| /* |
| * 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.tags.propagation; |
| |
| import io.opencensus.tags.TagContext; |
| |
| /** |
| * Object for serializing and deserializing {@link TagContext}s with the binary format. |
| * |
| * <p>See <a |
| * href="https://github.com/census-instrumentation/opencensus-specs/blob/master/encodings/BinaryEncoding.md#tag-context">opencensus-specs</a> |
| * for the specification of the cross-language binary serialization format. |
| * |
| * @since 0.8 |
| */ |
| public abstract class TagContextBinarySerializer { |
| |
| /** |
| * Serializes the {@code TagContext} into the on-the-wire representation. |
| * |
| * <p>This method should be the inverse of {@link #fromByteArray}. |
| * |
| * @param tags the {@code TagContext} to serialize. |
| * @return the on-the-wire representation of a {@code TagContext}. |
| * @throws TagContextSerializationException if the result would be larger than the maximum allowed |
| * serialized size. |
| * @since 0.8 |
| */ |
| public abstract byte[] toByteArray(TagContext tags) throws TagContextSerializationException; |
| |
| /** |
| * Creates a {@code TagContext} from the given on-the-wire encoded representation. |
| * |
| * <p>This method should be the inverse of {@link #toByteArray}. |
| * |
| * @param bytes on-the-wire representation of a {@code TagContext}. |
| * @return a {@code TagContext} deserialized from {@code bytes}. |
| * @throws TagContextDeserializationException if there is a parse error, the input contains |
| * invalid tags, or the input is larger than the maximum allowed serialized size. |
| * @since 0.8 |
| */ |
| public abstract TagContext fromByteArray(byte[] bytes) throws TagContextDeserializationException; |
| } |