Commit cccb4b47c00c510cb8071d3619b343b8fdeb9527
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df74f4a7ee
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log http response
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27 additions
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13 deletions
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main.go
| 1 | package gologger | 1 | package gologger |
| 2 | 2 | ||
| 3 | import ( | 3 | import ( |
| 4 | "fmt" | 4 | "fmt" |
| 5 | "io/ioutil" | ||
| 6 | "net/http" | 5 | "net/http" |
| 6 | "net/http/httputil" | ||
| 7 | "os" | 7 | "os" |
| 8 | "path/filepath" | 8 | "path/filepath" |
| 9 | "runtime" | 9 | "runtime" |
| 10 | "strings" | 10 | "strings" |
| 11 | "sync" | 11 | "sync" |
| 12 | "time" | 12 | "time" |
| 13 | ) | 13 | ) |
| 14 | 14 | ||
| 15 | const ( | 15 | const ( |
| 16 | MaxLogSize5MB int64 = 5 * 1024 * 1024 | 16 | MaxLogSize5MB int64 = 5 * 1024 * 1024 |
| 17 | MaxLogSize1MB int64 = 1 * 1024 * 1024 | 17 | MaxLogSize1MB int64 = 1 * 1024 * 1024 |
| 18 | MaxLogSize500KB int64 = 500 * 1024 | 18 | MaxLogSize500KB int64 = 500 * 1024 |
| 19 | MaxLogSize100KB int64 = 100 * 1024 | 19 | MaxLogSize100KB int64 = 100 * 1024 |
| 20 | MaxLogSize512B int64 = 512 | 20 | MaxLogSize512B int64 = 512 |
| 21 | logDirName = "log" | 21 | logDirName = "log" |
| 22 | ) | 22 | ) |
| 23 | 23 | ||
| 24 | type Logger struct { | 24 | type Logger struct { |
| 25 | mu *sync.Mutex | 25 | mu *sync.Mutex |
| 26 | outputFile *os.File | 26 | outputFile *os.File |
| 27 | 27 | ||
| 28 | outputFileName string | 28 | outputFileName string |
| 29 | maxFileSize int64 | 29 | maxFileSize int64 |
| 30 | 30 | ||
| 31 | splitCount int | 31 | splitCount int |
| 32 | } | 32 | } |
| 33 | 33 | ||
| 34 | func New(name string, maxFileSize int64) (logger *Logger, err error) { | 34 | func New(name string, maxFileSize int64) (logger *Logger, err error) { |
| 35 | logger = &Logger{} | 35 | logger = &Logger{} |
| 36 | 36 | ||
| 37 | logger.outputFileName = name + "-log" | 37 | logger.outputFileName = name + "-log" |
| 38 | logger.mu = &sync.Mutex{} | 38 | logger.mu = &sync.Mutex{} |
| 39 | logger.maxFileSize = maxFileSize | 39 | logger.maxFileSize = maxFileSize |
| 40 | 40 | ||
| 41 | err = os.Mkdir(logDirName, os.ModePerm) | 41 | err = os.Mkdir(logDirName, os.ModePerm) |
| 42 | if err != nil { | 42 | if err != nil { |
| 43 | if !os.IsExist(err) { | 43 | if !os.IsExist(err) { |
| 44 | fmt.Printf("logger: mkdir: couldn't create event log directory\n") | 44 | fmt.Printf("logger: mkdir: couldn't create event log directory\n") |
| 45 | return nil, err | 45 | return nil, err |
| 46 | } | 46 | } |
| 47 | } | 47 | } |
| 48 | 48 | ||
| 49 | date := strings.Replace(time.Now().Format(time.RFC3339), ":", ".", -1) | 49 | date := strings.Replace(time.Now().Format(time.RFC3339), ":", ".", -1) |
| 50 | logger.outputFileName += "_" + date + ".txt" | 50 | logger.outputFileName += "_" + date + ".txt" |
| 51 | path := filepath.Join(logDirName, logger.outputFileName) | 51 | path := filepath.Join(logDirName, logger.outputFileName) |
| 52 | logger.outputFile, err = os.Create(path) | 52 | logger.outputFile, err = os.Create(path) |
| 53 | if err != nil { | 53 | if err != nil { |
| 54 | fmt.Printf("logger: new: couldn't create event log file\n") | 54 | fmt.Printf("logger: new: couldn't create event log file\n") |
