Extract metrics package from gerrit-server top-level directory
Change-Id: I7c21b82de289ebc24b530d6b37abf6c33b4dec2f
This commit is contained in:
David Ostrovsky
committed by
Dave Borowitz
Dave Borowitz
parent
bd3f50e61b
commit
1f78f3efa1
16
javatests/com/google/gerrit/metrics/proc/BUILD
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16
javatests/com/google/gerrit/metrics/proc/BUILD
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load("//tools/bzl:junit.bzl", "junit_tests")
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junit_tests(
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name = "proc_tests",
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size = "small",
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srcs = glob(["**/*.java"]),
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deps = [
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"//java/com/google/gerrit/common:server",
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"//java/com/google/gerrit/lifecycle",
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"//java/com/google/gerrit/metrics",
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"//java/com/google/gerrit/metrics/dropwizard",
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"//lib:truth",
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"//lib/dropwizard:dropwizard-core",
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"//lib/guice",
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],
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)
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@@ -0,0 +1,188 @@
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// Copyright (C) 2015 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.metrics.proc;
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import static com.google.common.truth.Truth.assertThat;
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import com.codahale.metrics.Counter;
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import com.codahale.metrics.Gauge;
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import com.codahale.metrics.Metric;
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import com.codahale.metrics.MetricRegistry;
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import com.google.gerrit.common.Version;
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import com.google.gerrit.lifecycle.LifecycleManager;
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import com.google.gerrit.metrics.CallbackMetric0;
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import com.google.gerrit.metrics.Counter0;
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import com.google.gerrit.metrics.Counter1;
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import com.google.gerrit.metrics.Description;
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import com.google.gerrit.metrics.Description.FieldOrdering;
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import com.google.gerrit.metrics.Field;
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import com.google.gerrit.metrics.MetricMaker;
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import com.google.gerrit.metrics.dropwizard.DropWizardMetricMaker;
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import com.google.inject.Guice;
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import com.google.inject.Inject;
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import com.google.inject.Injector;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import org.junit.Before;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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public class ProcMetricModuleTest {
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@Rule public ExpectedException exception = ExpectedException.none();
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@Inject MetricMaker metrics;
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@Inject MetricRegistry registry;
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@Test
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public void constantBuildLabel() {
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Gauge<String> buildLabel = gauge("build/label");
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assertThat(buildLabel.getValue()).isEqualTo(Version.getVersion());
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}
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@Test
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public void procUptime() {
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Gauge<Long> birth = gauge("proc/birth_timestamp");
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assertThat(birth.getValue())
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.isAtMost(TimeUnit.MILLISECONDS.toMicros(System.currentTimeMillis()));
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Gauge<Long> uptime = gauge("proc/uptime");
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assertThat(uptime.getValue()).isAtLeast(1L);
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}
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@Test
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public void counter0() {
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Counter0 cntr =
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metrics.newCounter("test/count", new Description("simple test").setCumulative());
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Counter raw = get("test/count", Counter.class);
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assertThat(raw.getCount()).isEqualTo(0);
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cntr.increment();
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assertThat(raw.getCount()).isEqualTo(1);
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cntr.incrementBy(5);
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assertThat(raw.getCount()).isEqualTo(6);
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}
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@Test
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public void counter1() {
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Counter1<String> cntr =
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metrics.newCounter(
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"test/count", new Description("simple test").setCumulative(), Field.ofString("action"));
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Counter total = get("test/count_total", Counter.class);
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assertThat(total.getCount()).isEqualTo(0);
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cntr.increment("passed");
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Counter passed = get("test/count/passed", Counter.class);
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assertThat(total.getCount()).isEqualTo(1);
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assertThat(passed.getCount()).isEqualTo(1);
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cntr.incrementBy("failed", 5);
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Counter failed = get("test/count/failed", Counter.class);
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assertThat(total.getCount()).isEqualTo(6);
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assertThat(passed.getCount()).isEqualTo(1);
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assertThat(failed.getCount()).isEqualTo(5);
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}
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@Test
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public void counterPrefixFields() {
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Counter1<String> cntr =
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metrics.newCounter(
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"test/count",
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new Description("simple test")
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.setCumulative()
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.setFieldOrdering(FieldOrdering.PREFIX_FIELDS_BASENAME),
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Field.ofString("action"));
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Counter total = get("test/count_total", Counter.class);
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assertThat(total.getCount()).isEqualTo(0);
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cntr.increment("passed");
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Counter passed = get("test/passed/count", Counter.class);
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assertThat(total.getCount()).isEqualTo(1);
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assertThat(passed.getCount()).isEqualTo(1);
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cntr.incrementBy("failed", 5);
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Counter failed = get("test/failed/count", Counter.class);
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assertThat(total.getCount()).isEqualTo(6);
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assertThat(passed.getCount()).isEqualTo(1);
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assertThat(failed.getCount()).isEqualTo(5);
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}
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@Test
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public void callbackMetric0() {
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CallbackMetric0<Long> cntr =
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metrics.newCallbackMetric(
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"test/count", Long.class, new Description("simple test").setCumulative());
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AtomicInteger invocations = new AtomicInteger(0);
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metrics.newTrigger(
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cntr,
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() -> {
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invocations.getAndIncrement();
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cntr.set(42L);
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});
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// Triggers run immediately with DropWizard binding.
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assertThat(invocations.get()).isEqualTo(1);
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Gauge<Long> raw = gauge("test/count");
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assertThat(raw.getValue()).isEqualTo(42);
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// Triggers are debounced to avoid being fired too frequently.
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assertThat(invocations.get()).isEqualTo(1);
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}
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@Test
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public void invalidName1() {
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exception.expect(IllegalArgumentException.class);
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metrics.newCounter("invalid name", new Description("fail"));
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}
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@Test
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public void invalidName2() {
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exception.expect(IllegalArgumentException.class);
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metrics.newCounter("invalid/ name", new Description("fail"));
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}
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@SuppressWarnings({"unchecked", "cast"})
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private <V> Gauge<V> gauge(String name) {
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return (Gauge<V>) get(name, Gauge.class);
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}
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private <M extends Metric> M get(String name, Class<M> type) {
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Metric m = registry.getMetrics().get(name);
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assertThat(m).named(name).isNotNull();
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assertThat(m).named(name).isInstanceOf(type);
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@SuppressWarnings("unchecked")
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M result = (M) m;
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return result;
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}
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@Before
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public void setup() {
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Injector injector = Guice.createInjector(new DropWizardMetricMaker.ApiModule());
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LifecycleManager mgr = new LifecycleManager();
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mgr.add(injector);
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mgr.start();
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injector.injectMembers(this);
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}
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}
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