Merge "Cache for OAuth access tokens"

2016-05-11 07:44:36 +00:00
parent 648de48754 524faceb97
commit a6d646b658
5 changed files with 183 additions and 8 deletions
--- a/gerrit-server/src/main/java/com/google/gerrit/server/auth/oauth/OAuthTokenCache.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/auth/oauth/OAuthTokenCache.java
@@ -0,0 +1,105 @@
+// 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.auth.oauth.OAuthUserInfo;
+import com.google.gerrit.extensions.registration.DynamicItem;
+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, String.class, OAuthToken.class);
+      }
+    };
+  }
+
+  private final Cache<String, OAuthToken> cache;
+
+  @Inject
+  OAuthTokenCache(@Named(OAUTH_TOKENS) Cache<String, OAuthToken> cache,
+      DynamicItem<OAuthTokenEncrypter> encrypter) {
+    this.cache = cache;
+    this.encrypter = encrypter;
+  }
+
+  public boolean has(OAuthUserInfo user) {
+    return user != null
+      ? cache.getIfPresent(user.getUserName()) != null
+      : false;
+  }
+
+  public OAuthToken get(OAuthUserInfo user) {
+    return user != null
+      ? get(user.getUserName())
+      : null;
+  }
+
+  public OAuthToken get(String userName) {
+    OAuthToken accessToken = cache.getIfPresent(userName);
+    if (accessToken == null) {
+      return null;
+    }
+    accessToken = decrypt(accessToken);
+    if (accessToken.isExpired()) {
+      cache.invalidate(userName);
+      return null;
+    }
+    return accessToken;
+  }
+
+  public void put(OAuthUserInfo user, OAuthToken accessToken) {
+    cache.put(checkNotNull(user.getUserName()),
+        encrypt(checkNotNull(accessToken)));
+  }
+
+  public void remove(OAuthUserInfo user) {
+    if (user != null) {
+      cache.invalidate(user.getUserName());
+    }
+  }
+
+  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);
+  }
+}