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, $variable) = @_;
162 if ($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 $self->message($level, "dumping ${name}:\n" . $dumper->Dump());
174 $variable->{password} = $password if (defined $password);
176 # Data::Dumper does not reset the iterator belonging to this hash
177 # if 'Sortkeys' is true. Therefore clear the iterator manually.
178 # See "perldoc -f each".
179 if ($variable && (('HASH' eq ref $variable) || ('Form' eq ref $variable))) {
184 $self->message($level,
185 "dumping ${name}: Data::Dumper not available; "
186 . "variable cannot be dumped");
191 my ($self, $level, $name, $variable) = @_;
193 $self->message($level, "dumping ${name}:\n" . YAML::Dump($variable));
196 sub dump_sql_result {
197 my ($self, $level, $prefix, $results) = @_;
199 if (!$results || !scalar @{ $results }) {
200 $self->message($level, "Empty result set");
204 my %column_lengths = map { $_, length $_ } keys %{ $results->[0] };
206 foreach my $row (@{ $results }) {
207 map { $column_lengths{$_} = length $row->{$_} if (length $row->{$_} > $column_lengths{$_}) } keys %{ $row };
210 my @sorted_names = sort keys %column_lengths;
211 my $format = join '|', map { '%' . $column_lengths{$_} . 's' } @sorted_names;
213 $prefix .= ' ' if $prefix;
215 $self->message($level, $prefix . sprintf($format, @sorted_names));
216 $self->message($level, $prefix . join('+', map { '-' x $column_lengths{$_} } @sorted_names));
218 foreach my $row (@{ $results }) {
219 $self->message($level, $prefix . sprintf($format, map { $row->{$_} } @sorted_names));
221 $self->message($level, $prefix . sprintf('(%d row%s)', scalar @{ $results }, scalar @{ $results } > 1 ? 's' : ''));
225 my ($self, $level, $item1, $item2, %params) = @_;
227 if (!$self->_load_text_diff) {
228 $self->warn("Perl module Text::Diff is not available");
232 my @texts = map { ref $_ ? YAML::Dump($_) : $_ } ($item1, $item2);
234 $self->message($level, Text::Diff::diff(\$texts[0], \$texts[1], \%params));
237 sub _load_text_diff {
238 $text_diff_available = eval("use Text::Diff (); 1;") ? 1 : 0 unless defined $text_diff_available;
239 return $text_diff_available;
242 sub enable_sub_tracing {
244 $global_level |= TRACE;
247 sub disable_sub_tracing {
249 $global_level &= ~ TRACE;
252 sub is_tracing_enabled {
254 return $global_level & TRACE;
259 my ($self, $prefix, $message) = @_;
260 my $date = strftime("%Y-%m-%d %H:%M:%S $$ [" . getppid() . "] ${prefix}: ", localtime(time()));
265 if ((FILE_TARGET == $self->{"target"})
266 && open(FILE, ">>", $self->{"file"})) {
267 print(FILE "${date}${message}\n");
270 } elsif (STDERR_TARGET == $self->{"target"}) {
271 print(STDERR "${date}${message}\n");
277 # use $_[0] as a bit mask and return levelstrings separated by /
278 join '/', qw(info debug1 debug2 query trace error_call_trace request_timer WARNING)[ grep { (reverse split //, sprintf "%08b", $_[0])[$_] } 0..7 ]
283 return 1 unless want_request_timer();
284 $self->set_request_timer;
289 return 1 unless want_request_timer();
290 $self->_write("time", $self->get_request_time);
292 $self->{calldepth} = 0;
296 my ($self, @slurp) = @_;
297 return 1 unless want_request_timer();
298 $self->_write("time", $self->get_request_time() . (@slurp ? " (@slurp)" : ''));
301 sub get_request_time {
303 return $self->want_request_timer && $self->{request_start} ? tv_interval($self->{request_start}) : undef;
306 sub set_request_timer {
308 $self->{request_start} = [gettimeofday];
311 sub want_request_timer {
312 $global_level & REQUEST_TIMER;
316 @_ == 2 ? $_[0]->{file} = $_[1] : $_[0]->{file};
320 my ($self, $level) = @_;
321 my $meth = $self->can(uc $level);
322 die 'unknown level' unless $meth;
327 my ($self, $level, $val) = @_;
329 $global_level |= $self->_by_name($level) if $val;
330 $global_level &= ~$self->_by_name($level) if !$val;
332 return $global_level & $self->_by_name($level);
344 LXDebug - kivitendo debugging facilities
348 This module provides functions for debugging kivitendo. An instance is
349 always created as the global variable C<$::lxdebug> at the earliest
352 Debugging is mostly logging of information. Each log function has a
353 I<level> and an I<object> to be logged. The configuration file as well
354 as this module's functions determine which levels get logged, and
355 which file they're logged to.
