Package org.apache.hadoop.hbase.http.log

Class LogLevelExceptionUtils

java.lang.Object

org.apache.hadoop.hbase.http.log.LogLevelExceptionUtils

@Private
public class LogLevelExceptionUtils
extends Object

HTTP utility class to help propagate server side exception in log level servlet to the client over HTTP (HTML payload) It parses HTTP client connections and recreates the exception.

Constructor Summary

Constructors

Constructor	Description
LogLevelExceptionUtils()

Method Summary

Modifier and Type	Method	Description
private static String	extractValue(String html, String regex)
private static void	throwEx(Throwable ex)
private static <E extends Throwable> void	throwException(Throwable ex)
static void	validateResponse(HttpURLConnection conn, int expectedStatus)	Validates the status of an HttpURLConnection against an expected HTTP status code.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LogLevelExceptionUtils

public LogLevelExceptionUtils()

Method Details

throwEx

private static void throwEx(Throwable ex)

throwException

private static <E extends Throwable> void throwException(Throwable ex)
                                                  throws E

Throws:

E extends Throwable

validateResponse

public static void validateResponse(HttpURLConnection conn,
 int expectedStatus)
                             throws IOException

Validates the status of an HttpURLConnection against an expected HTTP status code. If the current status code is not the expected one it throws an exception with a detail message using Server side error messages if available.

NOTE: This is an adapted version of the original method in HttpServerUtil.java of Hadoop, but we handle for HTML response.

Parameters:

conn - the HttpURLConnection.

expectedStatus - the expected HTTP status code.

Throws:

IOException - thrown if the current status code does not match the expected one.

extractValue

private static String extractValue(String html,
 String regex)