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#!/usr/bin/env python
import os, sys, time
import sets, cgi, shlex
import ConfigParser
import rrdtool
# TODO: Temporary
if not os.environ.has_key("CONFDIR") or not os.environ.has_key("WORKDIR"):
raise "not setup properly. CONFDIR and WORKDIR env variables must be set"
CONFDIR = os.environ["CONFDIR"]
WORKDIR = os.environ["WORKDIR"]
# We always have this as our current directory.
# It helps when constructing graphs and the like
os.chdir(WORKDIR)
class GraphDef:
filename = None
filedata = None
title = ""
height = 0
width = 0
options = ""
commands = ""
category = ""
name = ""
valid = False
__config = None
def __init__(self, name):
self.filename = "%s/%s" % (CONFDIR, name)
self.filedata = "%s/%s.rrd" % (WORKDIR, name)
self.category = "All"
self.name = name
self.interval = 0
self.valid = False
cfg = self.__config = ConfigParser.RawConfigParser()
cfg.read(self.filename)
# Loading general stuff
if cfg.has_option("general", "title"):
self.title = cfg.get("general", "title")
if cfg.has_option("general", "category"):
self.category = cfg.get("general", "category")
# Loading graph stuff
if cfg.has_section("graph"):
if not cfg.has_option("graph", "commands"):
raise "Missing commands attribute in: %s" % self.filename
self.commands = cfg.get("graph", "commands")
if cfg.has_option("graph", "width"):
self.width = int(cfg.get("graph", "width"))
if cfg.has_option("graph", "height"):
self.height = int(cfg.get("graph", "height"))
if cfg.has_option("graph", "options"):
self.options = cfg.get("graph", "options")
self.valid = True
# Polling stuff
if cfg.has_option("poll", "interval"):
self.interval = cfg.get("poll", "interval")
def loadGraphs(path = ""):
# List files and add appropriate paths
graphs = []
for file in os.listdir(CONFDIR + "/" + path):
if os.path.isdir(CONFDIR + "/" + path + file):
if file != "." and file != "..":
graphs.extend(loadGraphs(path + file + "/"))
continue
graphs.append(GraphDef(path + file))
return graphs
def listGraphs():
graphs = loadGraphs()
categories = {}
groups = categories.keys()
groups.sort()
print "Content-Type: text/xml\n"
print "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
print "<data>"
for item in graphs:
print " <graph name=\"%s\" category=\"%s\" width=\"%d\" height=\"%d\" title=\"%s\" interval=\"%s\"/>" % \
(item.name, item.category, item.width, item.height, item.title, item.interval)
print "</data>"
def displayGraph():
# print "Content-Type: text/plain"
print "Content-Type: image/png"
print ""
form = cgi.FieldStorage()
if not form.has_key("category") or not form.has_key("name"):
raise "Required arguments not specified"
name = form["name"].value
item = GraphDef(name)
# Default to one day display
end = int(time.time())
start = end - 86400
if form.has_key("start"):
start = int(form["start"].value)
if form.has_key("end"):
end = int(form["end"].value)
# Default to Height and Width in graph
height = item.height
width = item.width
if form.has_key("width"):
width = int(form["width"].value)
if form.has_key("height"):
height = int(form["height"].value)
args = ["-", "--imgformat=PNG", "--rigid",
"--start=%d" % start,
"--end=%d" % end,
"--title=%s" % item.title,
"--height=%d" % height,
"--width=%d" % width ]
# TODO Check color syntax
if form.has_key("color"):
colors = form.getlist("color");
for color in colors:
args.append("--color")
args.append(color.replace(":", "#"))
commands = item.commands.replace("{START}",
time.strftime("%Y-%m-%d %H\\:%M", time.localtime(start)))
commands = commands.replace("{END}",
time.strftime("%Y-%m-%d %H\\:%M", time.localtime(end)))
commands = commands.replace("{RRD}", item.filedata)
args.extend(shlex.split(commands))
args.extend(shlex.split(item.options))
print >> sys.stderr, str(args)
rrdtool.graph(*args)
if os.environ.has_key("PATH_INFO"):
path = os.environ["PATH_INFO"].strip("/")
else:
path = ""
parts = path.split("/")
method = parts[0]
del parts[0]
if not method:
method = "list"
if method == "list":
listGraphs()
elif method == "graph":
displayGraph()
else:
raise "Invalid request: %s" % method
|
