How I Found A Job With Node + Angular, Part 2: Let’s Level Some Jobs

In the previous post, I explained my frustration about seeking possible close (geographically) and awesome future employers. I started my journey towards geo aware job finding application by discussing Node.JS basics.

In this post, I would like to serve some companies that offer positions in my field, from the node web server we just created. This means, we need to retrieve them from somewhere. Aha! A database? Well, this could be anything from hard coded JS array, a file and of course – a database. Following this short presentation about using LevelDB with Node.JS I decided to use LevelDB for this tutorial. This turned to be a bad decision. While my tests on Amazon EC2 cluster went very well, installing level on a Windows machine became a sisyphic task. Simply trying

> npm install level

Will fail. Looking at the logs you can see some rants about leveldown failed installation. LevelDB is composed from 2 main packages: levelup – which provide a high level API to the DB, and leveldown which provide the low level hard core DB functions. Trying to follow the instructions on Richard’s blog by installing only levelup:

> npm install levelup

will give a wrong first impression. While the installation goes by ok, the DB will fail on first try:

> var level = require('levelup');
> var db = level('./DatabaseDirectory');
LevelUPError: Could not locate LevelDOWN, try <code>npm install leveldown</code>
    at getLevelDOWN (c:\Dev\node\geojob\node_modules\levelup\lib\util.js:109:11)
    at (c:\Dev\node\geojob\node_modules\levelup\lib\levelup.js:109:37)
    at new LevelUP (c:\Dev\node\geojob\node_modules\levelup\lib\levelup.js:82:8)
    at LevelUP (c:\Dev\node\geojob\node_modules\levelup\lib\levelup.js:44:12)
    at repl:1:10
    at REPLServer.self.eval (repl.js:110:21)
    at repl.js:249:20
    at REPLServer.self.eval (repl.js:122:7)
    at Interface.&lt;anonymous&gt; (repl.js:239:12)
    at Interface.emit (events.js:95:17)

Again, because of our friend leveldown. Trying to install leveldown directly will fail as well.
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