typo
[rersyncrecent.git] / bin / rrr-server
blob4b153af0fb7445b11a50e36a6b6b861fc0d655c9
1 #!/usr/bin/perl -- -*- mode: cperl -*-
3 =head1 NAME
5 rrr-server - watch a tree and continuously update indexfiles
7 =head1 SYNOPSIS
9 rrr-server [options] principalfile
11 =head1 OPTIONS
13 =over 8
15 =cut
17 my @opt = <<'=back' =~ /B<--(\S+)>/g;
19 =item B<--help|h>
21 Prints a brief message and exists.
23 =item B<--verbose|v+>
25 More feedback.
27 =back
29 =head1 DESCRIPTION
31 After you have setup a tree watch it with inotify and keep it
32 uptodate. Depends on inotify which probably only exists on linux.
34 =head1 PREREQUISITE
36 Linux::Inotify2.
38 It is not declared as prerequisites of the F:R:M:Recent package
39 because server side handling is optional. XXX Todo: make server side
40 handling a separate package so we can declare Inotify2 as prereq.
42 =cut
44 use strict;
45 use warnings;
47 use File::Find qw(find);
48 use lib "/home/k/sources/rersyncrecent/lib";
49 use File::Rsync::Mirror::Recent;
50 use File::Spec;
51 use Getopt::Long;
52 use Pod::Usage qw(pod2usage);
53 use Time::HiRes qw(time);
55 our %Opt;
56 GetOptions(\%Opt,
57 @opt,
58 ) or pod2usage(1);
60 if ($Opt{help}) {
61 pod2usage(0);
64 if (@ARGV != 1) {
65 pod2usage(1);
68 my($principal) = @ARGV;
69 my $recc = File::Rsync::Mirror::Recent->new
70 (local => $principal);
71 my($rf) = $recc->principal_recentfile;
72 my $rootdir = $rf->localroot;
73 $rootdir =~ s|/$||;
74 for my $req (qw(Linux::Inotify2 File::Find::Rule)) {
75 eval qq{ require $req; 1 };
76 if ($@) {
77 die "Failing on 'require $req': $@"
78 } else {
79 $req->import;
83 my $inotify = new Linux::Inotify2
84 or die "Unable to create new inotify object: $!";
86 foreach my $directory ( File::Find::Rule->new->directory->in($rootdir) ) {
87 $inotify->watch
89 $directory,
90 IN_CLOSE_WRITE()
91 |IN_MOVED_FROM()
92 |IN_MOVED_TO()
93 |IN_CREATE()
94 |IN_DELETE()
95 |IN_DELETE_SELF()
96 |IN_MOVE_SELF()
98 or die "watch creation failed";
101 sub handle_file {
102 my($rf,$fullname,$type,$batch) = @_;
103 push @$batch, {path => $fullname, type => $type};
106 sub newdir {
107 my($inotify,$rf,$fullname,$batch) = @_;
108 $inotify->watch
110 $fullname,
111 IN_CLOSE_WRITE()
112 |IN_MOVED_FROM()
113 |IN_MOVED_TO()
114 |IN_CREATE()
115 |IN_DELETE()
116 |IN_DELETE_SELF()
117 |IN_MOVE_SELF()
119 or die "watch creation failed";
120 # immediately inspect it, we certainly have missed the first
121 # events in this directory
122 opendir my $dh, $fullname or return;
123 for my $dirent (readdir $dh) {
124 next if $dirent eq "." || $dirent eq "..";
125 my $abs = File::Spec->catfile($fullname,$dirent);
126 if (-l $abs || -f _) {
127 warn "[..:..:..] Readdir_F $abs\n";
128 handle_file($rf,$abs,"new",$batch);
129 } elsif (-d $abs) {
130 warn "[..:..:..] Readdir_D $abs\n";
131 newdir($inotify,$rf,$abs,$batch);
136 my $last_aggregate_call = 0;
