Merge pull request ceph#27885 from b-ranto/wip-restful-perf-counters

restful: Expose perf counters

Reviewed-by: Kefu Chai <[email protected]>

qa/workunits/rest/test_mgr_rest_api.py

@@ -72,8 +72,9 @@
     ('get',    '/request?page=0', {}),
     ('delete', '/request', {}),
     ('get',    '/request', {}),
-    ('patch', '/pool/1', {'pg_num': 128}),
-    ('patch', '/pool/1', {'pgp_num': 128}),
+    ('patch',  '/pool/1', {'pg_num': 128}),
+    ('patch',  '/pool/1', {'pgp_num': 128}),
+    ('get',    '/perf?daemon=.*', {}),
 ]
 
 for method, endpoint, args in screenplay:

src/pybind/mgr/restful/api/__init__.py

@@ -7,6 +7,7 @@
 from .mon import Mon
 from .osd import Osd
 from .pool import Pool
+from .perf import Perf
 from .request import Request
 from .server import Server
 
@@ -17,6 +18,7 @@ class Root(RestController):
     doc = Doc()
     mon = Mon()
     osd = Osd()
+    perf = Perf()
     pool = Pool()
     request = Request()
     server = Server()

src/pybind/mgr/restful/api/perf.py

@@ -0,0 +1,27 @@
+from pecan import expose, request, response
+from pecan.rest import RestController
+
+from restful import context
+from restful.decorators import auth, lock, paginate
+
+import re
+
+class Perf(RestController):
+    @expose(template='json')
+    @paginate
+    @auth
+    def get(self, **kwargs):
+        """
+        List all the available performance counters
+
+        Options:
+         - 'daemon' -- filter by daemon, accepts Python regexp
+        """
+
+        counters = context.instance.get_all_perf_counters()
+
+        if 'daemon' in kwargs:
+            _re = re.compile(kwargs['daemon'])
+            counters = {k: v for k, v in counters.items() if _re.match(k)}
+
+        return counters