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(String line, Throwable exception)
    Receives log messages at Debug level and a related exception.
    void
    error(String line, Throwable exception)
    Receives log messages at Error level and a related exception.
    void
    fatal(String line, Throwable exception)
    Receives log messages at Fatal level and a related exception.
    void
    info(String line, 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(String line, Throwable exception)
    Receives log messages at Trace level and a related exception.
    void
    warn(String line, Throwable exception)
    Receives log messages at Warn level and a related exception.

  • Method Details

    • error

      void error(@Nonnull String line, @Nullable 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 String line, @Nullable 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 String line, @Nullable 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 String line, @Nullable 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 String line, @Nullable 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 String line, @Nullable 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