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feature/taildrop: move rest of Taildrop out of LocalBackend

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Updates #12614

Change-Id: If451dec1d796f6a4216fe485975c87f0c62a53e5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Co-authored-by: Nick Khyl <nickk@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-05-02 17:49:23 -07:00
committed by Brad Fitzpatrick
parent cf6a593196
commit 068d5ab655
21 changed files with 691 additions and 555 deletions
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49
ipn/ipnext/ipnext.go
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@@ -9,11 +9,14 @@ import (
"errors"
"fmt"
"iter"
"net/netip"
"tailscale.com/control/controlclient"
"tailscale.com/feature"
"tailscale.com/ipn"
"tailscale.com/ipn/ipnauth"
"tailscale.com/ipn/ipnstate"
"tailscale.com/tailcfg"
"tailscale.com/tsd"
"tailscale.com/tstime"
"tailscale.com/types/logger"
@@ -191,6 +194,10 @@ type Host interface {
// SendNotifyAsync sends a notification to the IPN bus,
// typically to the GUI client.
SendNotifyAsync(ipn.Notify)
// NodeBackend returns the [NodeBackend] for the currently active node
// (which is approximately the same as the current profile).
NodeBackend() NodeBackend
}
// SafeBackend is a subset of the [ipnlocal.LocalBackend] type's methods that
@@ -323,7 +330,9 @@ type NewControlClientCallback func(controlclient.Client, ipn.LoginProfileView) (
// Each hook has its own rules about when it's called and what environment it
// has access to and what it's allowed to do.
type Hooks struct {
// ProfileStateChange are callbacks that are invoked when the current login profile
// BackendStateChange is called when the backend state changes.
BackendStateChange feature.Hooks[func(ipn.State)]
// or its [ipn.Prefs] change, after those changes have been made. The current login profile
// may be changed either because of a profile switch, or because the profile information
// was updated by [LocalBackend.SetControlClientStatus], including when the profile
@@ -347,4 +356,42 @@ type Hooks struct {
// NewControlClient are the functions to be called when a new control client
// is created. It is called with the LocalBackend locked.
NewControlClient feature.Hooks[NewControlClientCallback]
// OnSelfChange is called (with LocalBackend.mu held) when the self node
// changes, including changing to nothing (an invalid view).
OnSelfChange feature.Hooks[func(tailcfg.NodeView)]
// MutateNotifyLocked is called to optionally mutate the provided Notify
// before sending it to the IPN bus. It is called with LocalBackend.mu held.
MutateNotifyLocked feature.Hooks[func(*ipn.Notify)]
// SetPeerStatus is called to mutate PeerStatus.
// Callers must only use NodeBackend to read data.
SetPeerStatus feature.Hooks[func(*ipnstate.PeerStatus, tailcfg.NodeView, NodeBackend)]
}
// NodeBackend is an interface to query the current node and its peers.
//
// It is not a snapshot in time but is locked to a particular node.
type NodeBackend interface {
// AppendMatchingPeers appends all peers that match the predicate
// to the base slice and returns it.
AppendMatchingPeers(base []tailcfg.NodeView, pred func(tailcfg.NodeView) bool) []tailcfg.NodeView
// PeerCaps returns the capabilities that src has to this node.
PeerCaps(src netip.Addr) tailcfg.PeerCapMap
// PeerHasCap reports whether the peer has the specified peer capability.
PeerHasCap(peer tailcfg.NodeView, cap tailcfg.PeerCapability) bool
// PeerAPIBase returns the "http://ip:port" URL base to reach peer's
// PeerAPI, or the empty string if the peer is invalid or doesn't support
// PeerAPI.
PeerAPIBase(tailcfg.NodeView) string
// PeerHasPeerAPI whether the provided peer supports PeerAPI.
//
// It effectively just reports whether PeerAPIBase(node) is non-empty, but
// potentially more efficiently.
PeerHasPeerAPI(tailcfg.NodeView) bool
}