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;
7 use fields qw(dbh mid_insert mid_for num_for);
12 my ($class, $git_dir, $writable) = @_;
13 my $d = "$git_dir/public-inbox";
14 if ($writable && !-d $d && !mkdir $d) {
16 -d $d or die "$d not created: $err";
18 my $f = "$d/msgmap.sqlite3";
19 my $dbh = DBI->connect("dbi:SQLite:dbname=$f",'','', {
23 sqlite_use_immediate_transaction => 1,
25 $dbh->do('PRAGMA case_sensitive_like = ON');
27 $writable and create_tables($dbh);
28 my $self = fields::new($class);
35 my ($self, $commit) = @_;
36 my $dbh = $self->{dbh};
40 meta_select => 'SELECT val FROM meta WHERE key = ? LIMIT 1',
41 meta_update => 'UPDATE meta SET val = ? WHERE key = ? LIMIT 1',
42 meta_insert => 'INSERT INTO meta (key,val) VALUES (?,?)',
46 return $dbh->selectrow_array(meta_select, undef, key);
50 $prev = $dbh->selectrow_array(meta_select, undef, key);
53 $dbh->do(meta_update, undef, $commit, key);
55 $dbh->do(meta_insert, undef, key, $commit);
59 return $prev unless $@;
66 my ($self, $mid) = @_;
67 my $dbh = $self->{dbh};
68 use constant MID_INSERT => 'INSERT INTO msgmap (mid) VALUES (?)';
69 my $sth = $self->{mid_insert} ||= $dbh->prepare(MID_INSERT);
70 $sth->bind_param(1, $mid);
72 $dbh->last_insert_id(undef, undef, 'msgmap', 'num');
75 use constant MID_FOR => 'SELECT mid FROM msgmap WHERE num = ? LIMIT 1';
77 my ($self, $num) = @_;
78 my $dbh = $self->{dbh};
79 my $sth = $self->{mid_for} ||= $dbh->prepare(MID_FOR);
80 $sth->bind_param(1, $num);
86 my ($self, $mid) = @_;
87 my $dbh = $self->{dbh};
88 use constant NUM_FOR => 'SELECT num FROM msgmap WHERE mid = ? LIMIT 1';
89 my $sth = $self->{num_for} ||= $dbh->prepare(NUM_FOR);
90 $sth->bind_param(1, $mid);
96 my ($self, $pfx, $limit) = @_;
98 die "No prefix given" unless (defined $pfx && $pfx ne '');
99 $pfx =~ s/([%_])/\\$1/g;
103 $limit += 0; # force to integer
106 $self->{dbh}->selectcol_arrayref('SELECT mid FROM msgmap ' .
107 'WHERE mid LIKE ? ESCAPE ? ' .
108 "ORDER BY num DESC LIMIT $limit",
113 my ($self, $mid) = @_;
114 my $dbh = $self->{dbh};
115 use constant MID_DELETE => 'DELETE FROM msgmap WHERE mid = ?';
116 my $sth = $dbh->prepare(MID_DELETE);
117 $sth->bind_param(1, $mid);
125 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM msgmap;') };
126 defined $e or $dbh->do('CREATE TABLE msgmap (' .
127 'num INTEGER PRIMARY KEY AUTOINCREMENT, '.
128 'mid VARCHAR(1000) NOT NULL, ' .
131 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM meta') };
132 defined $e or $dbh->do('CREATE TABLE meta (' .
133 'key VARCHAR(32) PRIMARY KEY, '.
134 'val VARCHAR(255) NOT NULL)');