file_go.go
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package main | |
import ( | |
//"io/ioutil" | |
"fmt" | |
"log" | |
"io" | |
"os" | |
"net/http" | |
"time" | |
"runtime" | |
) | |
func main() { | |
c := make(chan string) | |
start := time.Now() | |
log.Println("Starting") | |
links := map[string]string{ | |
"Python-3.7.0a2.tgz": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"Python-3.6.0.tgz": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"Python-3.5.0.tgz": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"Python-3.4.0.amd64.msi": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-3.7.0a1.exe": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-2.7.9rc1.amd64.msi": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-2.7.9-macosx10.6.pkg": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-3.6.2rc2-macosx10.6.pkg": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-3.6.2rc1.exe": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
"python-3.6.2.exe": "http://ipv4.download.thinkbroadband.com/1GB.zip", | |
} | |
for n, link :=range(links){ | |
go downloadFile(n, link, c) | |
} | |
for i := 0; i < len(links); i++ { | |
fmt.Println(<-c) | |
} | |
t := time.Now() | |
elapsed := t.Sub(start) | |
fmt.Println("total time to run the program", elapsed) | |
} | |
//Functions | |
func downloadFile(n string, link string, c chan string) { | |
resp, err := http.Get(link) | |
if err != nil { | |
log.Println("Could not download file", link) | |
c <- link | |
return | |
} | |
defer resp.Body.Close() | |
//Create file object | |
file, err := os.Create("/tmp/" + n) | |
if err != nil { | |
log.Fatal("Could not create file", n) | |
return | |
} | |
log.Println("Downloading File", n) | |
_, err = io.Copy(file, resp.Body) | |
//ioutil.ReadAll(resp.Body) | |
if err != nil { | |
log.Fatal(err) | |
return | |
} | |
file.Close() | |
log.Println("File downloaded") | |
c <- link | |
} |
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