Add request/auth package to Nomulus release

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=147087621

java/google/registry/request/auth/UserAuthInfo.java

@@ -0,0 +1,49 @@
+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// 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 google.registry.request.auth;
+
+import com.google.appengine.api.users.User;
+import com.google.auto.value.AutoValue;
+import com.google.common.base.Optional;
+
+/** Extra information provided by the authentication mechanism about the user. */
+@AutoValue
+public abstract class UserAuthInfo {
+
+  /** User object from the AppEngine Users API. */
+  public abstract User user();
+
+  /**
+   * Whether the user is an admin.
+   *
+   * <p>Note that, in App Engine parlance, an admin is any user who is a project owner, editor, OR
+   * viewer (as well as the specific role App Engine Admin). So even users with read-only access to
+   * the App Engine product qualify as an "admin".
+   */
+  public abstract boolean isUserAdmin();
+
+  /** Used by the OAuth authentication mechanism (only) to return information about the session. */
+  public abstract Optional<OAuthTokenInfo> oauthTokenInfo();
+
+  static UserAuthInfo create(
+      User user, boolean isUserAdmin) {
+    return new AutoValue_UserAuthInfo(user, isUserAdmin, Optional.<OAuthTokenInfo>absent());
+  }
+
+  static UserAuthInfo create(
+      User user, boolean isUserAdmin, OAuthTokenInfo oauthTokenInfo) {
+    return new AutoValue_UserAuthInfo(user, isUserAdmin, Optional.of(oauthTokenInfo));
+  }
+}