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Merge pull request #2355 from joostjager/move-invoices
invoices: create package
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Original file line number | Diff line number | Diff line change |
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package invoices | ||
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import ( | ||
"github.com/btcsuite/btclog" | ||
"github.com/lightningnetwork/lnd/build" | ||
) | ||
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// 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 | ||
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// The default amount of logging is none. | ||
func init() { | ||
UseLogger(build.NewSubLogger("INVC", nil)) | ||
} | ||
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// DisableLog disables all library log output. Logging output is disabled | ||
// by default until UseLogger is called. | ||
func DisableLog() { | ||
UseLogger(btclog.Disabled) | ||
} | ||
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// 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 | ||
} | ||
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// 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 | ||
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// String invokes the underlying function and returns the result. | ||
func (c logClosure) String() string { | ||
return c() | ||
} | ||
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// 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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