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