bieber.js

// Drives the Bieber-graph at http://awesometown.no.de.
// Run through a recent-ish version of node.js.

var sys = require('sys'),
    http = require('http'),
    twitter = http.createClient(80, 'search.twitter.com'),
    twitterPath = "/search.json?&q=bieber",
    chartId = "4c7a650eba12e9c41d000005",
    interval = 5000,
    lastId = null;

function postValue(id, value) {
  var req, http = require('http'),
      simulchart = http.createClient(80, 'awesometown.no.de'),
      simulchartPath = "/graphs/" + id + "/appendValue",
      body = "value=" + value,
      headers = { "Host": simulchart.host,
                  "Content-Length": body.length,
                  "Content-Type": "application/x-www-form-urlencoded"};

  req = simulchart.request('POST', simulchartPath, headers);
  req.write(body);
  req.end(); 
}

function update() {
  var count, results, req, reqPath, body = "";

  reqPath = lastId ? twitterPath + "&since_id=" + lastId : twitterPath;

  req = twitter.request('GET', reqPath, {"Host": twitter.host});
  req.end();
  req.on('response', function (res) {
    res.on('data', function(chunk) {
      body += chunk;
    });
    res.on('end', function() {
      results = JSON.parse(body).results;
      if (results) {
        count = results.length;
        console.log("Saw " + count + " tweets"); 
        if (results[0]) lastId = results[0].id;
        postValue(chartId, count);
      }
      setTimeout(update, interval);
    });
  });
}

update();

load.sh

#!/bin/bash

# cut/awk combo reads solaris style output, cause that's what joyent is.

while true; do
  curl -d value=`uptime | cut -d':' -f3 | cut -d, -f1 | awk '{print $1}'` http://awesometown.no.de/graphs/4c7acd5ca121636840000002/appendValue
  sleep 1
done