| /* |
| * 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.htrace; |
| |
| import org.apache.htrace.HTraceConfiguration; |
| import org.apache.htrace.Span; |
| import org.apache.htrace.SpanReceiver; |
| import org.apache.htrace.TraceTree; |
| import org.apache.htrace.TraceTree.SpansByParent; |
| import org.apache.htrace.impl.LocalFileSpanReceiver; |
| import org.apache.htrace.impl.POJOSpanReceiver; |
| import org.apache.htrace.impl.StandardOutSpanReceiver; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.File; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| |
| public class TestHTrace { |
| |
| public static final String SPAN_FILE_FLAG = "spanFile"; |
| |
| /** |
| * Basic system test of HTrace. |
| * |
| * @throws Exception |
| */ |
| @Test |
| public void testHtrace() throws Exception { |
| final int numTraces = 3; |
| String fileName = System.getProperty(SPAN_FILE_FLAG); |
| |
| Collection<SpanReceiver> rcvrs = new HashSet<SpanReceiver>(); |
| |
| // writes spans to a file if one is provided to maven with |
| // -DspanFile="FILENAME", otherwise writes to standard out. |
| if (fileName != null) { |
| File f = new File(fileName); |
| File parent = f.getParentFile(); |
| if (parent != null && !parent.exists() && !parent.mkdirs()) { |
| throw new IllegalArgumentException("Couldn't create file: " |
| + fileName); |
| } |
| HashMap<String, String> conf = new HashMap<String, String>(); |
| conf.put("local-file-span-receiver.path", fileName); |
| LocalFileSpanReceiver receiver = |
| new LocalFileSpanReceiver(HTraceConfiguration.fromMap(conf)); |
| rcvrs.add(receiver); |
| } else { |
| rcvrs.add(new StandardOutSpanReceiver(HTraceConfiguration.EMPTY)); |
| } |
| |
| POJOSpanReceiver psr = new POJOSpanReceiver(HTraceConfiguration.EMPTY); |
| rcvrs.add(psr); |
| runTraceCreatorTraces(new TraceCreator(rcvrs)); |
| |
| for (SpanReceiver receiver : rcvrs) { |
| receiver.close(); |
| } |
| |
| Collection<Span> spans = psr.getSpans(); |
| TraceTree traceTree = new TraceTree(spans); |
| Collection<Span> roots = traceTree.getSpansByParent().find(0); |
| Assert.assertTrue("Trace tree must have roots", !roots.isEmpty()); |
| Assert.assertEquals(numTraces, roots.size()); |
| |
| Map<String, Span> descriptionToRootSpan = new HashMap<String, Span>(); |
| for (Span root : roots) { |
| descriptionToRootSpan.put(root.getDescription(), root); |
| } |
| |
| Assert.assertTrue(descriptionToRootSpan.keySet().contains( |
| TraceCreator.RPC_TRACE_ROOT)); |
| Assert.assertTrue(descriptionToRootSpan.keySet().contains( |
| TraceCreator.SIMPLE_TRACE_ROOT)); |
| Assert.assertTrue(descriptionToRootSpan.keySet().contains( |
| TraceCreator.THREADED_TRACE_ROOT)); |
| |
| SpansByParent spansByParentId = traceTree.getSpansByParent(); |
| Span rpcTraceRoot = descriptionToRootSpan.get(TraceCreator.RPC_TRACE_ROOT); |
| Assert.assertEquals(1, spansByParentId.find(rpcTraceRoot.getSpanId()).size()); |
| |
| Span rpcTraceChild1 = spansByParentId.find(rpcTraceRoot.getSpanId()) |
| .iterator().next(); |
| Assert.assertEquals(1, spansByParentId.find(rpcTraceChild1.getSpanId()).size()); |
| |
| Span rpcTraceChild2 = spansByParentId.find(rpcTraceChild1.getSpanId()) |
| .iterator().next(); |
| Assert.assertEquals(1, spansByParentId.find(rpcTraceChild2.getSpanId()).size()); |
| |
| Span rpcTraceChild3 = spansByParentId.find(rpcTraceChild2.getSpanId()) |
| .iterator().next(); |
| Assert.assertEquals(0, spansByParentId.find(rpcTraceChild3.getSpanId()).size()); |
| } |
| |
| private void runTraceCreatorTraces(TraceCreator tc) { |
| tc.createThreadedTrace(); |
| tc.createSimpleTrace(); |
| tc.createSampleRpcTrace(); |
| } |
| } |