Merge pull request #932 from ellemouton/context

multi: thread contexts through properly

accounts/checkers_test.go

@@ -499,8 +499,8 @@ func TestSendPaymentCalls(t *testing.T) {
 
 func testSendPayment(t *testing.T, uri string) {
 	var (
-		parentCtx = context.Background()
-		zeroFee   = &lnrpc.FeeLimit{Limit: &lnrpc.FeeLimit_Fixed{
+		ctx     = context.Background()
+		zeroFee = &lnrpc.FeeLimit{Limit: &lnrpc.FeeLimit_Fixed{
 			Fixed: 0,
 		}}
 		requestID uint64
@@ -520,7 +520,7 @@ func testSendPayment(t *testing.T, uri string) {
 	service, err := NewService(t.TempDir(), errFunc)
 	require.NoError(t, err)
 
-	err = service.Start(lndMock, routerMock, chainParams)
+	err = service.Start(ctx, lndMock, routerMock, chainParams)
 	require.NoError(t, err)
 
 	assertBalance := func(id AccountID, expectedBalance int64) {
@@ -533,7 +533,7 @@ func testSendPayment(t *testing.T, uri string) {
 
 	// This should error because there is no account in the context.
 	err = service.checkers.checkIncomingRequest(
-		parentCtx, uri, &lnrpc.SendRequest{},
+		ctx, uri, &lnrpc.SendRequest{},
 	)
 	require.ErrorContains(t, err, "no account found in context")
 
@@ -543,7 +543,7 @@ func testSendPayment(t *testing.T, uri string) {
 	)
 	require.NoError(t, err)
 
-	ctxWithAcct := AddAccountToContext(parentCtx, acct)
+	ctxWithAcct := AddAccountToContext(ctx, acct)
 
 	// This should error because there is no request ID in the context.
 	err = service.checkers.checkIncomingRequest(
@@ -552,7 +552,7 @@ func testSendPayment(t *testing.T, uri string) {
 	require.ErrorContains(t, err, "no request ID found in context")
 
 	reqID1 := nextRequestID()
-	ctx := AddRequestIDToContext(ctxWithAcct, reqID1)
+	ctx = AddRequestIDToContext(ctxWithAcct, reqID1)
 
 	// This should error because no payment hash is provided.
 	err = service.checkers.checkIncomingRequest(
@@ -698,7 +698,7 @@ func testSendPayment(t *testing.T, uri string) {
 func TestSendPaymentV2(t *testing.T) {
 	var (
 		uri       = "/routerrpc.Router/SendPaymentV2"
-		parentCtx = context.Background()
+		ctx       = context.Background()
 		requestID uint64
 	)
 
@@ -716,7 +716,7 @@ func TestSendPaymentV2(t *testing.T) {
 	service, err := NewService(t.TempDir(), errFunc)
 	require.NoError(t, err)
 
-	err = service.Start(lndMock, routerMock, chainParams)
+	err = service.Start(ctx, lndMock, routerMock, chainParams)
 	require.NoError(t, err)
 
 	assertBalance := func(id AccountID, expectedBalance int64) {
@@ -729,7 +729,7 @@ func TestSendPaymentV2(t *testing.T) {
 
 	// This should error because there is no account in the context.
 	err = service.checkers.checkIncomingRequest(
-		parentCtx, uri, &routerrpc.SendPaymentRequest{},
+		ctx, uri, &routerrpc.SendPaymentRequest{},
 	)
 	require.ErrorContains(t, err, "no account found in context")
 
@@ -739,7 +739,7 @@ func TestSendPaymentV2(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	ctxWithAcct := AddAccountToContext(parentCtx, acct)
+	ctxWithAcct := AddAccountToContext(ctx, acct)
 
 	// This should error because there is no request ID in the context.
 	err = service.checkers.checkIncomingRequest(
@@ -748,7 +748,7 @@ func TestSendPaymentV2(t *testing.T) {
 	require.ErrorContains(t, err, "no request ID found in context")
 
 	reqID1 := nextRequestID()
-	ctx := AddRequestIDToContext(ctxWithAcct, reqID1)
+	ctx = AddRequestIDToContext(ctxWithAcct, reqID1)
 
