T1598: initial implementation of the hosts keeper daemon.

Conflicts:
	debian/control

1 files changed, 56 insertions, 0 deletions

diff --git a/python/vyos/hostsd_client.py b/python/vyos/hostsd_client.py
new file mode 100644
index 000000000..e02aefe6f
--- /dev/null
+++ b/python/vyos/hostsd_client.py
@@ -0,0 +1,56 @@
+import json
+
+import zmq
+
+
+SOCKET_PATH = "ipc:///run/vyos-hostsd.sock"
+
+
+class VyOSHostsdError(Exception):
+    pass
+
+
+class Client(object):
+    def __init__(self):
+        context = zmq.Context()
+        self.__socket = context.socket(zmq.REQ)
+        self.__socket.RCVTIMEO = 10000 #ms
+        self.__socket.setsockopt(zmq.LINGER, 0)
+        self.__socket.connect(SOCKET_PATH)
+
+    def _communicate(self, msg):
+        request = json.dumps(msg).encode()
+        self.__socket.send(request)
+
+        reply_msg = self.__socket.recv().decode()
+        reply = json.loads(reply_msg)
+        if 'error' in reply:
+            raise VyOSHostsdError(reply['error'])
+
+    def set_host_name(self, host_name, domain_name, search_domains):
+        msg = {
+            'type': 'host_name',
+            'op': 'set',
+            'data': {
+                'host_name': host_name,
+                'domain_name': domain_name,
+                'search_domains': search_domains
+            }
+        }
+        self._communicate(msg)
+
+    def add_hosts(self, tag, hosts):
+        msg = {'type': 'hosts', 'op': 'add',  'tag': tag, 'data': hosts}
+        self._communicate(msg)
+
+    def delete_hosts(self, tag):
+        msg = {'type': 'hosts', 'op': 'delete', 'tag': tag}
+        self._communicate(msg)
+
+    def add_name_servers(self, tag, servers):
+        msg = {'type': 'name_servers', 'op': 'add', 'tag': tag, 'data': servers}
+        self._communicate(msg)
+
+    def delete_name_servers(self, tag):
+        msg = {'type': 'name_servers', 'op': 'delete', 'tag': tag}
+        self._communicate(msg)