channel golang code example

Example 1: golang channel

package main

import (
	"encoding/json"
	"fmt"
	"runtime"
	"time"
)

type Profile struct {
	Name string `json:"name"`
	Age  uint   `json:"age"`
}

func Publisher(data string, channel chan interface{}) {
	channel <- string(data)
}

func Subscribe(channel chan interface{}) {
	profile := <-channel
	fmt.Println(profile)
}

func main() {
	// set core max to use for gorutine
	runtime.GOMAXPROCS(2)

	// init compose type data
	profileChannel := make(chan interface{})

	// set value for struct
	var profile Profile
	profile.Name = "john doe"
	profile.Age = 23

	// convert to json
	toJson, _ := json.Marshal(profile)

	// sending channel data
	go Publisher(string(toJson), profileChannel)

	// get channel data
	go Subscribe(profileChannel)

	// delay gorutine 1000 second
	time.Sleep(time.Second * 1)
}

Example 2: golang make chan

ch <- v    // Send v to channel ch.
v := <-ch  // Receive from ch, and
           // assign value to v.