# numbers for NNTP and allows prefix lookups for partial Message-IDs
# in case URLs get truncated from copy-n-paste errors by users.
#
-# This is maintained by ::SearchIdx
+# This is maintained by ::SearchIdx (v1) and ::V2Writable (v2)
package PublicInbox::Msgmap;
use strict;
-use warnings;
+use v5.10.1;
use DBI;
use DBD::SQLite;
-use File::Temp qw(tempfile);
use PublicInbox::Over;
+use PublicInbox::Spawn;
sub new {
my ($class, $git_dir, $writable) = @_;
my $self = bless { filename => $f }, $class;
my $dbh = $self->{dbh} = PublicInbox::Over::dbh_new($self, $rw);
if ($rw) {
- # TRUNCATE reduces I/O compared to the default (DELETE)
- $dbh->do('PRAGMA journal_mode = TRUNCATE');
-
$dbh->begin_work;
create_tables($dbh);
$self->created_at(time) unless $self->created_at;
# used to keep track of used numeric mappings for v2 reindex
sub tmp_clone {
my ($self, $dir) = @_;
- my ($fh, $fn) = tempfile('msgmap-XXXXXXXX', EXLOCK => 0, DIR => $dir);
- my $tmp;
- if ($self->{dbh}->can('sqlite_backup_to_dbh')) {
- $tmp = ref($self)->new_file($fn, 2);
- $tmp->{dbh}->do('PRAGMA journal_mode = MEMORY');
- $self->{dbh}->sqlite_backup_to_dbh($tmp->{dbh});
- } else { # DBD::SQLite <= 1.61_01
- $self->{dbh}->sqlite_backup_to_file($fn);
- $tmp = ref($self)->new_file($fn, 2);
- $tmp->{dbh}->do('PRAGMA journal_mode = MEMORY');
- }
+ require File::Temp;
+ my $tmp = "mm_tmp-$$-XXXXXX";
+ my ($fh, $fn) = File::Temp::tempfile($tmp, EXLOCK => 0, DIR => $dir);
+ PublicInbox::Spawn::nodatacow_fd(fileno($fh));
+ $self->{dbh}->sqlite_backup_to_file($fn);
+ $tmp = ref($self)->new_file($fn, 2);
+ $tmp->{dbh}->do('PRAGMA journal_mode = MEMORY');
$tmp->{pid} = $$;
$tmp;
}
$self->meta_accessor("last_xap$version-$i", $commit);
}
+# this is the UIDVALIDITY for IMAP (cf. RFC 3501 sec 2.3.1.1. item 3)
sub created_at {
my ($self, $second) = @_;
$self->meta_accessor('created_at', $second);
sub create_tables {
my ($dbh) = @_;
- my $e;
-
- $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM msgmap;') };
- defined $e or $dbh->do('CREATE TABLE msgmap (' .
- 'num INTEGER PRIMARY KEY AUTOINCREMENT, '.
- 'mid VARCHAR(1000) NOT NULL, ' .
- 'UNIQUE (mid) )');
-
- $e = eval { $dbh->selectrow_array('EXPLAIN SELECT * FROM meta') };
- defined $e or $dbh->do('CREATE TABLE meta (' .
- 'key VARCHAR(32) PRIMARY KEY, '.
- 'val VARCHAR(255) NOT NULL)');
+
+ $dbh->do(<<'');
+CREATE TABLE IF NOT EXISTS msgmap (
+ num INTEGER PRIMARY KEY AUTOINCREMENT,
+ mid VARCHAR(1000) NOT NULL,
+ UNIQUE (mid)
+)
+
+ $dbh->do(<<'');
+CREATE TABLE IF NOT EXISTS meta (
+ key VARCHAR(32) PRIMARY KEY,
+ val VARCHAR(255) NOT NULL
+)
+
}
# used by NNTP.pm
$self->{dbh} and die 'BUG: tmp_clone dbh not prepared for parent';
defined($self->{filename}) or die 'BUG: {filename} not defined';
$self->{dbh} = PublicInbox::Over::dbh_new($self, 2);
+ $self->{dbh}->do('PRAGMA journal_mode = MEMORY');
}
sub atfork_prepare {