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/
main.go
72 lines (60 loc) · 1.97 KB
/
main.go
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package main
import (
"bufio"
"flag"
"fmt"
"log"
"os"
"runtime/pprof"
"time"
"github.com/honeycombio/mongodbtools/logparser"
)
var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
var failures = flag.Bool("fail", false, "write failed lines to stdout")
var successes = flag.Bool("success", false, "write successfully parsed maps to stdout")
var timings = flag.Bool("timings", false, "write intermediate timings/counts to stdout")
func main() {
flag.Parse()
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
file, err := os.Open(flag.Args()[0])
if err != nil {
log.Fatal(err)
}
defer file.Close()
var logparserTime time.Duration
var logparserSuccess int64
var logparserFailure int64
scanner := bufio.NewScanner(file)
scanner.Buffer(make([]byte, 1024*1024), 0)
for scanner.Scan() {
line := scanner.Text()
now := time.Now()
values, err := logparser.ParseLogLine(line)
logparserTime += time.Since(now)
if err != nil {
logparserFailure++
if *failures {
fmt.Println("FAIL:", line, err.Error())
}
} else {
logparserSuccess++
if *successes {
fmt.Println("SUCCESS:", values)
}
}
if *timings && logparserSuccess > 0 && logparserSuccess%50000 == 0 {
fmt.Printf("%dms for %d successfully parsed log lines (%d lines/sec). %d failures (%.2f%%)\n", logparserTime.Nanoseconds()/1e6, logparserSuccess, int64(float64(logparserSuccess)/logparserTime.Seconds()), logparserFailure, 100.0*float64(logparserFailure)/float64(logparserFailure+logparserSuccess))
}
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
fmt.Printf("%dms for %d successfully parsed log lines (%d lines/sec). %d failures (%.2f%%)\n", logparserTime.Nanoseconds()/1e6, logparserSuccess, int64(float64(logparserSuccess)/logparserTime.Seconds()), logparserFailure, 100.0*float64(logparserFailure)/float64(logparserFailure+logparserSuccess))
}