<?php function ask_question($menu, $options, $default) { $r=null; while(!$r) { echo $menu; $str = substr(strtolower(fgets(STDIN)),0,-1); if($str == '') $r = $default; else if(in_array($str, $options)) $r = $str; } return $r; } function get_data($prompt, $regex) { do { echo $prompt; $r = substr(fgets(STDIN), 0, -1); if(!preg_match($regex, $prompt)) $r = ''; } while($r === ''); return $r; } function parse_htconfig($file) { if(!file_exists($file)) return array(); $conf = file_get_contents($file); preg_match_all('/\$db\_(host|port|user|pass|data|type)\s*=\s*\'([[:print:]]+)\'/', $conf, $matches); return array_combine($matches[1], $matches[2]); } function get_configtype(array $data) { if(!isset($data['host'], $data['user'], $data['pass'], $data['data'])) return 'none'; if(@$data['type'] == 1) return 'pgsql'; return 'mysql'; } function phpquote($str) { for($r = '', $x=0, $l=strlen($str); $x < $l; $x++) if($str{$x} == '\'' || $str{$x} == '\\') $r .= '\\' . $str{$x}; else $r .= $str{$x}; return $r; } function run_sql($file, $db, &$err, &$n) { $sql = file_get_contents($file); $sql = explode(';', $sql); $err = 0; $n = 0; $c = count($sql); if(!$c) { echo "Unknown error.\n"; exit(); } foreach($sql as $stmt) { if($stmt == '' || $stmt == "\n" || $stmt == "\n\n") { $c--; continue; } $r = $db->exec($stmt); if($r===false) { echo "\nError executing $stmt: ".var_export($db->errorInfo(), true)."\n"; $err++; } else { $n++; } if($n % 5 == 0) echo "\033[255DExecuting: $file, $n/$c\033[K"; } echo "\n"; } $drivers=true; if(!class_exists('PDO')) $drivers=false; if($drivers) { $drivers = PDO::getAvailableDrivers(); if(!in_array('pgsql', $drivers) || !in_array('mysql', $drivers)) $drivers = false; } if(!$drivers) { echo "Sorry. This migration tool requires both mysql and pgsql PDO drivers.\n"; $r = ask_question("If you are on dreamhost you can enable them. This might work on other shared hosts too. Type 'n' to do it yourself.\nWould you like to try (Y/n)? ", array('y', 'n'), 'y'); if($r=='y') { $path = $_SERVER['HOME'] . '/.php/5.4'; if(!file_exists($path)) mkdir($path, 0770, true); $rcfile = $path . '/phprc'; $str = ''; $mods = get_loaded_extensions(); foreach(array('pdo_mysql','pdo_pgsql','pgsql') as $ext) if(!in_array($ext, $mods)) $str .= 'extension=' . $ext . ".so\n"; file_put_contents($rcfile, $str, FILE_APPEND ); echo "drivers enabled.\nNow type: \033[1m/usr/local/bin/php-5.4 install/".basename($argv[0])."\033[0m\n"; } exit(); } foreach(array('install','include','mod','view') as $dir) { if(!file_exists($dir)) { echo "You must execute from inside the webroot like the cron\n"; exit(); } } $cfgfile = '.htconfig.php'; if($argc >= 2 && $argv[1] == '--resume') { if($argc < 4) { echo "Resume usage {$argv[0]} --resume <table> <row>\n"; exit(); } $starttable = $argv[2]; $startrow = $argv[3]; $cfgfile = '.htconfig.php-mysql'; } $cfg = parse_htconfig($cfgfile); $type = get_configtype($cfg); if($type != 'mysql') { echo "Error. Must start with standard mysql installation in .htconfig.php.\n"; exit(); } if(!$cfg['port']) $cfg['port'] = 3306; try { $mydb = new PDO("mysql:host={$cfg['host']};dbname={$cfg['data']};port={$cfg['port']}", $cfg['user'], $cfg['pass']); } catch (PDOException $e) { echo "Error connecting to mysql DB: " . $e->getMessage() . "\n"; exit(); } // mysql insists on buffering even when you use fetch() instead of fetchAll() for some stupid reason // http://stackoverflow.com/questions/6895098/pdo-mysql-memory-consumption-with-large-result-set $mydb->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false); if(!file_exists('.htconfig.php-pgsql')) { echo "Enter postgres server info:\n"; $p['host'] = get_data("Hostname: ", '/[\w.]