metronome
=========
Mini-graphite that uses client-side java script to render graphs w/o depending on graphite.

'metronome' implements the carbon protocol, so anything that can feed Graphite can feed metronome.
We also accept submissions via POST:

For example, to submit RX bytes for eth0:

    while true;
    do
        VAL=$(ip -s link ls eth0 | grep RX -A 1 | tail -1 | awk '{print $1}')
        wget -q --post-data="" "http://127.0.0.1:8000/?do=store&name=rxbytes&timestamp=$(date +%s)&value=$VAL" -O /dev/null
        sleep 1
    done

To retrieve data:

    $ wget http://127.0.0.1:8000/?do=retrieve&name=rxbytes&begin=0&end=$(date +%s)&callback=jsonp

This delivers a JSONP callback with your values in there.

To view, try html/index.html

Installing
==========
Dependencies include a recent g++ (4.7+), Boost and libeigen.

Installing Eigen
----------------
Either install `libeigen3-dev` (Debian, Ubuntu), `eigen3-devel` (Fedora, EPEL).

To install it manually:

    $ wget http://bitbucket.org/eigen/eigen/get/3.2.1.tar.bz2
    $ tar xf 3.2.1.tar.bz2

Compiling
=========

    $ ./bootstrap
    $ ./configure
    $ make

If you installed libeigen manually, use `./configure --with-eigen=/path/to/eigen`

Running
=======

    $ mkdir stats
    $ ./metronome --stats-directory=./stats

Next, host the 'html/' directory somewhere on a webserver, and edit 'html/local.js' so
it knows the Webserver IP address of metronome (port 8000 on :: by default).

Thanks to
=========
Aki Tuomi for the excellent [yahttp](https://github.com/cmouse/yahttp),
[Rickshaw](http://code.shutterstock.com/rickshaw/) for the graphs. [Eigen](http://eigen.tuxfamily.org) for the math. And a cast of thousands for C++2011.

status
======
"Toy" for now - stores all data in flat files, which we read in their entirety to
replay data.

But, starting to look nice.