gitlab.com/aquachain/aquachain@v1.17.16-rc3.0.20221018032414-e3ddf1e1c055/common/log/root.go (about)

     1  // Copyright 2018 The aquachain Authors
     2  // This file is part of the aquachain library.
     3  //
     4  // The aquachain library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The aquachain library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the aquachain library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package log
    18  
    19  import (
    20  	"os"
    21  )
    22  
    23  var (
    24  	root          = &logger{[]interface{}{}, new(swapHandler)}
    25  	StdoutHandler = StreamHandler(os.Stdout, LogfmtFormat())
    26  	StderrHandler = StreamHandler(os.Stderr, LogfmtFormat())
    27  )
    28  
    29  func init() {
    30  	root.SetHandler(DiscardHandler())
    31  }
    32  
    33  // New returns a new logger with the given context.
    34  // New is a convenient alias for Root().New
    35  func New(ctx ...interface{}) Logger {
    36  	return root.New(ctx...)
    37  }
    38  
    39  // Root returns the root logger
    40  func Root() Logger {
    41  	return root
    42  }
    43  
    44  // The following functions bypass the exported logger methods (logger.Debug,
    45  // etc.) to keep the call depth the same for all paths to logger.write so
    46  // runtime.Caller(2) always refers to the call site in client code.
    47  
    48  // Trace is a convenient alias for Root().Trace
    49  func Trace(msg string, ctx ...interface{}) {
    50  	root.write(msg, LvlTrace, ctx)
    51  }
    52  
    53  // Debug is a convenient alias for Root().Debug
    54  func Debug(msg string, ctx ...interface{}) {
    55  	root.write(msg, LvlDebug, ctx)
    56  }
    57  
    58  // Info is a convenient alias for Root().Info
    59  func Info(msg string, ctx ...interface{}) {
    60  	root.write(msg, LvlInfo, ctx)
    61  }
    62  
    63  // Warn is a convenient alias for Root().Warn
    64  func Warn(msg string, ctx ...interface{}) {
    65  	root.write(msg, LvlWarn, ctx)
    66  }
    67  
    68  // Error is a convenient alias for Root().Error
    69  func Error(msg string, ctx ...interface{}) {
    70  	root.write(msg, LvlError, ctx)
    71  }
    72  
    73  // Crit is a convenient alias for Root().Crit
    74  func Crit(msg string, ctx ...interface{}) {
    75  	root.write(msg, LvlCrit, ctx)
    76  	os.Exit(1)
    77  }