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| | *The DB part is optional for all but the first and means to continue using the previous database.\n" | | *The DB part is optional for all but the first and means to continue using the previous database.\n" |
| | | | |
| − | == Script == | + | == See also == |
| − | <perl>
| + | *[[replicate-db.pl]] |
| − | #!/usr/bin/perl
| |
| − | # - Licenced under LGPL (http://www.gnu.org/copyleft/lesser.html)
| |
| − | # - Author: http://www.organicdesign.co.nz/nad
| |
| − | # - Started: 2007-08-25
| |
| − | use DBI;
| |
| − | | |
| − | $user = '********';
| |
| − | $pwd = '********';
| |
| − | $tmp = '/tmp/replicate-db';
| |
| − | | |
| − | # Display usage info and die if too few or no parameters supplied
| |
| − | die "\nReplicate a mediawiki SQL database dump to many databases and prefixes.
| |
| − | | |
| − | Usage:
| |
| − | add-db TEMPLATE DB1.PREFIX1 [DB2.]PREFIX2 [DB3.]PREFIX3...
| |
| − | Where,
| |
| − | TEMPLATE is the name of the *.sql file or db.prefix to use as the templa
| |
| − | te.
| |
| − | | |
| − | DB*.PREFIX* are the databases to replicate the template into and the tab
| |
| − | le prefixes to use (prefixes are mandatory).
| |
| − | | |
| − | Notes:
| |
| − | - The database dump being used as a template should only contain one wiki. | |
| − | - It should not include create or drop database statements.
| |
| − | - The destination databases must already exist
| |
| − | - The destination tables will be replaced if they exist
| |
| − | - The DB part is optional for all but the first and means to continue using the previous database.\n"
| |
| − | unless $#ARGV > 0 and $ARGV[1] =~ /^\w+\.\w+$/;
| |
| − | | |
| − | # Read in the template SQL
| |
| − | $prefix = '';
| |
| − | $template = shift @ARGV;
| |
| − | if ($template !~ /\.sql$/i) {
| |
| − | | |
| − | # Template is a database, so needs to be exported to tmp file first
| |
| − | $template =~ /^(\w+)\.(\w+)$/;
| |
| − | ($db,$prefix) = ($1,qr($2));
| |
| − | $dbh = DBI->connect("dbi:mysql:$db",$user,$pwd)
| |
| − | or die "\nCan't connect to database '$db': ",$DBI::errstr,"\n";
| |
| − | | |
| − | # Obtain list of tables with selected prefix
| |
| − | @tbl = ();
| |
| − | $sth = $dbh->prepare('SHOW TABLES');
| |
| − | $sth->execute() or die "\nCould not select tables: ",$DBI::errstr,"\n";
| |
| − | while (@data = $sth->fetchrow_array()) { push @tbl,$data[0] if $data[0] =~ /^$prefix/ }
| |
| − | die "\nNo tables found with matching prefix\n" if $#tbl < 0;
| |
| − | $tbl = join ' ', @tbl;
| |
| − | | |
| − | # Export tables to tmp file and read into $template
| |
| − | unlink $tmp;
| |
| − | qx(mysqldump -u $user --password='$pwd' $db $tbl > $tmp);
| |
| − | $template = $tmp;
| |
| − | | |
| − | }
| |
| − | | |
| − | # Read in the template file to $sql
| |
| − | open FH,'<',$template or die "\nCould not read template file '$template'\n";
| |
| − | sysread FH,$sql,-s $template;
| |
| − | close FH;
| |
| − | | |
| − | # Find the prefix (if not already set) being used in the template and prepare for use in replacement regexp
| |
| − | if ($prefix eq '') {
| |
| − | die "\nThe template file supplied is not a valid wiki dump\n"
| |
| − | unless $sql =~ /^CREATE TABLE `(\w*)recentchanges`/m;
| |
| − | $prefix = qr($1);
| |
| − | }
| |
| − | | |
| − | # Main replication loop
| |
| − | for (@ARGV) {
| |
| − | | |
| − | # Determine the database and prefix to replicate template into
| |
| − | if (/^(\w+)\.(\w+)$/) { ($db,$pre) = ($1,$2) } else { $pre = $_ }
| |
| − | $pre .= '_' unless $pre =~ /_$/;
| |
| − | | |
| − | # Make a duplicate of the template modified to the current prefix
| |
| − | $data = $sql;
| |
| − | $data =~ s/$prefix/$pre/g;
| |
| − | | |
| − | # Write the duplicate into a tmp file
| |
| − | unlink $tmp;
| |
| − | if (open FH,'>',$tmp) { print FH $data; close FH }
| |
| − | else { print "Could not write data for wiki $db.$pre to '$tmp'\n" }
| |
| − | | |
| − | # Pipe the file into MySQL and remove the tmp file
| |
| − | qx(mysql -u $user --password='$pwd' $db < $tmp);
| |
| − | if ($!) { print "Error creating wiki $db.$pre: $!\n" }
| |
| − | else { print "Wiki $db.$pre created.\n" }
| |
| − | }
| |
| − | </perl>
| |
