etherpad-lite/bin/convert.js

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const startTime = Date.now();
const fs = require('fs');
const ueberDB = require('../src/node_modules/ueberdb2');
const mysql = require('../src/node_modules/ueberdb2/node_modules/mysql');
const async = require('../src/node_modules/async');
const Changeset = require('ep_etherpad-lite/static/js/Changeset');
const randomString = require('ep_etherpad-lite/static/js/pad_utils').randomString;
const AttributePool = require('ep_etherpad-lite/static/js/AttributePool');
const settingsFile = process.argv[2];
const sqlOutputFile = process.argv[3];
// stop if the settings file is not set
if (!settingsFile || !sqlOutputFile) {
console.error('Use: node convert.js $SETTINGSFILE $SQLOUTPUT');
process.exit(1);
}
log('read settings file...');
// read the settings file and parse the json
const settings = JSON.parse(fs.readFileSync(settingsFile, 'utf8'));
log('done');
log('open output file...');
const sqlOutput = fs.openSync(sqlOutputFile, 'w');
const sql = 'SET CHARACTER SET UTF8;\n' +
'CREATE TABLE IF NOT EXISTS `store` ( \n' +
'`key` VARCHAR( 100 ) NOT NULL , \n' +
'`value` LONGTEXT NOT NULL , \n' +
'PRIMARY KEY ( `key` ) \n' +
') ENGINE = INNODB;\n' +
'START TRANSACTION;\n\n';
fs.writeSync(sqlOutput, sql);
log('done');
const etherpadDB = mysql.createConnection({
host: settings.etherpadDB.host,
user: settings.etherpadDB.user,
password: settings.etherpadDB.password,
database: settings.etherpadDB.database,
port: settings.etherpadDB.port,
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});
// get the timestamp once
const timestamp = Date.now();
let padIDs;
async.series([
// get all padids out of the database...
function (callback) {
log('get all padIds out of the database...');
etherpadDB.query('SELECT ID FROM PAD_META', [], (err, _padIDs) => {
padIDs = _padIDs;
callback(err);
});
},
function (callback) {
log('done');
// create a queue with a concurrency 100
const queue = async.queue((padId, callback) => {
convertPad(padId, (err) => {
incrementPadStats();
callback(err);
});
}, 100);
// set the step callback as the queue callback
queue.drain = callback;
// add the padids to the worker queue
for (let i = 0, length = padIDs.length; i < length; i++) {
queue.push(padIDs[i].ID);
}
},
], (err) => {
if (err) throw err;
// write the groups
let sql = '';
for (const proID in proID2groupID) {
const groupID = proID2groupID[proID];
const subdomain = proID2subdomain[proID];
sql += `REPLACE INTO store VALUES (${etherpadDB.escape(`group:${groupID}`)}, ${etherpadDB.escape(JSON.stringify(groups[groupID]))});\n`;
sql += `REPLACE INTO store VALUES (${etherpadDB.escape(`mapper2group:subdomain:${subdomain}`)}, ${etherpadDB.escape(groupID)});\n`;
}
// close transaction
sql += 'COMMIT;';
// end the sql file
fs.writeSync(sqlOutput, sql, undefined, 'utf-8');
fs.closeSync(sqlOutput);
log('finished.');
process.exit(0);
});
function log(str) {
console.log(`${(Date.now() - startTime) / 1000}\t${str}`);
}
let padsDone = 0;
function incrementPadStats() {
padsDone++;
if (padsDone % 100 == 0) {
const averageTime = Math.round(padsDone / ((Date.now() - startTime) / 1000));
log(`${padsDone}/${padIDs.length}\t${averageTime} pad/s`);
}
}
var proID2groupID = {};
var proID2subdomain = {};
var groups = {};
function convertPad(padId, callback) {
const changesets = [];
const changesetsMeta = [];
const chatMessages = [];
const authors = [];
let apool;
let subdomain;
let padmeta;
async.series([
// get all needed db values
function (callback) {
async.parallel([
// get the pad revisions
function (callback) {
const sql = 'SELECT * FROM `PAD_CHAT_TEXT` WHERE NUMID = (SELECT `NUMID` FROM `PAD_CHAT_META` WHERE ID=?)';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
// parse the pages
for (let i = 0, length = results.length; i < length; i++) {
parsePage(chatMessages, results[i].PAGESTART, results[i].OFFSETS, results[i].DATA, true);
}
} catch (e) { err = e; }
}
callback(err);
});
},
// get the chat entries
function (callback) {
const sql = 'SELECT * FROM `PAD_REVS_TEXT` WHERE NUMID = (SELECT `NUMID` FROM `PAD_REVS_META` WHERE ID=?)';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
// parse the pages
for (let i = 0, length = results.length; i < length; i++) {
parsePage(changesets, results[i].PAGESTART, results[i].OFFSETS, results[i].DATA, false);
}
} catch (e) { err = e; }
}
callback(err);
});
},
// get the pad revisions meta data
function (callback) {
const sql = 'SELECT * FROM `PAD_REVMETA_TEXT` WHERE NUMID = (SELECT `NUMID` FROM `PAD_REVMETA_META` WHERE ID=?)';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
// parse the pages
for (let i = 0, length = results.length; i < length; i++) {
parsePage(changesetsMeta, results[i].PAGESTART, results[i].OFFSETS, results[i].DATA, true);
}
} catch (e) { err = e; }
}
callback(err);
});
},
// get the attribute pool of this pad
function (callback) {
const sql = 'SELECT `JSON` FROM `PAD_APOOL` WHERE `ID` = ?';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
