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/*
This is a debug tool. It checks all revisions for data corruption
*/
if(process.argv.length != 3)
{
console.error("Use: node bin/checkPad.js $PADID");
process.exit(1);
}
//get the padID
var padId = process.argv[2];
//initialize the variables
var db, settings, padManager;
var npm = require("../src/node_modules/npm");
var async = require("../src/node_modules/async");
var Changeset = require("ep_etherpad-lite/static/js/Changeset");
async.series([
//load npm
function(callback) {
npm.load({}, function(er) {
callback(er);
})
},
//load modules
function(callback) {
settings = require('../src/node/utils/Settings');
db = require('../src/node/db/DB');
//initialize the database
db.init(callback);
},
//get the pad
function (callback)
{
padManager = require('../src/node/db/PadManager');
padManager.doesPadExists(padId, function(err, exists)
{
if(!exists)
{
console.error("Pad does not exist");
process.exit(1);
}
padManager.getPad(padId, function(err, _pad)
{
pad = _pad;
callback(err);
});
});
},
function (callback)
{
//create an array with key revisions
//key revisions always save the full pad atext
var head = pad.getHeadRevisionNumber();
var keyRevisions = [];
for(var i=0;i<head;i+=100)
{
keyRevisions.push(i);
}
//run trough all key revisions
async.forEachSeries(keyRevisions, function(keyRev, callback)
{
//create an array of revisions we need till the next keyRevision or the End
var revisionsNeeded = [];
for(var i=keyRev;i<=keyRev+100 && i<=head; i++)
{
revisionsNeeded.push(i);
}
//this array will hold all revision changesets
var revisions = [];
//run trough all needed revisions and get them from the database
async.forEach(revisionsNeeded, function(revNum, callback)
{
db.db.get("pad:"+padId+":revs:" + revNum, function(err, revision)
{
revisions[revNum] = revision;
callback(err);
});
}, function(err)
{
if(err)
{
callback(err);
return;
}
//check if the pad has a pool
if(pad.pool === undefined )
{
console.error("Attribute pool is missing");
process.exit(1);
}
//check if there is an atext in the keyRevisions
if(revisions[keyRev] === undefined || revisions[keyRev].meta === undefined || revisions[keyRev].meta.atext === undefined)
{
console.error("No atext in key revision " + keyRev);
callback();
return;
}
var apool = pad.pool;
var atext = revisions[keyRev].meta.atext;
for(var i=keyRev+1;i<=keyRev+100 && i<=head; i++)
{
try
{
//console.log("check revision " + i);
var cs = revisions[i].changeset;
atext = Changeset.applyToAText(cs, atext, apool);
}
catch(e)
{
console.error("Bad changeset at revision " + i + " - " + e.message);
callback();
return;
}
}
callback();
});
}, callback);
}
], function (err)
{
if(err) throw err;
else
{
console.log("finished");
process.exit(0);
}
});
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