mirror of https://github.com/lightninglabs/loop
loopdb: enable logging
Previous code in log.go assumed there would by sub system level enable/disable for loop. This is not yet in place, so converting to same style as used in the lndclient package.pull/55/head
parent
1b306ad425
commit
7d6ed06d5c
@ -1,44 +1,21 @@
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package loopdb
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import (
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"os"
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"github.com/btcsuite/btclog"
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)
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// log is a logger that is initialized with no output filters. This means
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// the package will not perform any logging by default until the caller
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// requests 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
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// by 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.
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// This should be used in preference to SetLogWriter if the caller is also
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// using 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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var (
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backendLog = btclog.NewBackend(logWriter{})
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log = backendLog.Logger("STORE")
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)
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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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// logWriter implements an io.Writer that outputs to both standard output and
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// the write-end pipe of an initialized log rotator.
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type logWriter struct{}
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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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func (logWriter) Write(p []byte) (n int, err error) {
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os.Stdout.Write(p)
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return len(p), nil
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}
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