| /* |
| * Copyright 2018, OpenCensus Authors |
| * |
| * 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 io.opencensus.implcore.trace.export; |
| |
| import io.opencensus.implcore.trace.RecordEventsSpanImpl; |
| import io.opencensus.implcore.trace.internal.ConcurrentIntrusiveList; |
| import io.opencensus.trace.export.RunningSpanStore; |
| import io.opencensus.trace.export.SpanData; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import javax.annotation.concurrent.ThreadSafe; |
| |
| /** In-process implementation of the {@link RunningSpanStore}. */ |
| @ThreadSafe |
| public final class InProcessRunningSpanStoreImpl extends RunningSpanStoreImpl { |
| private final ConcurrentIntrusiveList<RecordEventsSpanImpl> runningSpans; |
| |
| public InProcessRunningSpanStoreImpl() { |
| runningSpans = new ConcurrentIntrusiveList<RecordEventsSpanImpl>(); |
| } |
| |
| @Override |
| public void onStart(RecordEventsSpanImpl span) { |
| runningSpans.addElement(span); |
| } |
| |
| @Override |
| public void onEnd(RecordEventsSpanImpl span) { |
| runningSpans.removeElement(span); |
| } |
| |
| @Override |
| public Summary getSummary() { |
| Collection<RecordEventsSpanImpl> allRunningSpans = runningSpans.getAll(); |
| Map<String, Integer> numSpansPerName = new HashMap<String, Integer>(); |
| for (RecordEventsSpanImpl span : allRunningSpans) { |
| Integer prevValue = numSpansPerName.get(span.getName()); |
| numSpansPerName.put(span.getName(), prevValue != null ? prevValue + 1 : 1); |
| } |
| Map<String, PerSpanNameSummary> perSpanNameSummary = new HashMap<String, PerSpanNameSummary>(); |
| for (Map.Entry<String, Integer> it : numSpansPerName.entrySet()) { |
| perSpanNameSummary.put(it.getKey(), PerSpanNameSummary.create(it.getValue())); |
| } |
| Summary summary = Summary.create(perSpanNameSummary); |
| return summary; |
| } |
| |
| @Override |
| public Collection<SpanData> getRunningSpans(Filter filter) { |
| Collection<RecordEventsSpanImpl> allRunningSpans = runningSpans.getAll(); |
| int maxSpansToReturn = |
| filter.getMaxSpansToReturn() == 0 ? allRunningSpans.size() : filter.getMaxSpansToReturn(); |
| List<SpanData> ret = new ArrayList<SpanData>(maxSpansToReturn); |
| for (RecordEventsSpanImpl span : allRunningSpans) { |
| if (ret.size() == maxSpansToReturn) { |
| break; |
| } |
| if (span.getName().equals(filter.getSpanName())) { |
| ret.add(span.toSpanData()); |
| } |
| } |
| return ret; |
| } |
| } |