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Agent::Channel::Handle(3) |
User Contributed Perl Documentation |
Agent::Channel::Handle(3) |
Log::Agent::Channel::Handle - I/O handle logging channel for Log::Agent
require Log::Agent::Channel::Handle;
my $driver = Log::Agent::Channel::Handle->make(
-prefix => "prefix",
-stampfmt => "own",
-showpid => 1,
-handle => \*FILE,
);
The handle channel performs logging to an already opened I/O handle, along with
the necessary prefixing and stamping of the messages.
The creation routine make() takes the following
arguments:
- "-handle" => handle
- Specifies the I/O handle to use. It can be given as a GLOB
reference, such as "\*FILE", or as an
"IO::Handle" object.
NOTE: Auto-flushing is not enabled on the
handle. Even when the channel is closed, the handle is
left as-is: we simply stop sending log messages to it.
- "-no_newline" => flag
- When set to true, never append any "\n" (on Unix) or
"\r\n" (on Windows) to log messages.
Internally, Log::Agent relies on the channel to delimit logged
lines appropriately, so this flag is not used. However, it might be
useful for "Log::Agent::Logger"
users.
Default is false, meaning newline markers are
systematically appended.
- "-no_prefixing" => flag
- When set to true, disable the prefixing logic entirely, i.e. the
following options are ignored completely:
"-prefix",
"-showpid",
"-no_ucfirst",
"-stampfmt".
Default is false.
- "-no_ucfirst" => flag
- When set to true, don't upper-case the first letter of the log
message entry when there's no prefix inserted before the logged line. When
there is a prefix, a ":" character follows, and therefore the
leading letter of the message should not be upper-cased anyway.
Default is false, meaning uppercasing is performed.
- "-prefix" => prefix
- The application prefix string to prepend to messages.
- "-showpid" => flag
- If set to true, the PID of the process will be appended within square
brackets after the prefix, to all messages.
Default is false.
- "-stampfmt" => (name | CODE)
- Specifies the time stamp format to use. By default, my "own"
format is used. See Log::Agent::Stamping for a description of the
available format names.
You may also specify a CODE ref: that routine will be called
every time we need to compute a time stamp. It should not expect any
parameter, and should return a string.
Beware of chdir(). If your program uses chdir(), you should always
specify logfiles by using absolute paths, otherwise you run the risk of having
your relative paths become invalid: there is no anchoring done at the time you
specify them. This is especially true when configured for rotation, since the
logfiles are recreated as needed and you might end up with many logfiles
scattered throughout all the directories you chdir()ed to.
Raphael Manfredi <Raphael_Manfredi@pobox.com>
Log::Agent::Logger(3), Log::Agent::Channel(3).
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