log.go

Documentation: golang.org/x/sys/windows/svc/debug

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build windows
     6  
     7  package debug
     8  
     9  import (
    10  	"os"
    11  	"strconv"
    12  )
    13  
    14  // Log interface allows different log implementations to be used.
    15  type Log interface {
    16  	Close() error
    17  	Info(eid uint32, msg string) error
    18  	Warning(eid uint32, msg string) error
    19  	Error(eid uint32, msg string) error
    20  }
    21  
    22  // ConsoleLog provides access to the console.
    23  type ConsoleLog struct {
    24  	Name string
    25  }
    26  
    27  // New creates new ConsoleLog.
    28  func New(source string) *ConsoleLog {
    29  	return &ConsoleLog{Name: source}
    30  }
    31  
    32  // Close closes console log l.
    33  func (l *ConsoleLog) Close() error {
    34  	return nil
    35  }
    36  
    37  func (l *ConsoleLog) report(kind string, eid uint32, msg string) error {
    38  	s := l.Name + "." + kind + "(" + strconv.Itoa(int(eid)) + "): " + msg + "\n"
    39  	_, err := os.Stdout.Write([]byte(s))
    40  	return err
    41  }
    42  
    43  // Info writes an information event msg with event id eid to the console l.
    44  func (l *ConsoleLog) Info(eid uint32, msg string) error {
    45  	return l.report("info", eid, msg)
    46  }
    47  
    48  // Warning writes an warning event msg with event id eid to the console l.
    49  func (l *ConsoleLog) Warning(eid uint32, msg string) error {
    50  	return l.report("warn", eid, msg)
    51  }
    52  
    53  // Error writes an error event msg with event id eid to the console l.
    54  func (l *ConsoleLog) Error(eid uint32, msg string) error {
    55  	return l.report("error", eid, msg)
    56  }
    57
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