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 sqlite_use_immediate_transaction => 1,
24 $dbh->do('PRAGMA case_sensitive_like = ON');
25 my $self = bless { dbh => $dbh }, $class;
29 $self->created_at(time) unless $self->created_at;
35 my ($self, $key, $value) = @_;
37 meta_select => 'SELECT val FROM meta WHERE key = ? LIMIT 1',
38 meta_update => 'UPDATE meta SET val = ? WHERE key = ? LIMIT 1',
39 meta_insert => 'INSERT INTO meta (key,val) VALUES (?,?)',
42 my $dbh = $self->{dbh};
45 return $dbh->selectrow_array(meta_select, undef, $key);
49 $prev = $dbh->selectrow_array(meta_select, undef, $key);
52 $dbh->do(meta_update, undef, $value, $key);
54 $dbh->do(meta_insert, undef, $key, $value);
59 return $prev unless $err;
66 my ($self, $commit) = @_;
67 $self->meta_accessor('last_commit', $commit);
71 my ($self, $second) = @_;
72 $self->meta_accessor('created_at', $second);
76 my ($self, $mid) = @_;
77 my $dbh = $self->{dbh};
78 use constant MID_INSERT => 'INSERT INTO msgmap (mid) VALUES (?)';
79 my $sth = $self->{mid_insert} ||= $dbh->prepare(MID_INSERT);
80 $sth->bind_param(1, $mid);
82 $dbh->last_insert_id(undef, undef, 'msgmap', 'num');
86 my ($self, $num) = @_;
87 my $dbh = $self->{dbh};
88 use constant MID_FOR => 'SELECT mid FROM msgmap WHERE num = ? LIMIT 1';
89 my $sth = $self->{mid_for} ||= $dbh->prepare(MID_FOR);
90 $sth->bind_param(1, $num);
96 my ($self, $mid) = @_;
97 my $dbh = $self->{dbh};
98 use constant NUM_FOR => 'SELECT num FROM msgmap WHERE mid = ? LIMIT 1';
99 my $sth = $self->{num_for} ||= $dbh->prepare(NUM_FOR);
100 $sth->bind_param(1, $mid);
102 $sth->fetchrow_array;
107 my $dbh = $self->{dbh};
108 use constant NUM_MINMAX => 'SELECT MIN(num),MAX(num) FROM msgmap';
109 my $sth = $self->{num_minmax} ||= $dbh->prepare(NUM_MINMAX);
111 $sth->fetchrow_array;
115 my ($self, $pfx, $limit) = @_;
117 die "No prefix given" unless (defined $pfx && $pfx ne '');
118 $pfx =~ s/([%_])/\\$1/g;
122 $limit += 0; # force to integer
125 $self->{dbh}->selectcol_arrayref('SELECT mid FROM msgmap ' .
126 'WHERE mid LIKE ? ESCAPE ? ' .
127 "ORDER BY num DESC LIMIT $limit",
132 my ($self, $mid) = @_;
133 my $dbh = $self->{dbh};
134 use constant MID_DELETE => 'DELETE FROM msgmap WHERE mid = ?';
135 my $sth = $dbh->prepare(MID_DELETE);
136 $sth->bind_param(1, $mid);
144 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM msgmap;') };
145 defined $e or $dbh->do('CREATE TABLE msgmap (' .
146 'num INTEGER PRIMARY KEY AUTOINCREMENT, '.
147 'mid VARCHAR(1000) NOT NULL, ' .
150 $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM meta') };
151 defined $e or $dbh->do('CREATE TABLE meta (' .
152 'key VARCHAR(32) PRIMARY KEY, '.
153 'val VARCHAR(255) NOT NULL)');
157 my ($self, $num, $cb) = @_;
158 my $dbh = $self->{dbh};
159 my $sth = $dbh->prepare('SELECT num FROM msgmap WHERE num > ? '.
160 'ORDER BY num ASC LIMIT 1000');
162 my $ary = $sth->fetchall_arrayref;
163 @$ary = map { $_->[0] } @$ary;
164 my $nr = scalar @$ary;