monitoring: fix metric value NaN

Signed-off-by: huanggze <loganhuang@yunify.com>

pkg/models/monitoring/sort_page.go

@@ -50,9 +50,22 @@ func (w wrapper) Less(i, j int) bool {
 	p := w.MetricValues[i]
 	q := w.MetricValues[j]
 
-	if p.Sample.Value() == q.Sample.Value() {
+	// Place Nil to the tail.
+	if p.Sample == nil && q.Sample != nil {
+		return false
+	}
+	if p.Sample != nil && q.Sample == nil {
+		return true
+	}
+
+	// If both Samples are Nil or have the same metric value, sort by resource name
+	if p.Sample == q.Sample || p.Sample[1] == q.Sample[1] {
 		return p.Metadata[w.identifier] < q.Metadata[w.identifier]
 	}
+	// Place NaN to the tail (NaN takes precedence over Nil).
+	if math.IsNaN(p.Sample[1]) != math.IsNaN(q.Sample[1]) {
+		return !math.IsNaN(p.Sample[1])
+	}
 
 	switch w.order {
 	case OrderAscending:

pkg/models/monitoring/sort_page_test.go

@@ -5,6 +5,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/json-iterator/go"
 	"io/ioutil"
+	"math"
 	"testing"
 )
 
@@ -34,8 +35,22 @@ func TestSort(t *testing.T) {
 			target:     "node_memory_utilisation",
 			order:      "desc",
 			identifier: "node",
-			raw:        "faulty-node-metrics.json",
+			raw:        "faulty-node-metrics-1.json",
-			expected:   "faulty-node-metrics-sorted.json",
+			expected:   "faulty-node-metrics-sorted-1.json",
+		},
+		{
+			target:     "node_cpu_utilisation",
+			order:      "asc",
+			identifier: "node",
+			raw:        "faulty-node-metrics-2.json",
+			expected:   "faulty-node-metrics-sorted-2.json",
+		},
+		{
+			target:     "node_cpu_utilisation",
+			order:      "asc",
+			identifier: "node",
+			raw:        "faulty-node-metrics-3.json",
+			expected:   "faulty-node-metrics-sorted-3.json",
 		},
 		{
 			target:     "node_memory_utilisation",
@@ -61,7 +76,10 @@ func TestSort(t *testing.T) {
 			}
 
 			result := source.Sort(tt.target, tt.order, tt.identifier)
-			if diff := cmp.Diff(*result, *expected); diff != "" {
+			opt := cmp.Comparer(func(x, y float64) bool {
+				return (math.IsNaN(x) && math.IsNaN(y)) || x == y
+			})
+			if diff := cmp.Diff(*result, *expected, opt); diff != "" {
 				t.Fatalf("%T differ (-got, +want): %s", expected, diff)
 			}
 		})
@@ -102,7 +120,7 @@ func TestPage(t *testing.T) {
 		{
 			page:     1,
 			limit:    2,
-			raw:      "faulty-node-metrics-sorted.json",
+			raw:      "faulty-node-metrics-sorted-1.json",
 			expected: "faulty-node-metrics-paged.json",
 		},
 	}

pkg/models/monitoring/testdata/blank-node-metrics-sorted.json

@@ -11,7 +11,7 @@
             },
             "value":[
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -20,7 +20,7 @@
             },
             "value":[
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           },
           {
@@ -29,7 +29,7 @@
             },
             "value":[
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           }
         ]
@@ -46,7 +46,7 @@
             },
             "value":[
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -55,7 +55,7 @@
             },
             "value":[
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           },
           {
@@ -64,7 +64,7 @@
             },
             "value":[
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           }
         ]

pkg/models/monitoring/testdata/blank-node-metrics.json

@@ -11,7 +11,7 @@
             },
             "value": [
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -20,7 +20,7 @@
             },
             "value": [
               1585658599.193,
-              0.2601006025131434
+              "0.2601006025131434"
             ]
           },
           {
@@ -29,7 +29,7 @@
             },
             "value": [
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           },
           {
@@ -38,7 +38,7 @@
             },
             "value": [
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           }
         ]
@@ -55,7 +55,7 @@
             },
             "value": [
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -64,7 +64,7 @@
             },
             "value": [
               1585658599.195,
-              0.1446648505469157
+              "0.1446648505469157"
             ]
           },
           {
@@ -73,7 +73,7 @@
             },
             "value": [
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           },
           {
@@ -82,7 +82,7 @@
             },
             "value": [
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           }
         ]

