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// Copyright 2017 Drone.IO Inc. 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 logger
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// A Logger represents an active logging object that generates
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// lines of output to an io.Writer.
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type Logger interface {
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Debug(args ...interface{})
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Debugf(format string, args ...interface{})
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Debugln(args ...interface{})
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Error(args ...interface{})
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Errorf(format string, args ...interface{})
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Errorln(args ...interface{})
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Info(args ...interface{})
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Infof(format string, args ...interface{})
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Infoln(args ...interface{})
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Warn(args ...interface{})
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Warnf(format string, args ...interface{})
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Warnln(args ...interface{})
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}
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// Discard returns a no-op logger.
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func Discard() Logger {
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return &discard{}
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}
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type discard struct{}
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func (*discard) Debug(args ...interface{}) {}
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func (*discard) Debugf(format string, args ...interface{}) {}
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func (*discard) Debugln(args ...interface{}) {}
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func (*discard) Error(args ...interface{}) {}
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func (*discard) Errorf(format string, args ...interface{}) {}
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func (*discard) Errorln(args ...interface{}) {}
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func (*discard) Info(args ...interface{}) {}
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func (*discard) Infof(format string, args ...interface{}) {}
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func (*discard) Infoln(args ...interface{}) {}
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func (*discard) Warn(args ...interface{}) {}
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func (*discard) Warnf(format string, args ...interface{}) {}
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func (*discard) Warnln(args ...interface{}) {}
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