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Merge pull request #2839 from Blake-jne/faster-migration 

Improve DB migration performance.
This commit is contained in:
John McLear 2015-11-24 13:47:28 +00:00
parent f774c2584f c61aa20028
commit a419a3a87d
2 changed files with 38 additions and 18 deletions
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18
bin/migrateDirtyDBtoMySQL.js
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@ -1,18 +0,0 @@
require("ep_etherpad-lite/node_modules/npm").load({}, function(er,npm) {
process.chdir(npm.root+'/..')
var settings = require("ep_etherpad-lite/node/utils/Settings");
var dirty = require("ep_etherpad-lite/node_modules/ueberDB/node_modules/dirty")('var/dirty.db');
var db = require("ep_etherpad-lite/node/db/DB");
db.init(function() {
db = db.db;
dirty.on("load", function() {
dirty.forEach(function(key, value) {
db.set(key, value);
});
});
});
});

38
bin/migrateDirtyDBtoRealDB.js Normal file
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require("ep_etherpad-lite/node_modules/npm").load({}, function(er,npm) {
process.chdir(npm.root+'/..')
// This script requires that you have modified your settings.json file
// to work with a real database. Please make a backup of your dirty.db
// file before using this script, just to be safe.
var settings = require("ep_etherpad-lite/node/utils/Settings");
var dirty = require("dirty")('var/dirty.db');
var ueberDB = require("../src/node_modules/ueberDB");
var log4js = require("../src/node_modules/log4js");
var dbWrapperSettings = {
"cache": "0", // The cache slows things down when you're mostly writing.
};
var db = new ueberDB.database(settings.dbType, settings.dbSettings, dbWrapperSettings, log4js.getLogger("ueberDB"));
db.init(function() {
console.log("Waiting for dirtyDB to parse its file.");
dirty.on("load", function(length) {
console.log("Loaded " + length + " records, processing now.");
var remaining = length;
dirty.forEach(function(key, value) {
db.set(key, value, function(error) {
if (typeof error != 'undefined') {
console.log("Unexpected result handling: ", key, value, " was: ", error);
}
remaining -= 1;
var oldremaining = remaining;
if ((oldremaining % 100) == 0) {
console.log("Records not yet flushed to database: ", remaining);
}
});
});
console.log("Please wait for all records to flush to database, then kill this process.");
});
});
});