pkg/models/monitoring/testdata/faulty-node-metrics-1.json

@@ -15,7 +15,7 @@
             },
             "value": [
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -24,7 +24,7 @@
             },
             "value": [
               1585658599.193,
-              0.2601006025131434
+              "0.2601006025131434"
             ]
           },
           {
@@ -33,7 +33,7 @@
             },
             "value": [
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           },
           {
@@ -42,7 +42,7 @@
             },
             "value": [
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           }
         ]
@@ -59,7 +59,7 @@
             },
             "value": [
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -68,7 +68,7 @@
             },
             "value": [
               1585658599.195,
-              0.1446648505469157
+              "0.1446648505469157"
             ]
           },
           {
@@ -77,7 +77,7 @@
             },
             "value": [
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           },
           {
@@ -86,7 +86,7 @@
             },
             "value": [
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           }
         ]

pkg/models/monitoring/testdata/faulty-node-metrics-2.json

@@ -0,0 +1,232 @@
+{
+  "results": [
+    {
+      "metric_name": "node_cpu_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.193,
+              "0.18095833333306172"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.193,
+              "0.03250000000007276"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.193,
+              "0.07443750000044626"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.193,
+              "0.05066666666655995"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.193,
+              "0.05210416666595847"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.193,
+              "0.07756249999996119"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            }
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.193,
+              "0.06745833333334303"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "metric_name": "node_disk_size_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.193,
+              "0.42012898861983516"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.193,
+              "0.2601006025131434"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.193,
+              "0.29849334024542695"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.193,
+              "0.2588273152865106"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.193,
+              "0.21351118996831508"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.193,
+              "0.4329682466178235"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            }
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.193,
+              "0.35981263055856705"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "metric_name": "node_memory_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.195,
+              "0.5286875837861773"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.195,
+              "0.1446648505469157"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.195,
+              "0.23637090535053928"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.195,
+              "0.2497060264216553"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.195,
+              "0.21291125105270192"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.195,
+              "0.823247832787681"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            }
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.195,
+              "0.40309723127991315"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}

pkg/models/monitoring/testdata/faulty-node-metrics-3.json

@@ -0,0 +1,244 @@
+{
+  "results": [
+    {
+      "metric_name": "node_cpu_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.193,
+              "0.18095833333306172"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.193,
+              "+Inf"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.193,
+              "0.07443750000044626"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.193,
+              "-Inf"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.193,
+              "0.05210416666595847"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.193,
+              "0.07756249999996119"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            },
+            "value": [
+              1585658599.193,
+              "NaN"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.193,
+              "0.06745833333334303"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "metric_name": "node_disk_size_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.193,
+              "0.42012898861983516"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.193,
+              "0.2601006025131434"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.193,
+              "0.29849334024542695"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.193,
+              "0.2588273152865106"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.193,
+              "0.21351118996831508"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.193,
+              "0.4329682466178235"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            },
+            "value": [
+              1585658599.193,
+              "0.5286875837861773"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.193,
+              "0.35981263055856705"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "metric_name": "node_memory_utilisation",
+      "data": {
+        "resultType": "vector",
+        "result": [
+          {
+            "metric": {
+              "node": "i-2dazc1d6"
+            },
+            "value": [
+              1585658599.195,
+              "0.5286875837861773"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-9jtsi522"
+            },
+            "value": [
+              1585658599.195,
+              "0.1446648505469157"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ezjb7gsk"
+            },
+            "value": [
+              1585658599.195,
+              "0.23637090535053928"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-hgcoippu"
+            },
+            "value": [
+              1585658599.195,
+              "0.2497060264216553"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-ircdnrao"
+            },
+            "value": [
+              1585658599.195,
+              "0.21291125105270192"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-o13skypq"
+            },
+            "value": [
+              1585658599.195,
+              "0.823247832787681"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-tl1i71hr"
+            },
+            "value": [
+              1585658599.195,
+              "0.5286875837861773"
+            ]
+          },
+          {
+            "metric": {
+              "node": "i-xfcxdn7z"
+            },
+            "value": [
+              1585658599.195,
+              "0.40309723127991315"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}

pkg/models/monitoring/testdata/faulty-node-metrics-paged.json

@@ -15,7 +15,7 @@
             },
             "value":[
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -24,7 +24,7 @@
             },
             "value":[
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           }
         ]
@@ -41,7 +41,7 @@
             },
             "value":[
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -50,7 +50,7 @@
             },
             "value":[
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           }
         ]