| 55 | return nil, err | 55 | return nil, err |
| 56 | } | 56 | } |
| 57 | 57 | ||
| 58 | return logger, nil | 58 | return logger, nil |
| 59 | } | 59 | } |
| 60 | 60 | ||
| 61 | func (l *Logger) Print(format string, v ...interface{}) { | 61 | func (l *Logger) Print(format string, v ...interface{}) { |
| 62 | msg := fmt.Sprintf(format, v...) | 62 | msg := fmt.Sprintf(format, v...) |
| 63 | fmt.Printf(time.Now().Format(time.RFC3339) + ": " + msg + "\n") | 63 | fmt.Printf(time.Now().Format(time.RFC3339) + ": " + msg + "\n") |
| 64 | } | 64 | } |
| 65 | 65 | ||
| 66 | func (l *Logger) Log(format string, v ...interface{}) { | 66 | func (l *Logger) Log(format string, v ...interface{}) { |
| 67 | if l.outputFile != nil { | 67 | if l.outputFile != nil { |
| 68 | l.mu.Lock() | 68 | l.mu.Lock() |
| 69 | defer l.mu.Unlock() | 69 | defer l.mu.Unlock() |
| 70 | 70 | ||
| 71 | msg := fmt.Sprintf(format, v...) | 71 | msg := fmt.Sprintf(format, v...) |
| 72 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" | 72 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" |
| 73 | if l.shouldSplit(len(s)) { | 73 | if l.shouldSplit(len(s)) { |
| 74 | l.split() | 74 | l.split() |
| 75 | } | 75 | } |
| 76 | l.outputFile.WriteString(s) | 76 | l.outputFile.WriteString(s) |
| 77 | } | 77 | } |
| 78 | } | 78 | } |
| 79 | 79 | ||
| 80 | func (l *Logger) LogRequest(req *http.Request, userid string) { | 80 | func (l *Logger) LogRequest(req *http.Request, userid string) { |
| 81 | if l.outputFile != nil { | 81 | if l.outputFile != nil { |
| 82 | if userid == "" { | 82 | if userid == "" { |
| 83 | userid = "-" | 83 | userid = "-" |
| 84 | } | 84 | } |
| 85 | 85 | ||
| 86 | var b strings.Builder | 86 | var b strings.Builder |
| 87 | b.WriteString("Request:\n") | ||
| 87 | // CLF-like header | 88 | // CLF-like header |
| 88 | ts := time.Now().Format(time.RFC3339) | 89 | ts := time.Now().Format(time.RFC3339) |
| 89 | fmt.Fprintf(&b, "%s - %s [%s] \"%s %s\" %s\n", req.RemoteAddr, userid, ts, req.Method, req.URL.Path, req.Proto) | 90 | fmt.Fprintf(&b, "%s %s\n", req.RemoteAddr, ts) |
| 90 | 91 | ||
| 91 | b.WriteString("\nURL encoded:\n") | 92 | body, err := httputil.DumpRequest(req, true) |
| 92 | for k, v := range req.Form { | 93 | if err != nil { |
| 93 | fmt.Fprintf(&b, "%s = %s\n", k, v) | ||
| 94 | } | ||
| 95 | |||
| 96 | b.WriteString("\nBody:\n") | ||
| 97 | buf, err := ioutil.ReadAll(req.Body) | ||
| 98 | if err == nil { | ||
| 99 | b.WriteString(string(buf)) | ||
| 100 | } else { | ||
| 101 | fmt.Fprintf(os.Stderr, "%v\n", err) | 94 | fmt.Fprintf(os.Stderr, "%v\n", err) |
| 95 | } else { | ||
| 96 | b.WriteString(string(body)) | ||
| 102 | } | 97 | } |
| 103 | b.WriteString("\n\n") | 98 | b.WriteString("\n\n") |
| 104 | 99 | ||
| 105 | msg := b.String() | 100 | msg := b.String() |
| 106 | //fmt.Println(msg) | 101 | |
| 102 | l.mu.Lock() | ||
| 103 | defer l.mu.Unlock() | ||
| 104 | |||
| 105 | if l.shouldSplit(len(msg)) { | ||
| 106 | l.split() | ||
| 107 | } | ||
| 108 | l.outputFile.WriteString(msg) | ||
| 109 | } | ||
| 110 | } | ||
| 111 | |||
| 112 | func (l *Logger) LogResponse(w http.ResponseWriter, duration time.Duration) { | ||
| 113 | if l.outputFile != nil { | ||
| 114 | var b strings.Builder | ||
| 115 | b.WriteString("Response:\n") | ||
