1 /* 2 * Copyright 2022 Google LLC 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 package com.google.android.libraries.mobiledatadownload.downloader; 17 18 import com.google.auto.value.AutoValue; 19 import com.google.common.base.Optional; 20 21 /** Response for checking content change. */ 22 @AutoValue 23 public abstract class CheckContentChangeResponse { 24 CheckContentChangeResponse()25 CheckContentChangeResponse() {} 26 27 /** Whether or not the content is changed. */ contentChanged()28 public abstract boolean contentChanged(); 29 30 /** 31 * The optional fresh ETag that is being fetched from the url. When the value euquals {@link 32 * Optional#absent()}, it means that the target url does not support ETag. 33 */ freshETagOptional()34 public abstract Optional<String> freshETagOptional(); 35 newBuilder()36 public static Builder newBuilder() { 37 return new AutoValue_CheckContentChangeResponse.Builder(); 38 } 39 40 /** Builder for {@link CheckContentChangeResponse}. */ 41 @AutoValue.Builder 42 public abstract static class Builder { 43 Builder()44 Builder() {} 45 46 /** Sets whether the content is changed, which is required. */ setContentChanged(boolean contentChanged)47 public abstract Builder setContentChanged(boolean contentChanged); 48 49 /** Sets the fresh ETag. */ setFreshETagOptional(Optional<String> freshETagOptional)50 public abstract Builder setFreshETagOptional(Optional<String> freshETagOptional); 51 build()52 public abstract CheckContentChangeResponse build(); 53 } 54 } 55