| … | |
… | |
| 864 | the logging (which consists of formatting the message and printing it or |
864 | the logging (which consists of formatting the message and printing it or |
| 865 | whatever it wants to do with it). |
865 | whatever it wants to do with it). |
| 866 | |
866 | |
| 867 | =over 4 |
867 | =over 4 |
| 868 | |
868 | |
| 869 | =item $ctx->log_cb ($cb->($str) |
869 | =item $ctx->log_cb ($cb->($str)) |
| 870 | |
870 | |
| 871 | Replaces the logging callback on the context (C<undef> disables the |
871 | Replaces the logging callback on the context (C<undef> disables the |
| 872 | logging callback). |
872 | logging callback). |
| 873 | |
873 | |
| 874 | The logging callback is responsible for handling formatted log messages |
874 | The logging callback is responsible for handling formatted log messages |
| … | |
… | |
| 940 | Sets the C<log_cb> to simply use C<CORE::warn> to report any messages |
940 | Sets the C<log_cb> to simply use C<CORE::warn> to report any messages |
| 941 | (usually this logs to STDERR). |
941 | (usually this logs to STDERR). |
| 942 | |
942 | |
| 943 | =item $ctx->log_to_file ($path) |
943 | =item $ctx->log_to_file ($path) |
| 944 | |
944 | |
| 945 | Sets the C<log_cb> to log to a file (by appending), unbuffered. |
945 | Sets the C<log_cb> to log to a file (by appending), unbuffered. The |
|
|
946 | function might return before the log file has been opened or created. |
| 946 | |
947 | |
| 947 | =item $ctx->log_to_path ($path) |
948 | =item $ctx->log_to_path ($path) |
| 948 | |
949 | |
| 949 | Same as C<< ->log_to_file >>, but opens the file for each message. This |
950 | Same as C<< ->log_to_file >>, but opens the file for each message. This |
| 950 | is much slower, but allows you to change/move/rename/delete the file at |
951 | is much slower, but allows you to change/move/rename/delete the file at |
| … | |
… | |
| 985 | warn shift; |
986 | warn shift; |
| 986 | 0 |
987 | 0 |
| 987 | }); |
988 | }); |
| 988 | } |
989 | } |
| 989 | |
990 | |
|
|
991 | # this function is a good example of why threads are a must, |
|
|
992 | # simply for priority inversion. |
|
|
993 | sub _log_to_disk { |
|
|
994 | # eval'uating this at runtime saves 220kb rss - perl has become |
|
|
995 | # an insane memory waster. |
|
|
996 | eval q{ # poor man's autoloading {} |
|
|
997 | sub _log_to_disk { |
|
|
998 | my ($ctx, $path, $keepopen) = @_; |
|
|
999 | |
|
|
1000 | my $fh; |
|
|
1001 | my @queue; |
|
|
1002 | my $delay; |
|
|
1003 | my $disable; |
|
|
1004 | |
|
|
1005 | use AnyEvent::IO (); |
|
|
1006 | |
|
|
1007 | my $kick = sub { |
|
|
1008 | undef $delay; |
|
|
1009 | return unless @queue; |
|
|
1010 | $delay = 1; |
|
|
1011 | |
|
|
1012 | # we pass $kick to $kick, so $kick itself doesn't keep a reference to $kick. |
|
|
1013 | my $kick = shift; |
|
|
1014 | |
|
|
1015 | # write one or more messages |
|
|
1016 | my $write = sub { |
|
|
1017 | # we write as many messages as have been queued |
|
|
1018 | my $data = join "", @queue; |
|
|
1019 | @queue = (); |
|
|
1020 | |
|
|
1021 | AnyEvent::IO::ae_write $fh, $data, sub { |
|
|
1022 | $disable = 1; |
|
|
1023 | @_ |
|
|
1024 | ? ($_[0] == length $data or AE::log 4 => "unable to write to logfile '$path': short write") |
|
|
1025 | : AE::log 4 => "unable to write to logfile '$path': $!"; |
|
|
1026 | undef $disable; |
|
|
1027 | |
|
|
1028 | if ($keepopen) { |
|
|
1029 | $kick->($kick); |
|
|
1030 | } else { |
|
|
1031 | AnyEvent::IO::ae_close ($fh, sub { |
|
|
1032 | undef $fh; |
|
|
1033 | $kick->($kick); |
|
|
1034 | }); |
|
|
1035 | } |
|
|
1036 | }; |
|
|
1037 | }; |
|
|
1038 | |
|
|
1039 | if ($fh) { |
|
|
1040 | $write->(); |
|
|
1041 | } else { |
|
|
1042 | AnyEvent::IO::ae_open |
|
|
1043 | $path, |
|
|
1044 | AnyEvent::IO::O_CREAT | AnyEvent::IO::O_WRONLY | AnyEvent::IO::O_APPEND, |
|
|
1045 | 0666, |
|
|
1046 | sub { |
|
|
1047 | $fh = shift |
|
|
1048 | or do { |
|
|
1049 | $disable = 1; |
|
|
1050 | AE::log 4 => "unable to open logfile '$path': $!"; |
|
|
1051 | undef $disable; |
|
|
1052 | return; |
|
|
1053 | }; |
|
|
1054 | |
|
|
1055 | $write->(); |
|
|
1056 | } |
|
|
1057 | ; |
|
|
1058 | } |
|
|
1059 | }; |
|
|
1060 | |
|
|
1061 | $ctx->log_cb (sub { |
|
|
1062 | return if $disable; |
|
|
1063 | push @queue, shift; |
|
|
1064 | $kick->($kick) unless $delay; |
|
|
1065 | 0 |
|
|
1066 | }); |
|
|
1067 | |
|
|
1068 | $kick->($kick) if $keepopen; # initial open |
|
|
1069 | }; |
|
|
1070 | }; |
|
|
1071 | die if $@; |
|
|
1072 | &_log_to_disk |
|
|
1073 | } |
|
|
1074 | |
| 990 | sub log_to_file { |
1075 | sub log_to_file { |
| 991 | my ($ctx, $path) = @_; |
1076 | my ($ctx, $path) = @_; |
| 992 | |
1077 | |
| 993 | open my $fh, ">>", $path |
1078 | _log_to_disk $ctx, $path, 1; |
| 994 | or die "$path: $!"; |
|
|
| 995 | |
|
|
| 996 | $ctx->log_cb (sub { |
|
|
| 997 | syswrite $fh, shift; |
|
|
| 998 | 0 |
|
|
| 999 | }); |
|
|
| 1000 | } |
1079 | } |
| 1001 | |
1080 | |
| 1002 | sub log_to_path { |
1081 | sub log_to_path { |
| 1003 | my ($ctx, $path) = @_; |
1082 | my ($ctx, $path) = @_; |
| 1004 | |
1083 | |
| 1005 | $ctx->log_cb (sub { |
1084 | _log_to_disk $ctx, $path, 0; |
| 1006 | open my $fh, ">>", $path |
|
|
| 1007 | or die "$path: $!"; |
|
|
| 1008 | |
|
|
| 1009 | syswrite $fh, shift; |
|
|
| 1010 | 0 |
|
|
| 1011 | }); |
|
|
| 1012 | } |
1085 | } |
| 1013 | |
1086 | |
| 1014 | sub log_to_syslog { |
1087 | sub log_to_syslog { |
| 1015 | my ($ctx, $facility) = @_; |
1088 | my ($ctx, $facility) = @_; |
| 1016 | |
1089 | |
