Commit 093191eb2230cc24d6d609f6307b8681d9baae3a
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1f7fbc601b
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main.go
| 1 | package gologger | 1 | package gologger |
| 2 | 2 | ||
| 3 | import ( | 3 | import ( |
| 4 | "fmt" | 4 | "fmt" |
| 5 | "net/http" | 5 | "net/http" |
| 6 | "net/http/httputil" | 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 | fullName string | 29 | fullName string |
| 30 | maxFileSize int64 | 30 | maxFileSize int64 |
| 31 | 31 | ||
| 32 | splitCount int | 32 | splitCount int |
| 33 | } | 33 | } |
| 34 | 34 | ||
| 35 | func New(name string, maxFileSize int64) (logger *Logger, err error) { | 35 | func New(name string, maxFileSize int64) (logger *Logger, err error) { |
| 36 | logger = &Logger{} | 36 | logger = &Logger{} |
| 37 | 37 | ||
| 38 | logger.outputFileName = name + "-log" | 38 | logger.outputFileName = name + "-log" |
| 39 | logger.mu = &sync.Mutex{} | 39 | logger.mu = &sync.Mutex{} |
| 40 | logger.maxFileSize = maxFileSize | 40 | logger.maxFileSize = maxFileSize |
| 41 | 41 | ||
| 42 | err = os.Mkdir(logDirName, os.ModePerm) | 42 | err = os.Mkdir(logDirName, os.ModePerm) |
| 43 | if err != nil { | 43 | if err != nil { |
| 44 | if !os.IsExist(err) { | 44 | if !os.IsExist(err) { |
| 45 | fmt.Printf("logger: mkdir: couldn't create event log directory\n") | 45 | fmt.Printf("logger: mkdir: couldn't create event log directory\n") |
| 46 | return nil, err | 46 | return nil, err |
| 47 | } | 47 | } |
| 48 | } | 48 | } |
| 49 | 49 | ||
| 50 | date := strings.Replace(time.Now().Format(time.RFC3339), ":", ".", -1) | 50 | date := strings.Replace(time.Now().Format(time.RFC3339), ":", ".", -1) |
| 51 | logger.outputFileName += "_" + date | 51 | logger.outputFileName += "_" + date |
| 52 | logger.fullName = logger.outputFileName + ".txt" | 52 | logger.fullName = logger.outputFileName + ".txt" |
| 53 | path := filepath.Join(logDirName, logger.fullName) | 53 | path := filepath.Join(logDirName, logger.fullName) |
| 54 | logger.outputFile, err = os.Create(path) | 54 | logger.outputFile, err = os.Create(path) |
| 55 | if err != nil { | 55 | if err != nil { |
| 56 | fmt.Printf("logger: new: couldn't create event log file\n") | 56 | fmt.Printf("logger: new: couldn't create event log file\n") |
| 57 | return nil, err | 57 | return nil, err |
| 58 | } | 58 | } |
| 59 | 59 | ||
| 60 | return logger, nil | 60 | return logger, nil |
| 61 | } | 61 | } |
| 62 | 62 | ||
| 63 | func (l *Logger) Print(format string, v ...interface{}) { | 63 | func (l *Logger) Print(format string, v ...interface{}) { |
| 64 | msg := fmt.Sprintf(format, v...) | 64 | msg := fmt.Sprintf(format, v...) |
| 65 | fmt.Printf(time.Now().Format(time.RFC3339) + ": " + msg + "\n") | 65 | fmt.Printf(time.Now().Format(time.RFC3339) + ": " + msg + "\n") |
| 66 | } | 66 | } |
| 67 | 67 | ||
| 68 | func (l *Logger) Log(format string, v ...interface{}) { | 68 | func (l *Logger) Log(format string, v ...interface{}) { |
| 69 | if l.outputFile == nil { | 69 | if l.outputFile == nil { |
| 70 | return | 70 | return |
| 71 | } | 71 | } |
| 72 | 72 | ||
| 73 | l.mu.Lock() | 73 | l.mu.Lock() |
| 74 | defer l.mu.Unlock() | 74 | defer l.mu.Unlock() |
| 75 | 75 | ||
| 76 | msg := fmt.Sprintf(format, v...) | 76 | msg := fmt.Sprintf(format, v...) |
