1 /* 2 * Copyright 2019 The gRPC 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.grpc.cronet; 18 19 import io.grpc.CallOptions; 20 import io.grpc.Internal; 21 import java.util.Collection; 22 import java.util.Collections; 23 24 /** 25 * Internal accessor class for call options using with the Cronet transport. This is intended for 26 * usage internal to the gRPC team. If you *really* think you need to use this, contact the gRPC 27 * team first. 28 */ 29 @Internal 30 public final class InternalCronetCallOptions { 31 32 // Prevent instantiation InternalCronetCallOptions()33 private InternalCronetCallOptions() {} 34 withAnnotation(CallOptions callOptions, Object annotation)35 public static CallOptions withAnnotation(CallOptions callOptions, Object annotation) { 36 return CronetClientStream.withAnnotation(callOptions, annotation); 37 } 38 39 /** 40 * Returns Cronet annotations for gRPC included in the given {@code callOptions}. Annotations 41 * are attached via {@link #withAnnotation(CallOptions, Object)}. 42 */ getAnnotations(CallOptions callOptions)43 public static Collection<Object> getAnnotations(CallOptions callOptions) { 44 Collection<Object> annotations = 45 callOptions.getOption(CronetClientStream.CRONET_ANNOTATIONS_KEY); 46 if (annotations == null) { 47 annotations = Collections.emptyList(); 48 } 49 return annotations; 50 } 51 } 52