3 use constant NONE => 0;
4 use constant INFO => 1;
5 use constant DEBUG1 => 1 << 1;
6 use constant DEBUG2 => 1 << 2;
7 use constant QUERY => 1 << 3;
8 use constant TRACE => 1 << 4;
9 use constant BACKTRACE_ON_ERROR => 1 << 5;
10 use constant REQUEST_TIMER => 1 << 6;
11 use constant WARN => 1 << 7;
12 use constant TRACE2 => 1 << 8;
13 use constant ALL => (1 << 9) - 1;
14 use constant DEVEL => INFO | DEBUG1 | QUERY | TRACE | BACKTRACE_ON_ERROR | REQUEST_TIMER;
16 use constant FILE_TARGET => 0;
17 use constant STDERR_TARGET => 1;
19 use POSIX qw(strftime getppid);
20 use Time::HiRes qw(gettimeofday tv_interval);
25 my ($data_dumper_available, $text_diff_available);
32 eval("use Data::Dumper");
33 $data_dumper_available = $@ ? 0 : 1;
43 _init_globals_from_config();
45 $self->{"calldepth"} = 0;
46 $self->{"file"} = $file_name || "/tmp/lx-office-debug.log";
47 $self->{"target"} = FILE_TARGET;
51 $self->{ $_[0] } = $_[1];
59 my $globals_inited_from_config;
60 sub _init_globals_from_config {
61 return if $globals_inited_from_config;
62 $globals_inited_from_config = 1;
64 my $cfg = $::lx_office_conf{debug} || {};
66 $global_level = NONE() if $cfg->{global_level} =~ /NONE/;
67 foreach my $level (grep { $_} split(m/\s+/, $cfg->{global_level})) {
68 $global_level |= eval "${level}()";
71 $watch_form = $cfg->{watch_form};
72 $file_name = $cfg->{file_name} || "/tmp/lx-office-debug.log";
76 my ($self, $target, $file) = @_;
78 if ((FILE_TARGET == $target) && $file) {
79 $self->{"file"} = $file;
80 $self->{"target"} = FILE_TARGET;
82 } elsif (STDERR_TARGET == $target) {
83 $self->{"target"} = STDERR_TARGET;
89 my $level = shift || 0;
91 return 1 unless ($global_level & TRACE); # ignore if traces aren't active
92 return 1 if $level && !($global_level & TRACE2); # ignore if level of trace isn't active
94 my ($package, $filename, $line, $subroutine) = caller(1);
95 my ($dummy1, $self_filename, $self_line) = caller(0);
97 my $indent = " " x $self->{"calldepth"}++;
98 my $time = $self->get_request_time || '';
100 if (!defined($package)) {
101 $self->_write('sub' . $level, $indent . "\\ $time top-level?\n");
103 $self->_write('sub' . $level, $indent
104 . "\\ $time ${subroutine} in "
105 . "${self_filename}:${self_line} called from "
106 . "${filename}:${line}\n");
113 my $level = shift || 0;
115 return 1 unless ($global_level & TRACE); # ignore if traces aren't active
116 return 1 if $level && !($global_level & TRACE2); # ignore if level of trace isn't active
118 my ($package, $filename, $line, $subroutine) = caller(1);
119 my ($dummy1, $self_filename, $self_line) = caller(0);
121 my $indent = " " x --$self->{"calldepth"};
122 my $time = $self->want_request_timer ? $self->get_request_time || '' : '';
124 if (!defined($package)) {
125 $self->_write('sub' . $level, $indent . "/ $time top-level?\n");
127 $self->_write('sub' . $level, $indent . "/ $time ${subroutine} in " . "${self_filename}:${self_line}\n");
133 my ($self, $force) = @_;
135 return 1 unless ($force || ($global_level & BACKTRACE_ON_ERROR));
137 $self->message(BACKTRACE_ON_ERROR, "Starting full caller dump:");
139 while (my ($dummy, $filename, $line, $subroutine) = caller $level) {
140 $self->message(BACKTRACE_ON_ERROR, " ${subroutine} from ${filename}:${line}");
149 my ($self, $level, $message) = @_;
151 $self->_write(level2string($level), $message) if (($self->{"level"} | $global_level) & $level || !$level);
155 my ($self, $message) = @_;
156 $self->message(WARN, $message);
160 my ($self, $level, $name, $variable, %options) = @_;
162 if ($data_dumper_available) {
164 if ($variable && ('Form' eq ref $variable) && defined $variable->{password}) {
165 $password = $variable->{password};
166 $variable->{password} = 'X' x 8;
169 my $dumper = Data::Dumper->new([$variable]);
170 $dumper->Sortkeys(1);
172 $dumper->$_($options{$_}) for keys %options;
173 my $output = $dumper->Dump();
174 $self->message($level, "dumping ${name}:\n" . $output);
176 $variable->{password} = $password if (defined $password);
178 # Data::Dumper does not reset the iterator belonging to this hash
179 # if 'Sortkeys' is true. Therefore clear the iterator manually.
