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<title>[2138] sites/trunk/trac.wordpress.org/bin: Trac: MySQL to SQLite migration scripts.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/2138">2138</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/2138","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>nacin</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-11-29 00:54:09 +0000 (Sun, 29 Nov 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Trac: MySQL to SQLite migration scripts.</pre>
<h3>Added Paths</h3>
<ul>
<li><a href="#sitestrunktracwordpressorgbinsqlitemigratephp">sites/trunk/trac.wordpress.org/bin/sqlite-migrate.php</a></li>
<li><a href="#sitestrunktracwordpressorgbinsqlitemigratesh">sites/trunk/trac.wordpress.org/bin/sqlite-migrate.sh</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunktracwordpressorgbinsqlitemigratephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/trac.wordpress.org/bin/sqlite-migrate.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/trac.wordpress.org/bin/sqlite-migrate.php (rev 0)
+++ sites/trunk/trac.wordpress.org/bin/sqlite-migrate.php 2015-11-29 00:54:09 UTC (rev 2138)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,114 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+#!/usr/bin/env php
+<?php
+
+error_reporting(-1);
+ini_set('memory_limit', '2G');
+
+$opts = getopt( 'u:p:h:d:f:' );
+if ( ! isset( $opts['u'], $opts['p'], $opts['h'], $opts['d'], $opts['f'] ) ) {
+ echo "This script migrates a MySQL database to a Trac SQLite file that is pre-initialized with empty tables.\n\n";
+ echo "Required flags:\n -u MySQL user\n -p MySQL password\n -h MySQL host name\n -d MySQL DB name\n -f Path to SQLite file\n";
+ exit( 1 );
+}
+
+define( 'SQLITE_DB', realpath( $opts['f'] ) );
+define( 'DB_NAME', $opts['d'] );
+define( 'DB_USER', $opts['u'] );
+define( 'DB_PASS', $opts['p'] );
+define( 'DB_HOST', $opts['h'] );
+
+$start = microtime( true );
+
+$tables = array(
+ 'attachment', 'auth_cookie', 'cache',
+ 'report', 'repository', 'revision',
+ 'system', 'ticket', 'ticket_change', 'wiki',
+);
+
+// Remaining tables are ASCII data, and some of them are huge (session, session_attribute, node_change).
+// See sqlite-migrate.sh for the rest.
+
+$mysql = new wpdb_quick( DB_USER, DB_PASS, DB_NAME, DB_HOST );
+
+try {
+ $sqlite = new PDO( 'sqlite:' . SQLITE_DB );
+} catch ( PDOException $Exception ) {
+ print_r( $Exception );
+ unset( $sqlite, $mysql );
+ return;
+}
+
+$errors = array();
+
+foreach ( $tables as $table ) {
+ $sqlite->query( "BEGIN TRANSACTION" );
+
+ $sqlite->query( "PRAGMA synchronous=OFF" );
+ $sqlite->query( "PRAGMA count_changes=OFF" );
+ $sqlite->query( "PRAGMA journal_mode=MEMORY" );
+ $sqlite->query( "PRAGMA temp_store=MEMORY" );
+
+ $raw_fields = $mysql->get_results( "DESCRIBE $table" );
+ $fields = $numbers = array();
+
+ foreach ( $raw_fields as $field ) {
+ $fields[] = $field->Field;
+ if ( false !== strpos( $field->Type, 'int(' ) ) {
+ $numbers[ $field->Field ] = true;
+ }
+ }
+
+ $placeholders = implode( ', ', array_fill( 0, count( $fields ), '?' ) );
+ $fields = implode( ', ', $fields );
+
+ $sql = "INSERT INTO $table ($fields) VALUES ($placeholders)";
+ $query = $sqlite->prepare( $sql );
+ $results = $mysql->get_results( "SELECT * FROM $table" );
+ printf( "Processing $table with %d results.\n", count( $results ) );
+
+ foreach ( $results as $row ) {
+ try {
+ $row = (array) $row;
+ foreach ( $numbers as $key => $true ) {
+ $row[ $key ] = (int) $row[ $key ];
+ }
+ $query->execute( (array) $item );
+ // var_dump( $row, $query->errorInfo() );
+ } catch ( PDOException $e ) {
+ $errors[] = $e->getCode() . ': ' . $e->getMessage();
+ }
+ }
+
+ $sqlite->query( "END TRANSACTION" );
+}
+
+echo "Done.. " . ( microtime( true ) - $start ) . " seconds.\n";
+
+if ( $errors ) {
+ echo "There were errors:\n";
+ var_dump( $errors );
+}
+
+class wpdb_quick {
+ protected $dbh;
+
+ public $errors = array();
+
+ function __construct( $dbuser, $dbpassword, $dbname, $dbhost ) {
+ if ( ! $this->dbh = mysql_connect( $dbhost, $dbuser, $dbpassword ) ) {
+ die( 'Could not connect to MySQL DB.' );
+ }
+ if ( ! mysql_select_db( $dbname, $this->dbh ) ) {
+ die( 'Could not select the MySQL database.' );
+ }
+ }
+
+ function get_results( $query ) {
+ $resource = mysql_query( $query, $this->dbh );
+ $results = array();
+ while ( $row = mysql_fetch_object( $resource ) ) {
+ $results[] = $row;
+ }
+ return $results;
+ }
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/trac.wordpress.org/bin/sqlite-migrate.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svnexecutable"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:executable</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+*
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunktracwordpressorgbinsqlitemigratesh"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/trac.wordpress.org/bin/sqlite-migrate.sh</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/trac.wordpress.org/bin/sqlite-migrate.sh (rev 0)
+++ sites/trunk/trac.wordpress.org/bin/sqlite-migrate.sh 2015-11-29 00:54:09 UTC (rev 2138)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,32 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+#!/bin/sh
+
+# Based on https://gist.github.com/esperlu/943776
+
+mysqldump --compatible=ansi --skip-extended-insert --compact "$@" | \
+
+awk '
+BEGIN {
+ FS=",$"
+ print "PRAGMA synchronous = OFF;"
+ print "PRAGMA journal_mode = MEMORY;"
+ print "BEGIN TRANSACTION;"
+}
+
+# Print all `INSERT` lines. The single quotes are protected by another single quote.
+/INSERT/ {
+ gsub( /\\\047/, "\047\047" )
+ gsub(/\\n/, "\n")
+ gsub(/\\r/, "\r")
+ gsub(/\\"/, "\"")
+ gsub(/\\\\/, "\\")
+ gsub(/\\\032/, "\032")
+ print
+ next
+}
+
+# Print all `KEY` creation lines.
+END {
+ print "END TRANSACTION;"
+}
+'
+exit 0
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/trac.wordpress.org/bin/sqlite-migrate.sh
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svnexecutable"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:executable</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+*
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span></div>
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