Interface LogService

public interface LogService
Provides methods for bundles to write messages to the log.

LogService methods are provided to log messages; optionally with a ServiceReference object or an exception.

Bundles must log messages in the OSGi environment with a severity level according to the following hierarchy:

  1. LOG_ERROR
  2. LOG_WARNING
  3. LOG_INFO
  4. LOG_DEBUG
Version:
$Revision: 5654 $

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    LOG_DEBUG
    A debugging message (Value 4).
    static final int
    LOG_ERROR
    An error message (Value 1).
    static final int
    LOG_INFO
    An informational message (Value 3).
    static final int
    LOG_WARNING
    A warning message (Value 2).

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    log(int level, String message)
    Logs a message.
    void
    log(int level, String message, Throwable exception)
    Logs a message with an exception.
    void
    log(org.osgi.framework.ServiceReference sr, int level, String message)
    Logs a message associated with a specific ServiceReference object.
    void
    log(org.osgi.framework.ServiceReference sr, int level, String message, Throwable exception)
    Logs a message with an exception associated and a ServiceReference object.

  • Field Details

    • LOG_ERROR

      static final int LOG_ERROR
      An error message (Value 1).

      This log entry indicates the bundle or service may not be functional.

      See Also:

    • LOG_WARNING

      static final int LOG_WARNING
      A warning message (Value 2).

      This log entry indicates a bundle or service is still functioning but may experience problems in the future because of the warning condition.

      See Also:

    • LOG_INFO

      static final int LOG_INFO
      An informational message (Value 3).

      This log entry may be the result of any change in the bundle or service and does not indicate a problem.

      See Also:

    • LOG_DEBUG

      static final int LOG_DEBUG
      A debugging message (Value 4).

      This log entry is used for problem determination and may be irrelevant to anyone but the bundle developer.

      See Also:

  • Method Details

    • log

      void log(int level, String message)
      Logs a message.

      The ServiceReference field and the Throwable field of the LogEntry object will be set to null.

      Parameters:
      level - The severity of the message. This should be one of the defined log levels but may be any integer that is interpreted in a user defined way.
      message - Human readable string describing the condition or null.
      See Also:

    • log

      void log(int level, String message, Throwable exception)
      Logs a message with an exception.

      The ServiceReference field of the LogEntry object will be set to null.

      Parameters:
      level - The severity of the message. This should be one of the defined log levels but may be any integer that is interpreted in a user defined way.
      message - The human readable string describing the condition or null.
      exception - The exception that reflects the condition or null.
      See Also:

    • log

      void log(org.osgi.framework.ServiceReference sr, int level, String message)
      Logs a message associated with a specific ServiceReference object.

      The Throwable field of the LogEntry will be set to null.

      Parameters:
      sr - The ServiceReference object of the service that this message is associated with or null.
      level - The severity of the message. This should be one of the defined log levels but may be any integer that is interpreted in a user defined way.
      message - Human readable string describing the condition or null.
      See Also:

    • log

      void log(org.osgi.framework.ServiceReference sr, int level, String message, Throwable exception)
      Logs a message with an exception associated and a ServiceReference object.
      Parameters:
      sr - The ServiceReference object of the service that this message is associated with.
      level - The severity of the message. This should be one of the defined log levels but may be any integer that is interpreted in a user defined way.
      message - Human readable string describing the condition or null.
      exception - The exception that reflects the condition or null.
      See Also: