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client/local,types/netmap: modify services format in local api

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Updates the format of the service map that is served over
the local api to be keyed without the "svc:" prefix. This
change is backwards incompatible, this is OK because there
is only one tailnet with the services-in-nodecapmap feature
flag enabled, and the client side changes that start showing
services over local api have not been released. (These were
added in 4fcce6000d).

Updates tailscale/corp#40052

Signed-off-by: Adriano Sela Aviles <adriano@tailscale.com>
This commit is contained in:
Adriano Sela Aviles
2026-04-17 12:23:13 -07:00
committed by Adriano Sela Aviles
parent 514d7d28e7
commit 618dfd4081
2 changed files with 11 additions and 9 deletions
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13
types/netmap/netmap.go
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@@ -148,17 +148,16 @@ func (nm *NetworkMap) GetIPVIPServiceMap() IPServiceMappings {
// Services returns the Services visible (accessible) to this node,
// decoded from [tailcfg.NodeAttrPrefixServices] entries in the self node's
// CapMap. The returned map is keyed by [tailcfg.ServiceDetails.Name], which is
// the canonical service name; the NodeCapMap key suffix is opaque and must not
// be parsed or relied upon. It returns nil if nm is nil or SelfNode is invalid.
// CapMap. The returned map is keyed by service name without the "svc:" prefix.
// It returns nil if nm is nil or SelfNode is invalid.
//
// TODO(adrianosela): cache the result of decoding the capmap so
// we don't have to decode it multiple times after each netmap update.
func (nm *NetworkMap) Services() map[tailcfg.ServiceName]tailcfg.ServiceDetails {
func (nm *NetworkMap) Services() map[string]tailcfg.ServiceDetails {
if nm == nil || !nm.SelfNode.Valid() {
return nil
}
result := make(map[tailcfg.ServiceName]tailcfg.ServiceDetails)
result := make(map[string]tailcfg.ServiceDetails)
for cap := range nm.SelfNode.CapMap().All() {
if !strings.HasPrefix(string(cap), string(tailcfg.NodeAttrPrefixServices)) {
continue
@@ -167,7 +166,9 @@ func (nm *NetworkMap) Services() map[tailcfg.ServiceName]tailcfg.ServiceDetails
if err != nil || len(svcs) < 1 {
continue
}
result[svcs[0].Name] = svcs[0]
// NOTE(adrianosela): the NodeCapMap key suffix is opaque and MUST not
// be parsed or relied upon (so we extract name from the inner field).
result[svcs[0].Name.WithoutPrefix()] = svcs[0]
}
return result
}