5 from django.http import HttpResponse
7 from manifold.core.query import Query
8 from manifoldapi.manifoldapi import execute_query
10 from myslice.settings import logger
12 # handles serialization of datetime in json
13 DateEncoder = lambda obj: obj.strftime("%B %d, %Y %H:%M:%S") if isinstance(obj, datetime.datetime) else None
15 # support converting decimal in json
16 json.encoder.FLOAT_REPR = lambda o: format(o, '.2f')
18 # handles decimal numbers serialization in json
19 class DecimalEncoder(json.JSONEncoder):
20 def _iterencode(self, o, markers=None):
21 if isinstance(o, decimal.Decimal):
22 return (str(o) for o in [o])
23 return super(DecimalEncoder, self)._iterencode(o, markers)
25 class ObjectRequest(object):
27 def __init__(self, request, object_type, object_name):
28 self.type = object_type
29 self.name = object_name
35 self.request = request
37 if ((self.type == 'platform') or (self.type == 'testbed')) :
38 self.type = 'local:platform'
40 self.fields = ['platform', 'platform_longname', 'platform_url', 'platform_description','gateway_type'];
41 self.filters['disabled'] = '0'
42 self.filters['gateway_type'] = 'sfa'
43 self.filters['platform'] = '!myslice'
44 #elif(self.type.startswith('local:')):
45 elif ':' in self.type:
46 table = self.type.split(':')
50 # XXX TODO: find a generic Query to get the fields like
51 # select column.name from local:object where table == local:user
52 table = self.type.split(':')
55 self.id = table + '_id'
56 self.fields = ['user_id', 'email', 'password', 'config','status'];
57 elif table == "account":
58 # XXX TODO: Multiple key for account = (platform_id, user_id)
59 self.id = "platform_id, user_id"
60 self.fields = ['platform_id', 'user_id', 'auth_type', 'config'];
61 elif table == "platform":
63 self.fields = ['platform', 'platform_longname', 'platform_url', 'platform_description','gateway_type'];
65 # If we use prefix, set the key without the prefix then add it again
69 self.type = prefix + ':' + table
75 # What about key formed of multiple fields???
76 query = Query.get('local:object').filter_by('table', '==', self.type).select('key')
77 results = execute_query(self.request, query)
78 logger.debug("key of object = {}".format(results))
80 for r in results[0]['key'] :
83 raise Exception, 'Manifold db error'
85 def setLocalFields(self):
86 query = Query.get('local:object').filter_by('table', '==', self.type).select('column.name')
87 results = execute_query(self.request, query)
89 for r in results[0]['column'] :
90 self.fields.append(r['name'])
92 raise Exception, 'Manifold db error'
94 def setFields(self, fields):
95 # selected_fields = []
97 # if p in self.fields :
98 # selected_fields.append(p)
102 def applyFilters(self, query, force_filters = False):
103 if (force_filters and not self.filters) :
104 raise Exception, "Filters required"
106 for k, f in self.filters.iteritems() :
108 query.filter_by(k, '!=', f[1:])
109 elif (f[:2] == ">=") :
110 query.filter_by(k, '>=', f[2:])
111 elif (f[:1] == ">") :
112 query.filter_by(k, '>', f[1:])
113 elif (f[:2] == "<=") :
114 query.filter_by(k, '<=', f[2:])
115 elif (f[:1] == "<") :
116 query.filter_by(k, '<', f[1:])
117 elif (f[:8] == "CONTAINS") :
118 query.filter_by(k, 'CONTAINS', f[8:])
120 query.filter_by(k, '==', f)
124 query = Query.get(self.type)
125 if (self.id is not None) and (self.id not in self.fields) :
126 query.select(self.fields + [self.id])
128 query.select(self.fields)
130 query = self.applyFilters(query)
131 return execute_query(self.request, query)
134 query = Query.create(self.type)
135 # No filters for create
137 for p in self.params :
138 for k,v in p.iteritems() :
139 logger.debug("param: {} : {}".format(k, v))
141 logger.debug("query = {}".format(query))
143 raise Exception, "Params are required for create"
144 return execute_query(self.request, query)
147 query = Query.update(self.type)
148 query = self.applyFilters(query, True)
151 for p in self.params :
152 for k,v in p.iteritems() :
153 logger.debug("param: {} : {}".format(k, v))
155 logger.debug("query = {}".format(query))
157 raise Exception, "Params are required for update"
159 if self.id is not None:
160 query.select(self.id)
162 return execute_query(self.request, query)
165 query = Query.delete(self.type)
166 query = self.applyFilters(query, True)
168 query.set(self.filters)
170 raise Exception, "Filters are required for delete"
171 return execute_query(self.request, query)
174 return HttpResponse(json.dumps(self.get(), cls=DecimalEncoder, default=DateEncoder), content_type="application/json")
177 response = self.get()
179 response_data['fields'] = self.fields
180 response_data['labels'] = self.fields
181 response_data['data'] = []
182 response_data['total'] = len(response)
185 for p in self.fields :
187 response_data['data'].append(d)
189 return HttpResponse(json.dumps(response_data, cls=DecimalEncoder, default=DateEncoder), content_type="application/json")
192 return HttpResponse(json.dumps({'error' : msg}), content_type="application/json")
195 return HttpResponse(json.dumps({'success' : msg}), content_type="application/json")