tailcfg: add views for ControlDialPlan (#5843)

3 files changed, 83 insertions, 3 deletions

diff --git a/tailcfg/tailcfg.go b/tailcfg/tailcfg.go
index dc4df564a..ab254a57e 100644
--- a/tailcfg/tailcfg.go
+++ b/tailcfg/tailcfg.go
@@ -4,7 +4,7 @@
 
 package tailcfg
 
-//go:generate go run tailscale.com/cmd/viewer --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal --clonefunc
+//go:generate go run tailscale.com/cmd/viewer --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal,ControlDialPlan --clonefunc
 
 import (
 	"bytes"
diff --git a/tailcfg/tailcfg_clone.go b/tailcfg/tailcfg_clone.go
index 4c24485d3..daec87fc9 100644
--- a/tailcfg/tailcfg_clone.go
+++ b/tailcfg/tailcfg_clone.go
@@ -398,9 +398,26 @@ var _SSHPrincipalCloneNeedsRegeneration = SSHPrincipal(struct {
 	PubKeys   []string
 }{})
 
+// Clone makes a deep copy of ControlDialPlan.
+// The result aliases no memory with the original.
+func (src *ControlDialPlan) Clone() *ControlDialPlan {
+	if src == nil {
+		return nil
+	}
+	dst := new(ControlDialPlan)
+	*dst = *src
+	dst.Candidates = append(src.Candidates[:0:0], src.Candidates...)
+	return dst
+}
+
+// A compilation failure here means this code must be regenerated, with the command at the top of this file.
+var _ControlDialPlanCloneNeedsRegeneration = ControlDialPlan(struct {
+	Candidates []ControlIPCandidate
+}{})
+
 // 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,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal.
+// where T is one of User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal,ControlDialPlan.
 func Clone(dst, src any) bool {
 	switch src := src.(type) {
 	case *User:
@@ -511,6 +528,15 @@ func Clone(dst, src any) bool {
 			*dst = src.Clone()
 			return true
 		}
+	case *ControlDialPlan:
+		switch dst := dst.(type) {
+		case *ControlDialPlan:
+			*dst = *src.Clone()
+			return true
+		case **ControlDialPlan:
+			*dst = src.Clone()
+			return true
+		}
 	}
 	return false
 }
diff --git a/tailcfg/tailcfg_view.go b/tailcfg/tailcfg_view.go
index ac1b58139..30da1d02b 100644
--- a/tailcfg/tailcfg_view.go
+++ b/tailcfg/tailcfg_view.go
@@ -21,7 +21,7 @@ import (
 	"tailscale.com/types/views"
 )
 
-//go:generate go run tailscale.com/cmd/cloner  -clonefunc=true -type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal
+//go:generate go run tailscale.com/cmd/cloner  -clonefunc=true -type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal,ControlDialPlan
 
 // View returns a readonly view of User.
 func (p *User) View() UserView {
@@ -923,3 +923,57 @@ var _SSHPrincipalViewNeedsRegeneration = SSHPrincipal(struct {
 	Any       bool
 	PubKeys   []string
 }{})
+
+// View returns a readonly view of ControlDialPlan.
+func (p *ControlDialPlan) View() ControlDialPlanView {
+	return ControlDialPlanView{ж: p}
+}
+
+// ControlDialPlanView provides a read-only view over ControlDialPlan.
+//
+// Its methods should only be called if `Valid()` returns true.
+type ControlDialPlanView 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 *ControlDialPlan
+}
+
+// Valid reports whether underlying value is non-nil.
+func (v ControlDialPlanView) Valid() bool { return v.ж != nil }
+
+// AsStruct returns a clone of the underlying value which aliases no memory with
+// the original.
+func (v ControlDialPlanView) AsStruct() *ControlDialPlan {
+	if v.ж == nil {
+		return nil
+	}
+	return v.ж.Clone()
+}
+
+func (v ControlDialPlanView) MarshalJSON() ([]byte, error) { return json.Marshal(v.ж) }
+
+func (v *ControlDialPlanView) UnmarshalJSON(b []byte) error {
+	if v.ж != nil {
+		return errors.New("already initialized")
+	}
+	if len(b) == 0 {
+		return nil
+	}
+	var x ControlDialPlan
+	if err := json.Unmarshal(b, &x); err != nil {
+		return err
+	}
+	v.ж = &x
+	return nil
+}
+
+func (v ControlDialPlanView) Candidates() views.Slice[ControlIPCandidate] {
+	return views.SliceOf(v.ж.Candidates)
+}
+
+// A compilation failure here means this code must be regenerated, with the command at the top of this file.
+var _ControlDialPlanViewNeedsRegeneration = ControlDialPlan(struct {
+	Candidates []ControlIPCandidate
+}{})