doc/mgr/restful: update max_request config

Signed-off-by: Nitzan Mordechai <[email protected]>

doc/mgr/restful.rst

@@ -77,6 +77,19 @@ If the port is not configured, *restful* will bind to port ``8003``.
 If the address it not configured, the *restful* will bind to ``::``,
 which corresponds to all available IPv4 and IPv6 addresses.
 
+Configuring max_request
+---------------------------
+
+The maximum request size can be configured via a central configuration
+option::
+
+  ceph config set mgr mgr/restful/$name/max_requests $NUM
+
+where ``$name`` is the ID of the ceph-mgr daemon (usually the hostname).
+
+.. mgr_module:: restful
+.. confval:: max_requests
+
 .. _creating-an-api-user:
 
 Creating an API User

src/pybind/mgr/restful/module.py

@@ -24,7 +24,7 @@
 from werkzeug.serving import make_server, make_ssl_devcert
 
 from .hooks import ErrorHook
-from mgr_module import MgrModule, CommandResult, NotifyType
+from mgr_module import MgrModule, CommandResult, NotifyType, Option
 from mgr_util import build_url
 
 
@@ -194,11 +194,18 @@ def __json__(self):
 
 class Module(MgrModule):
     MODULE_OPTIONS = [
-        {'name': 'server_addr'},
-        {'name': 'server_port'},
-        {'name': 'key_file'},
-        {'name': 'enable_auth', 'type': 'bool', 'default': True},
-        {'name': 'max_requests', 'type': 'int', 'default': 500},
+        Option(name='server_addr'),
+        Option(name='server_port'),
+        Option(name='key_file'),
+        Option(name='enable_auth',
+               type='bool',
+               default=True),
+        Option(name='max_requests',
+               type='int',
+               default=500,
+               desc='Maximum number of requests to keep in memory. '
+                    ' When new request comes in, the oldest request will be removed if the number of requests exceeds the max request number.'
+                    'if un-finished request is removed, error message will be logged in the ceph-mgr log.'),
     ]
 
     COMMANDS = [