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45 lines
1.3 KiB
45 lines
1.3 KiB
package sweep |
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import ( |
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"github.com/btcsuite/btclog" |
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"github.com/lightningnetwork/lnd/build" |
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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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UseLogger(build.NewSubLogger("SWPR", nil)) |
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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 UseLogger is called. |
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func DisableLog() { |
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UseLogger(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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} |
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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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