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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.documentapi.metrics;
import com.yahoo.metrics.simple.Counter;
import com.yahoo.metrics.simple.Gauge;
import com.yahoo.metrics.simple.MetricReceiver;
import com.yahoo.metrics.simple.Point;
import java.time.Duration;
import java.time.Instant;
import java.util.HashMap;
import java.util.Map;
/**
* This class reports metrics for feed operations by APIs that use documentapi.
*
* @author freva
*/
public class DocumentApiMetrics {
private final Counter feeds;
private final Gauge feedLatency;
private final Counter feedRequests;
private final Map<DocumentOperationStatus, Map<DocumentOperationType, Point>> points = new HashMap<>();
private final Map<String, Point> versionPointCache = new HashMap<>();
public DocumentApiMetrics(MetricReceiver metricReceiver, String apiName) {
Map<String, String> dimensions = new HashMap<>();
dimensions.put("api", apiName);
for (DocumentOperationStatus status : DocumentOperationStatus.values()) {
points.put(status, new HashMap<>());
dimensions.put("status", status.name());
for (DocumentOperationType operation : DocumentOperationType.values()) {
dimensions.put("operation", operation.name());
points.get(status).put(operation, new Point(dimensions));
}
}
feeds = metricReceiver.declareCounter("feed.operations");
feedLatency = metricReceiver.declareGauge("feed.latency");
feedRequests = metricReceiver.declareCounter("feed.http-requests");
}
public void reportSuccessful(DocumentOperationType documentOperationType, double latencyInSeconds) {
Point point = points.get(DocumentOperationStatus.OK).get(documentOperationType);
feedLatency.sample(latencyInSeconds, point);
feeds.add(point);
}
public void reportSuccessful(DocumentOperationType documentOperationType, Instant startTime) {
double latency = Duration.between(startTime, Instant.now()).toMillis() / 1000.0d;
reportSuccessful(documentOperationType, latency);
}
public void reportFailure(DocumentOperationType documentOperationType, DocumentOperationStatus documentOperationStatus) {
Point point = points.get(documentOperationStatus).get(documentOperationType);
feeds.add(point);
}
public void reportHttpRequest(String clientVersion) {
if (clientVersion != null) {
feedRequests.add(versionPointCache.computeIfAbsent(clientVersion, v -> new Point(Map.of("client-version", v))));
} else {
feedRequests.add();
}
}
}
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