1 /* 2 * Copyright 2016-17, OpenCensus Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.opencensus.trace.unsafe; 18 19 import io.grpc.Context; 20 import io.opencensus.trace.ContextHandle; 21 22 /** {@code ContextHandle} implementation using {@see io.grpc.Context}. */ 23 class ContextHandleImpl implements ContextHandle { 24 25 private final Context context; 26 ContextHandleImpl(Context context)27 public ContextHandleImpl(Context context) { 28 this.context = context; 29 } 30 getContext()31 Context getContext() { 32 return context; 33 } 34 35 @Override attach()36 public ContextHandle attach() { 37 return new ContextHandleImpl(context.attach()); 38 } 39 40 @Override detach(ContextHandle contextHandle)41 public void detach(ContextHandle contextHandle) { 42 ContextHandleImpl impl = (ContextHandleImpl) contextHandle; 43 context.detach(impl.context); 44 } 45 } 46