mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

java/google/registry/flows/HttpSessionMetadata.java

@@ -0,0 +1,61 @@
+// Copyright 2016 The Domain Registry 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 com.google.domain.registry.flows;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import javax.servlet.http.HttpSession;
+
+/** A metadata class that is a wrapper around {@link HttpSession}. */
+public class HttpSessionMetadata extends SessionMetadata {
+
+  private final HttpSession session;
+  private boolean isValid = true;
+
+  public HttpSessionMetadata(TransportCredentials credentials, HttpSession session) {
+    this.session = session;
+    setTransportCredentials(credentials);
+  }
+
+  @Override
+  protected void checkValid() {
+    checkState(isValid, "This session has been invalidated.");
+  }
+
+  @Override
+  public void invalidate() {
+    session.invalidate();
+    isValid = false;
+  }
+
+  @Override
+  protected void setProperty(String key, Object value) {
+    if (value == null) {
+      session.removeAttribute(key);
+    } else {
+      session.setAttribute(key, value);
+    }
+  }
+
+  @Override
+  protected Object getProperty(String key) {
+    return session.getAttribute(key);
+  }
+
+  @Override
+  public SessionSource getSessionSource() {
+    return SessionSource.HTTP;
+  }
+}