse handle(HttpRequest request, RouteMetricSet.ProgressCallback callback, int numThreads) {
if (request.getProperty("status") != null) {
return new MetricResponse(context.getMetrics().getMetricSet());
}
try {
int busy = busyThreads.incrementAndGet();
if (busy > maxBusyThreads)
return new EmptyResponse(com.yahoo.jdisc.http.HttpResponse.Status.SERVICE_UNAVAILABLE);
boolean asynchronous = request.getBooleanProperty("asynchronous");
MessagePropertyProcessor.PropertySetter properties = getPropertyProcessor().buildPropertySetter(request);
String route = properties.getRoute().toString();
FeedResponse response = new FeedResponse(new RouteMetricSet(route, callback));
SingleSender sender = new SingleSender(response, getSharedSender(route), !asynchronous);
sender.addMessageProcessor(properties);
sender.addMessageProcessor(new DocprocMessageProcessor(getDocprocChain(request), getDocprocServiceRegistry(request)));
ThreadedFeedAccess feedAccess = new ThreadedFeedAccess(numThreads, sender);
Feeder feeder = createFeeder(sender, request);
feeder.setAbortOnDocumentError(properties.getAbortOnDocumentError());
feeder.setCreateIfNonExistent(properties.getCreateIfNonExistent());
response.setAbortOnFeedError(properties.getAbortOnFeedError());
List<String> errors = feeder.parse();
for (String s : errors) {
response.addXMLParseError(s);
}
if (errors.size() > 0 && feeder instanceof XMLFeeder) {
response.addXMLParseError("If you are trying to feed JSON, set the Content-Type header to application/json.");
}
sender.done();
feedAccess.close();
if (asynchronous) {
return response;
}
long millis = getTimeoutMillis(request);
boolean completed = sender.waitForPending(millis);
if (!completed) {
response.addError(Error.TIMEOUT, "Timed out after " + millis + " ms waiting for responses");
}
response.done();
return response;
} finally {
busyThreads.decrementAndGet();
}
}
private Feeder createFeeder(SimpleFeedAccess sender, HttpRequest request) {
String contentType = request.getHeader("Content-Type");
if (Boolean.valueOf(request.getProperty(JSON_INPUT)) || (contentType != null && contentType.startsWith("application/json"))) {
return new JsonFeeder(getDocumentTypeManager(), sender, getRequestInputStream(request));
} else {
return new XMLFeeder(getDocumentTypeManager(), sender, getRequestInputStream(request));
}
}
}
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