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- package sweep
- import (
- "github.com/btcsuite/btclog"
- "github.com/lightningnetwork/lnd/build"
- )
- // log is a logger that is initialized with no output filters. This means the
- // package will not perform any logging by default until the caller requests
- // it.
- var log btclog.Logger
- // The default amount of logging is none.
- func init() {
- UseLogger(build.NewSubLogger("SWPR", nil))
- }
- // DisableLog disables all library log output. Logging output is disabled by
- // default until UseLogger is called.
- func DisableLog() {
- UseLogger(btclog.Disabled)
- }
- // UseLogger uses a specified Logger to output package logging info. This
- // should be used in preference to SetLogWriter if the caller is also using
- // btclog.
- func UseLogger(logger btclog.Logger) {
- log = logger
- }
- // logClosure is used to provide a closure over expensive logging operations so
- // don't have to be performed when the logging level doesn't warrant it.
- type logClosure func() string
- // String invokes the underlying function and returns the result.
- func (c logClosure) String() string {
- return c()
- }
- // newLogClosure returns a new closure over a function that returns a string
- // which itself provides a Stringer interface so that it can be used with the
- // logging system.
- func newLogClosure(c func() string) logClosure {
- return logClosure(c)
- }
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