var sys		= require("sys"),
	http	= require("http"),
	ws		= require('./deps/node-websocket-server/lib/ws'),
	fs		= require("fs");

var iostat = require("child_process").spawn("iostat",["-w 1"]);
var httpServer = http.createServer();
var server = ws.createServer({debug:true},httpServer);

// Format iostat date
function format (data){
	var output_data = data.toString();
	console.log(output_data);
	header = 'disk0            cpu       load average';
	if (output_data.match(header)){
		console.log("ignore header");
	}else{
		var output_array = output_data.replace(/^\s+|\s+$/g,"").split(/\s+/);
		for (var i=0; i < output_array.length; i++){
			output_array[i] = parseFloat( output_array[i]);
		};
		output_hash = {
			date:new Date(),
				 disk:{
					kpt:output_array[0],
					tps:output_array[1],
					mbs:output_array[2]
				},
				cpu:{
					us:output_array[3],
					sy:output_array[4],
					id:output_array[5]
				},
				load_average:{
					m1:output_array[6],
					m5:output_array[7],
					m15:output_array[8]
				}
		}
		return JSON.stringify(output_hash);
	}
}
server.addListener("connection",function(conn){
		console.log("opened connection: "+conn.id);
		server.send(conn.id,"connected as:"+conn.id);
		iostat.stdout.on('data',function(data){
			console.log(typeof(data));
			console.log('stdout: '+data);
			console.log('stdout: '+format(data));
			server.send(conn.id, format(data));
		});
		server.send(conn.id, "Connected as: "+conn.id);
});
server.addListener("close",function(conn){
		console.log("closed connection: "+conn.id);
		conn.broadcast("<"+conn.id+"> disconnected");
});
server.listen(9000);

This code allows you to stream iostat’s output over a http server on port 9000 to read by a client html file and js script. Its pretty neat because you can pass that information in to a graphing library like Protovis Graphing. With the addition of web-sockets that means you can have real time CPU information streaming to a web browser. Works great when you have systems where you really want to know how say a MySQL query is effecting the system itself. You should really give it a try.

# Processor this will send the incoming message to /dev/null after sending a auto reply
:0 h c
* !^FROM_DAEMON
* !^FROM_MAILER
* !^X-Loop: $SENDER
| (formail -r -A"FROM:$SENDER" -A"X-Loop: $SENDER" -I"Subject:$SUBJECT";\
cat $HOME/$FILE) | $SENDMAIL -t
:0
/dev/null

Lets break this done in to sections. First we have is this:

SENDER=help@example.com
SUBJECT="Our Support information has changed"
FILE=.autoreply_mesg

In this section we are setting the SENDER which is the email address that we want the message to look like. SUBJECT is the Subject we want to replace the RE: blah blah with something that is informational. FILE is the name if the file containing our message. In the next section we have the following bits:

:0 h c
* !^FROM_DAEMON
* !^FROM_MAILER
* !^X-Loop: $SENDER
| (formail -r -A"FROM:$SENDER" -A"X-Loop: $SENDER" -I"Subject:$SUBJECT";\
cat $HOME/$FILE) | $SENDMAIL -t

:0
/dev/null

So at first this looks cryptic but lets break it down line by line. So frist we have the :0 to accept anything then h and c tell procmail to keep a copy of the email just in case we need to process it more then in just this one block. * !^FROM_DAEMON says if its not from a daemon then proceed tot he next step. * !^FROM_MAILER means if not from a auto mailer aka mailing lists then proceed to the next step. * !^X-Loop: this mean is that if not a mail loop then proceed to next step. Which is the formail command. Let break this down by options, first we have -r which mean Generate an auto-reply header. This will normally throw away all the existing fields, then we have -A which allows us to apply custom information to the header fields, -I that any existing similar fields are simply removed. then we are cat’ing the auto reply file in the body of the message and then passing it off to the sendmail to send the file.

I wrote a simple application with it in about 30 minutes but the only reason i took at look was because the documentation is so good its like reading a book with a map. It has everything you would ever need but json-rpc and xml-rpc. Since this flourish library is in beta it might have those features soon or even just down the road. its pretty stable write now only a few bugs here and there but nothing major with patches all the time. So check it out.

I went to boston a few weeks ago to meet up with lucas and BP. We had a blast in boston for the weekend. We went to The People Republic, a Brizallian BBQ place where the girl that was our waitress was drop dead hot. We even did the Sam Adams tour was cool because we all got glasses from the tasting. It was cool to be in the boston pubs when the soxs are playing becuase it becomes alive and its like if everyone in the bar is cheering for the same thing. So that I believe brings us up to date.

1. My Job
2. Potential new project
3. Pneumonia
4. Projects

Ok, My job is interesting I have to deal with some intresting problems and not so cool things. I have been working my butt off doing things at my job that isn’t Code Releated and I have to say I’m starting to miss coding a lot.  Its been so long since the last time I have to code anything I have started to forget some of the simple things that I knew like the back of my hand. Other then missing coding, I have been doing a lot of stuff with Wireless Networks at work and Phone Systems I’m starting to get envoled with.

I might have the chance to work with AGIS,Inc and there LifeRing Application. Due to NDA’s and Confinidentuality agreements I can’t say much other then I have the chance to build a web interface for anyliss for it and the GOV. So thats all i can into for detail.

I came down with pneumonia this pass weekend and have been laid up on the couch since friday night. Which sucks because I hate not working when I know I can. I thought it was kinda odd, since this past friday we start bowling in a league under the name “The 4 Horse Men”.

I’m also working on a windows mobile application for tracking employees from there mobile device. I have been playing with trackme which is a applicaiton that basically does what I want with a little more. Except its a massive eater of battery on my HTC Titan Phone and the User can close the application. So Idea behind the one I’m writing runs a service in the background and stores 5 positions in a xml file then makes a data connection and pushes them to a database server then disconnects the phone from the data connection. This would make it a little more efficent on battery power. I’m working on a web interface for it that uses google maps to display and analize the data points.

So thats where I’m at this Point. I’m looking for more programming projects. Due to the Fact I miss it to much. My brain doesn’t feel like its getting much use doing IT work with any Programming for it to do. Nap time to so I can go to work tomorrow.

End of my Rant! improvements to software is good as long as the user doesn’t feel like they have to learn something totally new.

Also my buddy jeremy has introduced me to a lot of new music of the past couple of months and I have to say his latest find is awesome. The band is call the Old Crow Medicine Show below is a video clip of it. Its a got a turn of the century sound to them.

Old Crow Medicine Show — Wagon Wheel