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 num_minmax);
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');
26 my $self = fields::new($class);
31 $self->created_at(time) unless $self->created_at;
37 my ($self, $key, $value) = @_;
39 meta_select => 'SELECT val FROM meta WHERE key = ? LIMIT 1',
40 meta_update => 'UPDATE meta SET val = ? WHERE key = ? LIMIT 1',
41 meta_insert => 'INSERT INTO meta (key,val) VALUES (?,?)',
44 my $dbh = $self->{dbh};
47 return $dbh->selectrow_array(meta_select, undef, $key);
51 $prev = $dbh->selectrow_array(meta_select, undef, $key);
54 $dbh->do(meta_update, undef, $value, $key);
56 $dbh->do(meta_insert, undef, $key, $value);
61 return $prev unless $err;
68 my ($self, $commit) = @_;
69 $self->meta_accessor('last_commit', $commit);
73 my ($self, $second) = @_;
74 $self->meta_accessor('created_at', $second);
78 my ($self, $mid) = @_;
79 my $dbh = $self->{dbh};
80 use constant MID_INSERT => 'INSERT INTO msgmap (mid) VALUES (?)';
81 my $sth = $self->{mid_insert} ||= $dbh->prepare(MID_INSERT);
82 $sth->bind_param(1, $mid);
84 $dbh->last_insert_id(undef, undef, 'msgmap', 'num');
88 my ($self, $num) = @_;
89 my $dbh = $self->{dbh};
90 use constant MID_FOR => 'SELECT mid FROM msgmap WHERE num = ? LIMIT 1';
91 my $sth = $self->{mid_for} ||= $dbh->prepare(MID_FOR);
92 $sth->bind_param(1, $num);
98 my ($self, $mid) = @_;
99 my $dbh = $self->{dbh};
100 use constant NUM_FOR => 'SELECT num FROM msgmap WHERE mid = ? LIMIT 1';
101 my $sth = $self->{num_for} ||= $dbh->prepare(NUM_FOR);
102 $sth->bind_param(1, $mid);
104 $sth->fetchrow_array;
109 my $dbh = $self->{dbh};
110 use constant NUM_MINMAX => 'SELECT MIN(num),MAX(num) FROM msgmap';
111 my $sth = $self->{num_minmax} ||= $dbh->prepare(NUM_MINMAX);
113 $sth->fetchrow_array;
117 my ($self, $pfx, $limit) = @_;
119 die "No prefix given" unless (defined $pfx && $pfx ne '');
120 $pfx =~ s/([%_])/\\$1/g;
124 $limit += 0; # force to integer
127 $self->{dbh}->selectcol_arrayref('SELECT mid FROM msgmap ' .
128 'WHERE mid LIKE ? ESCAPE ? ' .
129 "ORDER BY num DESC LIMIT $limit",
134 my ($self, $mid) = @_;
135 my $dbh = $self->{dbh};
136 use constant MID_DELETE => 'DELETE FROM msgmap WHERE mid = ?';
137 my $sth = $dbh->prepare(MID_DELETE);
138 $sth->bind_param(1, $mid);
146 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM msgmap;') };
147 defined $e or $dbh->do('CREATE TABLE msgmap (' .
148 'num INTEGER PRIMARY KEY AUTOINCREMENT, '.
149 'mid VARCHAR(1000) NOT NULL, ' .
152 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM meta') };
153 defined $e or $dbh->do('CREATE TABLE meta (' .
154 'key VARCHAR(32) PRIMARY KEY, '.
155 'val VARCHAR(255) NOT NULL)');
159 my ($self, $num, $cb) = @_;
160 my $dbh = $self->{dbh};
161 my $sth = $dbh->prepare('SELECT num FROM msgmap WHERE num > ? '.
162 'ORDER BY num ASC LIMIT 1000');
164 my $ary = $sth->fetchall_arrayref;
165 @$ary = map { $_->[0] } @$ary;
166 my $nr = scalar @$ary;