|
1 | | -package main |
2 | | - |
3 | | -import ( |
4 | | - "errors" |
5 | | - "fmt" |
6 | | - //"github.com/emicklei/hopwatch" |
7 | | - "bufio" |
8 | | - "bytes" |
9 | | - "io" |
10 | | - "log" |
11 | | - "os" |
12 | | - "runtime" |
13 | | - "strings" |
14 | | - "sync" |
15 | | - "time" |
16 | | -) |
17 | | - |
18 | | -var ( |
19 | | - logger *log.Logger |
20 | | - logfile *os.File |
21 | | - accumulatewriter = bytes.NewBufferString("") |
22 | | - accumulatelock sync.Mutex |
23 | | -) |
24 | | - |
25 | | -func initLog() { |
26 | | - logger = log.New(accumulatewriter, "angel> ", log.Ldate|log.Ltime) |
27 | | - go consumeLog() |
28 | | -} |
29 | | - |
30 | | -func consumeLog() { |
31 | | - // only one consumer |
32 | | - for { |
33 | | - accumulatelock.Lock() |
34 | | - if accumulatewriter.Len() <= 0 { |
35 | | - accumulatelock.Unlock() |
36 | | - time.Sleep(500 * time.Millisecond) |
37 | | - continue |
38 | | - } |
39 | | - |
40 | | - s, _ := accumulatewriter.ReadString('\n') |
41 | | - s = strings.TrimSpace(s) |
42 | | - println(s) |
43 | | - logfile.WriteString(s) |
44 | | - logfile.WriteString("\n") |
45 | | - accumulatelock.Unlock() |
46 | | - } |
47 | | -} |
48 | | - |
49 | | -func initLogWriter() { |
50 | | - defer accumulatelock.Unlock() |
51 | | - accumulatelock.Lock() |
52 | | - filename := time.Now().Format("logs/log-20060201-150405.txt") |
53 | | - if logfile != nil { |
54 | | - logfile.Close() // do not care about error |
55 | | - } |
56 | | - var err error |
57 | | - logfile, err = os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666) |
58 | | - if err != nil { |
59 | | - println("logfile creation error: ", err) |
60 | | - } |
61 | | -} |
62 | | - |
63 | | -func accumulateLog(r io.Reader) { |
64 | | - // multiple |
65 | | - br := bufio.NewReader(r) |
66 | | - for { |
67 | | - l, err := br.ReadString('\n') |
68 | | - if err != nil { |
69 | | - return |
70 | | - } |
71 | | - l = strings.TrimSpace(l) |
72 | | - |
73 | | - accumulatelock.Lock() |
74 | | - _, err = accumulatewriter.WriteString(l) |
75 | | - _, err = accumulatewriter.WriteString("\n") |
76 | | - accumulatelock.Unlock() |
77 | | - |
78 | | - if err != nil { |
79 | | - return |
80 | | - } |
81 | | - } |
82 | | -} |
83 | | - |
84 | | -// source https://groups.google.com/forum/?fromgroups#!topic/golang-nuts/C24fRw8HDmI |
85 | | -// from David Wright |
86 | | -type ErrorTrace struct { |
87 | | - err error |
88 | | - trace string |
89 | | -} |
90 | | - |
91 | | -func NewErrorTrace(v ...interface{}) error { |
92 | | - msg := fmt.Sprint(v...) |
93 | | - pc, file, line, ok := runtime.Caller(2) |
94 | | - if ok { |
95 | | - fun := runtime.FuncForPC(pc) |
96 | | - loc := fmt.Sprint(fun.Name(), "\n\t", file, ":", line) |
97 | | - return ErrorTrace{err: errors.New(msg), trace: loc} |
98 | | - } |
99 | | - return errors.New("error generating error") |
100 | | -} |
101 | | - |
102 | | -func (et ErrorTrace) Error() string { |
103 | | - return et.err.Error() + "\n " + et.trace |
104 | | -} |
105 | | - |
106 | | -func B(v ...interface{}) { |
107 | | - ts := time.Now().Format("2006-02-01 15:04:05: ") |
108 | | - println(ts, NewErrorTrace(v...).Error()) |
109 | | -} |
110 | | - |
111 | | -func D(v ...interface{}) { |
112 | | - if debuggingenabled { |
113 | | - logger.Println(v...) |
114 | | - } |
115 | | -} |
116 | | - |
117 | | -func DP(v ...interface{}) { |
118 | | - if debuggingenabled { |
119 | | - logger.Print(v...) |
120 | | - } |
121 | | -} |
122 | | - |
123 | | -func P(v ...interface{}) { |
124 | | - logger.Println(v...) |
125 | | -} |
126 | | - |
127 | | -func F(v ...interface{}) { |
128 | | - logger.Fatalln(v...) |
129 | | -} |
