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// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package logs exposes the loggers used by this library.
package logs
import (
"io"
"log"
)
var (
// Warn is used to log non-fatal errors.
Warn = log.New(io.Discard, "", log.LstdFlags)
// Progress is used to log notable, successful events.
Progress = log.New(io.Discard, "", log.LstdFlags)
// Debug is used to log information that is useful for debugging.
Debug = log.New(io.Discard, "", log.LstdFlags)
)
// Enabled checks to see if the logger's writer is set to something other
// than io.Discard. This allows callers to avoid expensive operations
// that will end up in /dev/null anyway.
func Enabled(l *log.Logger) bool {
return l.Writer() != io.Discard
}
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