180 # See "perldoc -f each".
181 if ($variable && (('HASH' eq ref $variable) || ('Form' eq ref $variable))) {
188 $self->message($level,
189 "dumping ${name}: Data::Dumper not available; "
190 . "variable cannot be dumped");
197 my ($self, $level, $name, $variable) = @_;
199 $self->message($level, "dumping ${name}:\n" . YAML::Dump($variable));
202 sub dump_sql_result {
203 my ($self, $level, $prefix, $results) = @_;
205 if (!$results || !scalar @{ $results }) {
206 $self->message($level, "Empty result set");
210 my %column_lengths = map { $_, length $_ } keys %{ $results->[0] };
212 foreach my $row (@{ $results }) {
213 map { $column_lengths{$_} = length $row->{$_} if (length $row->{$_} > $column_lengths{$_}) } keys %{ $row };
216 my @sorted_names = sort keys %column_lengths;
217 my $format = join '|', map { '%' . $column_lengths{$_} . 's' } @sorted_names;
219 $prefix .= ' ' if $prefix;
221 $self->message($level, $prefix . sprintf($format, @sorted_names));
222 $self->message($level, $prefix . join('+', map { '-' x $column_lengths{$_} } @sorted_names));
224 foreach my $row (@{ $results }) {
225 $self->message($level, $prefix . sprintf($format, map { $row->{$_} } @sorted_names));
227 $self->message($level, $prefix . sprintf('(%d row%s)', scalar @{ $results }, scalar @{ $results } > 1 ? 's' : ''));
231 my ($self, $level, $item1, $item2, %params) = @_;
233 if (!$self->_load_text_diff) {
234 $self->warn("Perl module Text::Diff is not available");
238 my @texts = map { ref $_ ? YAML::Dump($_) : $_ } ($item1, $item2);
240 $self->message($level, Text::Diff::diff(\$texts[0], \$texts[1], \%params));
243 sub _load_text_diff {
244 $text_diff_available = eval("use Text::Diff (); 1;") ? 1 : 0 unless defined $text_diff_available;
245 return $text_diff_available;
248 sub enable_sub_tracing {
250 $global_level |= TRACE;
253 sub disable_sub_tracing {
255 $global_level &= ~ TRACE;
258 sub is_tracing_enabled {
260 return $global_level & TRACE;
265 my ($self, $prefix, $message) = @_;
266 my $date = strftime("%Y-%m-%d %H:%M:%S $$ [" . getppid() . "] ${prefix}: ", localtime(time()));
271 if ((FILE_TARGET == $self->{"target"})
272 && open(FILE, ">>", $self->{"file"})) {
273 print(FILE "${date}${message}\n");
276 } elsif (STDERR_TARGET == $self->{"target"}) {
277 print(STDERR "${date}${message}\n");
283 # use $_[0] as a bit mask and return levelstrings separated by /
284 join '/', qw(info debug1 debug2 query trace error_call_trace request_timer WARNING)[ grep { (reverse split //, sprintf "%08b", $_[0])[$_] } 0..7 ]
289 return 1 unless want_request_timer();
290 $self->set_request_timer;
295 return 1 unless want_request_timer();
296 $self->_write("time", $self->get_request_time);
298 $self->{calldepth} = 0;
302 my ($self, @slurp) = @_;
303 return 1 unless want_request_timer();
304 $self->_write("time", $self->get_request_time() . (@slurp ? " (@slurp)" : ''));
307 sub get_request_time {
309 return $self->want_request_timer && $self->{request_start} ? tv_interval($self->{request_start}) : undef;
312 sub set_request_timer {
314 $self->{request_start} = [gettimeofday];
317 sub want_request_timer {
318 $global_level & REQUEST_TIMER;
322 @_ == 2 ? $_[0]->{file} = $_[1] : $_[0]->{file};
326 my ($self, $level) = @_;
327 my $meth = $self->can(uc $level);
328 die 'unknown level' unless $meth;
333 my ($self, $level, $val) = @_;
335 $global_level |= $self->_by_name($level) if $val;
336 $global_level &= ~$self->_by_name($level) if !$val;
338 return $global_level & $self->_by_name($level);
350 LXDebug - kivitendo debugging facilities
354 This module provides functions for debugging kivitendo. An instance is
355 always created as the global variable C<$::lxdebug> at the earliest
358 Debugging is mostly logging of information. Each log function has a
359 I<level> and an I<object> to be logged. The configuration file as well
360 as this module's functions determine which levels get logged, and
361 which file they're logged to.
365 The available log levels are:
371 Always output the message regardless of the active levels. Only use
376 Informational, not an error, more important than C<DEBUG1>.
380 Important debugging information.
384 Less important debugging information that occurs often and spams the
389 Log all queries executed by the L<SL::DBUtils> utility methods.
393 Log sub calls and exits via the L<enter_sub>/L<leave_sub> functions,
394 but only if they're called with a log level that is falsish
395 (e.g. none, C<undef>, 0).