| 116 | for k, v := range w.Header() { | ||
| 117 | b.WriteString(fmt.Sprintf("%s: %s\n", k, v)) | ||
| 118 | } | ||
| 119 | b.WriteString(fmt.Sprintf("\nCompleted in: %v\n", duration)) | ||
| 120 | msg := b.String() | ||
| 107 | 121 | ||
| 108 | l.mu.Lock() | 122 | l.mu.Lock() |
| 109 | defer l.mu.Unlock() | 123 | defer l.mu.Unlock() |
| 110 | 124 | ||
| 111 | if l.shouldSplit(len(msg)) { | 125 | if l.shouldSplit(len(msg)) { |
| 112 | l.split() | 126 | l.split() |
| 113 | } | 127 | } |
| 114 | l.outputFile.WriteString(msg) | 128 | l.outputFile.WriteString(msg) |
| 115 | } | 129 | } |
| 116 | } | 130 | } |
| 117 | 131 | ||
| 118 | func (l *Logger) Trace(format string, v ...interface{}) { | 132 | func (l *Logger) Trace(format string, v ...interface{}) { |
| 119 | if l.outputFile != nil { | 133 | if l.outputFile != nil { |
| 120 | l.mu.Lock() | 134 | l.mu.Lock() |
| 121 | defer l.mu.Unlock() | 135 | defer l.mu.Unlock() |
| 122 | _, file, line, ok := runtime.Caller(1) | 136 | _, file, line, ok := runtime.Caller(1) |
| 123 | 137 | ||
| 124 | s := "" | 138 | s := "" |
| 125 | msg := fmt.Sprintf(format, v...) | 139 | msg := fmt.Sprintf(format, v...) |
| 126 | if ok { | 140 | if ok { |
| 127 | s = fmt.Sprintf("%s: %s %d: %s\n", time.Now().Format(time.RFC3339), file, line, msg) | 141 | s = fmt.Sprintf("%s: %s %d: %s\n", time.Now().Format(time.RFC3339), file, line, msg) |
| 128 | } else { | 142 | } else { |
| 129 | s = fmt.Sprintf(time.Now().Format(time.RFC3339) + ": [can't retreive stack details]:" + msg + "\n") | 143 | s = fmt.Sprintf(time.Now().Format(time.RFC3339) + ": [can't retreive stack details]:" + msg + "\n") |
| 130 | } | 144 | } |
| 131 | if l.shouldSplit(len(s)) { | 145 | if l.shouldSplit(len(s)) { |
| 132 | l.split() | 146 | l.split() |
| 133 | } | 147 | } |
| 134 | l.outputFile.WriteString(s) | 148 | l.outputFile.WriteString(s) |
| 135 | } | 149 | } |
| 136 | } | 150 | } |
| 137 | 151 | ||
| 138 | func (l *Logger) Close() { | 152 | func (l *Logger) Close() { |
| 139 | if l.outputFile != nil { | 153 | if l.outputFile != nil { |
| 140 | err := l.outputFile.Close() | 154 | err := l.outputFile.Close() |
| 141 | if err != nil { | 155 | if err != nil { |
| 142 | fmt.Printf("logger: on exit: couldn't close event log file\n") | 156 | fmt.Printf("logger: on exit: couldn't close event log file\n") |
| 143 | } | 157 | } |
| 144 | } | 158 | } |
| 145 | } | 159 | } |
| 146 | 160 | ||
| 147 | func (l *Logger) split() { | 161 | func (l *Logger) split() { |
| 148 | // close old file | 162 | // close old file |
| 149 | err := l.outputFile.Close() | 163 | err := l.outputFile.Close() |
| 150 | if err != nil { | 164 | if err != nil { |
| 151 | fmt.Printf("logger: split: couldn't close event file\n") | 165 | fmt.Printf("logger: split: couldn't close event file\n") |
| 152 | return | 166 | return |
| 153 | } | 167 | } |
| 154 | 168 | ||
| 155 | l.splitCount++ | 169 | l.splitCount++ |
| 156 | // open new file | 170 | // open new file |
| 157 | var errnew error | 171 | var errnew error |
| 158 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)) | 172 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)) |
| 159 | l.outputFile, errnew = os.Create(path) | 173 | l.outputFile, errnew = os.Create(path) |
| 160 | 174 | ||
| 161 | if errnew != nil { | 175 | if errnew != nil { |