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87481282eb
This one doesn't bother me so much, as long term we want a synonym here. Fixes #2384 Fixes #2386 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
181 lines
3.1 KiB
Go
181 lines
3.1 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ipn
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import (
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"sync"
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"time"
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"inet.af/netaddr"
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"tailscale.com/tailcfg"
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"tailscale.com/types/logger"
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"tailscale.com/types/netmap"
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)
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type Handle struct {
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b Backend
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logf logger.Logf
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// Mutex protects everything below
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mu sync.Mutex
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xnotify func(Notify)
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frontendLogID string
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netmapCache *netmap.NetworkMap
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engineStatusCache EngineStatus
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stateCache State
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prefsCache *Prefs
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}
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func NewHandle(b Backend, logf logger.Logf, notify func(Notify), opts Options) (*Handle, error) {
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h := &Handle{
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b: b,
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logf: logf,
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}
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h.SetNotifyCallback(notify)
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err := h.Start(opts)
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if err != nil {
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return nil, err
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}
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return h, nil
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}
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func (h *Handle) SetNotifyCallback(notify func(Notify)) {
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h.mu.Lock()
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h.xnotify = notify
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h.mu.Unlock()
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h.b.SetNotifyCallback(h.notify)
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}
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func (h *Handle) Start(opts Options) error {
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h.mu.Lock()
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h.frontendLogID = opts.FrontendLogID
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h.netmapCache = nil
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h.engineStatusCache = EngineStatus{}
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h.stateCache = NoState
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if opts.Prefs != nil {
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h.prefsCache = opts.Prefs.Clone()
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}
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h.mu.Unlock()
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return h.b.Start(opts)
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}
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func (h *Handle) Reset() {
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st := NoState
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h.notify(Notify{State: &st})
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}
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func (h *Handle) notify(n Notify) {
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h.mu.Lock()
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if n.BackendLogID != nil {
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h.logf("Handle: logs: be:%v fe:%v",
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*n.BackendLogID, h.frontendLogID)
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}
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if n.State != nil {
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h.stateCache = *n.State
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}
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if n.Prefs != nil {
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h.prefsCache = n.Prefs.Clone()
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}
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if n.NetMap != nil {
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h.netmapCache = n.NetMap
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}
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if n.Engine != nil {
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h.engineStatusCache = *n.Engine
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}
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h.mu.Unlock()
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if h.xnotify != nil {
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// Forward onward to our parent's notifier
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h.xnotify(n)
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}
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}
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func (h *Handle) Prefs() *Prefs {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.prefsCache.Clone()
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}
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func (h *Handle) UpdatePrefs(updateFn func(p *Prefs)) {
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h.mu.Lock()
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defer h.mu.Unlock()
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new := h.prefsCache.Clone()
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updateFn(new)
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h.prefsCache = new
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h.b.SetPrefs(new)
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}
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func (h *Handle) State() State {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.stateCache
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}
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func (h *Handle) EngineStatus() EngineStatus {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.engineStatusCache
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}
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func (h *Handle) LocalAddrs() []netaddr.IPPrefix {
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h.mu.Lock()
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defer h.mu.Unlock()
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nm := h.netmapCache
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if nm != nil {
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return nm.Addresses
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}
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return []netaddr.IPPrefix{}
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}
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func (h *Handle) NetMap() *netmap.NetworkMap {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.netmapCache
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}
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func (h *Handle) Expiry() time.Time {
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h.mu.Lock()
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defer h.mu.Unlock()
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nm := h.netmapCache
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if nm != nil {
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return nm.Expiry
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}
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return time.Time{}
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}
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func (h *Handle) AdminPageURL() string {
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return h.prefsCache.AdminPageURL()
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}
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func (h *Handle) StartLoginInteractive() {
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h.b.StartLoginInteractive()
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}
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func (h *Handle) Login(token *tailcfg.Oauth2Token) {
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h.b.Login(token)
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}
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func (h *Handle) Logout() {
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h.b.Logout()
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}
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func (h *Handle) RequestEngineStatus() {
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h.b.RequestEngineStatus()
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}
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func (h *Handle) FakeExpireAfter(x time.Duration) {
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h.b.FakeExpireAfter(x)
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}
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