analog - Instrumentation of the Node.js request object for analytics

Makes it easy to collect data optimized for site analytics using whatever existing logging system you have.

Usage

var instrument = new (analog.Analog)();

var interaction_metadata = instrument.transform(request, response, response_body);

The above results in a flat dictionary of request data like the one below:

{ request.socket.bufferSize=0, request.socket.fd=8, request.socket.type=tcp4, request.socket.allowHalfOpen=true, request.socket.destroyed=false, request.socket.readable=true, request.socket.writable=true, request.socket.remoteAddress=64.119.130.114, request.socket.remotePort=57001, request.socket._idleTimeout=120000, request.socket._idleStart=Thu Jun 02 2011 20:34:03 GMT+0000 (UTC), request.connection.bufferSize=0, request.connection.fd=8, request.connection.type=tcp4, request.connection.allowHalfOpen=true, request.connection.destroyed=false, request.connection.readable=true, request.connection.writable=true, request.connection.remoteAddress=64.119.130.114, request.connection.remotePort=57001, request.connection._idleTimeout=120000, request.connection._idleStart=Thu Jun 02 2011 20:34:03 GMT+0000 (UTC), request.httpVersion=1.1, request.complete=true, request.headers.host=some-dev-server.com:8000, request.headers.connection=keep-alive, request.headers.accept=/, request.headers.user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.68 Safari/534.24, request.headers.accept-encoding=gzip,deflate,sdch, request.headers.accept-language=en-US,en;q=0.8, request.headers.accept-charset=ISO-8859-1,utf-8;q=0.7,;q=0.3, request.headers.cookie=******, request.readable=true, request.url=/, request.method=GET, request.client.bufferSize=0, request.client.fd=8, request.client.type=tcp4, request.client.allowHalfOpen=true, request.client.destroyed=false, request.client.readable=true, request.client.writable=true, request.client.remoteAddress=64.119.130.114, request.client.remotePort=57001, request.client._idleTimeout=120000, request.client._idleStart=Thu Jun 02 2011 20:34:03 GMT+0000 (UTC), request.httpVersionMajor=1, request.httpVersionMinor=1, request.upgrade=false }