2017-07-23 12:24:45 +00:00
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// Copyright 2017, Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package blog implements a private logger, in the manner of glog, without
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2017-09-13 12:09:48 +00:00
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// polluting the flag namespace or leaving files all over /tmp.
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2017-07-23 12:24:45 +00:00
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//
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// It has almost no features, and a bunch of global state.
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package blog
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import (
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"log"
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"os"
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"strconv"
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)
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var level int32
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type Verbose bool
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func init() {
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lvl := os.Getenv("B2_LOG_LEVEL")
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i, err := strconv.ParseInt(lvl, 10, 32)
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if err != nil {
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return
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}
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level = int32(i)
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}
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func (v Verbose) Info(a ...interface{}) {
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if v {
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log.Print(a...)
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}
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}
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func (v Verbose) Infof(format string, a ...interface{}) {
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if v {
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log.Printf(format, a...)
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}
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}
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func V(target int32) Verbose {
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return Verbose(target <= level)
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}
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