feat: Support for fqdn endpoint

README.md

@@ -27,4 +27,10 @@ Return all VM names and their IDs
 
 ### GET
 
-Return all assigned tags and their categories for the specified vm `:vm`.
+Return all assigned tags and their categories for the specified vm `:vm`.
+
+## /vms/:vm/fqdn
+
+### GET
+
+Return the fqdn of the specified vm `:vm` from the VMware guest tools

internal/api/vms.go

@@ -156,3 +156,41 @@ func GetVMTags(c internal.Config, username string, password string, VMID string)
 		}
 	}
 }
+
+type GuestNetworkingResponseDNSValues struct {
+	DomainName string `json:"domain_name"`
+	HostName   string `json:"host_name"`
+}
+
+type GuestNetworkingResponse struct {
+	DNSValues GuestNetworkingResponseDNSValues `json:"dns_values"`
+}
+
+// GetFQDN uses the VMware guest tools to get the fqdn of a VM (if possible)
+func GetFQDN(c internal.Config, username string, password string, VMID string) (string, error) {
+	if s, err := GetSession(c, username, password); err != nil {
+		return "", err
+	} else {
+		logrus.Debugf("Trying to figure out the fqdn for vm %s from %s for %s", VMID, c.Resty.BaseURL, username)
+
+		var guestNetworkingResponse GuestNetworkingResponse
+		if r, err := c.Resty.
+			R().
+			SetHeader("vmware-api-session-id", s).
+			SetResult(&guestNetworkingResponse).
+			SetPathParam("vm", VMID).
+			Get("/api/vcenter/vm/{vm}/guest/networking"); err != nil {
+			logrus.Error(err)
+			return "", err
+		} else {
+			if r.IsError() {
+				return "", fmt.Errorf("can not get FQDN (%s): %s", r.Status(), r.Body())
+			}
+			return fmt.Sprintf(
+				"%s.%s",
+				guestNetworkingResponse.DNSValues.HostName,
+				guestNetworkingResponse.DNSValues.DomainName,
+			), nil
+		}
+	}
+}

internal/endpoints/vms.go

@@ -23,6 +23,7 @@ func (V *VMSEndpoint) Register(engine *gin.Engine, config internal.Config) {
 	V.config = config
 	engine.GET("/vms", V.getVMS)
 	engine.GET("/vms/:vm/tags", V.getVMTags)
+	engine.GET("/vms/:vm/fqdn", V.getFQDN)
 }
 
 // getVMS exposes all vms of the vCenter at /vms
@@ -67,3 +68,24 @@ func (V *VMSEndpoint) getVMTags(context *gin.Context) {
 		}
 	}
 }
+
+func (V *VMSEndpoint) getFQDN(context *gin.Context) {
+	if r, ok := HandleRequest(context); ok {
+		var vm VMBinding
+		if err := context.ShouldBindUri(&vm); err != nil {
+			context.AbortWithStatusJSON(400, gin.H{
+				"error": fmt.Sprintf("Missing VM id in path: %s", err),
+			})
+			return
+		}
+		if fqdn, err := api.GetFQDN(V.config, r.Username, r.Password, vm.ID); err != nil {
+			context.AbortWithStatusJSON(500, gin.H{
+				"error": fmt.Sprintf("Error getting tags: %s", err),
+			})
+		} else {
+			context.JSON(200, gin.H{
+				"fqdn": fqdn,
+			})
+		}
+	}
+}