def _graph(self, period):
"""
Internal call to _graph, I deal with the stuff that gets sent from graph(),
I can be overridden if more custom graphing behavior is required.
I am called every every `config.graph_draw_frequency[period]` seconds.
"""
fmt_dict = {
'period': period,
'filename': self.filename,
'id': self.id,
'timestamp': int(time.time()),
'template': self.template,
}
defers = []
for i, graph in enumerate(self.graph()):
filename = '%s-%s.%i.png' % (self.id, period, i)
defers.append(
rrdtool.graph(
os.path.join(self.factory.stats.config['image_path'], filename),
*[ln % fmt_dict for ln in graph]
).addErrback(
self._graphError, filename
).addCallback(
self._graphSuccess, filename
)
)
return DeferredList(defers, consumeErrors = True)
def _graph(self, period):
fmt_dict = {
'period': period,
'filename': self.filename
}
filename = '%s-%s.0.png' % (self.id, period)
log.msg('Generating graph %r!' % filename, logLevel = logging.DEBUG)
try:
yield rrdtool.graph(
os.path.join(self.factory.stats.config['image_path'], filename),
*list(self.graph(fmt_dict))
)
self.factory.stats.last_draw_timestamp[filename] = int(time.time())
except:
log.err()
