Commit a62c16cbdacc61744825a9b190f762f371aba6c0
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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{}) { | ||
| 64 | msg := fmt.Sprintf(format, v...) | ||
| 65 | fmt.Printf(time.Now().Format(time.RFC3339) + ": " + msg + "\n") | ||
| 66 | } | ||
| 67 | |||
| 68 | func (l *Logger) Log(format string, v ...interface{}) { | 63 | func (l *Logger) Log(format string, v ...interface{}) { |
| 69 | if l.outputFile == nil { | 64 | if l.outputFile == nil { |
| 70 | return | 65 | return |
| 71 | } | 66 | } |
| 72 | 67 | ||
| 73 | l.mu.Lock() | 68 | l.mu.Lock() |
| 74 | defer l.mu.Unlock() | 69 | defer l.mu.Unlock() |
| 75 | 70 | ||
| 76 | msg := fmt.Sprintf(format, v...) | 71 | msg := fmt.Sprintf(format, v...) |
| 77 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" | 72 | s := time.Now().Format(time.RFC3339) + ": " + msg + "\n" |
| 78 | if l.shouldSplit(len(s)) { | 73 | if l.shouldSplit(len(s)) { |
| 79 | l.split() | 74 | l.split() |
| 80 | } | 75 | } |
| 81 | l.outputFile.WriteString(s) | 76 | l.outputFile.WriteString(s) |
| 82 | } | 77 | } |
| 83 | 78 | ||
| 84 | func (l *Logger) LogHTTPRequest(req *http.Request, userID string) string { | 79 | func (l *Logger) LogHTTPRequest(req *http.Request, userID string) string { |
| 85 | if userID == "" { | 80 | if userID == "" { |
| 86 | userID = "-" | 81 | userID = "-" |
| 87 | } | 82 | } |
| 88 | 83 | ||
| 89 | var b strings.Builder | 84 | var b strings.Builder |
| 90 | 85 | ||
| 91 | b.WriteString("Request:\n") | 86 | b.WriteString("Request:\n") |
| 92 | // CLF-like header | 87 | // CLF-like header |
| 93 | fmt.Fprintf(&b, "%s %s %s\n", req.RemoteAddr, userID, time.Now().Format(time.RFC3339)) | 88 | fmt.Fprintf(&b, "%s %s %s\n", req.RemoteAddr, userID, time.Now().Format(time.RFC3339)) |
| 94 | 89 | ||
| 95 | body, err := httputil.DumpRequest(req, true) | 90 | body, err := httputil.DumpRequest(req, true) |
| 96 | if err != nil { | 91 | if err != nil { |
| 97 | fmt.Fprintf(os.Stderr, "%v\n", err) | 92 | fmt.Fprintf(os.Stderr, "%v\n", err) |
| 98 | } | 93 | } |
| 99 | b.WriteString(string(body) + "\n\n") | 94 | b.WriteString(string(body) + "\n\n") |
| 100 | 95 | ||
| 101 | return b.String() | 96 | return b.String() |
| 102 | } | 97 | } |
| 103 | 98 | ||
| 104 | func (l *Logger) LogHTTPResponse(status int, duration time.Duration, size int) string { | 99 | func (l *Logger) LogHTTPResponse(status int, duration time.Duration, size int) string { |
| 105 | splitLine := "==============================================================\n" | 100 | splitLine := "==============================================================\n" |
| 106 | return fmt.Sprintf("Response:\n%d %v %dB\n%s", status, duration, size, splitLine) | 101 | return fmt.Sprintf("Response:\n%d %v %dB\n%s", status, duration, size, splitLine) |
| 107 | } | 102 | } |
| 108 | 103 | ||
| 109 | func (l *Logger) CombineHTTPLogs(in string, out string) { | 104 | func (l *Logger) CombineHTTPLogs(in string, out string) { |
| 110 | if l.outputFile == nil { | 105 | if l.outputFile == nil { |
| 111 | return | 106 | return |
| 112 | } | 107 | } |
| 113 | 108 | ||
| 114 | l.mu.Lock() | 109 | l.mu.Lock() |
| 115 | defer l.mu.Unlock() | 110 | defer l.mu.Unlock() |
| 116 | 111 | ||
| 117 | msg := in + out | 112 | msg := in + out |
| 118 | if l.shouldSplit(len(msg)) { | 113 | if l.shouldSplit(len(msg)) { |
