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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.vespa.http.server;
import com.yahoo.documentapi.messagebus.protocol.DocumentProtocol;
import com.yahoo.documentapi.messagebus.protocol.UpdateDocumentMessage;
import com.yahoo.documentapi.messagebus.protocol.UpdateDocumentReply;
import com.yahoo.documentapi.metrics.DocumentApiMetrics;
import com.yahoo.documentapi.metrics.DocumentOperationStatus;
import com.yahoo.documentapi.metrics.DocumentOperationType;
import com.yahoo.jdisc.Metric;
import com.yahoo.messagebus.Reply;
import com.yahoo.messagebus.ReplyHandler;
import com.yahoo.messagebus.Trace;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Catch message bus replies and make the available to a given session.
*
* @author Steinar Knutsen
*/
public class FeedReplyReader implements ReplyHandler {
private static final Logger log = Logger.getLogger(FeedReplyReader.class.getName());
private final Metric metric;
private final DocumentApiMetrics metricsHelper;
private final Metric.Context testAndSetMetricCtx;
public FeedReplyReader(Metric metric, DocumentApiMetrics metricsHelper) {
this.metric = metric;
this.metricsHelper = metricsHelper;
this.testAndSetMetricCtx = metric.createContext(Map.of("operationType", "testAndSet"));
}
@Override
public void handleReply(Reply reply) {
Object o = reply.getContext();
if (!(o instanceof ReplyContext)) {
return;
}
ReplyContext context = (ReplyContext) o;
final double latencyInSeconds = (System.currentTimeMillis() - context.creationTime) / 1000.0d;
metric.set(MetricNames.LATENCY, latencyInSeconds, null);
DocumentOperationType type = DocumentOperationType.fromMessage(reply.getMessage());
boolean conditionMet = conditionMet(reply);
if (reply.hasErrors() && conditionMet) {
DocumentOperationStatus status = DocumentOperationStatus.fromMessageBusErrorCodes(reply.getErrorCodes());
metricsHelper.reportFailure(type, status);
metric.add(MetricNames.FAILED, 1, null);
enqueue(context, reply.getError(0).getMessage(), ErrorCode.fromBusError(reply.getError(0)), false, reply.getTrace());
} else {
metricsHelper.reportSuccessful(type, latencyInSeconds);
if ( ! conditionMet)
metric.add(MetricNames.CONDITION_NOT_MET, 1, testAndSetMetricCtx);
else if ( ! updateNotFound(reply))
metric.add(MetricNames.NOT_FOUND, 1, null);
else
metric.add(MetricNames.SUCCEEDED, 1, null);
enqueue(context, "Document processed.", ErrorCode.OK, !conditionMet, reply.getTrace());
}
}
private static boolean conditionMet(Reply reply) {
return ! reply.hasErrors() || reply.getError(0).getCode() != DocumentProtocol.ERROR_TEST_AND_SET_CONDITION_FAILED;
}
private static boolean updateNotFound(Reply reply) {
return reply instanceof UpdateDocumentReply
&& ! ((UpdateDocumentReply) reply).wasFound()
&& reply.getMessage() instanceof UpdateDocumentMessage
&& ((UpdateDocumentMessage) reply.getMessage()).getDocumentUpdate() != null
&& ! ((UpdateDocumentMessage) reply.getMessage()).getDocumentUpdate().getCreateIfNonExistent();
}
private void enqueue(ReplyContext context, String message, ErrorCode status, boolean isConditionNotMet, Trace trace) {
try {
String traceMessage = (trace != null && trace.getLevel() > 0) ? trace.toString() : "";
context.feedReplies.put(new OperationStatus(message, context.docId, status, isConditionNotMet, traceMessage));
} catch (InterruptedException e) {
log.log(Level.WARNING,
"Interrupted while enqueueing result from putting document with id: " + context.docId);
Thread.currentThread().interrupt();
}
}
}
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