fix: json_v2 parser timestamp setting (#10221)

plugins/parsers/json_v2/parser.go

@@ -503,7 +503,7 @@ func (p *Parser) combineObject(result MetricNode) ([]telegraf.Metric, error) {
 				if err != nil {
 					return false
 				}
-				results = cartesianProduct(results, r)
+				results = cartesianProduct(r, results)
 			}
 
 			return true

plugins/parsers/json_v2/testdata/multiple_arrays_in_object/expected.out

@@ -1,8 +1,8 @@
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Bilbo",species="hobbit",random=1
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Bilbo",species="hobbit",random=2
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Frodo",species="hobbit",random=1
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Frodo",species="hobbit",random=2
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Bilbo",species="hobbit",random=1
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Bilbo",species="hobbit",random=2
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Frodo",species="hobbit",random=1
-file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Frodo",species="hobbit",random=2
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Bilbo",random=1,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Bilbo",random=1,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Frodo",random=1,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Frodo",random=1,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Bilbo",random=2,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Bilbo",random=2,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="A Long-expected Party",name="Frodo",random=2,species="hobbit"
+file,title=The\ Lord\ Of\ The\ Rings author="Tolkien",chapters="The Shadow of the Past",name="Frodo",random=2,species="hobbit"

plugins/parsers/json_v2/testdata/object_timestamp/expected.out

@@ -0,0 +1,3 @@
+metric,id=100 value=100.123 1609459199000000000
+metric,id=101 value=200.001 1276605000000000000
+metric,id=102 value=999.999 946684800000000000

plugins/parsers/json_v2/testdata/object_timestamp/input.json

@@ -0,0 +1,19 @@
+{
+    "events": [
+        {
+            "id": 100,
+            "value": 100.123,
+            "time": "2020-12-31T23:59:59Z"
+        },
+        {
+            "id": 101,
+            "value": 200.001,
+            "time": "2010-06-15T12:30:00Z"
+        },
+        {
+            "id": 102,
+            "value": 999.999,
+            "time": "2000-01-01T00:00:00Z"
+        }
+    ]
+}

plugins/parsers/json_v2/testdata/object_timestamp/telegraf.conf

@@ -0,0 +1,12 @@
+[[inputs.file]]
+    files = ["./testdata/object_timestamp/input.json"]
+    data_format = "json_v2"
+
+    [[inputs.file.json_v2]]
+        measurement_name = "metric"
+
+        [[inputs.file.json_v2.object]]
+            path = "events"
+            tags = ["id"]
+            timestamp_key = "time"
+            timestamp_format = "2006-01-02T15:04:05Z"