| /* |
| * 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. |
| */ |
| |
| /** |
| * API for distributed tracing. |
| * |
| * <p>Distributed tracing, also called distributed request tracing, is a technique that helps |
| * debugging distributed applications. |
| * |
| * <p>Trace represents a tree of spans. A trace has a root span that encapsulates all the spans from |
| * start to end, and the children spans being the distinct calls invoked in between. |
| * |
| * <p>{@link io.opencensus.trace.Span} represents a single operation within a trace. |
| * |
| * <p>{@link io.opencensus.trace.Span Spans} are propagated in-process in the {@code |
| * io.grpc.Context} and between process using one of the wire propagation formats supported in the |
| * {@code io.opencensus.trace.propagation} package. |
| */ |
| // TODO: Add code examples. |
| package io.opencensus.trace; |