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

Class LogLevel.CLI

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.http.log.LogLevel.CLI

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

Enclosing class:

LogLevel

static class LogLevel.CLI
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Field Summary

Fields

Modifier and Type	Field	Description
private String	className
private String	hostName
private String	level
private LogLevel.Operations	operation
private String	protocol

Constructor Summary

Constructors

Constructor	Description
CLI(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
private HttpURLConnection	connect(URL url)	Connect to the URL.
private void	doGetLevel()	Send HTTP request to get log level.
private void	doSetLevel()	Send HTTP request to set log level.
(package private) String	fetchGetLevelResponse()
private String	fetchResponse(String urlString)	Send HTTP request and fetch response.
(package private) String	fetchSetLevelResponse()
void	parseArguments(String[] args)
private int	parseGetLevelArgs(String[] args, int index)
private int	parseProtocolArgs(String[] args, int index)
private int	parseSetLevelArgs(String[] args, int index)
int	run(String[] args)
private void	sendLogLevelRequest()	Send HTTP request to the daemon.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Details

operation

private LogLevel.Operations operation

protocol

private String protocol

hostName

private String hostName

className

private String className

level

private String level

Constructor Details

CLI

CLI(org.apache.hadoop.conf.Configuration conf)

Method Details

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

Exception

sendLogLevelRequest

private void sendLogLevelRequest()
                          throws org.apache.hadoop.HadoopIllegalArgumentException,
Exception

Send HTTP request to the daemon.

Throws:

org.apache.hadoop.HadoopIllegalArgumentException - if arguments are invalid.

Exception - if unable to connect

parseArguments

public void parseArguments(String[] args)
                    throws org.apache.hadoop.HadoopIllegalArgumentException

Throws:

org.apache.hadoop.HadoopIllegalArgumentException

parseGetLevelArgs

private int parseGetLevelArgs(String[] args,
 int index)
                       throws org.apache.hadoop.HadoopIllegalArgumentException

Throws:

org.apache.hadoop.HadoopIllegalArgumentException

parseSetLevelArgs

private int parseSetLevelArgs(String[] args,
 int index)
                       throws org.apache.hadoop.HadoopIllegalArgumentException

Throws:

org.apache.hadoop.HadoopIllegalArgumentException

parseProtocolArgs

private int parseProtocolArgs(String[] args,
 int index)
                       throws org.apache.hadoop.HadoopIllegalArgumentException

Throws:

org.apache.hadoop.HadoopIllegalArgumentException

doGetLevel

private void doGetLevel()
                 throws Exception

Send HTTP request to get log level.

Throws:

org.apache.hadoop.HadoopIllegalArgumentException - if arguments are invalid.

Exception - if unable to connect

fetchGetLevelResponse

String fetchGetLevelResponse()
                      throws Exception

Throws:

Exception

doSetLevel

private void doSetLevel()
                 throws Exception

Send HTTP request to set log level.

Throws:

org.apache.hadoop.HadoopIllegalArgumentException - if arguments are invalid.

Exception - if unable to connect

fetchSetLevelResponse

String fetchSetLevelResponse()
                      throws Exception

Throws:

Exception

connect

private HttpURLConnection connect(URL url)
                           throws Exception

Connect to the URL. Supports HTTP and supports SPNEGO authentication. It falls back to simple authentication if it fails to initiate SPNEGO.

Parameters:

url - the URL address of the daemon servlet

Returns:

a connected connection

Throws:

Exception - if it can not establish a connection.

fetchResponse

private String fetchResponse(String urlString)
                      throws Exception

Send HTTP request and fetch response.

Parameters:

urlString - URL and query string to the daemon's web UI

Returns:

the response from the daemon

Throws:

Exception - if unable to connect