To create a file appender, use the following rhino-console command or related MBean operation. Since Rhino 2.6 there are many varieties of file appenders supported.

There are two major classes of file appenders discussed below. Non rolling file appenders do not rollover logfiles ever. Rolling file appenders are able to roll over logfiles, and must be configured with automatic rollover rules.

Warning FileName arguments are paths to files, not just filenames. To create a logfile in the configured logging directory (Default is ${NODE_HOME}/work/log) one can use the property ${logDir} as the leading element of the filename

Non rolling file appenders

These appenders cannot be rolled over with the rolloverlogfiles console command.

Console command: createfileappender

Command

createfileappender <appenderName> <fileName> [-append <true|false>] [-bufferedIO
<true|false>] [-bufferSize size] [-createOnDemand <true|false>] [-immediateFlush
<true|false>] [-locking <true|false>] [-ignoreExceptions <true|false>] [-pattern
<pattern>]
  Description
    The FileAppender is an appender that writes to the File named in the <fileName>
    parameter.
  Required Arguments
    appenderName  The name of the Appender.
    fileName  The name of the file to write to. If the file, or any of its parent
    directories, do not exist, they will be created.
  Options
    -append  When true, records will be appended to the end of the file. When set to
    false, the file will be cleared before new records are written. The default is
    true.
    -bufferedIO  When true, records will be written to a buffer and the data will be
    written to disk when the buffer is full or, if immediateFlush is set, when the
    record is written. File locking cannot be used with bufferedIO. The default is
    true.
    -bufferSize  The buffer size. The default is 8192 bytes.
    -createOnDemand  When true, the appender creates the file on-demand. The default
    is false.
    -immediateFlush  When true, each write will be followed by a flush. This will
    guarantee the data is written to disk but could impact performance. The default
    is true.
    -locking  When true, I/O operations will occur only while the file lock is held.
    The default is false.
    -ignoreExceptions  When true, exceptions encountered while appending events will
    be internally logged and then ignored. The default is true.
    -pattern  The pattern to use for logging output.

Example

To create a logfile in the configured logging directory
$ ./rhino-console createfileappender myappender "${logDir}/myappender.log"
Done.
To create a logfile in an absolute path
$ ./rhino-console createfileappender myappender /var/logs/rhino/myappender.log
Done.

Console command: createrandomaccessfileappender

Command

createrandomaccessfileappender <appenderName> <fileName> [-append <true|false>]
[-immediateFlush <true|false>] [-bufferSize size] [-ignoreExceptions
<true|false>] [-pattern <pattern>]
  Description
    The RandomAccessFileAppender is an appender that writes to the File named in the
    <fileName> parameter. It is similar to the standard FileAppender except it is
    always buffered.
  Required Arguments
    appenderName  The name of the Appender.
    fileName  The name of the file to write to. If the file, or any of its parent
    directories, do not exist, they will be created.
  Options
    -append  When true, records will be appended to the end of the file. When set to
    false, the file will be cleared before new records are written. The default is
    true.
    -immediateFlush  When true, each write will be followed by a flush. This will
    guarantee the data is written to disk but could impact performance. The default
    is true.
    -bufferSize  The buffer size. The default is 8192 bytes.
    -ignoreExceptions  When true, exceptions encountered while appending events will
    be internally logged and then ignored. The default is true.
    -pattern  The pattern to use for logging output.

Example

$ ./rhino-console createrandomaccessfileappender myappender "${logDir}/myappender.log"
Done.

Console command: creatememorymappedfileappender

Command

creatememorymappedfileappender <appenderName> <fileName> [-append <true|false>]
[-immediateFlush <true|false>] [-regionLength length] [-ignoreExceptions
<true|false>] [-pattern <pattern>]
  Description
    The MemoryMappedFileAppender maps a part of the specified file into memory and
    writes log events to this memory, relying on the operating system's virtual
    memory manager to synchronize the changes to the storage device
  Required Arguments
    appenderName  The name of the Appender.
    fileName  The name of the file to write to. If the file, or any of its parent
    directories, do not exist, they will be created.
  Options
    -append  When true, records will be appended to the end of the file. When set to
    false, the file will be cleared before new records are written. The default is
    true.
    -immediateFlush  When true, each write will be followed by a flush. This will
    guarantee the data is written to disk but could impact performance. The default
    is true.
    -regionLength  The length of the mapped region, defaults to 32 MB.
    -ignoreExceptions  When true, exceptions encountered while appending events will
    be internally logged and then ignored. The default is true.
    -pattern  The pattern to use for logging output.

