remove region env var and retrieve from config instead

Author: aniruddha2000

cmd/stackit-csi-plugin/main.go

@@ -103,11 +103,7 @@ func handle() {
 			iaasOpts = append(iaasOpts, sdkconfig.WithEndpoint(cfg.Global.APIEndpoints.IaasAPI))
 		}
 
-		region := os.Getenv("STACKIT_REGION")
-		if region == "" {
-			klog.Fatalf("The environment variable STACKIT_REGION must be set to the region of the cluster")
-		}
-		iaasClient, err := stackitclient.New(region, cfg.Global.ProjectID).IaaS(iaasOpts)
+		iaasClient, err := stackitclient.New(cfg.Global.Region, cfg.Global.ProjectID).IaaS(iaasOpts)
 		if err != nil {
 			klog.Fatalf("Failed to create STACKIT stackitclient: %v", err)
 		}

pkg/ccm/stackit.go

@@ -133,12 +133,7 @@ func NewCloudControllerManager(cfg *stackitconfig.CCMConfig, obs *MetricsRemoteW
 		lbOpts = append(lbOpts, sdkconfig.WithToken(lbEmergencyAPIToken))
 	}
 
-	region := os.Getenv("STACKIT_REGION")
-	if region == "" {
-		return nil, fmt.Errorf("STACKIT_REGION environment variable must be set")
-	}
-
-	loadbalancingClient, err := stackitclient.New(region, cfg.Global.ProjectID).LoadBalancing(lbOpts)
+	loadbalancingClient, err := stackitclient.New(cfg.Global.Region, cfg.Global.ProjectID).LoadBalancing(lbOpts)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create Load Balancing stackitclient: %v", err)
 	}
@@ -151,7 +146,7 @@ func NewCloudControllerManager(cfg *stackitconfig.CCMConfig, obs *MetricsRemoteW
 		iaasOpts = append(iaasOpts, sdkconfig.WithEndpoint(cfg.Global.APIEndpoints.IaasAPI))
 	}
 
-	iaasClient, err := stackitclient.New(region, cfg.Global.ProjectID).IaaS(iaasOpts)
+	iaasClient, err := stackitclient.New(cfg.Global.Region, cfg.Global.ProjectID).IaaS(iaasOpts)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create IaaS stackitclient: %v", err)
 	}