359 The available log levels are:
365 Always output the message regardless of the active levels. Only use
370 Informational, not an error, more important than C<DEBUG1>.
374 Important debugging information.
378 Less important debugging information that occurs often and spams the
383 Log all queries executed by the L<SL::DBUtils> utility methods.
387 Log sub calls and exits via the L<enter_sub>/L<leave_sub> functions,
388 but only if they're called with a log level that is falsish
389 (e.g. none, C<undef>, 0).
393 Log sub calls and exits via the L<enter_sub>/L<leave_sub> functions
394 even if they're called with a log level of 2. Will only have an effect
395 if C<TRACE> is set as well.
397 =item C<BACKTRACE_ON_ERROR>
399 Log a stack trace when an error is output.
401 =item C<REQUEST_TIMER>
403 Log each request's total execution time when it finishes.
415 Shortcut for C<INFO | QUERY | TRACE | BACKTRACE_ON_ERROR | REQUEST_TIMER>.
421 C<SL::LXDebug> gets its configuration from the C<[debug]> section of
422 the C<config/kivitendo.conf> configuration file. The available options
427 =item C<global_level>
429 A string of log level names that should be activated by
430 default. Multiple log levels are separated by C<|>.
434 A boolean (C<1> or C<0>). Turns on the C<$::form> watch facility. If
435 this is enabled then any key inside C<$::form> can be monitored for
436 changes. For example:
438 # Start watching 'action'
439 $::form->{"Watchdog::action"} = 1;
440 # Stop watching 'invtotal'
441 $::form->{"Watchdog::invtotal"} = 0;
443 A log message is written when the watchdog is enabled for a variable
444 and for each subsequent change. The log message includes the place
445 (file name and line number) of the instruction changing the key.
447 Note that this entails a performance penalty. Also only the keys
448 themselves are monitored -- not the references they point to. E.g. the
449 following would not trigger a change:
451 $::form->{"Watchdog::some_hash"} = 1;
453 $::form->{some_hash}->{some_value} = 42;
455 $::form->{some_hash} = { something => 'else' };
457 =item C<keep_temp_files>
459 A boolean (C<1> or C<0>). If turned on then certain temporary files
460 are not removed but kept in the C<users> directory. These include the
461 temporary files used during printing, e.g. LaTeX files.
465 The path and file name of the debug log file. Must be a location
466 writeable by the web server process.
474 =item C<enter_sub [$level]>
476 =item C<leave_sub [$level]>
478 Pairs of these can be put near the beginning/end of a sub. They'll
479 cause a trace to be written to the log file if the C<TRACE> level is
482 If C<$level> is given then the log messages will only be logged if the
483 global log level C<TRACE2> is active as well.
485 =item C<enable_sub_tracing>
487 =item C<disable_sub_tracing>
489 Enables/disables sub tracing with L<enter_sub>/L<leave_sub> temporarily.
491 =item C<is_tracing_enabled>
493 Returns whether or not the C<TRACE> debug level is active.
495 =item C<show_backtrace [$force]>
497 Logs a stack backtrace if C<$force> is trueish or if the log level
498 C<BACKTRACE_ON_ERROR> is active.
500 =item C<message $level, $message>
502 Logs the message C<$message> if the log level C<$level> is active. The
503 message will be prefixed with a word describing the log level.
505 =item C<warn $message>
507 Equivalent to C<message WARN(), $message>.
509 =item C<dump $level, $name, $variable>
511 Logs a message that the variable named C<$name> is dumped along with a
512 dump of the variable C<$variable> created by the L<Data::Dumper>
513 module. Will log a warning if said module is not available. Will only
514 log if the log level C<$level> is active.
516 =item C<dump_yaml $level, $name, $variable>
518 Logs a message that the variable named C<$name> is dumped along with a
519 dump of the variable C<$variable> created by the C<YAML> module. Will
520 only log if the log level C<$level> is active.
522 =item C<dump_sql $level, $prefix, $results>
524 Dumps the result of an SQL query in tabular form. Will only log if the
525 log level C<$level> is active.
527 =item C<show_diff $level, $item1, $item2, %params>
529 Logs a unified diff of the textual representations of C<$item1> and
530 C<$item2>. Requires the module L<Text::Diff> and logs a warning if
531 said module is not available.
533 C<$item1> and C<$item2> are dumped via L<YAML::Dumper> before diffing
534 if they're non-scalars.
536 Will only log if the log level C<$level> is active.
538 =item C<begin_request>
544 =item C<set_request_timer>
546 =item C<want_request_timer>
548 Internal functions used to log the current request's exeuction time
549 (log level C<REQUEST_TIMER>).
551 =item C<get_request_time>
553 Returns the current request's elapsed execution time in seconds.
555 =item C<file [$file_name]>
557 Sets and/or returns the file name this instance logs to.
559 =item C<level_by_name $level[, $val]>
561 Returns if a log level C<$level> is active. C<$level> is a string
562 representation, not one of the level constants from above.
564 If C<$val> is given then said level will be turned on (if C<$val> is
565 trueish) or off (if C<$val> is falsish).
575 Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>,
576 Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>