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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.metrics.proc;
import static com.google.common.truth.Truth.assertThat;
import com.codahale.metrics.Counter;
import com.codahale.metrics.Gauge;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricRegistry;
import com.google.gerrit.common.Version;
import com.google.gerrit.lifecycle.LifecycleManager;
import com.google.gerrit.metrics.CallbackMetric0;
import com.google.gerrit.metrics.Counter0;
import com.google.gerrit.metrics.Counter1;
import com.google.gerrit.metrics.Description;
import com.google.gerrit.metrics.Description.FieldOrdering;
import com.google.gerrit.metrics.Field;
import com.google.gerrit.metrics.MetricMaker;
import com.google.gerrit.metrics.dropwizard.DropWizardMetricMaker;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
public class ProcMetricModuleTest {
@Rule public ExpectedException exception = ExpectedException.none();
@Inject MetricMaker metrics;
@Inject MetricRegistry registry;
@Test
public void constantBuildLabel() {
Gauge<String> buildLabel = gauge("build/label");
assertThat(buildLabel.getValue()).isEqualTo(Version.getVersion());
}
@Test
public void procUptime() {
Gauge<Long> birth = gauge("proc/birth_timestamp");
assertThat(birth.getValue())
.isAtMost(TimeUnit.MILLISECONDS.toMicros(System.currentTimeMillis()));
Gauge<Long> uptime = gauge("proc/uptime");
assertThat(uptime.getValue()).isAtLeast(1L);
}
@Test
public void counter0() {
Counter0 cntr =
metrics.newCounter("test/count", new Description("simple test").setCumulative());
Counter raw = get("test/count", Counter.class);
assertThat(raw.getCount()).isEqualTo(0);
cntr.increment();
assertThat(raw.getCount()).isEqualTo(1);
cntr.incrementBy(5);
assertThat(raw.getCount()).isEqualTo(6);
}
@Test
public void counter1() {
Counter1<String> cntr =
metrics.newCounter(
"test/count", new Description("simple test").setCumulative(), Field.ofString("action"));
Counter total = get("test/count_total", Counter.class);
assertThat(total.getCount()).isEqualTo(0);
cntr.increment("passed");
Counter passed = get("test/count/passed", Counter.class);
assertThat(total.getCount()).isEqualTo(1);
assertThat(passed.getCount()).isEqualTo(1);
cntr.incrementBy("failed", 5);
Counter failed = get("test/count/failed", Counter.class);
assertThat(total.getCount()).isEqualTo(6);
assertThat(passed.getCount()).isEqualTo(1);
assertThat(failed.getCount()).isEqualTo(5);
}
@Test
public void counterPrefixFields() {
Counter1<String> cntr =
metrics.newCounter(
"test/count",
new Description("simple test")
.setCumulative()
.setFieldOrdering(FieldOrdering.PREFIX_FIELDS_BASENAME),
Field.ofString("action"));
Counter total = get("test/count_total", Counter.class);
assertThat(total.getCount()).isEqualTo(0);
cntr.increment("passed");
Counter passed = get("test/passed/count", Counter.class);
assertThat(total.getCount()).isEqualTo(1);
assertThat(passed.getCount()).isEqualTo(1);
cntr.incrementBy("failed", 5);
Counter failed = get("test/failed/count", Counter.class);
assertThat(total.getCount()).isEqualTo(6);
assertThat(passed.getCount()).isEqualTo(1);
assertThat(failed.getCount()).isEqualTo(5);
}
@Test
public void callbackMetric0() {
CallbackMetric0<Long> cntr =
metrics.newCallbackMetric(
"test/count", Long.class, new Description("simple test").setCumulative());
AtomicInteger invocations = new AtomicInteger(0);
metrics.newTrigger(
cntr,
() -> {
invocations.getAndIncrement();
cntr.set(42L);
});
// Triggers run immediately with DropWizard binding.
assertThat(invocations.get()).isEqualTo(1);
Gauge<Long> raw = gauge("test/count");
assertThat(raw.getValue()).isEqualTo(42);
// Triggers are debounced to avoid being fired too frequently.
assertThat(invocations.get()).isEqualTo(1);
}
@Test
public void invalidName1() {
exception.expect(IllegalArgumentException.class);
metrics.newCounter("invalid name", new Description("fail"));
}
@Test
public void invalidName2() {
exception.expect(IllegalArgumentException.class);
metrics.newCounter("invalid/ name", new Description("fail"));
}
@SuppressWarnings({"unchecked", "cast"})
private <V> Gauge<V> gauge(String name) {
return (Gauge<V>) get(name, Gauge.class);
}
private <M extends Metric> M get(String name, Class<M> type) {
Metric m = registry.getMetrics().get(name);
assertThat(m).named(name).isNotNull();
assertThat(m).named(name).isInstanceOf(type);
@SuppressWarnings("unchecked")
M result = (M) m;
return result;
}
@Before
public void setup() {
Injector injector = Guice.createInjector(new DropWizardMetricMaker.ApiModule());
LifecycleManager mgr = new LifecycleManager();
mgr.add(injector);
mgr.start();
injector.injectMembers(this);
}
}
|
