828d28581a
This commit modifies the routing package to no longer use the ChainNotifier for pruning the channel graph. Instead, we now use the FilteredChainView interface to more (from the ChannelRouter’s PoV) efficiently maintain the channel graph. Rather than scanning the _entire_ block manually, we now rely on the FilteredChainView to provide us with FilteredBlocks which include _only_ the relevant transactions that we care about.
73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package routing
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import (
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"errors"
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"io"
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"github.com/btcsuite/btclog"
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"github.com/lightningnetwork/lnd/routing/chainview"
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)
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// log is a logger that is initialized with no output filters. This means the
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// package will not perform any logging by default until the caller requests
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// it.
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var log btclog.Logger
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// The default amount of logging is none.
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func init() {
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DisableLog()
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}
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// DisableLog disables all library log output. Logging output is disabled by
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// default until either UseLogger or SetLogWriter are called.
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func DisableLog() {
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log = btclog.Disabled
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}
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// UseLogger uses a specified Logger to output package logging info. This
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// should be used in preference to SetLogWriter if the caller is also using
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// btclog.
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func UseLogger(logger btclog.Logger) {
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log = logger
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chainview.UseLogger(logger)
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}
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// SetLogWriter uses a specified io.Writer to output package logging info.
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// This allows a caller to direct package logging output without needing a
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// dependency on seelog. If the caller is also using btclog, UseLogger should
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// be used instead.
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func SetLogWriter(w io.Writer, level string) error {
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if w == nil {
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return errors.New("nil writer")
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}
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lvl, ok := btclog.LogLevelFromString(level)
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if !ok {
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return errors.New("invalid log level")
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}
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l, err := btclog.NewLoggerFromWriter(w, lvl)
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if err != nil {
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return err
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}
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UseLogger(l)
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return nil
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}
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// logClosure is used to provide a closure over expensive logging operations so
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// don't have to be performed when the logging level doesn't warrant it.
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type logClosure func() string
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// String invokes the underlying function and returns the result.
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func (c logClosure) String() string {
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return c()
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}
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// newLogClosure returns a new closure over a function that returns a string
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// which itself provides a Stringer interface so that it can be used with the
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// logging system.
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func newLogClosure(c func() string) logClosure {
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return logClosure(c)
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}
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