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chainntnfs+chainreg: add interface MempoolWatcher

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This commit adds the interface `MempoolWatcher` and uses it in the chain
registry.
This commit is contained in:
yyforyongyu 2023-04-03 21:21:07 +08:00
parent ad5e798392
commit e81d62fc70
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GPG Key ID: 9BCD95C4FF296868
4 changed files with 34 additions and 2 deletions
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4
chainntnfs/bitcoindnotify/bitcoind.go
View File

@ -80,6 +80,10 @@ type BitcoindNotifier struct {
// time.
var _ chainntnfs.ChainNotifier = (*BitcoindNotifier)(nil)
// Ensure BitcoindNotifier implements the MempoolWatcher interface at compile
// time.
var _ chainntnfs.MempoolWatcher = (*BitcoindNotifier)(nil)
// New returns a new BitcoindNotifier instance. This function assumes the
// bitcoind node detailed in the passed configuration is already running, and
// willing to accept RPC requests and new zmq clients.

3
chainntnfs/btcdnotify/btcd.go
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@ -96,6 +96,9 @@ type BtcdNotifier struct {
// Ensure BtcdNotifier implements the ChainNotifier interface at compile time.
var _ chainntnfs.ChainNotifier = (*BtcdNotifier)(nil)
// Ensure BtcdNotifier implements the MempoolWatcher interface at compile time.
var _ chainntnfs.MempoolWatcher = (*BtcdNotifier)(nil)
// New returns a new BtcdNotifier instance. This function assumes the btcd node
// detailed in the passed configuration is already running, and willing to
// accept new websockets clients.

13
chainntnfs/interface.go
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@ -808,3 +808,16 @@ type ConfirmHintCache interface {
// the cache.
PurgeConfirmHint(confRequests ...ConfRequest) error
}
// MempoolWatcher defines an interface that allows the caller to query
// information in the mempool.
type MempoolWatcher interface {
// SubscribeMempoolSpent allows the caller to register a subscription
// to watch for a spend of an outpoint in the mempool.The event will be
// dispatched once the outpoint is spent in the mempool.
SubscribeMempoolSpent(op wire.OutPoint) (*MempoolSpendEvent, error)
// CancelMempoolSpendEvent allows the caller to cancel a subscription to
// watch for a spend of an outpoint in the mempool.
CancelMempoolSpendEvent(sub *MempoolSpendEvent)
}

16
chainreg/chainregistry.go
View File

@ -182,6 +182,10 @@ type PartialChainControl struct {
// interested in.
ChainNotifier chainntnfs.ChainNotifier
// MempoolNotifier is used to watch for spending events happened in
// mempool.
MempoolNotifier chainntnfs.MempoolWatcher
// ChainView is used in the router for maintaining an up-to-date graph.
ChainView chainview.FilteredChainView
@ -433,10 +437,14 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
"bitcoind: %v", err)
}
cc.ChainNotifier = bitcoindnotify.New(
chainNotifier := bitcoindnotify.New(
bitcoindConn, cfg.ActiveNetParams.Params, hintCache,
hintCache, cfg.BlockCache,
)
cc.ChainNotifier = chainNotifier
cc.MempoolNotifier = chainNotifier
cc.ChainView = chainview.NewBitcoindFilteredChainView(
bitcoindConn, cfg.BlockCache,
)
@ -655,7 +663,8 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
DisableConnectOnNew: true,
DisableAutoReconnect: false,
}
cc.ChainNotifier, err = btcdnotify.New(
chainNotifier, err := btcdnotify.New(
rpcConfig, cfg.ActiveNetParams.Params, hintCache,
hintCache, cfg.BlockCache,
)
@ -663,6 +672,9 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
return nil, nil, err
}
cc.ChainNotifier = chainNotifier
cc.MempoolNotifier = chainNotifier
// Finally, we'll create an instance of the default chain view
// to be used within the routing layer.
cc.ChainView, err = chainview.NewBtcdFilteredChainView(