Expose created time and updated time to proxy metrics (#9727)

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

internal/proxy/metrics_info.go

@@ -65,8 +65,9 @@ func getSystemInfoMetrics(
 					SystemVersion: os.Getenv(metricsinfo.GitCommitEnvKey),
 					DeployMode:    os.Getenv(metricsinfo.DeployModeEnvKey),
 				},
-				// TODO(dragondriver): CreatedTime & UpdatedTime, easy but time-costing
-				Type: typeutil.ProxyRole,
+				CreatedTime: Params.CreatedTime.String(),
+				UpdatedTime: Params.UpdatedTime.String(),
+				Type:        typeutil.ProxyRole,
 			},
 			SystemConfigurations: metricsinfo.ProxyConfiguration{
 				DefaultPartitionName: Params.DefaultPartitionName,

internal/proxy/param_table.go

@@ -65,6 +65,9 @@ type ParamTable struct {
 	MaxTaskNum int64
 
 	PulsarMaxMessageSize int
+
+	CreatedTime time.Time
+	UpdatedTime time.Time
 }
 
 var Params ParamTable

internal/proxy/proxy.go

@@ -316,6 +316,9 @@ func (node *Proxy) Start() error {
 		cb()
 	}
 
+	Params.CreatedTime = time.Now()
+	Params.UpdatedTime = time.Now()
+
 	node.UpdateStateCode(internalpb.StateCode_Healthy)
 	log.Debug("Proxy", zap.Any("State", node.stateCode.Load()))