def summary(self, gopts):
"""
Return summary information as a list but no graph
@param gopts: RRD graph options
@return: values from the graph
"""
gopts = fixMissingRRDs(gopts)
# Change space to _ in RRD variable names
def fixRRDvarName(gopt):
if gopt.startswith('DEF'):
# file name can have spaces, just not the RRD variables
defparts = []
defparts = gopt.split('=',2)
defparts[0] = defparts[0].replace(' ','_')
gopt = '='.join(defparts)
else:
gopt = gopt.replace(' ','_')
return gopt
gopts = map(fixRRDvarName,gopts)
gopts.insert(0, '/dev/null') #no graph generated
log.debug("RRD summary options: %r", (gopts,))
try:
@rrd_daemon_retry
def rrdtool_fn():
return rrdtool.graph(*(gopts+list(rrd_daemon_args())))[2]
values = rrdtool_fn()
except Exception, ex:
if ex.args[0].find('No such file or directory') > -1:
return None
log.exception("Failed while generating summary")
log.warn(" ".join(gopts))
raise
def summary(self, gopts):
"""
Return summary information as a list but no graph
@param gopts: RRD graph options
@return: values from the graph
"""
gopts = fixMissingRRDs(gopts)
gopts.insert(0, '/dev/null') #no graph generated
log.debug("RRD summary options: %r", (gopts,))
try:
@rrd_daemon_retry
def rrdtool_fn():
return rrdtool.graph(*(gopts+list(rrd_daemon_args())))[2]
values = rrdtool_fn()
except Exception, ex:
if ex.args[0].find('No such file or directory') > -1:
return None
log.exception("Failed while generating summary")
log.warn(" ".join(gopts))
raise
def summary(self, gopts):
"""
Return summary information as a list but no graph
@param gopts: RRD graph options
@return: values from the graph
"""
gopts = fixMissingRRDs(gopts)
# Change space to _ in RRD variable names
def fixRRDvarName(gopt):
if gopt.startswith('DEF'):
# file name can have spaces, just not the RRD variables
defparts = []
defparts = gopt.split('=', 2)
defparts[0] = defparts[0].replace(' ', '_')
gopt = '='.join(defparts)
else:
gopt = gopt.replace(' ', '_')
return gopt
gopts = map(fixRRDvarName, gopts)
gopts.insert(0, '/dev/null') #no graph generated
log.debug("RRD summary options: %r", (gopts, ))
try:
@rrd_daemon_retry
def rrdtool_fn():
return rrdtool.graph(*(gopts + list(rrd_daemon_args())))[2]
values = rrdtool_fn()
except Exception, ex:
if ex.args[0].find('No such file or directory') > -1:
return None
log.exception("Failed while generating summary")
log.warn(" ".join(gopts))
raise
def render(self, gopts=None, start=None, end=None, drange=None,
remoteUrl=None, width=None, ftype='PNG', getImage=True,
graphid='', comment=None, ms=None, remoteHost=None, REQUEST=None, zenrenderRequest=None):
"""
Render a graph and return it
@param gopts: RRD graph creation options
@param start: requested start of data to graph
@param end: requested start of data to graph
@param drange: min/max values of the graph
@param remoteUrl: if the RRD is not here, where it lives -DEPRECATED use remoteHost instead
@param width: size of graphic to create
@param ftype: file type of graphic (eg PNG)
@param getImage: return the graph or a script location
@param graphid: (hopefully) unique identifier of a graph
@param comment: RRD graph comment
@param ms: a timestamp used to force IE to reload images
@param remoteHost: Forward current RRD request to renderserver at remoteHost. eg http://remotezenrender:8091/
@param REQUEST: URL-marshalled object containg URL options
@return: graph or script location
"""
# gopts may have repeated url quoting, possibly from multiple hops thru remote zenhubs
# extra quoting will create invalid zlib padding characters ('%3D' instead of '=')
for tries in range(3):
try:
gopts = zlib.decompress(urlsafe_b64decode(gopts))
except Exception:
gopts = urllib.unquote(gopts)
else:
break
comment = urllib.unquote(comment) if comment is not None else ''
gopts = gopts.split('|')
gopts = fixMissingRRDs(gopts)
gopts.append('HRULE:INF#00000000')
gopts.append('--width=%s' % width)
if start:
gopts.append('--start=%s' % start)
if end:
gopts.append('--end=%s' % end)
drange = int(drange)
id = self.graphId(gopts, drange, ftype)
graph = self.getGraph(id, ftype, REQUEST)
if not graph:
if not os.path.exists(self.tmpdir):
os.makedirs(self.tmpdir, 0750)
fd, filename = tempfile.mkstemp(dir=self.tmpdir, suffix=id)
if remoteHost or remoteUrl:
if remoteHost:
encodedOpts = urlsafe_b64encode(
zlib.compress('|'.join(gopts), 9))
params = {
'gopts': encodedOpts,
'drange': drange,
'width': width,
}
remote = "%s/render?%s" %(remoteHost, urlencode(params))
else:
remote = remoteUrl
f = open(filename, "w")
response = urllib.urlopen(remote).read()
f.write(response)
f.close()
else:
if ftype.lower()=='html':
imgtype = 'PNG'
else:
imgtype = ftype
gopts.insert(0, "--imgformat=%s" % imgtype)
#gopts.insert(0, "--lazy")
end = int(time.time())-300
start = end - drange
if comment is not None:
gopts.insert(0, 'COMMENT:%s\\c' % comment)
gopts.insert(0, '--end=%d' % end)
gopts.insert(0, '--start=%d' % start)
gopts.insert(0, filename)
log.debug("RRD graphing options: %r", (gopts,))
try:
@rrd_daemon_retry
def rrdtool_fn():
rrdtool.graph(*(gopts + list(rrd_daemon_args())))
rrdtool_fn()
except Exception, ex:
if ex.args[0].find('No such file or directory') > -1:
return None
log.exception("Failed to generate a graph")
log.warn(" ".join(gopts))
return None
self.addGraph(id, filename, fd)
graph = self.getGraph(id, ftype, REQUEST)
