water.util

Class Log

java.lang.Object

water.util.Log

public abstract class Log
extends java.lang.Object

Log for H2O. OOME: when the VM is low on memory, OutOfMemoryError can be thrown in the logging framework while it is trying to print a message. In this case the first message that fails is recorded for later printout, and a number of messages can be discarded. The framework will attempt to print the recorded message later, and report the number of dropped messages, but this done in a best effort and lossy manner. Basically when an OOME occurs during logging, no guarantees are made about the messages.

Constructor Summary

Constructors

Constructor and Description
Log()

Method Summary

Methods

Modifier and Type	Method and Description
static void	debug(java.lang.Object... objs)
static void	err(java.lang.Object... objs)
static void	fatal(java.lang.Object... objs)
static java.lang.String	fixedLength(java.lang.String s, int length)
static void	flushStdout()
static java.lang.String	getLogDir()
static java.lang.String	getLogFileName(java.lang.String level)
static java.lang.String	getLogPathFileNameStem()
static boolean	getQuiet()
static void	httpd(java.lang.String msg)
static void	ignore(java.lang.Throwable e)
static void	ignore(java.lang.Throwable e, java.lang.String msg)
static void	ignore(java.lang.Throwable e, java.lang.String msg, boolean printException)
static void	info(java.lang.Object... objs)
static void	info(java.lang.String s, boolean stdout)
static void	init(java.lang.String slvl, boolean quiet)
static void	POST(int n, java.lang.Exception e)
static void	POST(int n, java.lang.String s) POST stands for "Power on self test".
static void	setQuiet(boolean q)
static java.lang.RuntimeException	throwErr(java.lang.Throwable e)
static void	trace(java.lang.Object... objs)
static void	warn(java.lang.Object... objs)

Methods inherited from class java.lang.Object

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

Constructor Detail

Log

public Log()

Method Detail

init

public static void init(java.lang.String slvl,
        boolean quiet)

trace

public static void trace(java.lang.Object... objs)

debug

public static void debug(java.lang.Object... objs)

info

public static void info(java.lang.Object... objs)

warn

public static void warn(java.lang.Object... objs)

err

public static void err(java.lang.Object... objs)

fatal

public static void fatal(java.lang.Object... objs)

httpd

public static void httpd(java.lang.String msg)

info

public static void info(java.lang.String s,
        boolean stdout)

throwErr

public static java.lang.RuntimeException throwErr(java.lang.Throwable e)

flushStdout

public static void flushStdout()

getLogDir

public static java.lang.String getLogDir()
                                  throws java.lang.Exception

Returns:

This is what should be used when doing Download All Logs.

Throws:

java.lang.Exception

getLogPathFileNameStem

public static java.lang.String getLogPathFileNameStem()
                                               throws java.lang.Exception

Returns:

The common prefix for all of the different log files for this process.

Throws:

java.lang.Exception

getLogFileName

public static java.lang.String getLogFileName(java.lang.String level)
                                       throws java.lang.Exception

Returns:

This is what shows up in the Web UI when clicking on show log file. File name only.

Throws:

java.lang.Exception

fixedLength

public static java.lang.String fixedLength(java.lang.String s,
                           int length)

ignore

public static void ignore(java.lang.Throwable e)

ignore

public static void ignore(java.lang.Throwable e,
          java.lang.String msg)

ignore

public static void ignore(java.lang.Throwable e,
          java.lang.String msg,
          boolean printException)

POST

public static void POST(int n,
        java.lang.String s)

POST stands for "Power on self test". Stamp a POST code to /tmp. This is for bringup, when no logging or stdout I/O is reliable. (Especially when embedded, such as in hadoop mapreduce, for example.)

Parameters:

n - POST code.

s - String to emit.

POST

public static void POST(int n,
        java.lang.Exception e)

setQuiet

public static void setQuiet(boolean q)

getQuiet

public static boolean getQuiet()