pkg/models/monitoring/testdata/faulty-node-metrics-sorted-1.json

@@ -15,7 +15,7 @@
             },
             "value":[
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -24,7 +24,7 @@
             },
             "value":[
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           },
           {
@@ -33,7 +33,7 @@
             },
             "value":[
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           },
           {
@@ -42,7 +42,7 @@
             },
             "value":[
               1585658599.193,
-              0.2601006025131434
+              "0.2601006025131434"
             ]
           }
         ]
@@ -59,7 +59,7 @@
             },
             "value":[
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -68,7 +68,7 @@
             },
             "value":[
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           },
           {
@@ -77,7 +77,7 @@
             },
             "value":[
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           },
           {
@@ -86,7 +86,7 @@
             },
             "value":[
               1585658599.195,
-              0.1446648505469157
+              "0.1446648505469157"
             ]
           }
         ]

pkg/models/monitoring/testdata/faulty-node-metrics-sorted-2.json

@@ -0,0 +1,235 @@
+{
+  "results":[
+    {
+      "metric_name":"node_cpu_utilisation",
+      "data":{
+        "resultType":"vector",
+        "result":[
+          {
+            "metric":{
+              "node":"i-9jtsi522"
+            },
+            "value":[
+              1585658599.193,
+              "0.03250000000007276"
+            ]
+          },
+          {
+            "metric":{
+              "node":"i-hgcoippu"
+            },
+            "value":[
+              1585658599.193,
+              "0.05066666666655995"
+            ]
+          },
+          {
+            "metric":{
+              "node":"i-ircdnrao"
+            },
+            "value":[
+              1585658599.193,
+              "0.05210416666595847"
+            ]
+          },
+          {
+            "metric":{
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+    {
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+    {
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+  "total_page":1,
+  "total_item":8
+}

pkg/models/monitoring/testdata/faulty-node-metrics-sorted-3.json

@@ -0,0 +1,247 @@
+{
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+      "data":{
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+    {
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+}

pkg/models/monitoring/testdata/null-node-metrics-sorted.json

@@ -22,7 +22,7 @@
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pkg/models/monitoring/testdata/null-node-metrics.json

@@ -17,7 +17,7 @@
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pkg/models/monitoring/testdata/paged-node-metrics-1.json

@@ -11,7 +11,7 @@
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pkg/models/monitoring/testdata/paged-node-metrics-2.json

@@ -11,7 +11,7 @@
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pkg/models/monitoring/testdata/sorted-node-metrics-asc.json

@@ -11,7 +11,7 @@
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pkg/models/monitoring/testdata/sorted-node-metrics-desc.json

@@ -11,7 +11,7 @@
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               1585658599.193,
-              0.05210416666595847
+              "0.05210416666595847"
             ]
           },
           {
@@ -65,7 +65,7 @@
             },
             "value":[
               1585658599.193,
-              0.03250000000007276
+              "0.03250000000007276"
             ]
           },
           {
@@ -74,7 +74,7 @@
             },
             "value":[
               1585658599.193,
-              0.021645833333483702
+              "0.021645833333483702"
             ]
           }
         ]
@@ -91,7 +91,7 @@
             },
             "value":[
               1585658599.193,
-              0.4329682466178235
+              "0.4329682466178235"
             ]
           },
           {
@@ -100,7 +100,7 @@
             },
             "value":[
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -109,7 +109,7 @@
             },
             "value":[
               1585658599.193,
-              0.35981263055856705
+              "0.35981263055856705"
             ]
           },
           {
@@ -118,7 +118,7 @@
             },
             "value":[
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           },
           {
@@ -127,7 +127,7 @@
             },
             "value":[
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           },
           {
@@ -136,7 +136,7 @@
             },
             "value":[
               1585658599.193,
-              0.21351118996831508
+              "0.21351118996831508"
             ]
           },
           {
@@ -145,7 +145,7 @@
             },
             "value":[
               1585658599.193,
-              0.2601006025131434
+              "0.2601006025131434"
             ]
           },
           {
@@ -154,7 +154,7 @@
             },
             "value":[
               1585658599.193,
-              0.3335848564534758
+              "0.3335848564534758"
             ]
           }
         ]
@@ -171,7 +171,7 @@
             },
             "value":[
               1585658599.195,
-              0.823247832787681
+              "0.823247832787681"
             ]
           },
           {
@@ -180,7 +180,7 @@
             },
             "value":[
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -189,7 +189,7 @@
             },
             "value":[
               1585658599.195,
-              0.40309723127991315
+              "0.40309723127991315"
             ]
           },
           {
@@ -198,7 +198,7 @@
             },
             "value":[
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           },
           {
@@ -207,7 +207,7 @@
             },
             "value":[
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           },
           {
@@ -216,7 +216,7 @@
             },
             "value":[
               1585658599.195,
-              0.21291125105270192
+              "0.21291125105270192"
             ]
           },
           {
@@ -225,7 +225,7 @@
             },
             "value":[
               1585658599.195,
-              0.1446648505469157
+              "0.1446648505469157"
             ]
           },
           {
@@ -234,7 +234,7 @@
             },
             "value":[
               1585658599.195,
-              0.12824588180084573
+              "0.12824588180084573"
             ]
           }
         ]

