| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.hadoop.tracing; |
| |
| import com.google.common.base.Supplier; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.apache.htrace.core.Span; |
| import org.apache.htrace.core.SpanId; |
| import org.apache.htrace.core.SpanReceiver; |
| import org.apache.htrace.core.HTraceConfiguration; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.TimeoutException; |
| import org.junit.Assert; |
| |
| /** |
| * Span receiver that puts all spans into a single set. |
| * This is useful for testing. |
| * <p/> |
| * We're not using HTrace's POJOReceiver here so as that doesn't |
| * push all the metrics to a static place, and would make testing |
| * SpanReceiverHost harder. |
| */ |
| public class SetSpanReceiver extends SpanReceiver { |
| |
| public SetSpanReceiver(HTraceConfiguration conf) { |
| } |
| |
| public void receiveSpan(Span span) { |
| SetHolder.spans.put(span.getSpanId(), span); |
| } |
| |
| public void close() { |
| } |
| |
| public static void clear() { |
| SetHolder.spans.clear(); |
| } |
| |
| public static int size() { |
| return SetHolder.spans.size(); |
| } |
| |
| public static Collection<Span> getSpans() { |
| return SetHolder.spans.values(); |
| } |
| |
| public static Map<String, List<Span>> getMap() { |
| return SetHolder.getMap(); |
| } |
| |
| public static class SetHolder { |
| public static ConcurrentHashMap<SpanId, Span> spans = |
| new ConcurrentHashMap<SpanId, Span>(); |
| |
| public static Map<String, List<Span>> getMap() { |
| Map<String, List<Span>> map = new HashMap<String, List<Span>>(); |
| |
| for (Span s : spans.values()) { |
| List<Span> l = map.get(s.getDescription()); |
| if (l == null) { |
| l = new LinkedList<Span>(); |
| map.put(s.getDescription(), l); |
| } |
| l.add(s); |
| } |
| return map; |
| } |
| } |
| |
| public static void assertSpanNamesFound(final String[] expectedSpanNames) { |
| try { |
| GenericTestUtils.waitFor(new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| Map<String, List<Span>> map = SetSpanReceiver.SetHolder.getMap(); |
| for (String spanName : expectedSpanNames) { |
| if (!map.containsKey(spanName)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| }, 100, 1000); |
| } catch (TimeoutException e) { |
| Assert.fail("timed out to get expected spans: " + e.getMessage()); |
| } catch (InterruptedException e) { |
| Assert.fail("interrupted while waiting spans: " + e.getMessage()); |
| } |
| } |
| } |