1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.documentapi.metrics;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
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.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* 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 Cache<String, Point> versionPointCache = CacheBuilder.newBuilder().maximumSize(256).build();
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 reportFailure(DocumentOperationType documentOperationType, DocumentOperationStatus documentOperationStatus) {
Point point = points.get(documentOperationStatus).get(documentOperationType);
feeds.add(point);
}
public void report(DocumentOperationType type, Instant start, DocumentOperationStatus... status) {
double latency = latency(start);
for (var s : status) {
var point = points.get(s).get(type);
feedLatency.sample(latency, point);
feeds.add(point);
}
}
private static double latency(Instant start) { return Duration.between(start, Instant.now()).toMillis() / 1000d; }
public void reportHttpRequest(String clientVersion) {
if (clientVersion != null) {
try {
Point point = versionPointCache.get(clientVersion, () -> new Point(Map.of("client-version", clientVersion)));
feedRequests.add(point);
} catch (ExecutionException e) { // When Point constructor throws an exception
throw new RuntimeException(e);
}
} else {
feedRequests.add();
}
}
}
|
