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/EppServletUtils.java

@@ -0,0 +1,67 @@
+// 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.domain.registry.flows.EppController.handleEppCommand;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static javax.servlet.http.HttpServletResponse.SC_BAD_REQUEST;
+import static javax.servlet.http.HttpServletResponse.SC_OK;
+
+import com.google.common.net.MediaType;
+import com.google.domain.registry.util.FormattingLogger;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import javax.servlet.http.HttpServletResponse;
+
+/** Utility methods for Epp servlet classes. */
+public final class EppServletUtils {
+
+  public static final MediaType APPLICATION_EPP_XML_UTF8 =
+      MediaType.create("application", "epp+xml").withCharset(UTF_8);
+
+  private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
+
+  /**
+   * Handle an EPP request and write out a servlet response.
+   *
+   * @throws IOException upon failure writing to {@code rsp}
+   */
+  static void handleEppCommandAndWriteResponse(
+      byte[] inputXmlBytes, HttpServletResponse rsp, SessionMetadata sessionMetadata)
+          throws IOException {
+    byte[] response;
+    try {
+      response = handleEppCommand(inputXmlBytes, sessionMetadata);
+    } catch (Exception e) {
+      logger.warning(e, "handleEppCommand general exception");
+      rsp.setStatus(SC_BAD_REQUEST);
+      return;
+    }
+    // Note that we always return 200 (OK) even if the EppController returns an error response.
+    // This is because returning an non-OK HTTP status code will cause the proxy server to
+    // silently close the connection without returning any data. The only time we will ever return
+    // a non-OK status (400) is if we fail to muster even an EPP error response message. In that
+    // case it's better to close the connection than to return garbage.
+    rsp.setStatus(SC_OK);
+    rsp.setContentType(APPLICATION_EPP_XML_UTF8.toString());
+    try (OutputStream output = rsp.getOutputStream()) {
+      output.write(response);
+    }
+  }
+
+  private EppServletUtils() {}
+}