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4cca63155d
Every Go-identifier reference in // and /* */ comments now uses
godoc's [Name] linking syntax so pkg.go.dev and `go doc` render
them as clickable cross-references. No behaviour change.
Pattern applied across the tree:
In-package [Foo], [Foo.Bar]
Cross-package [pkg.Foo], [pkg.Foo.Bar]
Stdlib [netip.Prefix], [errors.Is], [context.Context]
Tailscale [tailcfg.MapResponse], [tailcfg.Node.CapMap],
[tailcfg.NodeAttrSuggestExitNode]
Skip rules:
- File:line refs left as plain text
- HuJSON wire keys inside backtick raw strings untouched
- ACL/policy syntax tokens (tag:foo, autogroup:self, ...) not Go
symbols, left as plain text
- JSON/OIDC wire keys, gorm tags, RFC IPv6 placeholders, markdown
link tags, decorative dividers — all left as-is
52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
// Package state provides pure functions for processing [tailcfg.MapRequest] data.
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// These functions are extracted from [State.UpdateNodeFromMapRequest] to improve
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// testability and maintainability.
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package state
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import (
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"github.com/juanfont/headscale/hscontrol/types"
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"github.com/rs/zerolog/log"
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"tailscale.com/tailcfg"
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)
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// netInfoFromMapRequest determines the correct [tailcfg.NetInfo] to use.
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// Returns the [tailcfg.NetInfo] that should be used for this request.
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func netInfoFromMapRequest(
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nodeID types.NodeID,
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currentHostinfo *tailcfg.Hostinfo,
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reqHostinfo *tailcfg.Hostinfo,
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) *tailcfg.NetInfo {
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// If request has [tailcfg.NetInfo], use it
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if reqHostinfo != nil && reqHostinfo.NetInfo != nil {
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return reqHostinfo.NetInfo
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}
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// Otherwise, use current [tailcfg.NetInfo] if available
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if currentHostinfo != nil && currentHostinfo.NetInfo != nil {
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log.Debug().
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Caller().
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Uint64("node.id", nodeID.Uint64()).
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Int("preferredDERP", currentHostinfo.NetInfo.PreferredDERP).
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Msg("using NetInfo from previous Hostinfo in MapRequest")
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return currentHostinfo.NetInfo
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}
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// No [tailcfg.NetInfo] available anywhere - log for debugging
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var hostname string
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if reqHostinfo != nil {
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hostname = reqHostinfo.Hostname
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} else if currentHostinfo != nil {
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hostname = currentHostinfo.Hostname
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}
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log.Debug().
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Caller().
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Uint64("node.id", nodeID.Uint64()).
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Str("node.hostname", hostname).
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Msg("node sent update but has no NetInfo in request or database")
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return nil
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}
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