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https://github.com/lightningnetwork/lnd.git
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protofsm: use prefixed logger for StateMachine
So that we dont have to remember to add the `FSM(%v)` prefix each time we write a log line.
This commit is contained in:
Elle Mouton
parent
b887c1cc5d
commit
575ea7af83
2 changed files with 34 additions and 43 deletions
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@ -1,7 +1,7 @@
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package protofsm
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import (
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"github.com/btcsuite/btclog"
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"github.com/btcsuite/btclog/v2"
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"github.com/lightningnetwork/lnd/build"
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)
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@ -9,6 +9,7 @@ import (
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btclog/v2"
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"github.com/lightningnetwork/lnd/chainntnfs"
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"github.com/lightningnetwork/lnd/fn/v2"
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"github.com/lightningnetwork/lnd/lnutils"
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@ -130,6 +131,8 @@ type stateQuery[Event any, Env Environment] struct {
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type StateMachine[Event any, Env Environment] struct {
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cfg StateMachineCfg[Event, Env]
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log btclog.Logger
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// events is the channel that will be used to send new events to the
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// FSM.
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events chan Event
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@ -198,6 +201,9 @@ func NewStateMachine[Event any, Env Environment](
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return StateMachine[Event, Env]{
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cfg: cfg,
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log: log.WithPrefix(
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fmt.Sprintf("FSM(%v):", cfg.Env.Name()),
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),
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events: make(chan Event, 1),
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stateQuery: make(chan stateQuery[Event, Env]),
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wg: *fn.NewGoroutineManager(),
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@ -229,9 +235,7 @@ func (s *StateMachine[Event, Env]) Stop() {
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//
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// TODO(roasbeef): bool if processed?
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func (s *StateMachine[Event, Env]) SendEvent(ctx context.Context, event Event) {
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log.Debugf("FSM(%v): sending event: %v", s.cfg.Env.Name(),
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lnutils.SpewLogClosure(event),
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)
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s.log.Debugf("Sending event: %v", lnutils.SpewLogClosure(event))
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select {
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case s.events <- event:
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@ -269,9 +273,7 @@ func (s *StateMachine[Event, Env]) SendMessage(ctx context.Context,
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return false
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}
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log.Debugf("FSM(%v): sending msg: %v", s.cfg.Env.Name(),
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lnutils.SpewLogClosure(msg),
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)
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s.log.Debugf("Sending msg: %v", lnutils.SpewLogClosure(msg))
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// Otherwise, try to map the message using the default message mapper.
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// If we can't extract an event, then we'll return false to indicate
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@ -342,11 +344,10 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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// any preconditions as well as post-send events.
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case *SendMsgEvent[Event]:
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sendAndCleanUp := func() error {
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log.Debugf("FSM(%v): sending message to target(%x): "+
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"%v", s.cfg.Env.Name(),
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s.log.Debugf("Sending message to target(%x): "+
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"%v",
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daemonEvent.TargetPeer.SerializeCompressed(),
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lnutils.SpewLogClosure(daemonEvent.Msgs),
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)
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lnutils.SpewLogClosure(daemonEvent.Msgs))
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err := s.cfg.Daemon.SendMessages(
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daemonEvent.TargetPeer, daemonEvent.Msgs,
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@ -361,9 +362,8 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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return fn.MapOptionZ(daemonEvent.PostSendEvent, func(event Event) error { //nolint:ll
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launched := s.wg.Go(
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ctx, func(ctx context.Context) {
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log.Debugf("FSM(%v): sending "+
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s.log.Debugf("Sending "+
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"post-send event: %v",
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s.cfg.Env.Name(),
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lnutils.SpewLogClosure(event))
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s.SendEvent(ctx, event)
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@ -393,8 +393,7 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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)
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defer predicateTicker.Stop()
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log.Infof("FSM(%v): waiting for send predicate to "+
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"be true", s.cfg.Env.Name())
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s.log.Infof("Waiting for send predicate to be true")
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for {
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select {
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@ -407,14 +406,13 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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)
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if canSend {
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log.Infof("FSM(%v): send "+
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"active predicate",
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s.cfg.Env.Name())
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s.log.Infof("Send active " +
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"predicate")
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err := sendAndCleanUp()
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if err != nil {
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//nolint:ll
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log.Errorf("FSM(%v): unable to send message: %v", err)
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s.log.Errorf("Unable to send message: %v", err)
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}
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return
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@ -435,8 +433,8 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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// If this is a broadcast transaction event, then we'll broadcast with
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// the label attached.