pkg/models/monitoring/testdata/source-node-metrics.json

@@ -11,7 +11,7 @@
             },
             "value": [
               1585658599.193,
-              0.18095833333306172
+              "0.18095833333306172"
             ]
           },
           {
@@ -20,7 +20,7 @@
             },
             "value": [
               1585658599.193,
-              0.03250000000007276
+              "0.03250000000007276"
             ]
           },
           {
@@ -29,7 +29,7 @@
             },
             "value": [
               1585658599.193,
-              0.07443750000044626
+              "0.07443750000044626"
             ]
           },
           {
@@ -38,7 +38,7 @@
             },
             "value": [
               1585658599.193,
-              0.05066666666655995
+              "0.05066666666655995"
             ]
           },
           {
@@ -47,7 +47,7 @@
             },
             "value": [
               1585658599.193,
-              0.05210416666595847
+              "0.05210416666595847"
             ]
           },
           {
@@ -56,7 +56,7 @@
             },
             "value": [
               1585658599.193,
-              0.07756249999996119
+              "0.07756249999996119"
             ]
           },
           {
@@ -65,7 +65,7 @@
             },
             "value": [
               1585658599.193,
-              0.021645833333483702
+              "0.021645833333483702"
             ]
           },
           {
@@ -74,7 +74,7 @@
             },
             "value": [
               1585658599.193,
-              0.06745833333334303
+              "0.06745833333334303"
             ]
           }
         ]
@@ -91,7 +91,7 @@
             },
             "value": [
               1585658599.193,
-              0.42012898861983516
+              "0.42012898861983516"
             ]
           },
           {
@@ -100,7 +100,7 @@
             },
             "value": [
               1585658599.193,
-              0.2601006025131434
+              "0.2601006025131434"
             ]
           },
           {
@@ -109,7 +109,7 @@
             },
             "value": [
               1585658599.193,
-              0.29849334024542695
+              "0.29849334024542695"
             ]
           },
           {
@@ -118,7 +118,7 @@
             },
             "value": [
               1585658599.193,
-              0.2588273152865106
+              "0.2588273152865106"
             ]
           },
           {
@@ -127,7 +127,7 @@
             },
             "value": [
               1585658599.193,
-              0.21351118996831508
+              "0.21351118996831508"
             ]
           },
           {
@@ -136,7 +136,7 @@
             },
             "value": [
               1585658599.193,
-              0.4329682466178235
+              "0.4329682466178235"
             ]
           },
           {
@@ -145,7 +145,7 @@
             },
             "value": [
               1585658599.193,
-              0.3335848564534758
+              "0.3335848564534758"
             ]
           },
           {
@@ -154,7 +154,7 @@
             },
             "value": [
               1585658599.193,
-              0.35981263055856705
+              "0.35981263055856705"
             ]
           }
         ]
@@ -171,7 +171,7 @@
             },
             "value": [
               1585658599.195,
-              0.5286875837861773
+              "0.5286875837861773"
             ]
           },
           {
@@ -180,7 +180,7 @@
             },
             "value": [
               1585658599.195,
-              0.1446648505469157
+              "0.1446648505469157"
             ]
           },
           {
@@ -189,7 +189,7 @@
             },
             "value": [
               1585658599.195,
-              0.23637090535053928
+              "0.23637090535053928"
             ]
           },
           {
@@ -198,7 +198,7 @@
             },
             "value": [
               1585658599.195,
-              0.2497060264216553
+              "0.2497060264216553"
             ]
           },
           {
@@ -207,7 +207,7 @@
             },
             "value": [
               1585658599.195,
-              0.21291125105270192
+              "0.21291125105270192"
             ]
           },
           {
@@ -216,7 +216,7 @@
             },
             "value": [
               1585658599.195,
-              0.823247832787681
+              "0.823247832787681"
             ]
           },
           {
@@ -225,7 +225,7 @@
             },
             "value": [
               1585658599.195,
-              0.12824588180084573
+              "0.12824588180084573"
             ]
           },
           {
@@ -234,7 +234,7 @@
             },
             "value": [
               1585658599.195,
-              0.40309723127991315
+              "0.40309723127991315"
             ]
           }
         ]

