tailcfg: add VIPServiceView

Not currently used in the OSS tree, a View for tailcfg.VIPService will
make implementing some server side changes easier.

Updates tailscale/corp#26272

Change-Id: If1ed0bea4eff8c4425d3845b433a1c562d99eb9e
Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>

tailcfg/tailcfg.go

@@ -5,7 +5,7 @@
 // the node and the coordination server.
 package tailcfg
 
-//go:generate go run tailscale.com/cmd/viewer --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile --clonefunc
+//go:generate go run tailscale.com/cmd/viewer --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile,VIPService --clonefunc
 
 import (
 	"bytes"

tailcfg/tailcfg_clone.go

@@ -626,9 +626,28 @@ var _UserProfileCloneNeedsRegeneration = UserProfile(struct {
 	ProfilePicURL string
 }{})
 
+// Clone makes a deep copy of VIPService.
+// The result aliases no memory with the original.
+func (src *VIPService) Clone() *VIPService {
+	if src == nil {
+		return nil
+	}
+	dst := new(VIPService)
+	*dst = *src
+	dst.Ports = append(src.Ports[:0:0], src.Ports...)
+	return dst
+}
+
+// A compilation failure here means this code must be regenerated, with the command at the top of this file.
+var _VIPServiceCloneNeedsRegeneration = VIPService(struct {
+	Name   ServiceName
+	Ports  []ProtoPortRange
+	Active bool
+}{})
+
 // Clone duplicates src into dst and reports whether it succeeded.
 // To succeed, <src, dst> must be of types <*T, *T> or <*T, **T>,
-// where T is one of User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile.
+// where T is one of User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile,VIPService.
 func Clone(dst, src any) bool {
 	switch src := src.(type) {
 	case *User:
@@ -802,6 +821,15 @@ func Clone(dst, src any) bool {
 			*dst = src.Clone()
 			return true
 		}
+	case *VIPService:
+		switch dst := dst.(type) {
+		case *VIPService:
+			*dst = *src.Clone()
+			return true
+		case **VIPService:
+			*dst = src.Clone()
+			return true
+		}
 	}
 	return false
 }

tailcfg/tailcfg_view.go

@@ -19,7 +19,7 @@ import (
 	"tailscale.com/types/views"
 )
 
-//go:generate go run tailscale.com/cmd/cloner  -clonefunc=true -type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile
+//go:generate go run tailscale.com/cmd/cloner  -clonefunc=true -type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,RegisterResponseAuth,RegisterRequest,DERPHomeParams,DERPRegion,DERPMap,DERPNode,SSHRule,SSHAction,SSHPrincipal,ControlDialPlan,Location,UserProfile,VIPService
 
 // View returns a read-only view of User.
 func (p *User) View() UserView {
@@ -1414,3 +1414,59 @@ var _UserProfileViewNeedsRegeneration = UserProfile(struct {
 	DisplayName   string
 	ProfilePicURL string
 }{})
+
+// View returns a read-only view of VIPService.
+func (p *VIPService) View() VIPServiceView {
+	return VIPServiceView{ж: p}
+}
+
+// VIPServiceView provides a read-only view over VIPService.
+//
+// Its methods should only be called if `Valid()` returns true.
+type VIPServiceView struct {
+	// ж is the underlying mutable value, named with a hard-to-type
+	// character that looks pointy like a pointer.
+	// It is named distinctively to make you think of how dangerous it is to escape
+	// to callers. You must not let callers be able to mutate it.
+	ж *VIPService
+}
+
+// Valid reports whether v's underlying value is non-nil.
+func (v VIPServiceView) Valid() bool { return v.ж != nil }
+
+// AsStruct returns a clone of the underlying value which aliases no memory with
+// the original.
+func (v VIPServiceView) AsStruct() *VIPService {
+	if v.ж == nil {
+		return nil
+	}
+	return v.ж.Clone()
+}
+
+func (v VIPServiceView) MarshalJSON() ([]byte, error) { return json.Marshal(v.ж) }
+
+func (v *VIPServiceView) UnmarshalJSON(b []byte) error {
+	if v.ж != nil {
+		return errors.New("already initialized")
+	}
+	if len(b) == 0 {
+		return nil
+	}
+	var x VIPService
+	if err := json.Unmarshal(b, &x); err != nil {
+		return err
+	}
+	v.ж = &x
+	return nil
+}
+
+func (v VIPServiceView) Name() ServiceName                  { return v.ж.Name }
+func (v VIPServiceView) Ports() views.Slice[ProtoPortRange] { return views.SliceOf(v.ж.Ports) }
+func (v VIPServiceView) Active() bool                       { return v.ж.Active }
+
+// A compilation failure here means this code must be regenerated, with the command at the top of this file.
+var _VIPServiceViewNeedsRegeneration = VIPService(struct {
+	Name   ServiceName
+	Ports  []ProtoPortRange
+	Active bool
+}{})