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Merge pull request #2227 from tailscale/jknodt/cloner

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cmd/cloner: support maps with clone ptrs
This commit is contained in:
Julian Knodt 2021-06-23 09:50:45 -07:00 committed by GitHub
commit 48883272ea
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 115 additions and 12 deletions
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4
cmd/cloner/cloner.go
View File

@ -246,7 +246,9 @@ func gen(buf *bytes.Buffer, imports map[string]struct{}, name string, typ *types
writef("\t\tdst.%s[k] = append([]%s{}, src.%s[k]...)", fname, n, fname)
writef("\t}")
} else if containsPointers(ft.Elem()) {
writef("\t\t" + `panic("TODO map value pointers")`)
writef("\tfor k, v := range src.%s {", fname)
writef("\t\tdst.%s[k] = v.Clone()", fname)
writef("\t}")
} else {
writef("\tfor k, v := range src.%s {", fname)
writef("\t\tdst.%s[k] = v", fname)

2
tailcfg/tailcfg.go
View File

@ -4,7 +4,7 @@
package tailcfg
//go:generate go run tailscale.com/cmd/cloner --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse --clonefunc=true --output=tailcfg_clone.go
//go:generate go run tailscale.com/cmd/cloner --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode --clonefunc=true --output=tailcfg_clone.go
import (
"encoding/hex"

121
tailcfg/tailcfg_clone.go
View File

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Code generated by tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse; DO NOT EDIT.
// Code generated by tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode; DO NOT EDIT.
package tailcfg
@ -26,7 +26,7 @@ func (src *User) Clone() *User {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _UserNeedsRegeneration = User(struct {
ID UserID
LoginName string
@ -62,7 +62,7 @@ func (src *Node) Clone() *Node {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _NodeNeedsRegeneration = Node(struct {
ID NodeID
StableID StableNodeID
@ -105,7 +105,7 @@ func (src *Hostinfo) Clone() *Hostinfo {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _HostinfoNeedsRegeneration = Hostinfo(struct {
IPNVersion string
FrontendLogID string
@ -142,7 +142,7 @@ func (src *NetInfo) Clone() *NetInfo {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _NetInfoNeedsRegeneration = NetInfo(struct {
MappingVariesByDestIP opt.Bool
HairPinning opt.Bool
@ -169,7 +169,7 @@ func (src *Login) Clone() *Login {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _LoginNeedsRegeneration = Login(struct {
_ structs.Incomparable
ID LoginID
@ -210,7 +210,7 @@ func (src *DNSConfig) Clone() *DNSConfig {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _DNSConfigNeedsRegeneration = DNSConfig(struct {
Resolvers []DNSResolver
Routes map[string][]DNSResolver
@ -236,7 +236,7 @@ func (src *DNSResolver) Clone() *DNSResolver {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _DNSResolverNeedsRegeneration = DNSResolver(struct {
Addr string
BootstrapResolution []netaddr.IP
@ -255,7 +255,7 @@ func (src *RegisterResponse) Clone() *RegisterResponse {
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _RegisterResponseNeedsRegeneration = RegisterResponse(struct {
User User
Login Login
@ -264,9 +264,83 @@ func (src *RegisterResponse) Clone() *RegisterResponse {
AuthURL string
}{})
// Clone makes a deep copy of DERPRegion.
// The result aliases no memory with the original.
func (src *DERPRegion) Clone() *DERPRegion {
if src == nil {
return nil
}
dst := new(DERPRegion)
*dst = *src
dst.Nodes = make([]*DERPNode, len(src.Nodes))
for i := range dst.Nodes {
dst.Nodes[i] = src.Nodes[i].Clone()
}
return dst
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _DERPRegionNeedsRegeneration = DERPRegion(struct {
RegionID int
RegionCode string
RegionName string
Avoid bool
Nodes []*DERPNode
}{})
// Clone makes a deep copy of DERPMap.
// The result aliases no memory with the original.
func (src *DERPMap) Clone() *DERPMap {
if src == nil {
return nil
}
dst := new(DERPMap)
*dst = *src
if dst.Regions != nil {
dst.Regions = map[int]*DERPRegion{}
for k, v := range src.Regions {
dst.Regions[k] = v.Clone()
}
}
return dst
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _DERPMapNeedsRegeneration = DERPMap(struct {
Regions map[int]*DERPRegion
}{})
// Clone makes a deep copy of DERPNode.
// The result aliases no memory with the original.
func (src *DERPNode) Clone() *DERPNode {
if src == nil {
return nil
}
dst := new(DERPNode)
*dst = *src
return dst
}
// A compilation failure here means this code must be regenerated, with command:
// tailscale.com/cmd/cloner -type User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode
var _DERPNodeNeedsRegeneration = DERPNode(struct {
Name string
RegionID int
HostName string
CertName string
IPv4 string
IPv6 string
STUNPort int
STUNOnly bool
DERPTestPort int
STUNTestIP string
}{})
// 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,DNSResolver,RegisterResponse.
// where T is one of User,Node,Hostinfo,NetInfo,Login,DNSConfig,DNSResolver,RegisterResponse,DERPRegion,DERPMap,DERPNode.
func Clone(dst, src interface{}) bool {
switch src := src.(type) {
case *User:
@ -341,6 +415,33 @@ func Clone(dst, src interface{}) bool {
*dst = src.Clone()
return true
}
case *DERPRegion:
switch dst := dst.(type) {
case *DERPRegion:
*dst = *src.Clone()
return true
case **DERPRegion:
*dst = src.Clone()
return true
}
case *DERPMap:
switch dst := dst.(type) {
case *DERPMap:
*dst = *src.Clone()
return true
case **DERPMap:
*dst = src.Clone()
return true
}
case *DERPNode:
switch dst := dst.(type) {
case *DERPNode:
*dst = *src.Clone()
return true
case **DERPNode:
*dst = src.Clone()
return true
}
}
return false
}