/
InMemorySpanExporter.java
114 lines (99 loc) · 4.22 KB
/
InMemorySpanExporter.java
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/*
* Copyright (c) 2022-2023 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* 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 org.eclipse.microprofile.telemetry.tracing.tck.exporter;
import static java.util.Comparator.comparingLong;
import static java.util.concurrent.TimeUnit.SECONDS;
import static java.util.function.Predicate.not;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.stream.Collectors;
import org.awaitility.Awaitility;
import org.testng.Assert;
import io.opentelemetry.api.trace.SpanKind;
import io.opentelemetry.sdk.common.CompletableResultCode;
import io.opentelemetry.sdk.trace.data.SpanData;
import io.opentelemetry.sdk.trace.export.SpanExporter;
import io.opentelemetry.semconv.trace.attributes.SemanticAttributes;
import jakarta.enterprise.context.ApplicationScoped;
@ApplicationScoped
public class InMemorySpanExporter implements SpanExporter {
private boolean isStopped = false;
private final List<SpanData> finishedSpanItems = new CopyOnWriteArrayList<>();
/**
* Careful when retrieving the list of finished spans. There is a chance when the response is already sent to the
* client and the server still writing the end of the spans. This means that a response is available to assert from
* the test side but not all spans may be available yet. For this reason, this method requires the number of
* expected spans.
*/
public List<SpanData> getFinishedSpanItems(int spanCount) {
assertSpanCount(spanCount);
return finishedSpanItems.stream().sorted(comparingLong(SpanData::getStartEpochNanos).reversed())
.collect(Collectors.toList());
}
public void assertSpanCount(int spanCount) {
Awaitility.await().pollDelay(3, SECONDS).atMost(10, SECONDS)
.untilAsserted(() -> Assert.assertEquals(finishedSpanItems.size(), spanCount));
}
public void reset() {
finishedSpanItems.clear();
}
@Override
public CompletableResultCode export(Collection<SpanData> spans) {
if (isStopped) {
return CompletableResultCode.ofFailure();
}
spans.stream()
.filter(not(InMemorySpanExporter::isArquillianSpan))
.forEach(finishedSpanItems::add);
return CompletableResultCode.ofSuccess();
}
private static boolean isArquillianSpan(SpanData span) {
String path = span.getAttributes().get(SemanticAttributes.HTTP_ROUTE);
if (path == null) {
path = span.getAttributes().get(SemanticAttributes.HTTP_TARGET);
}
if (path != null
&& (path.contains("/ArquillianServletRunner")
|| path.contains("/ArquillianRESTRunnerEE9")
|| path.contains("/ArquillianServletRunnerEE9"))) {
return true;
} else {
return false;
}
}
@Override
public CompletableResultCode flush() {
return CompletableResultCode.ofSuccess();
}
@Override
public CompletableResultCode shutdown() {
finishedSpanItems.clear();
isStopped = true;
return CompletableResultCode.ofSuccess();
}
public SpanData getFirst(SpanKind spanKind) {
return finishedSpanItems.stream().filter(span -> span.getKind() == spanKind).findFirst()
.orElseThrow(() -> new IllegalStateException("No span found with kind " + spanKind));
}
public List<SpanData> getSpansWithKind(SpanKind spanKind) {
return finishedSpanItems.stream().filter(span -> span.getKind() == spanKind).collect(Collectors.toList());
}
}