Initial commit

[ta/distributed-state-server.git] / src / dss / client / dss_client.py

diff --git a/src/dss/client/dss_client.py b/src/dss/client/dss_client.py
new file mode 100644 (file)
index 0000000..7277804
--- /dev/null
+++ b/src/dss/client/dss_client.py
@@ -0,0 +1,97 @@
+# Copyright 2019 Nokia
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from dss.api import dss_error
+from dss.api import dss_msg
+from dss.api import dss_get_rpc
+from dss.api import dss_set_rpc
+from dss.api import dss_get_domain_rpc
+from dss.api import dss_get_domains_rpc
+from dss.api import dss_delete_rpc
+from dss.api import dss_delete_domain_rpc
+
+import socket
+
+class Client(object):
+    def __init__(self, uds):
+        self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+
+        self.server_address = uds
+        self.connect = True
+        self.fd = None
+        self.id = 0
+
+    def _connect(self):
+        if self.connect:
+            self.sock.connect(self.server_address)
+            self.fd = self.sock.makefile('rw')
+            self.connect = False
+
+    def _call_rpc(self, msg):
+        self.id += 1
+        repmsg = dss_msg.Msg()
+        try:
+            self._connect()
+            req = msg.serialize()
+            self.sock.sendall(req+'\n')
+            rep = self.fd.readline()
+        except Exception as exp:
+            try:
+                self.sock.close()
+            except:
+                pass
+            self.connect = True
+            raise dss_error.Error(str(exp))
+        repmsg.deserialize(rep)
+        return repmsg
+
+    def get(self, domain, name):
+        reqpayload = dss_get_rpc.GetRPC.create_req_payload(domain, name)
+        reqmsg = dss_msg.Msg(dss_get_rpc.GetRPC.get_name(), self.id, reqpayload)
+        repmsg = self._call_rpc(reqmsg)
+        reppayload = repmsg.get_payload()
+        value = dss_get_rpc.GetRPC.get_value_from_rep_payload(reppayload)
+        return value
+        
+    def get_domain(self, domain):
+        reqpayload = dss_get_domain_rpc.GetDomainRPC.create_req_payload(domain)
+        reqmsg = dss_msg.Msg(dss_get_domain_rpc.GetDomainRPC.get_name(), self.id, reqpayload)
+        repmsg = self._call_rpc(reqmsg)
+        reppayload = repmsg.get_payload()
+        attrs = dss_get_domain_rpc.GetDomainRPC.get_data_from_rep_payload(reppayload)
+        return attrs
+
+
+    def set(self, domain, name, value):
+        reqpayload = dss_set_rpc.SetRPC.create_req_payload(domain, name, value)
+        reqmsg = dss_msg.Msg(dss_set_rpc.SetRPC.get_name(), self.id, reqpayload)
+        repmsg = self._call_rpc(reqmsg)
+
+    def get_domains(self):
+        reqmsg = dss_msg.Msg(dss_get_domains_rpc.GetDomainsRPC.get_name(), self.id, None)
+        repmsg = self._call_rpc(reqmsg)
+        reppayload = repmsg.get_payload()
+        domains = dss_get_domains_rpc.GetDomainsRPC.get_data_from_rep_payload(reppayload)
+        return domains
+
+    def delete(self, domain, name):
+        reqpayload = dss_delete_rpc.DeleteRPC.create_req_payload(domain, name)
+        reqmsg = dss_msg.Msg(dss_delete_rpc.DeleteRPC.get_name(), self.id, reqpayload)
+        repmsg = self._call_rpc(reqmsg)
+
+    def delete_domain(self, domain):
+        reqpayload = dss_delete_domain_rpc.DeleteDomainRPC.create_req_payload(domain)
+        reqmsg = dss_msg.Msg(dss_delete_domain_rpc.DeleteDomainRPC.get_name(), self.id, reqpayload)
+        repmsg = self._call_rpc(reqmsg)