pkg/simple/client/monitoring/prometheus/testdata/metrics-matrix-type-res.json

@@ -17,23 +17,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         },
@@ -50,23 +50,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         },
@@ -83,23 +83,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         },
@@ -116,23 +116,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         },
@@ -149,23 +149,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         },
@@ -182,23 +182,23 @@
           "values":[
             [
               1585743925,
-              1.123456
+              "1.123456"
             ],
             [
               1585744045,
-              1.123456
+              "1.123456"
             ],
             [
               1585744165,
-              1.123456
+              "1.123456"
             ],
             [
               1585744285,
-              1.123456
+              "1.123456"
             ],
             [
               1585744405,
-              1.123456
+              "1.123456"
             ]
           ]
         }

pkg/simple/client/monitoring/prometheus/testdata/metrics-vector-type-res.json

@@ -16,7 +16,7 @@
           },
           "value":[
             1585743854.077,
-            1.123456
+            "1.123456"
           ]
         },
         {
@@ -31,7 +31,7 @@
           },
           "value":[
             1585743854.077,
-            1.123456
+            "1.123456"
           ]
         },
         {
@@ -46,7 +46,7 @@
           },
           "value":[
             1585743854.077,
-            1.123456
+            "1.123456"
           ]
         },
         {
@@ -61,7 +61,7 @@
           },
           "value":[
             1585743854.077,
-            1.123456
+            "1.123456"
           ]
         }
       ]

pkg/simple/client/monitoring/types.go

@@ -1,5 +1,12 @@
 package monitoring
 
+import (
+	"errors"
+	"fmt"
+	"github.com/json-iterator/go"
+	"strconv"
+)
+
 const (
 	MetricTypeMatrix = "matrix"
 	MetricTypeVector = "vector"
@@ -22,6 +29,8 @@ type MetricData struct {
 	MetricValues []MetricValue `json:"result,omitempty" description:"metric data including labels, time series and values"`
 }
 
+// The first element is the timestamp, the second is the metric value.
+// eg, [1585658599.195, 0.528]
 type Point [2]float64
 
 type MetricValue struct {
@@ -40,3 +49,50 @@ func (p Point) Timestamp() float64 {
 func (p Point) Value() float64 {
 	return p[1]
 }
+
+// MarshalJSON implements json.Marshaler. It will be called when writing JSON to HTTP response
+// Inspired by prometheus/client_golang
+func (p Point) MarshalJSON() ([]byte, error) {
+	t, err := jsoniter.Marshal(p.Timestamp())
+	if err != nil {
+		return nil, err
+	}
+	v, err := jsoniter.Marshal(strconv.FormatFloat(p.Value(), 'f', -1, 64))
+	if err != nil {
+		return nil, err
+	}
+	return []byte(fmt.Sprintf("[%s,%s]", t, v)), nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler. This is for unmarshaling test data.
+func (p *Point) UnmarshalJSON(b []byte) error {
+	var v []interface{}
+	if err := jsoniter.Unmarshal(b, &v); err != nil {
+		return err
+	}
+
+	if v == nil {
+		return nil
+	}
+
+	if len(v) != 2 {
+		return errors.New("unsupported array length")
+	}
+
+	ts, ok := v[0].(float64)
+	if !ok {
+		return errors.New("failed to unmarshal [timestamp]")
+	}
+	valstr, ok := v[1].(string)
+	if !ok {
+		return errors.New("failed to unmarshal [value]")
+	}
+	valf, err := strconv.ParseFloat(valstr, 64)
+	if err != nil {
+		return err
+	}
+
+	p[0] = ts
+	p[1] = valf
+	return nil
+}