 	// This should error because no payment hash is provided.
 	err = service.checkers.checkIncomingRequest(
@@ -885,7 +885,7 @@ func TestSendPaymentV2(t *testing.T) {
 func TestSendToRouteV2(t *testing.T) {
 	var (
 		uri       = "/routerrpc.Router/SendToRouteV2"
-		parentCtx = context.Background()
+		ctx       = context.Background()
 		requestID uint64
 	)
 
@@ -903,7 +903,7 @@ func TestSendToRouteV2(t *testing.T) {
 	service, err := NewService(t.TempDir(), errFunc)
 	require.NoError(t, err)
 
-	err = service.Start(lndMock, routerMock, chainParams)
+	err = service.Start(ctx, lndMock, routerMock, chainParams)
 	require.NoError(t, err)
 
 	assertBalance := func(id AccountID, expectedBalance int64) {
@@ -916,7 +916,7 @@ func TestSendToRouteV2(t *testing.T) {
 
 	// This should error because there is no account in the context.
 	err = service.checkers.checkIncomingRequest(
-		parentCtx, uri, &routerrpc.SendToRouteRequest{},
+		ctx, uri, &routerrpc.SendToRouteRequest{},
 	)
 	require.ErrorContains(t, err, "no account found in context")
 
@@ -926,7 +926,7 @@ func TestSendToRouteV2(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	ctxWithAcct := AddAccountToContext(parentCtx, acct)
+	ctxWithAcct := AddAccountToContext(ctx, acct)
 
 	// This should error because there is no request ID in the context.
 	err = service.checkers.checkIncomingRequest(
@@ -935,7 +935,7 @@ func TestSendToRouteV2(t *testing.T) {
 	require.ErrorContains(t, err, "no request ID found in context")
 
 	reqID1 := nextRequestID()
-	ctx := AddRequestIDToContext(ctxWithAcct, reqID1)
+	ctx = AddRequestIDToContext(ctxWithAcct, reqID1)
 
 	// This should error because no payment hash is provided.
 	err = service.checkers.checkIncomingRequest(

accounts/service.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/btcsuite/btcd/chaincfg"
 	"github.com/lightninglabs/lndclient"
+	"github.com/lightninglabs/taproot-assets/fn"
 	"github.com/lightningnetwork/lnd/channeldb"
 	invpkg "github.com/lightningnetwork/lnd/invoices"
 	"github.com/lightningnetwork/lnd/lnrpc"
@@ -55,7 +56,7 @@ type InterceptorService struct {
 	routerClient lndclient.RouterClient
 
 	mainCtx       context.Context
-	contextCancel context.CancelFunc
+	contextCancel fn.Option[context.CancelFunc]
 
 	requestMtx sync.Mutex
 	checkers   *AccountChecker
@@ -85,12 +86,8 @@ func NewService(dir string,
 		return nil, err
 	}
 
-	mainCtx, contextCancel := context.WithCancel(context.Background())
-
 	return &InterceptorService{
 		store:              accountStore,
-		mainCtx:            mainCtx,
-		contextCancel:      contextCancel,
 		invoiceToAccount:   make(map[lntypes.Hash]AccountID),
 		pendingPayments:    make(map[lntypes.Hash]*trackedPayment),
 		requestValuesStore: newRequestValuesStore(),
@@ -101,9 +98,14 @@ func NewService(dir string,
 }
 
 // Start starts the account service and its interceptor capability.
-func (s *InterceptorService) Start(lightningClient lndclient.LightningClient,
+func (s *InterceptorService) Start(ctx context.Context,
+	lightningClient lndclient.LightningClient,
 	routerClient lndclient.RouterClient, params *chaincfg.Params) error {
 
+	mainCtx, contextCancel := context.WithCancel(ctx)
+	s.mainCtx = mainCtx
+	s.contextCancel = fn.Some(contextCancel)
+
 	s.routerClient = routerClient
 	s.checkers = NewAccountChecker(s, params)
 
@@ -180,7 +182,7 @@ func (s *InterceptorService) Start(lightningClient lndclient.LightningClient,
 	s.wg.Add(1)
 	go func() {
 		defer s.wg.Done()
-		defer s.contextCancel()
+		defer contextCancel()
 
 		for {
 			select {
@@ -235,9 +237,8 @@ func (s *InterceptorService) Stop() error {
 	s.requestMtx.Lock()
 	defer s.requestMtx.Unlock()
 