+/'); $p['port'] = get_data("Enter port (0 for default): ", '/\d+/'); $p['user'] = get_data("Username: ", '/\w+/'); $p['pass'] = get_data("Password: ", '/[[:print:]]+/'); $p['data'] = get_data("Database name: ", '/\w+/'); $old = file_get_contents('.htconfig.php'); $new = preg_replace( array( '/^(\$db_host\s*=\s*\')([\w.]+)(\';)$/m', '/^(\$db_port\s*=\s*\')(\d+)(\';)$/m', '/^(\$db_user\s*=\s*\')(\w+)(\';)$/m', '/^(\$db_pass\s*=\s*\')([[:print:]]+)(\';)/m', '/^(\$db_data\s*=\s*\')(\w+)(\';)$/m', '/^(\$db_type\s*=\s*\')(\d)(\';)$/m' // in case they already have it ), array( "$1{$p['host']}$3", "\${1}{$p['port']}$3", "$1{$p['user']}$3", "$1{$p['pass']}$3", "$1{$p['data']}$3\n\$db_type = '1';\n", // they probably don't "\${1}1$3" ), $old, 1, $repl ); if($new === false || $repl < 5) { echo "Failed. Please make a postgres config file named .htconfig.php-pgsql - Be sure to add \"\$db_type = '1';\" to your config.\n"; exit(); } file_put_contents('.htconfig.php-pgsql', $new); } $pcfg = parse_htconfig('.htconfig.php-pgsql'); $ptype = get_configtype($pcfg); if($ptype != 'pgsql') { echo "Error. Must have a valid pgsql config named .htconfig.php-pgsql. Be sure to add \"\$db_type = '1';\" to your config.\n"; exit(); } if(!$pcfg['port']) $pcfg['port'] = 5432; try { $pgdb = new PDO("pgsql:host={$pcfg['host']};dbname={$pcfg['data']};port={$pcfg['port']}", $pcfg['user'], $pcfg['pass']); } catch (PDOException $e) { echo "Error connecting to pgsql DB: " . $e->getMessage() . "\n"; echo "cfg string: " . "pgsql:host={$pcfg['host']};dbname={$pcfg['data']};port={$pcfg['port']}\n"; exit(); } $B = "\033[0;34m"; $H = "\033[0;35m"; $W = "\033[1;37m"; $M = "\033[1;31m"; $N = "\033[0m"; if(isset($starttable)) { $r = ask_question("Ready to migrate {$W}Red{$M}(#){$W}Matrix$N from mysql db @$B{$cfg['host']}$N/$B{$cfg['data']}$N to postgres db @$B{$pcfg['host']}$N/$B{$pcfg['data']}$N. Resuming failed migration ({$M}experimental$N) starting at table '$starttable' row $startrow. Are you ready to begin (N/y)? ", array('y', 'n'), 'n' ); if($r == 'n') exit(); } else { $r = ask_question("Ready to migrate {$W}Red{$M}(#){$W}Matrix$N from mysql db @$B{$cfg['host']}$N/$B{$cfg['data']}$N to postgres db @$B{$pcfg['host']}$N/$B{$pcfg['data']}$N. The site will be disabled during the migration by moving the $H.htconfig.php$N file to $H.htconfig.php-mysql$N. If for any reason the migration fails, you will need to move the config file back into place manually before trying again. Are you ready to begin (N/y)? ", array('y','n'), 'n' ); if($r == 'n') exit(); rename('.htconfig.php', '.htconfig.php-mysql'); run_sql('install/schema_postgres.sql', $pgdb, $err, $n); if($err) { echo "There were $err errors creating the pgsql schema. Unable to continue.\n"; exit(); } echo "pgsql schema created. $n queries executed successfully.\n"; } $res = $pgdb->query("select relname, attname, pg_type.typname from ((pg_attribute inner join pg_class on attrelid=pg_class.oid) inner join pg_type on atttypid=pg_type.oid) inner join pg_namespace on relnamespace=pg_namespace.oid where nspname='public' and atttypid not in (26,27,28,29) and relkind='r' and attname <> 'item_search_vector';"); if($res === false) { echo "Error reading back schema. Unable to continue.\n"; var_export($pgdb->errorInfo()); exit(); } $schema = array(); while(($row = $res->fetch()) !