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "fmt" |
| 6 | + //"github.com/emicklei/hopwatch" |
| 7 | + "bufio" |
| 8 | + "bytes" |
| 9 | + "io" |
| 10 | + "log" |
| 11 | + "os" |
| 12 | + "runtime" |
| 13 | + "strings" |
| 14 | + "sync" |
| 15 | + "time" |
| 16 | +) |
| 17 | + |
| 18 | +var ( |
| 19 | + logger *log.Logger |
| 20 | + logfile *os.File |
| 21 | + accumulatewriter = bytes.NewBufferString("") |
| 22 | + accumulatelock sync.Mutex |
| 23 | +) |
| 24 | + |
| 25 | +func initLog() { |
| 26 | + logger = log.New(accumulatewriter, "angel> ", log.Ldate|log.Ltime) |
| 27 | + go consumeLog() |
| 28 | +} |
| 29 | + |
| 30 | +func consumeLog() { |
| 31 | + // only one consumer |
| 32 | + for { |
| 33 | + accumulatelock.Lock() |
| 34 | + if accumulatewriter.Len() <= 0 { |
| 35 | + accumulatelock.Unlock() |
| 36 | + time.Sleep(500 * time.Millisecond) |
| 37 | + continue |
| 38 | + } |
| 39 | + |
| 40 | + s, _ := accumulatewriter.ReadString('\n') |
| 41 | + s = strings.TrimSpace(s) |
| 42 | + println(s) |
| 43 | + logfile.WriteString(s) |
| 44 | + logfile.WriteString("\n") |
| 45 | + accumulatelock.Unlock() |
| 46 | + } |
| 47 | +} |
| 48 | + |
| 49 | +func initLogWriter() { |
| 50 | + defer accumulatelock.Unlock() |
| 51 | + accumulatelock.Lock() |
| 52 | + filename := time.Now().Format("logs/log-20060201-150405.txt") |
| 53 | + if logfile != nil { |
| 54 | + logfile.Close() // do not care about error |
| 55 | + } |
| 56 | + var err error |
| 57 | + logfile, err = os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666) |
| 58 | + if err != nil { |
| 59 | + println("logfile creation error: ", err) |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +func accumulateLog(r io.Reader) { |
| 64 | + // multiple |
| 65 | + br := bufio.NewReader(r) |
| 66 | + for { |
| 67 | + l, err := br.ReadString('\n') |
| 68 | + if err != nil { |
| 69 | + return |
| 70 | + } |
| 71 | + l = strings.TrimSpace(l) |
| 72 | + |
| 73 | + accumulatelock.Lock() |
| 74 | + _, err = accumulatewriter.WriteString(l) |
| 75 | + _, err = accumulatewriter.WriteString("\n") |
| 76 | + accumulatelock.Unlock() |
| 77 | + |
| 78 | + if err != nil { |
| 79 | + return |
| 80 | + } |
| 81 | + } |
| 82 | +} |
| 83 | + |
| 84 | +// source https://groups.google.com/forum/?fromgroups#!topic/golang-nuts/C24fRw8HDmI |
| 85 | +// from David Wright |
| 86 | +type ErrorTrace struct { |
| 87 | + err error |
| 88 | + trace string |
| 89 | +} |
| 90 | + |
| 91 | +func NewErrorTrace(v ...interface{}) error { |
| 92 | + msg := fmt.Sprint(v...) |
| 93 | + pc, file, line, ok := runtime.Caller(2) |
| 94 | + if ok { |
| 95 | + fun := runtime.FuncForPC(pc) |
| 96 | + loc := fmt.Sprint(fun.Name(), "\n\t", file, ":", line) |
| 97 | + return ErrorTrace{err: errors.New(msg), trace: loc} |
| 98 | + } |
| 99 | + return errors.New("error generating error") |
| 100 | +} |
| 101 | + |
| 102 | +func (et ErrorTrace) Error() string { |
| 103 | + return et.err.Error() + "\n " + et.trace |
| 104 | +} |
| 105 | + |
| 106 | +func B(v ...interface{}) { |
| 107 | + ts := time.Now().Format("2006-02-01 15:04:05: ") |
| 108 | + println(ts, NewErrorTrace(v...).Error()) |
| 109 | +} |
| 110 | + |
| 111 | +func D(v ...interface{}) { |
| 112 | + if debuggingenabled { |
| 113 | + logger.Println(v...) |
| 114 | + } |
| 115 | +} |
| 116 | + |
| 117 | +func DP(v ...interface{}) { |
| 118 | + if debuggingenabled { |
| 119 | + logger.Print(v...) |
| 120 | + } |
| 121 | +} |
| 122 | + |
| 123 | +func P(v ...interface{}) { |
| 124 | + logger.Println(v...) |
| 125 | +} |
| 126 | + |
| 127 | +func F(v ...interface{}) { |
| 128 | + logger.Fatalln(v...) |
| 129 | +} |
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