Add parameterized proxy client requests

ocf/loxthelion/managed-container.d/proxy_client.py

@@ -17,13 +17,21 @@ class ProtocolFailure(Exception):
     pass
 
 
-def send_request(socket_path, resource, action):
+def send_request(
+    socket_path,
+    resource,
+    action,
+    parameters=None,
+):
     request = {
         "protocol_version": PROTOCOL_VERSION,
         "action": action,
         "resource": resource,
     }
 
+    if parameters is not None:
+        request["parameters"] = parameters
+
     try:
         sock = socket.socket(
             socket.AF_UNIX,
@@ -166,12 +174,26 @@ def format_result(action, result):
 
 
 def main():
-    if len(sys.argv) != 6:
+    if len(sys.argv) not in (6, 7):
         raise SystemExit(11)
 
     socket_path = sys.argv[1]
     resource = sys.argv[2]
     action = sys.argv[3]
+    request_parameters = None
+
+    if len(sys.argv) == 7:
+        try:
+            request_parameters = json.loads(sys.argv[6])
+
+        except (
+            TypeError,
+            json.JSONDecodeError,
+        ):
+            raise SystemExit(11)
+
+        if not isinstance(request_parameters, dict):
+            raise SystemExit(11)
 
     try:
         transport_failure = int(sys.argv[4])
@@ -188,6 +210,7 @@ def main():
             socket_path,
             resource,
             action,
+            request_parameters,
         )
 
     except TransportFailure: