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udger-updater-nodejs

v1.2.4

Published

Enhanced nodejs data updater for udger local and cloud parser https://udger.com/products

Downloads

25

Readme

udger-updater-nodejs

Build Status Dependencies

Udger Updater for NodeJS (data ver. 3)

Like others udger-updater-win and udger-updater-linux, this module handle udger sqlite database update. Differences with other updaters:

  • 100% nodejs
  • Dump differences between database versions (all tables)

Requirements

  • nodejs >= 8.9.0
  • datafile v3 (udgerdb_v3.dat) from https://data.udger.com/
  • a valid subscription key

Install

npm install udger-updater-nodejs

Usage example

const fs = require('fs-extra');

let options = {
    subscriptionKey:process.env.UDGER_KEY||'YOUR_SUBSCRIPTION_KEY_HERE',
    currentDatabase:'./udgerdb_v3.dat',

    // you can force a temporary filename,
    // if not set, it will use os tmpdir with a random filename
    // nextDatabase:'./tmpFile.dat'
};

console.log("tmp file: %s", options.nextDatabase);

const udgerUpdater = require('../')(options);

udgerUpdater.on('error', (err) => {
    console.log('an error occured');
    console.log(err);
})

udgerUpdater.on('needUpdate', (needUpdate, versions) => {
    if (needUpdate) {
        console.log('udger database should be updated');
        console.log(JSON.stringify(versions, null, 4));
        return udgerUpdater.downloadNow();
    }

    console.log('udger database already up to date');
    console.log(JSON.stringify(versions, null, 4));

});

udgerUpdater.on('downloading', (percent) => {
    if (percent % 33 === 0 || !percent || percent === 100) {
        console.log('downloading udger database ... %s', percent+'%');
    }
});

udgerUpdater.on('downloaded', () => {
    console.log('downloaded');

    udgerUpdater.makeDiff({
        itemsDisplayedMax:1000,
        htmlReport:true
    });

});

udgerUpdater.on('diffing', (sqliteTableName) => {
    console.log('diffing %s', sqliteTableName);
});

udgerUpdater.on('diffDone', () => {
    console.log('diff done');

    // warning, at this point, every process using current database
    // must close connection. New database can not be copied if used.
    fs.copy(options.nextDatabase, options.currentDatabase, err => {
        if (err) return console.error(err);
        console.log('%s has been updated', options.currentDatabase);
    })
});

udgerUpdater.checkForUpdate();

HTML Report sample

Alt text

Troubleshoot

You can use env var "DEBUG" to see debug messages.

win32

cd example
set DEBUG=*
node update.js

linux

cd example
DEBUG=* node update.js

Running tests

npm test

Author

old v2 format

This module does not support v2 format