组件分享之后端组件——基于Golang实现的以并行线程计算或分发到机器集群组件GLOW

go get github.com/chrislusf/glow
go get github.com/chrislusf/glow/flow

package main

import (
    "flag"
    "strings"

    "github.com/chrislusf/glow/flow"
)

func main() {
    flag.Parse()

    flow.New().TextFile(
        "/etc/passwd", 3,
    ).Filter(func(line string) bool {
        return !strings.HasPrefix(line, "#")
    }).Map(func(line string, ch chan string) {
        for _, token := range strings.Split(line, ":") {
            ch <- token
        }
    }).Map(func(key string) int {
        return 1
    }).Reduce(func(x int, y int) int {
        return x + y
    }).Map(func(x int) {
        println("count:", x)
    }).Run()
}