google-nomulus/java/com/google/domain/registry/util/HttpServletUtils.java
mcilwain 0f4a1035b2 Refactor metrics servlet to be a Daggerized action
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120235694
2016-05-13 17:40:21 -04:00

48 lines
1.8 KiB
Java

// 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.util;
import static com.google.common.net.MediaType.PLAIN_TEXT_UTF_8;
import static com.google.domain.registry.util.PreconditionsUtils.checkArgumentNotNull;
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/** Utility methods for working with {@link HttpServlet}-related classes. */
public final class HttpServletUtils {
/**
* Returns the value of the given request's first {@code name} parameter, or throws
* {@code IllegalArgumentException} if the parameter is not present.
*
* @deprecated in favor of <code>RequestParameters.extractRequiredParameter</code>
*/
@Deprecated
public static String getRequiredParameterValue(HttpServletRequest req, String name) {
return checkArgumentNotNull(req.getParameter(name), "Missing required parameter: %s", name);
}
/**
* Sets the content type on an HttpServletResponse to UTF-8, returns 200 OK status, and sends
* "OK".
*/
public static void sendOk(HttpServletResponse rsp) throws IOException {
rsp.setContentType(PLAIN_TEXT_UTF_8.toString());
rsp.getWriter().write("OK\n");
}
}