def render_metric(request, metric, object_list):
"""
Renders the total for the given metric.
"""
# validate input
form = GraphForm(request.GET)
if not form.is_valid():
return HttpResponseBadRequest()
color = metric.graph_color
if not color:
color = '#990033'
count = 0
options = []
type = 'AREA'
for obj in object_list:
data_file = metric.rrd_path(obj)
if os.path.exists(data_file):
options += [
'DEF:%s=%s:%s:AVERAGE' % (count, data_file, metric.pk),
'%s:%s%s' % (type, count, color)]
type = 'STACK'
count += 1
# if no RRDs were found stop here
if not count:
raise Http404
options += form.options()
image_data = timegraph_rrd(options)
return HttpResponse(image_data, content_type='image/png')
def render_metric(request, metric, object_list):
"""
Renders the total for the given metric.
"""
# validate input
form = GraphForm(request.GET)
if not form.is_valid():
return HttpResponseBadRequest()
color = metric.graph_color
if not color:
color = '#990033'
count = 0
options = []
type = 'AREA'
for obj in object_list:
data_file = metric._rrd_path(obj)
if os.path.exists(data_file):
options += [
'DEF:%s=%s:%s:AVERAGE' % (count, data_file, metric.pk),
'%s:%s%s' % (type, count, color)]
type = 'STACK'
count += 1
# if no RRDs were found stop here
if not count:
raise Http404
options += form.options()
image_data = timegraph_rrd(options)
return HttpResponse(image_data, content_type='image/png')
def render_graph(request, graph, obj):
"""
Renders the specified graph.
"""
# validate input
form = GraphForm(request.GET)
if not form.is_valid():
return HttpResponseBadRequest()
count = 0
options = []
if graph.is_stacked:
stack = ':STACK'
else:
stack = ''
is_memory = False
for metric in graph.metrics.order_by('graph_order'):
if metric.unit in ['b', 'B']:
is_memory = True
data_file = metric.rrd_path(obj)
value = metric.get_polling(obj)
if os.path.exists(data_file):
color = metric.graph_color
if not color:
color = COLORS[count % len(COLORS)]
# current value
value_str = format_value(value, metric.unit)
if value_str:
value_str = ' | ' + value_str
options += [
'DEF:%s=%s:%s:AVERAGE' % (count, data_file, metric.pk),
'%s:%s%s:%s%s%s' % (graph.type, count, color, metric.name, value_str, stack)]
count += 1
# if no RRDs were found stop here
if not count:
raise Http404
if is_memory:
options += ['--base', '1024']
if graph.lower_limit is not None:
options += [ '--lower-limit', str(graph.lower_limit) ]
options += [ '-r' ]
if graph.upper_limit is not None:
options += [ '--upper-limit', str(graph.upper_limit) ]
options += form.options()
image_data = timegraph_rrd(options)
return HttpResponse(image_data, content_type='image/png')
def render_graph(request, graph, obj):
"""
Renders the specified graph.
"""
# validate input
form = GraphForm(request.GET)
if not form.is_valid():
return HttpResponseBadRequest()
count = 0
options = []
if graph.is_stacked:
stack = ':STACK'
else:
stack = ''
is_memory = False
for metric in graph.metrics.order_by('graph_order'):
if metric.unit in ['b', 'B']:
is_memory = True
data_file = metric._rrd_path(obj)
value = metric.get_polling(obj)
if os.path.exists(data_file):
color = metric.graph_color
if not color:
color = COLORS[count % len(COLORS)]
# current value
value_str = format_value(value, metric.unit)
if value_str:
value_str = ' | ' + value_str
options += [
'DEF:%s=%s:%s:AVERAGE' % (count, data_file, metric.pk),
'%s:%s%s:%s%s%s' % (graph.type, count, color, metric.name, value_str, stack)]
count += 1
# if no RRDs were found stop here
if not count:
raise Http404
if is_memory:
options += ['--base', '1024']
if graph.lower_limit is not None:
options += [ '--lower-limit', str(graph.lower_limit) ]
options += [ '-r' ]
if graph.upper_limit is not None:
options += [ '--upper-limit', str(graph.upper_limit) ]
options += form.options()
image_data = timegraph_rrd(options)
return HttpResponse(image_data, content_type='image/png')
