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ComponentRegistryTest.java
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ComponentRegistryTest.java
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/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
package io.opentelemetry.sdk.internal;
import static java.util.stream.Collectors.joining;
import static org.assertj.core.api.Assertions.assertThat;
import io.opentelemetry.api.common.Attributes;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.stream.IntStream;
import org.junit.jupiter.api.Test;
class ComponentRegistryTest {
private static final String NAME = "test_name";
private static final String VERSION = "version";
private static final String SCHEMA_URL = "http://schema.com";
private static final Attributes ATTRIBUTES = Attributes.builder().put("k1", "v1").build();
private final ComponentRegistry<TestComponent> registry =
new ComponentRegistry<>(unused -> new TestComponent());
@Test
void get_SameInstance() {
assertThat(registry.get(NAME, null, null, Attributes.empty()))
.isSameAs(registry.get(NAME, null, null, Attributes.empty()))
.isSameAs(registry.get(NAME, null, null, Attributes.builder().put("k1", "v2").build()));
assertThat(registry.get(NAME, VERSION, null, Attributes.empty()))
.isSameAs(registry.get(NAME, VERSION, null, Attributes.empty()))
.isSameAs(registry.get(NAME, VERSION, null, Attributes.builder().put("k1", "v2").build()));
assertThat(registry.get(NAME, null, SCHEMA_URL, Attributes.empty()))
.isSameAs(registry.get(NAME, null, SCHEMA_URL, Attributes.empty()))
.isSameAs(
registry.get(NAME, null, SCHEMA_URL, Attributes.builder().put("k1", "v2").build()));
assertThat(registry.get(NAME, VERSION, SCHEMA_URL, Attributes.empty()))
.isSameAs(registry.get(NAME, VERSION, SCHEMA_URL, Attributes.empty()))
.isSameAs(
registry.get(NAME, VERSION, SCHEMA_URL, Attributes.builder().put("k1", "v2").build()));
}
@Test
void get_DifferentInstance() {
assertThat(registry.get(NAME, VERSION, SCHEMA_URL, ATTRIBUTES))
.isNotSameAs(registry.get(NAME + "_1", VERSION, SCHEMA_URL, ATTRIBUTES))
.isNotSameAs(registry.get(NAME, VERSION + "_1", SCHEMA_URL, ATTRIBUTES))
.isNotSameAs(registry.get(NAME, VERSION, SCHEMA_URL + "_1", ATTRIBUTES));
assertThat(registry.get(NAME, VERSION, null, Attributes.empty()))
.isNotSameAs(registry.get(NAME, null, null, Attributes.empty()));
assertThat(registry.get(NAME, null, SCHEMA_URL, Attributes.empty()))
.isNotSameAs(registry.get(NAME, null, null, Attributes.empty()));
}
@Test
@SuppressWarnings("ReturnValueIgnored")
void getComponents_HighConcurrency() throws ExecutionException, InterruptedException {
List<Future<?>> futures = new ArrayList<>();
Random random = new Random();
int concurrency = 2;
ExecutorService executor = Executors.newFixedThreadPool(concurrency);
try {
for (int i = 0; i < 100; i++) {
futures.add(
executor.submit(
() -> {
String name =
IntStream.range(0, 20)
.mapToObj(unused -> String.valueOf((char) random.nextInt(26)))
.collect(joining());
registry.get(name, null, null, Attributes.empty());
}));
futures.add(
executor.submit(() -> registry.getComponents().forEach(TestComponent::hashCode)));
}
for (Future<?> future : futures) {
future.get();
}
} finally {
executor.shutdown();
}
}
private static final class TestComponent {}
}