def context_view(request):
if request.method == 'GET':
contexts = []
if not 'metric' not in request.GET:
return HttpResponse('{ "error" : "missing required parameter \"metric\"" }', mimetype='application/json')
for metric in request.GET.getlist('metric'):
try:
context = STORE.get(metric).context
except:
contexts.append({ 'metric' : metric, 'error' : 'failed to retrieve context', 'traceback' : traceback.format_exc() })
else:
contexts.append({ 'metric' : metric, 'context' : context })
content = json.dumps( { 'contexts' : contexts } )
return HttpResponse(content, mimetype='application/json')
elif request.method == 'POST':
if 'metric' not in request.POST:
return HttpResponse('{ "error" : "missing required parameter \"metric\"" }', mimetype='application/json')
newContext = dict( item for item in request.POST.items() if item[0] != 'metric' )
for metric in request.POST.getlist('metric'):
STORE.get(metric).updateContext(newContext)
return HttpResponse('{ "success" : true }', mimetype='application/json')
else:
return HttpResponseBadRequest("invalid method, must be GET or POST")
def find_metric(request):
"""Autocomplete helper on metric names."""
try:
query = str( request.REQUEST['q'] )
except:
return HttpResponseBadRequest(
content="Missing required parameter 'q'", mimetype="text/plain")
matches = list( STORE.find(query+"*") )
content = "\n".join([node.metric_path for node in matches ])
response = HttpResponse(content, mimetype='text/plain')
return response
def completePath(path, shortnames=False):
# Have to extract the path expression from the command
for prefix in ('draw ','add ','remove '):
if path.startswith(prefix):
path = path[len(prefix):]
break
pattern = re.sub('\w+\(','',path).replace(')','') + '*'
results = []
for match in STORE.find(pattern):
if shortnames:
results.append(match.name)
else:
results.append(match.metric_path)
list_items = ["<li>%s</li>" % r for r in results]
list_element = "<ul>" + '\n'.join(list_items) + "</ul>"
return list_element
