Package com.lightstreamer.log

Interface Logger

public interface Logger

Interface to be implemented to consume log from the library.
Instances of implemented classes are obtained by the library through the LoggerProvider instance set on LightstreamerClient.setLoggerProvider(com.lightstreamer.log.LoggerProvider).

Method Summary

Modifier and Type	Method	Description
void	debug(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Debug level and a related exception.
void	error(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Error level and a related exception.
void	fatal(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Fatal level and a related exception.
void	info(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Info level and a related exception.
boolean	isDebugEnabled()	Checks if this logger is enabled for the Debug level.
boolean	isErrorEnabled()	Checks if this logger is enabled for the Error level.
boolean	isFatalEnabled()	Checks if this logger is enabled for the Fatal level.
boolean	isInfoEnabled()	Checks if this logger is enabled for the Info level.
boolean	isTraceEnabled()	Checks if this logger is enabled for the Trace level.
boolean	isWarnEnabled()	Checks if this logger is enabled for the Warn level.
void	trace(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Trace level and a related exception.
void	warn(java.lang.String line, java.lang.Throwable exception)	Receives log messages at Warn level and a related exception.

Method Detail

error

void error(@Nonnull
           java.lang.String line,
           @Nullable
           java.lang.Throwable exception)

Receives log messages at Error level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

warn

void warn(@Nonnull
          java.lang.String line,
          @Nullable
          java.lang.Throwable exception)

Receives log messages at Warn level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

info

void info(@Nonnull
          java.lang.String line,
          @Nullable
          java.lang.Throwable exception)

Receives log messages at Info level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

debug

void debug(@Nonnull
           java.lang.String line,
           @Nullable
           java.lang.Throwable exception)

Receives log messages at Debug level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

trace

void trace(@Nonnull
           java.lang.String line,
           @Nullable
           java.lang.Throwable exception)

Receives log messages at Trace level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

fatal

void fatal(@Nonnull
           java.lang.String line,
           @Nullable
           java.lang.Throwable exception)

Receives log messages at Fatal level and a related exception.

Parameters:

line - The message to be logged.

exception - An Exception instance related to the current log message.

isTraceEnabled

boolean isTraceEnabled()

Checks if this logger is enabled for the Trace level.
The property should be true if this logger is enabled for Trace events, false otherwise.
This property is intended to lessen the computational cost of disabled log Trace statements. Note that even if the property is false, Trace log lines may be received anyway by the Trace methods.

Returns:

true if the Trace logger is enabled

isDebugEnabled

boolean isDebugEnabled()

Checks if this logger is enabled for the Debug level.
The property should be true if this logger is enabled for Debug events, false otherwise.
This property is intended to lessen the computational cost of disabled log Debug statements. Note that even if the property is false, Debug log lines may be received anyway by the Debug methods.

Returns:

true if the Debug logger is enabled

isInfoEnabled

boolean isInfoEnabled()

Checks if this logger is enabled for the Info level.
The property should be true if this logger is enabled for Info events, false otherwise.
This property is intended to lessen the computational cost of disabled log Info statements. Note that even if the property is false, Info log lines may be received anyway by the Info methods.

Returns:

true if the Info logger is enabled

isWarnEnabled

boolean isWarnEnabled()

Checks if this logger is enabled for the Warn level.
The property should be true if this logger is enabled for Warn events, false otherwise.
This property is intended to lessen the computational cost of disabled log Warn statements. Note that even if the property is false, Warn log lines may be received anyway by the Warn methods.

Returns:

true if the Warn logger is enabled

isErrorEnabled

boolean isErrorEnabled()

Checks if this logger is enabled for the Error level.
The property should be true if this logger is enabled for Error events, false otherwise.
This property is intended to lessen the computational cost of disabled log Error statements. Note that even if the property is false, Error log lines may be received anyway by the Error methods.

Returns:

true if the Error logger is enabled

isFatalEnabled

boolean isFatalEnabled()

Checks if this logger is enabled for the Fatal level.
The property should be true if this logger is enabled for Fatal events, false otherwise.
This property is intended to lessen the computational cost of disabled log Fatal statements. Note that even if the property is false, Fatal log lines may be received anyway by the Fatal methods.

Returns:

true if the Fatal logger is enabled