From e6c57e7df4f40d5569e900648d73d6c4e27959db Mon Sep 17 00:00:00 2001
From: Ross Lodge <rlodge@concentricsky.com>
Date: Thu, 5 Dec 2019 16:38:51 -0800
Subject: [PATCH] Add page_faults for mongodb wired tiger (#6732)

---
 plugins/inputs/mongodb/mongodb_data.go      | 1 +
 plugins/inputs/mongodb/mongodb_data_test.go | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/plugins/inputs/mongodb/mongodb_data.go b/plugins/inputs/mongodb/mongodb_data.go
index 0c3695c61..279dbb138 100644
--- a/plugins/inputs/mongodb/mongodb_data.go
+++ b/plugins/inputs/mongodb/mongodb_data.go
@@ -248,6 +248,7 @@ func (d *MongodbData) AddDefaultStats() {
 			d.add(key, floatVal)
 		}
 		d.addStat(statLine, WiredTigerExtStats)
+		d.add("page_faults", d.StatLine.FaultsCnt)
 	}
 }
 
diff --git a/plugins/inputs/mongodb/mongodb_data_test.go b/plugins/inputs/mongodb/mongodb_data_test.go
index 2717dffd1..bbc882a26 100644
--- a/plugins/inputs/mongodb/mongodb_data_test.go
+++ b/plugins/inputs/mongodb/mongodb_data_test.go
@@ -100,6 +100,7 @@ func TestAddWiredTigerStats(t *testing.T) {
 			PagesQueuedForEviction:    0,
 			ServerEvictingPages:       0,
 			WorkerThreadEvictingPages: 0,
+			FaultsCnt:                 204,
 		},
 		tags,
 	)
@@ -116,6 +117,8 @@ func TestAddWiredTigerStats(t *testing.T) {
 	for key := range WiredTigerExtStats {
 		assert.True(t, acc.HasFloatField("mongodb", key) || acc.HasInt64Field("mongodb", key), key)
 	}
+
+	assert.True(t, acc.HasInt64Field("mongodb", "page_faults"))
 }
 
 func TestAddShardStats(t *testing.T) {