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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.docproc.jdisc;
import com.yahoo.component.annotation.Inject;
import com.yahoo.component.chain.Chain;
import com.yahoo.component.chain.model.ChainsModel;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.concurrent.DaemonThreadFactory;
import com.yahoo.config.docproc.DocprocConfig;
import com.yahoo.config.docproc.SchemamappingConfig;
import com.yahoo.container.core.ChainsConfig;
import com.yahoo.container.core.document.ContainerDocumentConfig;
import com.yahoo.docproc.AbstractConcreteDocumentFactory;
import com.yahoo.docproc.CallStack;
import com.yahoo.docproc.impl.DocprocService;
import com.yahoo.docproc.DocumentProcessor;
import com.yahoo.docproc.jdisc.messagebus.MbusRequestContext;
import com.yahoo.docproc.proxy.SchemaMap;
import com.yahoo.document.DocumentTypeManager;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.handler.AbstractRequestHandler;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.messagebus.jdisc.MbusRequest;
import com.yahoo.processing.execution.chain.ChainRegistry;
import java.util.TimerTask;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import java.util.logging.Level;
import static com.yahoo.component.chain.ChainsConfigurer.prepareChainRegistry;
import static com.yahoo.component.chain.model.ChainsModelBuilder.buildFromConfig;
/**
* TODO: Javadoc
*
* @author Einar M R Rosenvinge
*/
public class DocumentProcessingHandler extends AbstractRequestHandler {
private static final Logger log = Logger.getLogger(DocumentProcessingHandler.class.getName());
private final ComponentRegistry<DocprocService> docprocServiceRegistry;
private final ComponentRegistry<AbstractConcreteDocumentFactory> docFactoryRegistry;
private final ChainRegistry<DocumentProcessor> chainRegistry = new ChainRegistry<>();
private final ScheduledThreadPoolExecutor laterExecutor =
new ScheduledThreadPoolExecutor(2, new DaemonThreadFactory("docproc-later-"));
private final ContainerDocumentConfig containerDocConfig;
private final DocumentTypeManager documentTypeManager;
private DocumentProcessingHandler(ComponentRegistry<DocprocService> docprocServiceRegistry,
ComponentRegistry<DocumentProcessor> documentProcessorComponentRegistry,
ComponentRegistry<AbstractConcreteDocumentFactory> docFactoryRegistry,
int numThreads,
DocumentTypeManager documentTypeManager,
ChainsModel chainsModel, SchemaMap schemaMap,
Metric metric,
ContainerDocumentConfig containerDocConfig) {
this.docprocServiceRegistry = docprocServiceRegistry;
this.docFactoryRegistry = docFactoryRegistry;
this.containerDocConfig = containerDocConfig;
this.documentTypeManager = documentTypeManager;
DocprocService.schemaMap = schemaMap;
laterExecutor.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
laterExecutor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
if (chainsModel != null) {
prepareChainRegistry(chainRegistry, chainsModel, documentProcessorComponentRegistry);
for (Chain<DocumentProcessor> chain : chainRegistry.allComponents()) {
log.config("Setting up call stack for chain " + chain.getId());
DocprocService service = new DocprocService(chain.getId(), convertToCallStack(chain, metric), documentTypeManager, computeNumThreads(numThreads));
service.setInService(true);
docprocServiceRegistry.register(service.getId(), service);
}
}
}
private static int computeNumThreads(int maxThreads) {
return (maxThreads > 0) ? maxThreads : Runtime.getRuntime().availableProcessors();
}
DocumentProcessingHandler(ComponentRegistry<DocprocService> docprocServiceRegistry,
ComponentRegistry<DocumentProcessor> documentProcessorComponentRegistry,
ComponentRegistry<AbstractConcreteDocumentFactory> docFactoryRegistry,
DocumentProcessingHandlerParameters params) {
this(docprocServiceRegistry, documentProcessorComponentRegistry, docFactoryRegistry,
params.getMaxNumThreads(),
params.getDocumentTypeManager(), params.getChainsModel(), params.getSchemaMap(),