| 77 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" | 77 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" |
| 78 | if l.shouldSplit(len(s)) { | 78 | if l.shouldSplit(len(s)) { |
| 79 | l.split() | 79 | l.split() |
| 80 | } | 80 | } |
| 81 | l.outputFile.WriteString(s) | 81 | l.outputFile.WriteString(s) |
| 82 | } | 82 | } |
| 83 | 83 | ||
| 84 | func (l *Logger) RequestLog(req *http.Request, userID string) string { | 84 | func (l *Logger) LogHTTPRequest(req *http.Request, userID string) string { |
| 85 | if l.outputFile == nil { | ||
| 86 | return "" | ||
| 87 | } | ||
| 88 | |||
| 89 | if userID == "" { | 85 | if userID == "" { |
| 90 | userID = "-" | 86 | userID = "-" |
| 91 | } | 87 | } |
| 92 | 88 | ||
| 93 | var b strings.Builder | 89 | var b strings.Builder |
| 90 | |||
| 94 | b.WriteString("Request:\n") | 91 | b.WriteString("Request:\n") |
| 95 | // CLF-like header | 92 | // CLF-like header |
| 96 | ts := time.Now().Format(time.RFC3339) | 93 | fmt.Fprintf(&b, "%s %s %s\n", req.RemoteAddr, userID, time.Now().Format(time.RFC3339)) |
| 97 | fmt.Fprintf(&b, "%s %s %s\n", req.RemoteAddr, userID, ts) | ||
| 98 | |||
| 99 | headers := req.Header | ||
| 100 | content := headers.Get("Content-Type") | ||
| 101 | if content != "application/json" { | ||
| 102 | b.WriteString(fmt.Sprintf("%s %s\n", req.Method, req.URL)) | ||
| 103 | for k, h := range headers { | ||
| 104 | b.WriteString(k + ": ") | ||
| 105 | for _, h2 := range h { | ||
| 106 | b.WriteString(h2 + " ") | ||
| 107 | } | ||
| 108 | b.WriteString("\n") | ||
| 109 | } | ||
| 110 | } else { | ||
| 111 | body, err := httputil.DumpRequest(req, true) | ||
| 112 | if err != nil { | ||
| 113 | fmt.Fprintf(os.Stderr, "%v\n", err) | ||
| 114 | } else { | ||
| 115 | b.WriteString(string(body)) | ||
| 116 | } | ||
| 117 | } | ||
| 118 | b.WriteString("\n\n") | ||
| 119 | |||
| 120 | msg := b.String() | ||
| 121 | 94 | ||
| 122 | return msg | 95 | body, err := httputil.DumpRequest(req, true) |
| 123 | } | 96 | if err != nil { |
| 124 | 97 | fmt.Fprintf(os.Stderr, "%v\n", err) | |
| 125 | func (l *Logger) ResponseLog(status int, duration time.Duration, size int64) string { | ||
| 126 | if l.outputFile == nil { | ||
| 127 | return "" | ||
| 128 | } | 98 | } |
| 99 | b.WriteString(string(body) + "\n\n") | ||
| 129 | 100 | ||
| 130 | var b strings.Builder | 101 | return b.String() |
| 131 | fmt.Fprintf(&b, "Response:\n%d %v %dB\n", status, duration, size) | 102 | } |
| 132 | b.WriteString("==============================================================\n") | ||
| 133 | msg := b.String() | ||
| 134 | 103 | ||
| 135 | return msg | 104 | func (l *Logger) LogHTTPResponse(status int, duration time.Duration, size int) string { |
| 105 | splitLine := "==============================================================\n" | ||
| 106 | return fmt.Sprintf("Response:\n%d %v %dB\n%s", status, duration, size, splitLine) | ||
| 136 | } | 107 | } |
| 137 | 108 | ||
| 138 | func (l *Logger) LogHTTPTraffic(in string, out string) { | 109 | func (l *Logger) CombineHTTPLogs(in string, out string) { |
| 139 | if l.outputFile == nil { | 110 | if l.outputFile == nil { |
| 140 | return | 111 | return |
| 141 | } | 112 | } |
| 142 | 113 | ||
| 143 | msg := in + out | ||
| 144 | |||
| 145 | l.mu.Lock() | 114 | l.mu.Lock() |
| 146 | defer l.mu.Unlock() | 115 | defer l.mu.Unlock() |
| 147 | 116 | ||
| 117 | msg := in + out | ||
