feat(mongodb): add FsTotalSize and FsUsedSize informations (#10625)

plugins/inputs/mongodb/README.md

@@ -248,6 +248,8 @@ by running Telegraf with the `--debug` argument.
     - ok (integer)
     - storage_size (integer)
     - type (string)
+    - fs_used_size (integer)
+    - fs_total_size (integer)
 
 - mongodb_col_stats
   - tags:

plugins/inputs/mongodb/mongodb_data.go

@@ -245,15 +245,17 @@ var defaultStorageStats = map[string]string{
 }
 
 var dbDataStats = map[string]string{
-	"collections":  "Collections",
-	"objects":      "Objects",
-	"avg_obj_size": "AvgObjSize",
-	"data_size":    "DataSize",
-	"storage_size": "StorageSize",
-	"num_extents":  "NumExtents",
-	"indexes":      "Indexes",
-	"index_size":   "IndexSize",
-	"ok":           "Ok",
+	"collections":   "Collections",
+	"objects":       "Objects",
+	"avg_obj_size":  "AvgObjSize",
+	"data_size":     "DataSize",
+	"storage_size":  "StorageSize",
+	"num_extents":   "NumExtents",
+	"indexes":       "Indexes",
+	"index_size":    "IndexSize",
+	"ok":            "Ok",
+	"fs_used_size":  "FsUsedSize",
+	"fs_total_size": "FsTotalSize",
 }
 
 var colDataStats = map[string]string{

plugins/inputs/mongodb/mongostat.go

@@ -96,6 +96,8 @@ type DbStatsData struct {
 	IndexSize   int64       `bson:"indexSize"`
 	Ok          int64       `bson:"ok"`
 	GleStats    interface{} `bson:"gleStats"`
+	FsUsedSize  int64       `bson:"fsUsedSize"`
+	FsTotalSize int64       `bson:"fsTotalSize"`
 }
 
 type ColStats struct {
@@ -837,6 +839,8 @@ type DbStatLine struct {
 	Indexes     int64
 	IndexSize   int64
 	Ok          int64
+	FsUsedSize  int64
+	FsTotalSize int64
 }
 type ColStatLine struct {
 	Name           string
@@ -1361,6 +1365,8 @@ func NewStatLine(oldMongo, newMongo MongoStatus, key string, all bool, sampleSec
 				Indexes:     dbStatsData.Indexes,
 				IndexSize:   dbStatsData.IndexSize,
 				Ok:          dbStatsData.Ok,
+				FsTotalSize: dbStatsData.FsTotalSize,
+				FsUsedSize:  dbStatsData.FsUsedSize,
 			}
 			returnVal.DbStatsLines = append(returnVal.DbStatsLines, *dbStatLine)
 		}