DOKK / manpages / debian 12 / liblog-message-simple-perl / Log::Message::Simple.3pm.en
Log::Message::Simple(3pm) User Contributed Perl Documentation Log::Message::Simple(3pm)

Log::Message::Simple - Simplified interface to Log::Message

    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

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

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.

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.

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.

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.

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.

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.

$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"
2018-03-31 perl v5.26.1