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// Copyright (C) 2016 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.google.gerrit.server.auth.oauth;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.cache.Cache;
import com.google.gerrit.extensions.auth.oauth.OAuthToken;
import com.google.gerrit.extensions.auth.oauth.OAuthTokenEncrypter;
import com.google.gerrit.extensions.registration.DynamicItem;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.server.cache.CacheModule;
import com.google.inject.Inject;
import com.google.inject.Module;
import com.google.inject.Singleton;
import com.google.inject.name.Named;
@Singleton
public class OAuthTokenCache {
public static final String OAUTH_TOKENS = "oauth_tokens";
private final DynamicItem<OAuthTokenEncrypter> encrypter;
public static Module module() {
return new CacheModule() {
@Override
protected void configure() {
persist(OAUTH_TOKENS, Account.Id.class, OAuthToken.class);
}
};
}
private final Cache<Account.Id, OAuthToken> cache;
@Inject
OAuthTokenCache(
@Named(OAUTH_TOKENS) Cache<Account.Id, OAuthToken> cache,
DynamicItem<OAuthTokenEncrypter> encrypter) {
this.cache = cache;
this.encrypter = encrypter;
}
public OAuthToken get(Account.Id id) {
OAuthToken accessToken = cache.getIfPresent(id);
if (accessToken == null) {
return null;
}
accessToken = decrypt(accessToken);
if (accessToken.isExpired()) {
cache.invalidate(id);
return null;
}
return accessToken;
}
public void put(Account.Id id, OAuthToken accessToken) {
cache.put(id, encrypt(checkNotNull(accessToken)));
}
public void remove(Account.Id id) {
cache.invalidate(id);
}
private OAuthToken encrypt(OAuthToken token) {
OAuthTokenEncrypter enc = encrypter.get();
if (enc == null) {
return token;
}
return enc.encrypt(token);
}
private OAuthToken decrypt(OAuthToken token) {
OAuthTokenEncrypter enc = encrypter.get();
if (enc == null) {
return token;
}
return enc.decrypt(token);
}
}
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