Expose created time and updated time to indexcoord metrics (#8591)

Signed-off-by: dragondriver <jiquan.long@zilliz.com>

internal/indexcoord/index_coord.go

@@ -250,6 +250,9 @@ func (i *IndexCoord) Start() error {
 		cb()
 	}
 
+	Params.CreatedTime = time.Now()
+	Params.UpdatedTime = time.Now()
+
 	i.UpdateStateCode(internalpb.StateCode_Healthy)
 	log.Debug("IndexCoord start successfully", zap.Any("State", i.stateCode.Load()))
 

internal/indexcoord/metrics_info.go

@@ -50,8 +50,9 @@ func getSystemInfoMetrics(
 					SystemVersion: os.Getenv(metricsinfo.GitCommitEnvKey),
 					DeployMode:    os.Getenv(metricsinfo.DeployModeEnvKey),
 				},
-				// TODO(dragondriver): CreatedTime & UpdatedTime, easy but time-costing
-				Type: typeutil.IndexCoordRole,
+				CreatedTime: Params.CreatedTime.String(),
+				UpdatedTime: Params.UpdatedTime.String(),
+				Type:        typeutil.IndexCoordRole,
 			},
 			SystemConfigurations: metricsinfo.IndexCoordConfiguration{
 				MinioBucketName: Params.MinioBucketName,

internal/indexcoord/param_table.go

@@ -16,6 +16,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/util/paramtable"
@@ -37,6 +38,9 @@ type ParamTable struct {
 	MinIOUseSSL          bool
 	MinioBucketName      string
 
+	CreatedTime time.Time
+	UpdatedTime time.Time
+
 	Log log.Config
 }
 

internal/indexcoord/param_table_test.go

@@ -13,6 +13,7 @@ package indexcoord
 
 import (
 	"testing"
+	"time"
 )
 
 func TestParamTable(t *testing.T) {
@@ -57,6 +58,16 @@ func TestParamTable(t *testing.T) {
 	t.Run("MinioBucketName", func(t *testing.T) {
 		t.Logf("MinioBucketName: %v", Params.MinioBucketName)
 	})
+
+	t.Run("CreatedTime", func(t *testing.T) {
+		Params.CreatedTime = time.Now()
+		t.Logf("CreatedTime: %v", Params.CreatedTime)
+	})
+
+	t.Run("UpdatedTime", func(t *testing.T) {
+		Params.UpdatedTime = time.Now()
+		t.Logf("UpdatedTime: %v", Params.UpdatedTime)
+	})
 }
 
 //TODO: Params Load should be return error when key does not exist.