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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.storage.searcher;
import com.yahoo.cloud.config.ClusterListConfig;
import com.yahoo.cloud.config.SlobroksConfig;
import com.yahoo.document.config.DocumentmanagerConfig;
import com.yahoo.vespa.config.content.LoadTypeConfig;
import com.yahoo.component.ComponentId;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.documentapi.*;
import com.yahoo.documentapi.messagebus.protocol.DocumentProtocol;
import com.yahoo.feedapi.FeedContext;
import com.yahoo.feedapi.MessagePropertyProcessor;
import com.yahoo.jdisc.Metric;
import com.yahoo.messagebus.StaticThrottlePolicy;
import com.yahoo.search.Query;
import com.yahoo.search.Result;
import com.yahoo.search.Searcher;
import com.yahoo.search.rendering.RendererRegistry;
import com.yahoo.search.result.ErrorMessage;
import com.yahoo.search.searchchain.Execution;
import com.yahoo.vdslib.VisitorOrdering;
import com.yahoo.vespaclient.ClusterDef;
import com.yahoo.vespaclient.config.FeederConfig;
/**
* A searcher that allows you to iterate through a storage cluster using visiting.
*
* @deprecated do not use
*/
// TODO: Remove on Vespa 7
@Deprecated // OK
public class VisitSearcher extends Searcher {
public static final String VISITOR_CONTINUATION_TOKEN_FIELDNAME = "visitorContinuationToken";
FeedContext context;
public VisitSearcher(FeederConfig feederConfig,
LoadTypeConfig loadTypeConfig,
DocumentmanagerConfig documentmanagerConfig,
SlobroksConfig slobroksConfig,
ClusterListConfig clusterListConfig,
Metric metric)
throws Exception
{
this(FeedContext.getInstance(feederConfig, loadTypeConfig,
documentmanagerConfig, slobroksConfig,
clusterListConfig, metric));
}
VisitSearcher(FeedContext context) throws Exception {
this.context = context;
}
class HitDataHandler extends DumpVisitorDataHandler {
private final Result result;
private final boolean populateHits;
private final Object monitor = new Object();
HitDataHandler(Result result, boolean populateHits) {
this.result = result;
this.populateHits = populateHits;
}
@Override
public void onDocument(Document document, long l) {
final DocumentHit hit = new DocumentHit(document, 0);
if (populateHits) {
hit.populateHitFields();
}
synchronized (monitor) {
result.hits().add(hit);
}
}
@Override
public void onRemove(DocumentId documentId) {
final DocumentRemoveHit hit = new DocumentRemoveHit(documentId);
synchronized (monitor) {
result.hits().add(hit);
}
}
}
public VisitorParameters getVisitorParameters(Query query, Result result) throws Exception {
String documentSelection = query.properties().getString("visit.selection");
if (documentSelection == null) {
documentSelection = "";
}
VisitorParameters params = new VisitorParameters(documentSelection);
params.setMaxBucketsPerVisitor(query.properties().getInteger("visit.maxBucketsPerVisitor", 1));
params.setMaxPending(query.properties().getInteger("visit.maxPendingMessagesPerVisitor", 32));
params.setMaxFirstPassHits(query.properties().getInteger("visit.approxMaxDocs", 1));
params.setMaxTotalHits(query.properties().getInteger("visit.approxMaxDocs", 1));
params.setThrottlePolicy(new StaticThrottlePolicy().setMaxPendingCount(
query.properties().getInteger("visit.maxPendingVisitors", 1)));
params.setToTimestamp(query.properties().getLong("visit.toTimestamp", 0L));
params.setFromTimestamp(query.properties().getLong("visit.fromTimestamp", 0L));
String pri = query.properties().getString("visit.priority");
if (pri != null) {
params.setPriority(DocumentProtocol.Priority.valueOf(pri));
}
if (query.properties().getBoolean("visit.visitInconsistentBuckets")) {
params.visitInconsistentBuckets(true);
}
String ordering = query.properties().getString("visit.order");
if (!"ascending".equalsIgnoreCase(ordering)) {
params.setVisitorOrdering(VisitorOrdering.ASCENDING);
} else {
params.setVisitorOrdering(VisitorOrdering.DESCENDING);
}
String remoteCluster = query.properties().getString("visit.dataHandler");
if (remoteCluster != null) {
params.setRemoteDataHandler(remoteCluster);
} else {
params.setLocalDataHandler(new HitDataHandler(
result, query.properties().getBoolean("populatehitfields", false)));
}
String fieldSet = query.properties().getString("visit.fieldSet");
if (fieldSet != null) {
params.fieldSet(fieldSet);
}
String continuation = query.properties().getString("visit.continuation");
if (continuation != null) {
params.setResumeToken(ContinuationHit.getToken(continuation));
}
params.setVisitRemoves(query.properties().getBoolean("visit.visitRemoves"));
MessagePropertyProcessor.PropertySetter propertySetter;
propertySetter = context.getPropertyProcessor().buildPropertySetter(query.getHttpRequest());
propertySetter.process(params);
if (context.getClusterList().getStorageClusters().size() == 0) {
throw new IllegalArgumentException("No content clusters have been defined");
}
String route = query.properties().getString("visit.cluster");
ClusterDef found = null;
if (route != null) {
String names = "";
for (ClusterDef c : context.getClusterList().getStorageClusters()) {
if (c.getName().equals(route)) {
found = c;
}
if (!names.isEmpty()) {
names += ", ";
}
names += c.getName();
}
if (found == null) {
throw new IllegalArgumentException("Your vespa cluster contains the storage clusters " + names + ", not " + route + ". Please select a valid vespa cluster.");
}
} else if (context.getClusterList().getStorageClusters().size() == 1) {
found = context.getClusterList().getStorageClusters().get(0);
} else {
throw new IllegalArgumentException("Multiple content clusters are defined, select one using the \"visit.cluster\" option");
}
params.setRoute("[Storage:cluster=" + found.getName() + ";clusterconfigid=" + found.getConfigId() + "]");
return params;
}
@Override
public Result search(Query query, Execution execution) {
Result result = execution.search(query);
VisitorParameters parameters;
try {
parameters = getVisitorParameters(query, result);
} catch (Exception e) {
return new Result(query, ErrorMessage.createBadRequest("Illegal parameters: " + e.toString()));
}
if (parameters != null) {
VisitorSession session = context.getSessionFactory().createVisitorSession(parameters);
try {
if (!session.waitUntilDone(query.getTimeout())) {
return new Result(query, ErrorMessage.createTimeout("Visitor timed out"));
}
ProgressToken token = session.getProgress();
if (!token.isFinished()) {
final ContinuationHit continuation = new ContinuationHit(token);
result.hits().setField(VISITOR_CONTINUATION_TOKEN_FIELDNAME, continuation.getValue());
}
} catch (InterruptedException e) {
} finally {
session.destroy();
}
}
GetSearcher.setOutputFormat(query, result);
query.setHits(result.hits().size());
return result;
}
}
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