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case *BroadcastTxn:
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log.Debugf("FSM(%v): broadcasting txn, txid=%v",
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s.cfg.Env.Name(), daemonEvent.Tx.TxHash())
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s.log.Debugf("Broadcasting txn, txid=%v",
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daemonEvent.Tx.TxHash())
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err := s.cfg.Daemon.BroadcastTransaction(
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daemonEvent.Tx, daemonEvent.Label,
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@ -450,8 +448,7 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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// The state machine has requested a new event to be sent once a
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// transaction spending a specified outpoint has confirmed.
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case *RegisterSpend[Event]:
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log.Debugf("FSM(%v): registering spend: %v", s.cfg.Env.Name(),
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daemonEvent.OutPoint)
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s.log.Debugf("Registering spend: %v", daemonEvent.OutPoint)
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spendEvent, err := s.cfg.Daemon.RegisterSpendNtfn(
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&daemonEvent.OutPoint, daemonEvent.PkScript,
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@ -495,8 +492,7 @@ func (s *StateMachine[Event, Env]) executeDaemonEvent(ctx context.Context,
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// The state machine has requested a new event to be sent once a
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// specified txid+pkScript pair has confirmed.
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case *RegisterConf[Event]:
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log.Debugf("FSM(%v): registering conf: %v", s.cfg.Env.Name(),
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daemonEvent.Txid)
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s.log.Debugf("Registering conf: %v", daemonEvent.Txid)
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numConfs := daemonEvent.NumConfs.UnwrapOr(1)
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confEvent, err := s.cfg.Daemon.RegisterConfirmationsNtfn(
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@ -547,9 +543,9 @@ func (s *StateMachine[Event, Env]) applyEvents(ctx context.Context,
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currentState State[Event, Env], newEvent Event) (State[Event, Env],
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error) {
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log.Debugf("FSM(%v): applying new event", s.cfg.Env.Name(),
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lnutils.SpewLogClosure(newEvent),
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)
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s.log.Debugf("Applying new event: %v",
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lnutils.SpewLogClosure(newEvent))
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eventQueue := fn.NewQueue(newEvent)
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// Given the next event to handle, we'll process the event, then add
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@ -560,10 +556,8 @@ func (s *StateMachine[Event, Env]) applyEvents(ctx context.Context,
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//nolint:ll
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for nextEvent := eventQueue.Dequeue(); nextEvent.IsSome(); nextEvent = eventQueue.Dequeue() {
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err := fn.MapOptionZ(nextEvent, func(event Event) error {
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log.Debugf("FSM(%v): processing event: %v",
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s.cfg.Env.Name(),
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lnutils.SpewLogClosure(event),
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)
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s.log.Debugf("Processing event: %v",
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lnutils.SpewLogClosure(event))
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// Apply the state transition function of the current
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// state given this new event and our existing env.
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@ -593,14 +587,12 @@ func (s *StateMachine[Event, Env]) applyEvents(ctx context.Context,
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//
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//nolint:ll
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for _, inEvent := range events.InternalEvent {
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log.Debugf("FSM(%v): adding "+
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s.log.Debugf("Adding "+
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"new internal event "+
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"to queue: %v",
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s.cfg.Env.Name(),
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lnutils.SpewLogClosure(
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inEvent,
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),
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)
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))
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eventQueue.Enqueue(inEvent)
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}
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@ -611,9 +603,8 @@ func (s *StateMachine[Event, Env]) applyEvents(ctx context.Context,
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return err
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}
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log.Infof("FSM(%v): state transition: from_state=%T, "+
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"to_state=%T",
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s.cfg.Env.Name(), currentState,
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s.log.Infof("State transition: from_state=%T, "+
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"to_state=%T", currentState,
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transition.NextState)
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// With our events processed, we'll now update our
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@ -640,7 +631,7 @@ func (s *StateMachine[Event, Env]) applyEvents(ctx context.Context,
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// incoming events, and then drives the state machine forward until it reaches
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// a terminal state.
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func (s *StateMachine[Event, Env]) driveMachine(ctx context.Context) {
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log.Debugf("FSM(%v): starting state machine", s.cfg.Env.Name())
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s.log.Debugf("Starting state machine")
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currentState := s.cfg.InitialState
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@ -650,7 +641,7 @@ func (s *StateMachine[Event, Env]) driveMachine(ctx context.Context) {
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return s.executeDaemonEvent(ctx, event)
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})
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if err != nil {
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log.Errorf("unable to execute init event: %w", err)
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s.log.Errorf("Unable to execute init event: %v", err)
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return
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}
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@ -670,7 +661,7 @@ func (s *StateMachine[Event, Env]) driveMachine(ctx context.Context) {
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if err != nil {
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s.cfg.ErrorReporter.ReportError(err)
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log.Errorf("unable to apply event: %v", err)
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s.log.Errorf("Unable to apply event: %v", err)
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// An error occurred, so we'll tear down the
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// entire state machine as we can't proceed.
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