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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.kylin.rest.util;
import static org.apache.kylin.common.constant.Constants.TRACE_ID;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Locale;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.lang3.StringUtils;
import org.apache.kylin.common.util.JsonUtil;
import org.apache.kylin.rest.response.ErrorResponse;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServletServerHttpRequest;
public class HttpUtil {
private static final String DEFAULT_CONTENT_TYPE = MediaType.APPLICATION_JSON_VALUE;
private static final Charset DEFAULT_CONTENT_CHARSET = StandardCharsets.UTF_8;
private HttpUtil() {
}
public static String getFullRequestUrl(HttpServletRequest request) {
String url = request.getRequestURL().toString();
if (StringUtils.isNotBlank(request.getQueryString())) {
if (url.lastIndexOf("?") > -1) {
return url + "&" + request.getQueryString();
} else {
return url + "?" + request.getQueryString();
}
}
return request.getRequestURL().toString();
}
public static void setErrorResponse(HttpServletRequest request, HttpServletResponse response, int statusCode,
Exception ex) throws IOException {
response.setStatus(statusCode);
response.setContentType(DEFAULT_CONTENT_TYPE);
ErrorResponse errorResponse = new ErrorResponse(getFullRequestUrl(request), ex);
String errorStr = JsonUtil.writeValueAsIndentString(errorResponse);
response.setCharacterEncoding(DEFAULT_CONTENT_CHARSET.name());
byte[] responseData = errorStr.getBytes(DEFAULT_CONTENT_CHARSET);
ServletOutputStream writer = response.getOutputStream();
response.setContentLength(responseData.length);
writer.write(responseData, 0, responseData.length);
writer.flush();
writer.close();
}
public static String formatRequest(HttpServletRequest request) {
StringBuilder sb = new StringBuilder();
sb.append("Url: ").append(getFullRequestUrl(request)).append("\n");
sb.append("Headers: ").append(new ServletServerHttpRequest(request).getHeaders()).append("\n");
sb.append("RemoteAddr: ").append(request.getRemoteAddr()).append("\n");
sb.append("RemoteUser: ").append(request.getRemoteUser()).append("\n");
sb.append("Session: ").append(formatSession(request.getSession(false))).append("\n");
Object attr = request.getAttribute(TRACE_ID);
if (attr != null) {
sb.append("TraceId: ").append(attr).append("\n");
}
return sb.toString();
}
public static String formatSession(HttpSession session) {
return String.format(Locale.ROOT, "Id=%s; createTime=%s; lastAccessedTime=%s", session.getId(),
session.getCreationTime(), session.getLastAccessedTime());
}
}
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