1 # Copyright (C) 2015 all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
3 # bidirectional Message-ID <-> Article Number mapping
4 package PublicInbox::Msgmap;
11 my ($class, $git_dir, $writable) = @_;
12 my $d = "$git_dir/public-inbox";
13 if ($writable && !-d $d && !mkdir $d) {
15 -d $d or die "$d not created: $err";
17 my $f = "$d/msgmap.sqlite3";
18 my $dbh = DBI->connect("dbi:SQLite:dbname=$f",'','', {
22 ReadOnly => !$writable,
23 sqlite_use_immediate_transaction => 1,
25 $dbh->do('PRAGMA case_sensitive_like = ON');
26 my $self = bless { dbh => $dbh }, $class;
30 $self->created_at(time) unless $self->created_at;
36 my ($self, $key, $value) = @_;
38 meta_select => 'SELECT val FROM meta WHERE key = ? LIMIT 1',
39 meta_update => 'UPDATE meta SET val = ? WHERE key = ? LIMIT 1',
40 meta_insert => 'INSERT INTO meta (key,val) VALUES (?,?)',
43 my $dbh = $self->{dbh};
46 return $dbh->selectrow_array(meta_select, undef, $key);
50 $prev = $dbh->selectrow_array(meta_select, undef, $key);
53 $dbh->do(meta_update, undef, $value, $key);
55 $dbh->do(meta_insert, undef, $key, $value);
60 return $prev unless $err;
67 my ($self, $commit) = @_;
68 $self->meta_accessor('last_commit', $commit);
72 my ($self, $second) = @_;
73 $self->meta_accessor('created_at', $second);
77 my ($self, $mid) = @_;
78 my $dbh = $self->{dbh};
79 use constant MID_INSERT => 'INSERT INTO msgmap (mid) VALUES (?)';
80 my $sth = $self->{mid_insert} ||= $dbh->prepare(MID_INSERT);
81 $sth->bind_param(1, $mid);
83 $dbh->last_insert_id(undef, undef, 'msgmap', 'num');
87 my ($self, $num) = @_;
88 my $dbh = $self->{dbh};
89 use constant MID_FOR => 'SELECT mid FROM msgmap WHERE num = ? LIMIT 1';
90 my $sth = $self->{mid_for} ||= $dbh->prepare(MID_FOR);
91 $sth->bind_param(1, $num);
97 my ($self, $mid) = @_;
98 my $dbh = $self->{dbh};
99 use constant NUM_FOR => 'SELECT num FROM msgmap WHERE mid = ? LIMIT 1';
100 my $sth = $self->{num_for} ||= $dbh->prepare(NUM_FOR);
101 $sth->bind_param(1, $mid);
103 $sth->fetchrow_array;
108 my $dbh = $self->{dbh};
109 use constant NUM_MINMAX => 'SELECT MIN(num),MAX(num) FROM msgmap';
110 my $sth = $self->{num_minmax} ||= $dbh->prepare(NUM_MINMAX);
112 $sth->fetchrow_array;
116 my ($self, $pfx, $limit) = @_;
118 die "No prefix given" unless (defined $pfx && $pfx ne '');
119 $pfx =~ s/([%_])/\\$1/g;
123 $limit += 0; # force to integer
126 $self->{dbh}->selectcol_arrayref('SELECT mid FROM msgmap ' .
127 'WHERE mid LIKE ? ESCAPE ? ' .
128 "ORDER BY num DESC LIMIT $limit",
133 my ($self, $mid) = @_;
134 my $dbh = $self->{dbh};
135 use constant MID_DELETE => 'DELETE FROM msgmap WHERE mid = ?';
136 my $sth = $dbh->prepare(MID_DELETE);
137 $sth->bind_param(1, $mid);
145 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM msgmap;') };
146 defined $e or $dbh->do('CREATE TABLE msgmap (' .
147 'num INTEGER PRIMARY KEY AUTOINCREMENT, '.
148 'mid VARCHAR(1000) NOT NULL, ' .
151 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM meta') };
152 defined $e or $dbh->do('CREATE TABLE meta (' .
153 'key VARCHAR(32) PRIMARY KEY, '.
154 'val VARCHAR(255) NOT NULL)');
158 my ($self, $num, $cb) = @_;
159 my $dbh = $self->{dbh};
160 my $sth = $dbh->prepare('SELECT num FROM msgmap WHERE num > ? '.
161 'ORDER BY num ASC LIMIT 1000');
163 my $ary = $sth->fetchall_arrayref;
164 @$ary = map { $_->[0] } @$ary;
165 my $nr = scalar @$ary;