mirror of https://github.com/containers/podman.git
31 lines
915 B
Go
31 lines
915 B
Go
// Copyright 2019 the u-root Authors. All rights reserved
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package ulog exposes logging via a Go interface.
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//
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// ulog has three implementations of the Logger interface: a Go standard
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// library "log" package Logger and a test Logger that logs via a test's
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// testing.TB.Logf. To use the test logger import "ulog/ulogtest".
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package ulog
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import "log"
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// Logger is a log receptacle.
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//
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// It puts your information somewhere for safekeeping.
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type Logger interface {
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Printf(format string, v ...interface{})
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}
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// Log is a Logger that prints to the log package's default logger.
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var Log Logger = log.Default()
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type emptyLogger struct{}
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// Printf implements Logger.Printf.
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func (emptyLogger) Printf(format string, v ...interface{}) {}
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// Null is a logger that prints nothing.
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var Null Logger = emptyLogger{}
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