src/dss/client/dss_client.py

   1 # Copyright 2019 Nokia
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 #
  15
  16 from dss.api import dss_error
  17 from dss.api import dss_msg
  18 from dss.api import dss_get_rpc
  19 from dss.api import dss_set_rpc
  20 from dss.api import dss_get_domain_rpc
  21 from dss.api import dss_get_domains_rpc
  22 from dss.api import dss_delete_rpc
  23 from dss.api import dss_delete_domain_rpc
  24
  25 import socket
  26
  27 class Client(object):
  28     def __init__(self, uds):
  29         self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
  30
  31         self.server_address = uds
  32         self.connect = True
  33         self.fd = None
  34         self.id = 0
  35
  36     def _connect(self):
  37         if self.connect:
  38             self.sock.connect(self.server_address)
  39             self.fd = self.sock.makefile('rw')
  40             self.connect = False
  41
  42     def _call_rpc(self, msg):
  43         self.id += 1
  44         repmsg = dss_msg.Msg()
  45         try:
  46             self._connect()
  47             req = msg.serialize()
  48             self.sock.sendall(req+'\n')
  49             rep = self.fd.readline()
  50         except Exception as exp:
  51             try:
  52                 self.sock.close()
  53             except:
  54                 pass
  55             self.connect = True
  56             raise dss_error.Error(str(exp))
  57         repmsg.deserialize(rep)
  58         return repmsg
  59
  60     def get(self, domain, name):
  61         reqpayload = dss_get_rpc.GetRPC.create_req_payload(domain, name)
  62         reqmsg = dss_msg.Msg(dss_get_rpc.GetRPC.get_name(), self.id, reqpayload)
  63         repmsg = self._call_rpc(reqmsg)
  64         reppayload = repmsg.get_payload()
  65         value = dss_get_rpc.GetRPC.get_value_from_rep_payload(reppayload)
  66         return value
  67
  68     def get_domain(self, domain):
  69         reqpayload = dss_get_domain_rpc.GetDomainRPC.create_req_payload(domain)
  70         reqmsg = dss_msg.Msg(dss_get_domain_rpc.GetDomainRPC.get_name(), self.id, reqpayload)
  71         repmsg = self._call_rpc(reqmsg)
  72         reppayload = repmsg.get_payload()
  73         attrs = dss_get_domain_rpc.GetDomainRPC.get_data_from_rep_payload(reppayload)
  74         return attrs
  75
  76
  77     def set(self, domain, name, value):
  78         reqpayload = dss_set_rpc.SetRPC.create_req_payload(domain, name, value)
  79         reqmsg = dss_msg.Msg(dss_set_rpc.SetRPC.get_name(), self.id, reqpayload)
  80         repmsg = self._call_rpc(reqmsg)
  81
  82     def get_domains(self):
  83         reqmsg = dss_msg.Msg(dss_get_domains_rpc.GetDomainsRPC.get_name(), self.id, None)
  84         repmsg = self._call_rpc(reqmsg)
  85         reppayload = repmsg.get_payload()
  86         domains = dss_get_domains_rpc.GetDomainsRPC.get_data_from_rep_payload(reppayload)
  87         return domains
  88
  89     def delete(self, domain, name):
  90         reqpayload = dss_delete_rpc.DeleteRPC.create_req_payload(domain, name)
  91         reqmsg = dss_msg.Msg(dss_delete_rpc.DeleteRPC.get_name(), self.id, reqpayload)
  92         repmsg = self._call_rpc(reqmsg)
  93
  94     def delete_domain(self, domain):
  95         reqpayload = dss_delete_domain_rpc.DeleteDomainRPC.create_req_payload(domain)
  96         reqmsg = dss_msg.Msg(dss_delete_domain_rpc.DeleteDomainRPC.get_name(), self.id, reqpayload)
  97         repmsg = self._call_rpc(reqmsg)