Change meter_id to meter_name in generated docs

All operations on API level use meter name.
GET or POST /v2/meters/name_of_meter.
In docs we have meter_id, it is confusing, because meter_id is
syntetic UUID that is not used in DB ops.

The change should be done in v2.py because docs are generated
automatically and it's content is based on variables names from
the code.

Change-Id: I29abbefdaaa039f790f78fac102ede933d61d911

ceilometer/api/controllers/v2.py

@@ -710,9 +710,9 @@ class MeterController(rest.RestController):
         'statistics': ['GET'],
     }
 
-    def __init__(self, meter_id):
-        pecan.request.context['meter_id'] = meter_id
-        self._id = meter_id
+    def __init__(self, meter_name):
+        pecan.request.context['meter_name'] = meter_name
+        self.meter_name = meter_name
 
     @wsme_pecan.wsexpose([OldSample], [Query], int)
     def get_all(self, q=[], limit=None):
@@ -724,7 +724,7 @@ class MeterController(rest.RestController):
         if limit and limit < 0:
             raise ClientSideError(_("Limit must be positive"))
         kwargs = _query_to_kwargs(q, storage.SampleFilter.__init__)
-        kwargs['meter'] = self._id
+        kwargs['meter'] = self.meter_name
         f = storage.SampleFilter(**kwargs)
         return [OldSample.from_db_model(e)
                 for e in pecan.request.storage_conn.get_samples(f, limit=limit)
@@ -744,9 +744,9 @@ class MeterController(rest.RestController):
 
         published_samples = []
         for s in samples:
-            if self._id != s.counter_name:
+            if self.meter_name != s.counter_name:
                 raise wsme.exc.InvalidInput('counter_name', s.counter_name,
-                                            'should be %s' % self._id)
+                                            'should be %s' % self.meter_name)
 
             if s.message_id:
                 raise wsme.exc.InvalidInput('message_id', s.message_id,
@@ -802,7 +802,7 @@ class MeterController(rest.RestController):
             raise ClientSideError(_("Period must be positive."))
 
         kwargs = _query_to_kwargs(q, storage.SampleFilter.__init__)
-        kwargs['meter'] = self._id
+        kwargs['meter'] = self.meter_name
         f = storage.SampleFilter(**kwargs)
         g = _validate_groupby_fields(groupby)
         computed = pecan.request.storage_conn.get_meter_statistics(f,
@@ -875,11 +875,11 @@ class MetersController(rest.RestController):
     """Works on meters."""
 
     @pecan.expose()
-    def _lookup(self, meter_id, *remainder):
+    def _lookup(self, meter_name, *remainder):
         # NOTE(gordc): drop last path if empty (Bug #1202739)
         if remainder and not remainder[-1]:
             remainder = remainder[:-1]
-        return MeterController(meter_id), remainder
+        return MeterController(meter_name), remainder
 
     @wsme_pecan.wsexpose([Meter], [Query])
     def get_all(self, q=[]):

doc/source/webapi/v2.rst

@@ -22,12 +22,12 @@ Meters
 .. rest-controller:: ceilometer.api.controllers.v2:MeterController
    :webprefix: /v2/meters
 
-Samples and Statistics
-======================
-
 .. autotype:: ceilometer.api.controllers.v2.Meter
    :members:
 
+Samples and Statistics
+======================
+
 .. autotype:: ceilometer.api.controllers.v2.Sample
    :members: