| /* |
| * Copyright 2017, 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; |
| |
| import io.opencensus.common.Clock; |
| import io.opencensus.implcore.internal.EventQueue; |
| import io.opencensus.implcore.internal.SimpleEventQueue; |
| import io.opencensus.implcore.trace.RecordEventsSpanImpl.StartEndHandler; |
| import io.opencensus.implcore.trace.config.TraceConfigImpl; |
| import io.opencensus.implcore.trace.export.ExportComponentImpl; |
| import io.opencensus.implcore.trace.internal.RandomHandler; |
| import io.opencensus.implcore.trace.propagation.PropagationComponentImpl; |
| import io.opencensus.trace.TraceComponent; |
| import io.opencensus.trace.Tracer; |
| import io.opencensus.trace.config.TraceConfig; |
| import io.opencensus.trace.export.ExportComponent; |
| import io.opencensus.trace.propagation.PropagationComponent; |
| |
| /** |
| * Helper class to allow sharing the code for all the {@link TraceComponent} implementations. This |
| * class cannot use inheritance because in version 0.5.* the constructor of the {@code |
| * TraceComponent} is package protected. |
| * |
| * <p>This can be changed back to inheritance when version 0.5.* is no longer supported. |
| */ |
| public final class TraceComponentImplBase { |
| private final ExportComponentImpl exportComponent; |
| private final PropagationComponent propagationComponent = new PropagationComponentImpl(); |
| private final Clock clock; |
| private final TraceConfig traceConfig = new TraceConfigImpl(); |
| private final Tracer tracer; |
| |
| /** |
| * Creates a new {@code TraceComponentImplBase}. |
| * |
| * @param clock the clock to use throughout tracing. |
| * @param randomHandler the random number generator for generating trace and span IDs. |
| * @param eventQueue the queue implementation. |
| */ |
| public TraceComponentImplBase(Clock clock, RandomHandler randomHandler, EventQueue eventQueue) { |
| this.clock = clock; |
| // TODO(bdrutu): Add a config/argument for supportInProcessStores. |
| if (eventQueue instanceof SimpleEventQueue) { |
| exportComponent = ExportComponentImpl.createWithoutInProcessStores(eventQueue); |
| } else { |
| exportComponent = ExportComponentImpl.createWithInProcessStores(eventQueue); |
| } |
| StartEndHandler startEndHandler = |
| new StartEndHandlerImpl( |
| exportComponent.getSpanExporter(), |
| exportComponent.getRunningSpanStore(), |
| exportComponent.getSampledSpanStore(), |
| eventQueue); |
| tracer = new TracerImpl(randomHandler, startEndHandler, clock, traceConfig); |
| } |
| |
| public Tracer getTracer() { |
| return tracer; |
| } |
| |
| public PropagationComponent getPropagationComponent() { |
| return propagationComponent; |
| } |
| |
| public final Clock getClock() { |
| return clock; |
| } |
| |
| public ExportComponent getExportComponent() { |
| return exportComponent; |
| } |
| |
| public TraceConfig getTraceConfig() { |
| return traceConfig; |
| } |
| } |