-	s.contextCancel()
+	s.contextCancel.WhenSome(func(fn context.CancelFunc) { fn() })
 	close(s.quit)
-
 	s.wg.Wait()
 
 	return s.store.Close()

accounts/service_test.go

@@ -838,7 +838,10 @@ func TestAccountService(t *testing.T) {
 			}
 
 			// Any errors during startup expected?
-			err = service.Start(lndMock, routerMock, chainParams)
+			err = service.Start(
+				context.Background(), lndMock, routerMock,
+				chainParams,
+			)
 			if tc.startupErr != "" {
 				require.ErrorContains(tt, err, tc.startupErr)
 

autopilotserver/client.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/lightninglabs/lightning-terminal/autopilotserverrpc"
+	"github.com/lightninglabs/taproot-assets/fn"
 	"github.com/lightningnetwork/lnd/tor"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
@@ -88,8 +89,9 @@ type Client struct {
 
 	featurePerms *featurePerms
 
-	quit chan struct{}
-	wg   sync.WaitGroup
+	quit   chan struct{}
+	wg     sync.WaitGroup
+	cancel fn.Option[context.CancelFunc]
 }
 
 type session struct {
@@ -124,16 +126,19 @@ func NewClient(cfg *Config) (Autopilot, error) {
 }
 
 // Start kicks off all the goroutines required by the Client.
-func (c *Client) Start(opts ...func(cfg *Config)) error {
+func (c *Client) Start(ctx context.Context, opts ...func(cfg *Config)) error {
 	var startErr error
 	c.start.Do(func() {
 		log.Infof("Starting Autopilot Client")
 
+		ctx, cancel := context.WithCancel(ctx)
+		c.cancel = fn.Some(cancel)
+
 		for _, o := range opts {
 			o(c.cfg)
 		}
 
-		version, err := c.getMinVersion(context.Background())
+		version, err := c.getMinVersion(ctx)
 		if err != nil {
 			startErr = err
 			return
@@ -154,8 +159,8 @@ func (c *Client) Start(opts ...func(cfg *Config)) error {
 		}
 
 		c.wg.Add(2)
-		go c.activateSessionsForever()
-		go c.updateFeaturePermsForever()
+		go c.activateSessionsForever(ctx)
+		go c.updateFeaturePermsForever(ctx)
 	})
 
 	return startErr
@@ -164,6 +169,7 @@ func (c *Client) Start(opts ...func(cfg *Config)) error {
 // Stop cleans up any resources or goroutines managed by the Client.
 func (c *Client) Stop() {
 	c.stop.Do(func() {
+		c.cancel.WhenSome(func(fn context.CancelFunc) { fn() })
 		close(c.quit)
 		c.wg.Wait()
 	})
@@ -222,10 +228,9 @@ func (c *Client) SessionRevoked(ctx context.Context, pubKey *btcec.PublicKey) {
 
 // activateSessionsForever periodically ensures that each of our active
 // autopilot sessions are known by the autopilot to be active.
-func (c *Client) activateSessionsForever() {
+func (c *Client) activateSessionsForever(ctx context.Context) {
 	defer c.wg.Done()
 
-	ctx := context.Background()
 	ticker := time.NewTicker(c.cfg.PingCadence)
 	defer ticker.Stop()
 
@@ -273,10 +278,9 @@ func (c *Client) activateSessionsForever() {
 // feature permissions list.
 //
 // NOTE: this MUST be called in a goroutine.
-func (c *Client) updateFeaturePermsForever() {
+func (c *Client) updateFeaturePermsForever(ctx context.Context) {
 	defer c.wg.Done()
 
-	ctx := context.Background()
 	ticker := time.NewTicker(time.Second)
 	defer ticker.Stop()
 

autopilotserver/client_test.go

@@ -32,7 +32,7 @@ func TestAutopilotClient(t *testing.T) {
 		PingCadence: time.Second,
 	})
 	require.NoError(t, err)
-	require.NoError(t, client.Start())
+	require.NoError(t, client.Start(ctx))
 	t.Cleanup(client.Stop)
 
 	privKey, err := btcec.NewPrivateKey()

autopilotserver/interface.go

@@ -45,7 +45,7 @@ type Autopilot interface {
 	SessionRevoked(ctx context.Context, key *btcec.PublicKey)
 
 	// Start kicks off the goroutines of the client.
-	Start(opts ...func(cfg *Config)) error
+	Start(ctx context.Context, opts ...func(cfg *Config)) error
 
 	// Stop cleans up any resources held by the client.
 	Stop()