Content-type: text/html Man page of Log::Message::Simple

Log::Message::Simple

Section: Perl Programmers Reference Guide (3perl)
Updated: 2007-12-18
Index Return to Main Contents
 

NAME

Log::Message::Simple  

SYNOPSIS

    use Log::Message::Simple qw[msg error debug
                                carp croak cluck confess];

    use Log::Message::Simple qw[:STD :CARP];

    ### standard reporting functionality
    msg(    "Connecting to database",           $verbose );
    error(  "Database connection failed: $@",   $verbose );
    debug(  "Connection arguments were: $args", $debug );

    ### standard carp functionality
    carp(   "Wrong arguments passed: @_" );
    croak(  "Fatal: wrong arguments passed: @_" );
    cluck(  "Wrong arguments passed -- including stacktrace: @_" );
    confess("Fatal: wrong arguments passed -- including stacktrace: @_" );

    ### retrieve individual message
    my @stack = Log::Message::Simple->stack;
    my @stack = Log::Message::Simple->flush;

    ### retrieve the entire stack in printable form
    my $msgs  = Log::Message::Simple->stack_as_string;
    my $trace = Log::Message::Simple->stack_as_string(1);

    ### redirect output
    local $Log::Message::Simple::MSG_FH     = \*STDERR;
    local $Log::Message::Simple::ERROR_FH   = \*STDERR;
    local $Log::Message::Simple::DEBUG_FH   = \*STDERR;
    
    ### force a stacktrace on error
    local $Log::Message::Simple::STACKTRACE_ON_ERROR = 1

 

DESCRIPTION

This module provides standardized logging facilities using the "Log::Message" module.  

FUNCTIONS

 

msg(message string [,VERBOSE])

Records a message on the stack, and prints it to "STDOUT" (or actually $MSG_FH, see the "GLOBAL VARIABLES" section below), if the "VERBOSE" option is true. The "VERBOSE" option defaults to false.

Exported by default, or using the ":STD" tag.  

debug(message string [,VERBOSE])

Records a debug message on the stack, and prints it to "STDOUT" (or actually $DEBUG_FH, see the "GLOBAL VARIABLES" section below), if the "VERBOSE" option is true. The "VERBOSE" option defaults to false.

Exported by default, or using the ":STD" tag.  

error(error string [,VERBOSE])

Records an error on the stack, and prints it to "STDERR" (or actually $ERROR_FH, see the "GLOBAL VARIABLES" sections below), if the "VERBOSE" option is true. The "VERBOSE" options defaults to true.

Exported by default, or using the ":STD" tag.  

carp();

Provides functionality equal to "Carp::carp()" while still logging to the stack.

Exported by using the ":CARP" tag.  

croak();

Provides functionality equal to "Carp::croak()" while still logging to the stack.

Exported by using the ":CARP" tag.  

confess();

Provides functionality equal to "Carp::confess()" while still logging to the stack.

Exported by using the ":CARP" tag.  

cluck();

Provides functionality equal to "Carp::cluck()" while still logging to the stack.

Exported by using the ":CARP" tag.  

CLASS METHODS

 

Log::Message::Simple->stack()

Retrieves all the items on the stack. Since "Log::Message::Simple" is implemented using "Log::Message", consult its manpage for the function "retrieve" to see what is returned and how to use the items.  

Log::Message::Simple->stack_as_string([TRACE])

Returns the whole stack as a printable string. If the "TRACE" option is true all items are returned with "Carp::longmess" output, rather than just the message. "TRACE" defaults to false.  

Log::Message::Simple->flush()

Removes all the items from the stack and returns them. Since "Log::Message::Simple" is implemented using "Log::Message", consult its manpage for the function "retrieve" to see what is returned and how to use the items.  

GLOBAL VARIABLES

$ERROR_FH
This is the filehandle all the messages sent to "error()" are being printed. This defaults to *STDERR.
$MSG_FH
This is the filehandle all the messages sent to "msg()" are being printed. This default to *STDOUT.
$DEBUG_FH
This is the filehandle all the messages sent to "debug()" are being printed. This default to *STDOUT.
$STACKTRACE_ON_ERROR
If this option is set to "true", every call to "error()" will generate a stacktrace using "Carp::shortmess()". Defaults to "false"


 

Index

NAME
SYNOPSIS
DESCRIPTION
FUNCTIONS
msg(message string [,VERBOSE])
debug(message string [,VERBOSE])
error(error string [,VERBOSE])
carp();
croak();
confess();
cluck();
CLASS METHODS
Log::Message::Simple->stack()
Log::Message::Simple->stack_as_string([TRACE])
Log::Message::Simple->flush()
GLOBAL VARIABLES

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Time: 04:14:16 GMT, September 24, 2010