| 148 | if l.shouldSplit(len(msg)) { | 118 | if l.shouldSplit(len(msg)) { |
| 149 | l.split() | 119 | l.split() |
| 150 | } | 120 | } |
| 151 | l.outputFile.WriteString(msg) | 121 | l.outputFile.WriteString(msg) |
| 152 | } | 122 | } |
| 153 | 123 | ||
| 154 | func (l *Logger) Trace(format string, v ...interface{}) { | 124 | func (l *Logger) Trace(format string, v ...interface{}) { |
| 155 | if l.outputFile == nil { | 125 | if l.outputFile == nil { |
| 156 | return | 126 | return |
| 157 | } | 127 | } |
| 158 | 128 | ||
| 159 | l.mu.Lock() | 129 | l.mu.Lock() |
| 160 | defer l.mu.Unlock() | 130 | defer l.mu.Unlock() |
| 161 | _, file, line, ok := runtime.Caller(1) | 131 | _, file, line, ok := runtime.Caller(1) |
| 162 | 132 | ||
| 163 | s := "" | 133 | s := "" |
| 164 | msg := fmt.Sprintf(format, v...) | 134 | msg := fmt.Sprintf(format, v...) |
| 165 | if ok { | 135 | if ok { |
| 166 | s = fmt.Sprintf("%s: %s %d: %s\n", time.Now().Format(time.RFC3339), file, line, msg) | 136 | s = fmt.Sprintf("%s: %s %d: %s\n", time.Now().Format(time.RFC3339), file, line, msg) |
| 167 | } else { | 137 | } else { |
| 168 | s = fmt.Sprintf(time.Now().Format(time.RFC3339) + ": [can't retreive stack details]:" + msg + "\n") | 138 | s = fmt.Sprintf(time.Now().Format(time.RFC3339) + ": [can't retreive stack details]:" + msg + "\n") |
| 169 | } | 139 | } |
| 170 | if l.shouldSplit(len(s)) { | 140 | if l.shouldSplit(len(s)) { |
| 171 | l.split() | 141 | l.split() |
| 172 | } | 142 | } |
| 173 | l.outputFile.WriteString(s) | 143 | l.outputFile.WriteString(s) |
| 174 | } | 144 | } |
| 175 | 145 | ||
| 176 | func (l *Logger) Close() { | 146 | func (l *Logger) Close() { |
| 177 | if l.outputFile == nil { | 147 | if l.outputFile == nil { |
| 178 | return | 148 | return |
| 179 | } | 149 | } |
| 180 | 150 | ||
| 181 | err := l.outputFile.Close() | 151 | err := l.outputFile.Close() |
| 182 | if err != nil { | 152 | if err != nil { |
| 183 | fmt.Printf("logger: on exit: couldn't close event log file\n") | 153 | fmt.Printf("logger: on exit: couldn't close event log file\n") |
| 184 | } | 154 | } |
| 185 | } | 155 | } |
| 186 | 156 | ||
| 187 | func (l *Logger) split() { | 157 | func (l *Logger) split() { |
| 188 | if l.outputFile == nil { | 158 | if l.outputFile == nil { |
| 189 | return | 159 | return |
| 190 | } | 160 | } |
| 191 | 161 | ||
| 192 | // close old file | 162 | // close old file |
| 193 | err := l.outputFile.Close() | 163 | err := l.outputFile.Close() |
| 194 | if err != nil { | 164 | if err != nil { |
| 195 | fmt.Printf("logger: split: couldn't close event file\n") | 165 | fmt.Printf("logger: split: couldn't close event file\n") |
| 196 | return | 166 | return |
| 197 | } | 167 | } |
| 198 | 168 | ||
| 199 | l.splitCount++ | 169 | l.splitCount++ |
| 200 | // open new file | 170 | // open new file |
| 201 | var errnew error | 171 | var errnew error |
| 202 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)+".txt") | 172 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)+".txt") |
| 203 | l.outputFile, errnew = os.Create(path) | 173 | l.outputFile, errnew = os.Create(path) |
| 204 | 174 | ||
| 205 | if errnew != nil { | 175 | if errnew != nil { |
| 206 | fmt.Printf("logger: split: couldn't create event log file\n") | 176 | fmt.Printf("logger: split: couldn't create event log file\n") |
| 207 | } | 177 | } |
| 208 | } | 178 | } |
| 209 | 179 |