params.getMetric(),
params.getContainerDocConfig());
}
@Inject
public DocumentProcessingHandler(ComponentRegistry<DocumentProcessor> documentProcessorComponentRegistry,
ComponentRegistry<AbstractConcreteDocumentFactory> docFactoryRegistry,
ChainsConfig chainsConfig,
SchemamappingConfig mappingConfig,
DocumentTypeManager documentTypeManager,
DocprocConfig docprocConfig,
ContainerDocumentConfig containerDocConfig,
Metric metric) {
this(new ComponentRegistry<>(),
documentProcessorComponentRegistry, docFactoryRegistry,
new DocumentProcessingHandlerParameters()
.setMaxNumThreads(docprocConfig.numthreads())
.setDocumentTypeManager(documentTypeManager)
.setChainsModel(buildFromConfig(chainsConfig)).setSchemaMap(configureMapping(mappingConfig))
.setMetric(metric)
.setContainerDocumentConfig(containerDocConfig));
docprocServiceRegistry.freeze();
}
@Override
protected void destroy() {
laterExecutor.shutdown();
docprocServiceRegistry.allComponents().forEach(docprocService -> docprocService.deconstruct());
}
public ComponentRegistry<DocprocService> getDocprocServiceRegistry() {
return docprocServiceRegistry;
}
public ChainRegistry<DocumentProcessor> getChains() {
return chainRegistry;
}
private static SchemaMap configureMapping(SchemamappingConfig mappingConfig) {
SchemaMap map = new SchemaMap();
map.configure(mappingConfig);
return map;
}
private static CallStack convertToCallStack(Chain<DocumentProcessor> chain, Metric metric) {
CallStack stack = new CallStack(chain.getId().stringValue(), metric);
for (DocumentProcessor processor : chain.components()) {
processor.getFieldMap().putAll(DocprocService.schemaMap.chainMap(chain.getId().stringValue(), processor.getId().stringValue()));
stack.addLast(processor);
}
return stack;
}
@Override
public ContentChannel handleRequest(Request request, ResponseHandler handler) {
RequestContext requestContext;
if (request instanceof MbusRequest) {
requestContext = new MbusRequestContext((MbusRequest) request, handler, docprocServiceRegistry, docFactoryRegistry, containerDocConfig);
} else {
//Other types can be added here in the future
throw new IllegalArgumentException("Request type not supported: " + request);
}
if (!requestContext.isProcessable()) {
requestContext.skip();
return null;
}
String serviceName = requestContext.getServiceName();
DocprocService service = docprocServiceRegistry.getComponent(serviceName);
// No need to enqueue a task if the docproc chain is empty, just forward requestContext
if (service == null) {
log.log(Level.SEVERE, "DocprocService for session '" + serviceName +
"' not found, returning request '" + requestContext + "'.");
requestContext.processingFailed(RequestContext.ErrorCode.ERROR_PROCESSING_FAILURE,
"DocprocService " + serviceName + " not found.");
return null;
} else if (service.getExecutor().getCallStack().size() == 0) {
//call stack was empty, just forward message
requestContext.skip();
return null;
}
DocumentProcessingTask task = new DocumentProcessingTask(requestContext, this, service, service.getThreadPoolExecutor());
task.submit();
return null;
}
void submit(DocumentProcessingTask task, long delay) {
LaterTimerTask timerTask = new LaterTimerTask(task, delay);
laterExecutor.schedule(timerTask, delay, TimeUnit.MILLISECONDS);
}
private static class LaterTimerTask extends TimerTask {
private final DocumentProcessingTask processingTask;
private final long delay;
private LaterTimerTask(DocumentProcessingTask processingTask, long delay) {
this.delay = delay;
log.log(Level.FINE, () -> "Enqueueing in " + delay + " ms due to Progress.LATER: " + processingTask);
this.processingTask = processingTask;
}
@Override
public void run() {
log.log(Level.FINE, () -> "Submitting after having waited " + delay + " ms in LATER queue: " + processingTask);
processingTask.submit();
}
}
public DocumentTypeManager getDocumentTypeManager() {
return documentTypeManager;
}
}
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