| 119 | l.split() | 114 | l.split() |
| 120 | } | 115 | } |
| 121 | l.outputFile.WriteString(msg) | 116 | l.outputFile.WriteString(msg) |
| 122 | } | 117 | } |
| 123 | 118 | ||
| 119 | func (l *Logger) Print(format string, v ...interface{}) { | ||
| 120 | _, file, line, _ := runtime.Caller(1) | ||
| 121 | |||
| 122 | msg := fmt.Sprintf(format, v...) | ||
| 123 | fmt.Printf("%s: %s %d: %s\n", time.Now().Format(time.RFC3339), file, line, msg) | ||
| 124 | } | ||
| 125 | |||
| 124 | func (l *Logger) Trace(format string, v ...interface{}) { | 126 | func (l *Logger) Trace(format string, v ...interface{}) { |
| 125 | if l.outputFile == nil { | 127 | if l.outputFile == nil { |
| 126 | return | 128 | return |
| 127 | } | 129 | } |
| 128 | 130 | ||
| 129 | l.mu.Lock() | 131 | l.mu.Lock() |
| 130 | defer l.mu.Unlock() | 132 | defer l.mu.Unlock() |
| 131 | _, file, line, ok := runtime.Caller(1) | ||
| 132 | 133 | ||
| 133 | s := "" | 134 | _, file, line, _ := runtime.Caller(1) |
| 134 | msg := fmt.Sprintf(format, v...) | 135 | msg := fmt.Sprintf(format, v...) |
| 135 | if ok { | 136 | 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) | 137 | |
| 137 | } else { | ||
| 138 | s = fmt.Sprintf(time.Now().Format(time.RFC3339) + ": [can't retreive stack details]:" + msg + "\n") | ||
| 139 | } | ||
| 140 | if l.shouldSplit(len(s)) { | 138 | if l.shouldSplit(len(s)) { |
| 141 | l.split() | 139 | l.split() |
| 142 | } | 140 | } |
| 143 | l.outputFile.WriteString(s) | 141 | l.outputFile.WriteString(s) |
| 144 | } | 142 | } |
| 145 | 143 | ||
| 146 | func (l *Logger) Close() { | 144 | func (l *Logger) Close() { |
| 147 | if l.outputFile == nil { | 145 | if l.outputFile == nil { |
| 148 | return | 146 | return |
| 149 | } | 147 | } |
| 150 | 148 | ||
| 151 | err := l.outputFile.Close() | 149 | err := l.outputFile.Close() |
| 152 | if err != nil { | 150 | if err != nil { |
| 153 | fmt.Printf("logger: on exit: couldn't close event log file\n") | 151 | fmt.Printf("logger: on exit: couldn't close event log file\n") |
| 154 | } | 152 | } |
| 155 | } | 153 | } |
| 156 | 154 | ||
| 157 | func (l *Logger) split() { | 155 | func (l *Logger) split() { |
| 158 | if l.outputFile == nil { | 156 | if l.outputFile == nil { |
| 159 | return | 157 | return |
| 160 | } | 158 | } |
| 161 | 159 | ||
| 162 | // close old file | 160 | // close old file |
| 163 | err := l.outputFile.Close() | 161 | err := l.outputFile.Close() |
| 164 | if err != nil { | 162 | if err != nil { |
| 165 | fmt.Printf("logger: split: couldn't close event file\n") | 163 | fmt.Printf("logger: split: couldn't close event file\n") |
| 166 | return | 164 | return |
| 167 | } | 165 | } |
| 168 | 166 | ||
| 169 | l.splitCount++ | 167 | l.splitCount++ |
| 170 | // open new file | 168 | // open new file |
| 171 | var errnew error | 169 | var errnew error |
| 172 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)+".txt") | 170 | path := filepath.Join(logDirName, l.outputFileName+fmt.Sprintf("(%d)", l.splitCount)+".txt") |
| 173 | l.outputFile, errnew = os.Create(path) | 171 | l.outputFile, errnew = os.Create(path) |
| 174 | 172 | ||
| 175 | if errnew != nil { | 173 | if errnew != nil { |
| 176 | fmt.Printf("logger: split: couldn't create event log file\n") | 174 | fmt.Printf("logger: split: couldn't create event log file\n") |
| 177 | } | 175 | } |