399 Log sub calls and exits via the L<enter_sub>/L<leave_sub> functions
400 even if they're called with a log level of 2. Will only have an effect
401 if C<TRACE> is set as well.
403 =item C<BACKTRACE_ON_ERROR>
405 Log a stack trace when an error is output.
407 =item C<REQUEST_TIMER>
409 Log each request's total execution time when it finishes.
421 Shortcut for C<INFO | QUERY | TRACE | BACKTRACE_ON_ERROR | REQUEST_TIMER>.
427 C<SL::LXDebug> gets its configuration from the C<[debug]> section of
428 the C<config/kivitendo.conf> configuration file. The available options
433 =item C<global_level>
435 A string of log level names that should be activated by
436 default. Multiple log levels are separated by C<|>.
440 A boolean (C<1> or C<0>). Turns on the C<$::form> watch facility. If
441 this is enabled then any key inside C<$::form> can be monitored for
442 changes. For example:
444 # Start watching 'action'
445 $::form->{"Watchdog::action"} = 1;
446 # Stop watching 'invtotal'
447 $::form->{"Watchdog::invtotal"} = 0;
449 A log message is written when the watchdog is enabled for a variable
450 and for each subsequent change. The log message includes the place
451 (file name and line number) of the instruction changing the key.
453 Note that this entails a performance penalty. Also only the keys
454 themselves are monitored -- not the references they point to. E.g. the
455 following would not trigger a change:
457 $::form->{"Watchdog::some_hash"} = 1;
459 $::form->{some_hash}->{some_value} = 42;
461 $::form->{some_hash} = { something => 'else' };
463 =item C<keep_temp_files>
465 A boolean (C<1> or C<0>). If turned on then certain temporary files
466 are not removed but kept in the C<users> directory. These include the
467 temporary files used during printing, e.g. LaTeX files.
471 The path and file name of the debug log file. Must be a location
472 writeable by the web server process.
480 =item C<enter_sub [$level]>
482 =item C<leave_sub [$level]>
484 Pairs of these can be put near the beginning/end of a sub. They'll
485 cause a trace to be written to the log file if the C<TRACE> level is
488 If C<$level> is given then the log messages will only be logged if the
489 global log level C<TRACE2> is active as well.
491 =item C<enable_sub_tracing>
493 =item C<disable_sub_tracing>
495 Enables/disables sub tracing with L<enter_sub>/L<leave_sub> temporarily.
497 =item C<is_tracing_enabled>
499 Returns whether or not the C<TRACE> debug level is active.
501 =item C<show_backtrace [$force]>
503 Logs a stack backtrace if C<$force> is trueish or if the log level
504 C<BACKTRACE_ON_ERROR> is active.
506 =item C<message $level, $message>
508 Logs the message C<$message> if the log level C<$level> is active. The
509 message will be prefixed with a word describing the log level.
511 =item C<warn $message>
513 Equivalent to C<message WARN(), $message>.
515 =item C<dump $level, $name, $variable>
517 Logs a message that the variable named C<$name> is dumped along with a
518 dump of the variable C<$variable> created by the L<Data::Dumper>
519 module. Will log a warning if said module is not available. Will only
520 log if the log level C<$level> is active.
522 =item C<dump_yaml $level, $name, $variable>
524 Logs a message that the variable named C<$name> is dumped along with a
525 dump of the variable C<$variable> created by the C<YAML> module. Will
526 only log if the log level C<$level> is active.
528 =item C<dump_sql $level, $prefix, $results>
530 Dumps the result of an SQL query in tabular form. Will only log if the
531 log level C<$level> is active.
533 =item C<show_diff $level, $item1, $item2, %params>
535 Logs a unified diff of the textual representations of C<$item1> and
536 C<$item2>. Requires the module L<Text::Diff> and logs a warning if
537 said module is not available.
539 C<$item1> and C<$item2> are dumped via L<YAML::Dumper> before diffing
540 if they're non-scalars.
542 Will only log if the log level C<$level> is active.
544 =item C<begin_request>
550 =item C<set_request_timer>
552 =item C<want_request_timer>
554 Internal functions used to log the current request's exeuction time
555 (log level C<REQUEST_TIMER>).
557 =item C<get_request_time>
559 Returns the current request's elapsed execution time in seconds.
561 =item C<file [$file_name]>
563 Sets and/or returns the file name this instance logs to.
565 =item C<level_by_name $level[, $val]>
567 Returns if a log level C<$level> is active. C<$level> is a string
568 representation, not one of the level constants from above.
570 If C<$val> is given then said level will be turned on (if C<$val> is
571 trueish) or off (if C<$val> is falsish).
581 Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>,
582 Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>