From 705f35bfd71671e0168dca78960820cb7b31ec2a Mon Sep 17 00:00:00 2001
From: Louis Williams <louis.williams@mongodb.com>
Date: Tue, 8 Sep 2020 17:43:35 -0400
Subject: SERVER-50702 Create feature flag for measuring operation resource
 consumption

---
 src/mongo/db/SConscript                            |  1 +
 src/mongo/db/stats/SConscript                      | 14 +++++++
 .../db/stats/operation_resource_consumption.idl    | 43 ++++++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 src/mongo/db/stats/operation_resource_consumption.idl

diff --git a/src/mongo/db/SConscript b/src/mongo/db/SConscript
index 25c4d852403..2d90253f008 100644
--- a/src/mongo/db/SConscript
+++ b/src/mongo/db/SConscript
@@ -863,6 +863,7 @@ env.Library(
         '$BUILD_DIR/mongo/db/s/sharding_api_d',
         '$BUILD_DIR/mongo/db/stats/api_version_metrics',
         '$BUILD_DIR/mongo/db/stats/counters',
+        '$BUILD_DIR/mongo/db/stats/resource_consumption_metrics',
         '$BUILD_DIR/mongo/db/stats/server_read_concern_write_concern_metrics',
         '$BUILD_DIR/mongo/db/stats/top',
         '$BUILD_DIR/mongo/db/storage/storage_engine_lock_file',
diff --git a/src/mongo/db/stats/SConscript b/src/mongo/db/stats/SConscript
index 755414a43bf..15138462b01 100644
--- a/src/mongo/db/stats/SConscript
+++ b/src/mongo/db/stats/SConscript
@@ -72,6 +72,20 @@ env.Library(
     ],
 )
 
+env.Library(
+    target='resource_consumption_metrics',
+    source=[
+        env.Idlc('operation_resource_consumption.idl')[0],
+    ],
+    LIBDEPS=[
+        '$BUILD_DIR/mongo/base',
+        '$BUILD_DIR/mongo/idl/idl_parser',
+    ],
+    LIBDEPS_PRIVATE=[
+        '$BUILD_DIR/mongo/idl/server_parameter',
+    ],
+)
+
 env.Library(
     target="transaction_stats",
     source=[
diff --git a/src/mongo/db/stats/operation_resource_consumption.idl b/src/mongo/db/stats/operation_resource_consumption.idl
new file mode 100644
index 00000000000..62dd1abbf09
--- /dev/null
+++ b/src/mongo/db/stats/operation_resource_consumption.idl
@@ -0,0 +1,43 @@
+# Copyright (C) 2020-present MongoDB, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the Server Side Public License, version 1,
+# as published by MongoDB, Inc.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# Server Side Public License for more details.
+#
+# You should have received a copy of the Server Side Public License
+# along with this program. If not, see
+# <http://www.mongodb.com/licensing/server-side-public-license>.
+#
+# As a special exception, the copyright holders give permission to link the
+# code of portions of this program with the OpenSSL library under certain
+# conditions as described in each individual source file and distribute
+# linked combinations including the program with the OpenSSL library. You
+# must comply with the Server Side Public License in all respects for
+# all of the code used other than as permitted herein. If you modify file(s)
+# with this exception, you may extend this exception to your version of the
+# file(s), but you are not obligated to do so. If you do not wish to do so,
+# delete this exception statement from your version. If you delete this
+# exception statement from all source files in the program, then also delete
+# it in the license file.
+#
+
+global:
+  cpp_namespace: "mongo"
+
+imports:
+  - "mongo/idl/basic_types.idl"
+
+server_parameters:
+  measureOperationResourceConsumption:
+    description: "When true, records resource consumption for all operations"
+    set_at:
+      - runtime
+      - startup
+    cpp_varname: measureOperationResourceConsumption
+    cpp_vartype: AtomicWord<bool>
+    default: false
-- 
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