137 my $requires_fsck = 1;
138 my $have_warned_fsck = 0;
140 sub handle_event {
141 my($ev,$batch) = @_;
142 my @stringifiedmask;
143 for my $watch (
144 "IN_CREATE", "IN_CLOSE_WRITE", "IN_MOVED_TO", # new
145 "IN_DELETE", "IN_MOVED_FROM", # delete
146 "IN_DELETE_SELF", "IN_MOVE_SELF", # self
148 if ($ev->$watch()){
149 push @stringifiedmask, $watch;
150 # new directories must be added to the watches, deleted
151 # directories deleted; moved directories both
154 # warn sprintf "rootdir[$rootdir]time[%s]ev.w.name[%s]ev.name[%s]ev.fullname[%s]mask[%s]\n", time, $ev->w->name, $ev->name, $ev->fullname, join("|",@stringifiedmask);
155 my $ignore = 0;
156 if ($ev->w->name eq $rootdir) {
157 my $meta = $rf->meta_data;
158 my $ignore_rx = qr((?x: ^ \Q$meta->{filenameroot}\E - [0-9]*[smhdWMQYZ] \Q$meta->{serializer_suffix}\E ));
159 if ($ev->name =~ $ignore_rx) {
160 # warn sprintf "==> Ignoring object in rootdir looking like internal file: %s", $ev->name;
161 $ignore++;
164 unless ($ignore) {
165 my $fullname = $ev->fullname;
166 my($reportname) = $fullname =~ m{^\Q$rootdir\E/(.*)};
167 my $time = sprintf "%02d:%02d:%02d", (localtime)[2,1,0];
168 if (0) {
169 } elsif ($ev->IN_Q_OVERFLOW) {
170 $requires_fsck = 1;
171 } elsif ($ev->IN_DELETE || $ev->IN_MOVED_FROM) {
172 # we don't know whether it was a directory, we simply pass
173 # it to $rf. $rf must be robust enough to swallow bogus
174 # deletes. Alternatively we could look into $rf whether
175 # this object is known, couldn't we?
176 handle_file($rf,$fullname,"delete",$batch);
177 warn "[$time] Deleteobj $reportname (@stringifiedmask)\n";
178 } elsif ($ev->IN_DELETE_SELF || $ev->IN_MOVE_SELF) {
179 $ev->w->cancel;
180 warn "[$time] Delwatcher $reportname (@stringifiedmask)\n";
181 } elsif ($ev->IN_ISDIR) {
182 newdir($inotify,$rf,$fullname,$batch);
183 warn "[$time] Newwatcher $reportname (@stringifiedmask)\n";
184 } elsif (-l $fullname) {
185 handle_file($rf,$fullname,"new",$batch);
186 warn "[$time] Updatelink $reportname (@stringifiedmask)\n";
187 } elsif (-f _) {
188 if ($ev->IN_CLOSE_WRITE || $ev->IN_MOVED_TO) {
189 handle_file($rf,$fullname,"new",$batch);
190 warn "[$time] Updatefile $reportname (@stringifiedmask)\n";
192 } else {
193 warn "[$time] Ignore $reportname (@stringifiedmask)\n";
196 if (time > $last_aggregate_call + $rf->interval_secs) {
197 $rf->aggregate;
198 $last_aggregate_call = time;
202 while () {
203 my @events = $inotify->read;
204 unless ( @events > 0 ) {
205 print "Alert: inotify read error: $!";
206 last;
208 my @batch;
209 foreach my $event (@events) {
210 handle_event($event,\@batch);
212 $rf->batch_update(\@batch);
213 if ($requires_fsck) {
214 if (time > $have_warned_fsck + 3600) {
215 warn "REMINDER: TODO: HANDLE FSCK";
216 $have_warned_fsck = time;
221 __END__
224 # Local Variables:
225 # mode: cperl
226 # coding: utf-8
227 # cperl-indent-level: 4
228 # End: