X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=rest%2F__init__.py;h=854c9e8ce58e1632671df37b74a5b3ed88ab9b2a;hb=d251934bd71c678f552dc9a1d49c3f8efe102e1e;hp=6e4edc7e98e30f260a85b8da15f603f31ef443c5;hpb=971a334abbba1210dce367d63b145f5a35cd932b;p=myslice.git diff --git a/rest/__init__.py b/rest/__init__.py index 6e4edc7e..854c9e8c 100644 --- a/rest/__init__.py +++ b/rest/__init__.py @@ -6,80 +6,128 @@ from django.shortcuts import render_to_response from unfold.loginrequired import LoginRequiredView from django.http import HttpResponse -from manifold.core.query import Query, AnalyzedQuery +from manifold.core.query import Query from manifoldapi.manifoldapi import execute_query -from string import join +from string import join + +import decimal +import datetime import json +# handles serialization of datetime in json +DateEncoder = lambda obj: obj.strftime("%B %d, %Y %H:%M:%S") if isinstance(obj, datetime.datetime) else None -def dispatch(request, object_type, object_name): +# support converting decimal in json +json.encoder.FLOAT_REPR = lambda o: format(o, '.2f') - switch = { - 'platform' : platform, - 'slice' : slice, - 'resource' : resource, - 'user' : user - } +# handles decimal numbers serialization in json +class DecimalEncoder(json.JSONEncoder): + def _iterencode(self, o, markers=None): + if isinstance(o, decimal.Decimal): + return (str(o) for o in [o]) + return super(DecimalEncoder, self)._iterencode(o, markers) - # platform is local - if ((object_type == 'platform') or (object_type == 'testbed')) : - object_type = 'local:platform' - object_properties = ['platform', 'platform_longname', 'platform_url', 'platform_description','gateway_type']; - return switch.get('platform', error)(request, object_name, object_properties) - else : - query = Query.get('local:object').filter_by('table', '==', object_type).select('column.name') - results = execute_query(request, query) - if results : - object_properties = [] - for r in results[0]['column'] : - object_properties.append(r['name']) - else : - return error(request, object_name, {}) - return switch.get(object_type, error)(request, object_name, object_properties) +class objectRequest(object): + + def __init__(self, request, object_type, object_name): + self.type = object_type + self.name = object_name + self.properties = [] + self.filters = {} + self.options = None + + self.request = request -# if request.method == 'GET': -# return switch.get(request, object_type, object_name, object_properties) -# elif request.method == 'POST': -# return post(request, object_type, object_name) + # XXX TODO: What about the local: objects? + # Example: local:user (Manifold) is different from user (SFA GW) -def platform(request, object_name, object_properties): - query = Query().get('local:platform').filter_by('disabled', '==', '0').select(object_properties) - return send(request, execute_query(request, query), object_properties) - -def slice(request, object_name, object_properties): - query = Query().get('slice').filter_by('user.user_hrn', '==', '$user_hrn').select(object_properties) - return send(request, execute_query(request, query), object_properties) + if ((self.type == 'platform') or (self.type == 'testbed')) : + self.type = 'local:platform' + self.id = 'platform' + self.properties = ['platform', 'platform_longname', 'platform_url', 'platform_description','gateway_type']; + self.filters['disabled'] = '0' + self.filters['gateway_type'] = 'sfa' + self.filters['platform'] = '!myslice' + else : + self.id = 'hrn' + query = Query.get('local:object').filter_by('table', '==', self.type).select('column.name') + results = execute_query(self.request, query) + if results : + for r in results[0]['column'] : + self.properties.append(r['name']) + else : + return error('db error') + return None + + def addFilters(self, properties): + selected_properties = [] + for p in properties : + if p in self.properties : + selected_properties.append(p) + self.properties = selected_properties + self.setId() + + def setId(self): + if self.id in self.properties : + self.properties.remove(self.id) + [self.id].extend(self.properties) + + def execute(self): + query = Query.get(self.type).select(self.properties) + if self.filters : + for k, f in self.filters.iteritems() : + if (f[:1] == "!") : + query.filter_by(k, '!=', f[1:]) + elif (f[:2] == ">=") : + query.filter_by(k, '>=', f[2:]) + elif (f[:1] == ">") : + query.filter_by(k, '>', f[1:]) + elif (f[:2] == "<=") : + query.filter_by(k, '<=', f[2:]) + elif (f[:1] == "<") : + query.filter_by(k, '<', f[1:]) + else : + query.filter_by(k, '==', f) + return execute_query(self.request, query) -def resource(request, object_name, object_properties): - pass +def dispatch(request, object_type, object_name): + + o = objectRequest(request, object_type, object_name) + + if request.method == 'POST': + req_items = request.POST + elif request.method == 'GET': + req_items = request.GET -def user(request, object_name, object_properties): - query = Query().get('user').filter_by('user_hrn', '==', '$user_hrn').select(object_properties) - return send(request, execute_query(request, query), object_properties) + for el in req_items.items(): + if el[0].startswith('filters'): + o.filters[el[0][8:-1]] = el[1] + elif el[0].startswith('columns'): + o.addFilters(req_items.getlist('columns[]')) + elif el[0].startswith('options'): + o.options = req_items.getlist('options[]') -def send(request, response, object_properties): + response = o.execute() + if request.path.split('/')[1] == 'rest' : response_data = response - return HttpResponse(json.dumps(response_data), content_type="application/json") + return HttpResponse(json.dumps(response_data, cls=DecimalEncoder, default=DateEncoder), content_type="application/json") elif request.path.split('/')[1] == 'table' : - return render_to_response('table-default.html', {'data' : response, 'properties' : object_properties}) + return render_to_response('table-default.html', {'data' : response, 'properties' : o.properties, 'id' : o.id, 'options' : o.options}) elif request.path.split('/')[1] == 'datatable' : response_data = {} - response_data['columns'] = object_properties - response_data['labels'] = object_properties - #response_data['labels'] = [ 'Platform', 'Name', 'Url', 'Description','Gateway Type' ] + response_data['columns'] = o.properties + response_data['labels'] = o.properties response_data['data'] = [] response_data['total'] = len(response) for r in response : d = [] - for p in object_properties : + for p in o.properties : d.append(r[p]) - print d - response_data['data'].append(d) - return HttpResponse(json.dumps(response_data), content_type="application/json") + return HttpResponse(json.dumps(response_data, cls=DecimalEncoder, default=DateEncoder), content_type="application/json") -def error(request, object_name, object_properties): - return HttpResponse(json.dumps({'error' : 'an error has occurred'}), content_type="application/json") \ No newline at end of file +def error(msg): + return HttpResponse(json.dumps({'error' : msg}), content_type="application/json")