== false) $schema[$row[0]][$row[1]] = $row[2]; $res = $pgdb->query("select relname, attname from pg_attribute inner join pg_class on attrelid=pg_class.oid inner join pg_constraint on conrelid=pg_class.oid and pg_attribute.attnum = any (conkey) where contype='p';"); if($res === false) { echo "Error reading back primary keys. Unable to continue.\n"; var_export($pgdb->errorInfo()); exit(); } $pkeys = array(); while(($row = $res->fetch()) !== false) $pkeys[$row[0]] = $row[1]; $err = 0; $n = 0; $reserved = array('ignore','key','with'); foreach($schema as $table=>$fields) { if(isset($starttable) && !$n && $table != $starttable) { echo "Skipping table $table\n"; continue; } $fnames = array_keys($fields); $pfnames = array_keys($fields); foreach($fnames as &$fname) if(in_array($fname, $reserved)) $fname = '`' . $fname . '`'; $fstr = implode(',', $fnames); foreach($pfnames as &$pfname) if(in_array($pfname, $reserved)) $pfname = '"' . $pfname . '"'; $pfstr = implode(',', $pfnames); $cres = $mydb->query("SELECT count(*) FROM $table;"); if($cres === false) { echo "Fatal error counting table $table: ".var_export($mydb->errorInfo(), true)."\n"; exit(); } $nrows = $cres->fetchColumn(0); $cres->closeCursor(); if(!$nrows) { echo "TABLE $table has 0 rows in mysql db.\n"; continue; } $pstr = ''; for($x=0, $c=count($fields); $x < $c; $x++) $pstr .= ($x ? ',?' : '?'); if(isset($starttable) && $table == $starttable) { $selectsql = "SELECT $fstr FROM $table ORDER BY {$pkeys[$table]} LIMIT $nrows OFFSET $startrow;"; $crow = $startrow; } else { $selectsql = "SELECT $fstr FROM $table ORDER BY {$pkeys[$table]};"; $crow = 0; } echo "\033[255DTABLE: $table [$c fields] $crow/$nrows (".number_format(($crow/$nrows)*100,2)."%)\033[K"; $res = $mydb->query($selectsql); if($res === false) { echo "Fatal Error importing table $table: ".var_export($mydb->errorInfo(), true)."\n"; exit(); } $istmt = $pgdb->prepare("INSERT INTO $table ($pfstr) VALUES ($pstr);"); if($istmt === false) { echo "Fatal error preparing query. Aborting.\n"; var_export($pgdb->errorInfo()); exit(); } while(($row = $res->fetch(PDO::FETCH_NUM)) !== false) { foreach($row as $idx => &$val) if(array_slice(array_values($fields),$idx,1)[0] == 'timestamp' && $val == '0000-00-00 00:00:00') $istmt->bindParam($idx+1, ($nulldate='0001-01-01 00:00:00')); else if(array_slice(array_values($fields),$idx,1)[0] == 'bytea') $istmt->bindParam($idx+1, $val, PDO::PARAM_LOB); else $istmt->bindParam($idx+1, $val); $r = $istmt->execute(); if($r === false) { $err++; echo "Insert error: ".var_export(array($pgdb->errorInfo(), $table, $fields, $row), true)."\nResume with {$argv[0]} --resume $table $crow\n"; exit(); } else $n++; $crow++; if(($crow % 10) == 0 || $crow == $nrows) echo "\033[255DTABLE: $table [$c fields] $crow/$nrows (".number_format(($crow/$nrows)*100,2)."%)\033[K"; } $res->closeCursor(); echo "\n"; } echo "Done with $err errors and $n inserts.\n"; if($err) { echo "Migration had errors. Aborting.\n"; exit(); } run_sql('install/migrate_mypg_fixseq.sql', $pgdb, $err, $n); echo "Sequences updated with $err errors and $n inserts.\n"; if($err) exit(); $r = ask_question("Everything successful. Once you connect up the pg database there is no going back. Do you want to make it live (N,y)?", array('y', 'n'), 'n'); if($r == 'n') { echo "You can make active by renaming .htconfig.php-pgsql to .htconfig.php, or start over by renaming .htconfig.php-mysql to .htconfig.php\n"; exit(); } rename('.htconfig.php-pgsql', '.htconfig.php'); echo "Done. {$W}Red{$M}(#){$W}Matrix$N now running on postgres.\n";