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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 com.android.okhttp.internalandroidapi;
import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
import android.annotation.SystemApi;
import libcore.util.NonNull;
import com.squareup.okhttp.Cache;
import java.io.File;
/**
* An interface used to indicate a class can return a {@link CacheHolder} object.
* @hide
*/
@SystemApi(client = MODULE_LIBRARIES)
@libcore.api.CorePlatformApi(status = libcore.api.CorePlatformApi.Status.STABLE)
public interface HasCacheHolder {
/**
* Returns the {@link CacheHolder} object.
*
* @hide
*/
@SystemApi(client = MODULE_LIBRARIES)
@libcore.api.CorePlatformApi(status = libcore.api.CorePlatformApi.Status.STABLE)
@NonNull CacheHolder getCacheHolder();
/**
* A holder for an OkHttp internal Cache object. This class exists as an opaque layer over
* OkHttp internal classes.
* @hide
*/
@SystemApi(client = MODULE_LIBRARIES)
@libcore.api.CorePlatformApi(status = libcore.api.CorePlatformApi.Status.STABLE)
final class CacheHolder {
private final Cache okHttpCache;
private CacheHolder(Cache okHttpCache) {
this.okHttpCache = okHttpCache;
}
// This constructor is required for @libcore.api.CorePlatformApi stubs generation. Without
// it the constructor above is included in the stubs code which adds a dependency on
// okhttp.Cache that we don't want.
@SuppressWarnings("unused")
private CacheHolder() {
throw new UnsupportedOperationException();
}
/**
* Returns the underlying {@link Cache} object.
* @hide
*/
public Cache getCache() {
return okHttpCache;
}
/**
* Returns a new {@link CacheHolder} containing an OKHttp Cache with the specified settings.
*
* @param directory a writable directory
* @param maxSizeBytes the maximum number of bytes this cache should use to store
*
* @hide
*/
@SystemApi(client = MODULE_LIBRARIES)
@libcore.api.CorePlatformApi(status = libcore.api.CorePlatformApi.Status.STABLE)
public static @NonNull CacheHolder create(@NonNull File directory, long maxSizeBytes) {
Cache cache = new Cache(directory, maxSizeBytes);
return new CacheHolder(cache);
}
/**
* Returns true if the arguments supplied would result in an equivalent cache to this one
* being created if they were passed to {@link #create(File, long)}.
*
* @hide
*/
@SystemApi(client = MODULE_LIBRARIES)
@libcore.api.CorePlatformApi(status = libcore.api.CorePlatformApi.Status.STABLE)
public boolean isEquivalent(@NonNull File directory, long maxSizeBytes) {
return (okHttpCache.getDirectory().equals(directory)
&& okHttpCache.getMaxSize() == maxSizeBytes
&& !okHttpCache.isClosed());
}
}
}
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