Graphs data from RRD files (collected by JMX collector or similar).
You need to download rrd4j from http://code.google.com/p/rrd4j/ and install it into your local Maven repository.
The easiest way to configure it is using a custom datasources.cfg file (must be in tomcat home), see example below:
# very simple config for a RRD files filled with orders/s (e.g. from DB):
db
sales: Sales/s
rrd=req:/data/rrd/db/sales.rrd:sales
line=req:#000000:total:1
# configuration for host web01 having two tomcat instances:
web01
requests: Requests/s
rrd = req0:/data/rrd/%h/p8080/%n.rrd:%n
rrd = req1:/data/rrd/%h/p8081/%n.rrd:%n
expr = req:req0,req1,+
line = req:#000000:total:1
area = req0:#999999:p8080
area = req1:#aaaaaa:p8081:stack
# The following lines will use exactly the same config for web02-web04
# (replacing %h in the web01 config with host names web02-04)
web02 = web01
web03 = web01
web04 = web01
Building the WAR archive with maven is easy:
mvn package