apool = JSON.parse(results[0].JSON).x;
} catch (e) { err = e; }
}
callback(err);
});
},
// get the authors informations
function (callback) {
const sql = 'SELECT * FROM `PAD_AUTHORS_TEXT` WHERE NUMID = (SELECT `NUMID` FROM `PAD_AUTHORS_META` WHERE ID=?)';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
// parse the pages
for (let i = 0, length = results.length; i < length; i++) {
parsePage(authors, results[i].PAGESTART, results[i].OFFSETS, results[i].DATA, true);
}
} catch (e) { err = e; }
}
callback(err);
});
},
// get the pad information
function (callback) {
const sql = 'SELECT JSON FROM `PAD_META` WHERE ID=?';
etherpadDB.query(sql, [padId], (err, results) => {
if (!err) {
try {
padmeta = JSON.parse(results[0].JSON).x;
} catch (e) { err = e; }
}
callback(err);
});
},
// get the subdomain
function (callback) {
// skip if this is no proPad
if (padId.indexOf('$') == -1) {
callback();
return;
}
// get the proID out of this padID
const proID = padId.split('$')[0];
const sql = 'SELECT subDomain FROM pro_domains WHERE ID = ?';
etherpadDB.query(sql, [proID], (err, results) => {
if (!err) {
subdomain = results[0].subDomain;
}
callback(err);
});
},
], callback);
},
function (callback) {
// saves all values that should be written to the database
const values = {};
// this is a pro pad, let's convert it to a group pad
if (padId.indexOf('$') != -1) {
const padIdParts = padId.split('$');
const proID = padIdParts[0];
const padName = padIdParts[1];
let groupID;
// this proID is not converted so far, do it
if (proID2groupID[proID] == null) {
groupID = `g.${randomString(16)}`;
// create the mappers for this new group
proID2groupID[proID] = groupID;
proID2subdomain[proID] = subdomain;
groups[groupID] = {pads: {}};
}
// use the generated groupID;
groupID = proID2groupID[proID];
// rename the pad
padId = `${groupID}$${padName}`;
// set the value for this pad in the group
groups[groupID].pads[padId] = 1;
}
try {
const newAuthorIDs = {};
const oldName2newName = {};
// replace the authors with generated authors
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// we need to do that cause where the original etherpad saves pad local authors, the new (lite) etherpad uses them global
for (var i in apool.numToAttrib) {
var key = apool.numToAttrib[i][0];
const value = apool.numToAttrib[i][1];
// skip non authors and anonymous authors
if (key != 'author' || value == '') continue;
// generate new author values
const authorID = `a.${randomString(16)}`;
const authorColorID = authors[i].colorId || Math.floor(Math.random() * (exports.getColorPalette().length));
const authorName = authors[i].name || null;
// overwrite the authorID of the attribute pool
apool.numToAttrib[i][1] = authorID;
// write the author to the database
values[`globalAuthor:${authorID}`] = {colorId: authorColorID, name: authorName, timestamp};
// save in mappers
newAuthorIDs[i] = authorID;
oldName2newName[value] = authorID;
}
// save all revisions
for (var i = 0; i < changesets.length; i++) {
values[`pad:${padId}:revs:${i}`] = {changeset: changesets[i],
meta: {
author: newAuthorIDs[changesetsMeta[i].a],
timestamp: changesetsMeta[i].t,
atext: changesetsMeta[i].atext || undefined,
}};
}
// save all chat messages
for (var i = 0; i < chatMessages.length; i++) {
values[`pad:${padId}:chat:${i}`] = {text: chatMessages[i].lineText,
userId: oldName2newName[chatMessages[i].userId],
time: chatMessages[i].time};
}
// generate the latest atext
const fullAPool = (new AttributePool()).fromJsonable(apool);
const keyRev = Math.floor(padmeta.head / padmeta.keyRevInterval) * padmeta.keyRevInterval;
let atext = changesetsMeta[keyRev].atext;
let curRev = keyRev;
while (curRev < padmeta.head) {
curRev++;
const changeset = changesets[curRev];
atext = Changeset.applyToAText(changeset, atext, fullAPool);
}
values[`pad:${padId}`] = {atext,
pool: apool,
head: padmeta.head,
chatHead: padmeta.numChatMessages};
} catch (e) {
console.error(`Error while converting pad ${padId}, pad skipped`);
console.error(e.stack ? e.stack : JSON.stringify(e));
callback();
return;
}
let sql = '';
for (var key in values) {
sql += `REPLACE INTO store VALUES (${etherpadDB.escape(key)}, ${etherpadDB.escape(JSON.stringify(values[key]))});\n`;
}
fs.writeSync(sqlOutput, sql, undefined, 'utf-8');
callback();
},
], callback);
}
/**
* This parses a Page like Etherpad uses them in the databases
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* The offsets describes the length of a unit in the page, the data are
* all values behind each other
*/
function parsePage(array, pageStart, offsets, data, json) {
let start = 0;
const lengths = offsets.split(',');
for (let i = 0; i < lengths.length; i++) {
let unitLength = lengths[i];
// skip empty units
if (unitLength == '') continue;
// parse the number
unitLength = Number(unitLength);
// cut the unit out of data
const unit = data.substr(start, unitLength);
// put it into the array
array[pageStart + i] = json ? JSON.parse(unit) : unit;
// update start
start += unitLength;
}
}