49 lines
895 B
Go
49 lines
895 B
Go
// For more tutorials: https://blog.learngoprogramming.com
|
|
//
|
|
// Copyright © 2018 Inanc Gumus
|
|
// Learn Go Programming Course
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
//
|
|
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
// pipeline determines the behavior of log processing
|
|
type pipeline struct {
|
|
}
|
|
|
|
// pipe the log lines through funcs and produce a result
|
|
func pipe(opts pipeline) ([]result, error) {
|
|
var (
|
|
l = 1
|
|
in = bufio.NewScanner(os.Stdin)
|
|
sum = make(map[string]result)
|
|
)
|
|
|
|
// parse the log lines
|
|
for in.Scan() {
|
|
r, err := parseResult(in.Text())
|
|
if err != nil {
|
|
return nil, fmt.Errorf("line %d: %v", l, err)
|
|
}
|
|
|
|
l++
|
|
|
|
// group the log lines by domain
|
|
sum[r.domain] = addResult(r, sum[r.domain])
|
|
}
|
|
|
|
// collect the grouped results
|
|
res := make([]result, 0, len(sum))
|
|
for _, r := range sum {
|
|
res = append(res, r)
|
|
}
|
|
|
|
return res, in.Err()
|
|
}
|