Created
July 20, 2017 13:06
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| package main | |
| import ( | |
| "bufio" | |
| "fmt" | |
| "log" | |
| "os" | |
| "runtime" | |
| "strings" | |
| "sync" | |
| ) | |
| func init() { | |
| runtime.GOMAXPROCS(runtime.NumCPU()) | |
| } | |
| func main() { | |
| file, err := os.Open("muestra.log") | |
| if err != nil { | |
| log.Fatalf("open file: %v", err) | |
| } | |
| defer file.Close() | |
| // Channels for the data | |
| lines := make(chan string) | |
| results := make(chan map[string]string) | |
| // This will tell us when we finished with all the lines | |
| var wg sync.WaitGroup | |
| go func() { | |
| scanner := bufio.NewScanner(file) | |
| for scanner.Scan() { | |
| wg.Add(1) | |
| lines <- scanner.Text() | |
| } | |
| if err := scanner.Err(); err != nil { | |
| log.Fatalf("scanning file: %v", err) | |
| } | |
| close(lines) | |
| }() | |
| keys := []string{ | |
| "RemoteHost", | |
| "RemoteLogName", | |
| "RemoteUser", | |
| "TimeReceived", | |
| "RequestMethod", | |
| "RequestURL", | |
| "RequestHTTP", | |
| "Status", | |
| "ResponseBytes", | |
| "RequestHeaderUserAgent", | |
| "Cached", | |
| "ContentType", | |
| "Node", | |
| "RTime", | |
| "Company", | |
| "Referrer", | |
| } | |
| // This will be invoked every time a line is available | |
| for line := range lines { | |
| go func(line string) { | |
| // Free up a WaitGroup | |
| defer wg.Done() | |
| r := make(map[string]string) | |
| // Split the line | |
| segments := strings.Split(line, " ") | |
| for i, k := range keys { | |
| // Prevent index out of range runtime error | |
| if i > len(segments) { | |
| break | |
| } | |
| switch k { | |
| case "TimeReceived": | |
| r[k] = strings.Trim(segments[i], "[]") | |
| case "RequestMethod": | |
| r[k] = strings.TrimLeft(segments[i], "\"") | |
| case "RequestHTTP": | |
| r[k] = strings.TrimRight(segments[i], "\"") | |
| default: | |
| r[k] = segments[i] | |
| } | |
| } | |
| results <- r | |
| }(line) | |
| } | |
| // Close the results channell once all the data was consumed | |
| go func() { | |
| wg.Wait() | |
| close(results) | |
| }() | |
| // Read all your sweet results here. Do whatever you want with them | |
| count := 0 | |
| for range results { | |
| count++ | |
| } | |
| // To read your result: | |
| // for r := range results { | |
| // // Do something witht r | |
| // } | |
| fmt.Printf("Processed %v lines\n", count) | |
| } |
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