Example

$ ./rhino-console creatememorymappedfileappender myappender "${logDir}/myappender.log"
Done.

Rolling file appenders

Console command: createrollingfileappender

Command

createrollingfileappender <appenderName> <fileName> <filePattern> <size>
[-append <true|false>] [-bufferedIO <true|false>] [-bufferSize size]
[-createOnDemand <true|false>] [-immediateFlush <true|false>] [-min <min>] [-max
<max>] [-ignoreExceptions <true|false>] [-pattern <pattern>]
  Description
    The RollingFileAppender is an appender that writes to the File named in the
    <fileName> parameter and rolls the file over according the values set by the
    <size> [-min][-max] options.
  Required Arguments
    appenderName  The name of the Appender.
    fileName  The name of the file to write to. If the file, or any of its parent
    directories, do not exist, they will be created.
    filePattern  The pattern of the file name of the archived log file. Both a
    date/time pattern compatible with SimpleDateFormat and/or a %i which represents
    an integer counter can be used.
    size  The file size required before a roll over will occur.
  Options
    -append  When true, records will be appended to the end of the file. When set to
    false, the file will be cleared before new records are written. The default is
    true.
    -bufferedIO  When true, records will be written to a buffer and the data will be
    written to disk when the buffer is full or, if immediateFlush is set, when the
    record is written. File locking cannot be used with bufferedIO. The default is
    true.
    -bufferSize  The buffer size. The default is 8192 bytes.
    -createOnDemand  When true, the appender creates the file on-demand. The default
    is false.
    -immediateFlush  When true, each write will be followed by a flush. This will
    guarantee the data is written to disk but could impact performance. The default
    is true.
    -min  The minimum value of the roll over counter. The default value is 1.
    -max  The maximum value of the roll over counter. Once this values is reached
    older archives will be deleted on subsequent rollovers.
    -ignoreExceptions  When true, exceptions encountered while appending events will
    be internally logged and then ignored. The default is true.
    -pattern  The pattern to use for logging output.

Example

$ ./rhino-console createrollingfileappender myappender "${logDir}/myappender.log"
Done.

Console command: createrollingrandomaccessfileappender

Command

createrollingrandomaccessfileappender <appenderName> <fileName> <filePattern>
<size> [-append <true|false>] [-bufferSize size] [-immediateFlush <true|false>]
[-min <min>] [-max <max>] [-ignoreExceptions <true|false>] [-pattern <pattern>]
  Description
    The RollingRandomAccessFileAppender is an appender that writes to the File named
    in the <fileName> parameter and rolls the file over according the values set by
    the <size>[-min][-max] options. It is similar to the standard
    RollingFileAppender except it is always buffered.
  Required Arguments
    appenderName  The name of the Appender.
    fileName  The name of the file to write to. If the file, or any of its parent
    directories, do not exist, they will be created.
    filePattern  The pattern of the file name of the archived log file. Both a
    date/time pattern compatible with SimpleDateFormat and/or a %i which represents
    an integer counter can be used.
    size  The file size required before a roll over will occur.
  Options
    -append  When true, records will be appended to the end of the file. When set to
    false, the file will be cleared before new records are written. The default is
    true.
    -bufferSize  The buffer size. The default is 8192 bytes.
    -immediateFlush  When true, each write will be followed by a flush. This will
    guarantee the data is written to disk but could impact performance. The default
    is true.
    -min  The minimum value of the roll over counter. The default value is 1.
    -max  The maximum value of the roll over counter. Once this values is reached
    older archives will be deleted on subsequent rollovers.
    -ignoreExceptions  When true, exceptions encountered while appending events will
    be internally logged and then ignored. The default is true.
    -pattern  The pattern to use for logging output.

Example

$ ./rhino-console createrollingrandomaccessfileappender myappender "${logDir}/myappender.log"
Done.
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Rhino Version 3.2