How to use Download method of util Package

Best Gauge code snippet using util.Download

main.go

Source:main.go

...110		downloadURL := ""111		// Is this a supported platform112		for _, a := range gh.Assets {113			if a.Name == lookingFor {114				downloadURL = a.BrowserDownloadURL115			}116		}117		if downloadURL == "" {118			util.Bail(fmt.Errorf(119				"could not find an appropriate binary for %s-%s",120				runtime.GOOS,121				runtime.GOARCH,122			))123		}124		/// Download the binary125		conchBin, err := updaterDownloadFile(downloadURL)126		if err != nil {127			util.Bail(err)128		}129		/// Verify checksum130		// This assumes our build system is being sensible about file names.131		// At time of writing, it is.132		shaURL := downloadURL + ".sha256"133		shaBin, err := updaterDownloadFile(shaURL)134		if err != nil {135			util.Bail(err)136		}137		// The checksum file looks like "thisisahexstring ./conch-os-arch"138		bits := strings.Split(string(shaBin[:]), " ")139		remoteSum := bits[0]140		if !util.JSON {141			fmt.Fprintf(142				os.Stderr,143				"Server-side SHA256 sum: %s\n",144				remoteSum,145			)146		}147		h := sha256.New()148		h.Write(conchBin)149		sum := hex.EncodeToString(h.Sum(nil))150		if !util.JSON {151			fmt.Fprintf(152				os.Stderr,153				"SHA256 sum of downloaded binary: %s\n",154				sum,155			)156		}157		if sum == remoteSum {158			if !util.JSON {159				fmt.Fprintf(160					os.Stderr,161					"SHA256 checksums match\n",162				)163			}164		} else {165			util.Bail(fmt.Errorf(166				"!!! SHA of downloaded file does not match the provided SHA sum: '%s' != '%s'",167				sum,168				remoteSum,169			))170		}171		/// Write out the binary172		binPath, err := os.Executable()173		if err != nil {174			util.Bail(err)175		}176		fullPath, err := filepath.EvalSymlinks(binPath)177		if err != nil {178			util.Bail(err)179		}180		if !util.JSON {181			fmt.Fprintf(182				os.Stderr,183				"Detected local binary path: %s\n",184				fullPath,185			)186		}187		existingStat, err := os.Lstat(fullPath)188		if err != nil {189			util.Bail(err)190		}191		// On sensible operating systems, we can't open and write to our192		// own binary, because it's in use. We can, however, move a file193		// into that place.194		newPath := fmt.Sprintf("%s-%s", fullPath, gh.SemVer)195		if !util.JSON {196			fmt.Fprintf(197				os.Stderr,198				"Writing to temp file '%s'\n",199				newPath,200			)201		}202		if err := ioutil.WriteFile(newPath, conchBin, existingStat.Mode()); err != nil {203			util.Bail(err)204		}205		if !util.JSON {206			fmt.Fprintf(207				os.Stderr,208				"Renaming '%s' to '%s'\n",209				newPath,210				fullPath,211			)212		}213		if err := os.Rename(newPath, fullPath); err != nil {214			util.Bail(err)215		}216		if !util.JSON {217			fmt.Fprintf(218				os.Stderr,219				"Successfully upgraded from %s to %s\n",220				util.SemVersion,221				gh.SemVer,222			)223		}224	}225}226func updaterDownloadFile(downloadURL string) (data []byte, err error) {227	if !util.JSON {228		fmt.Fprintf(229			os.Stderr,230			"Downloading '%s'\n",231			downloadURL,232		)233	}234	resp, err := http.Get(downloadURL)235	if err != nil {236		return data, err237	}238	if resp.StatusCode != 200 {239		return data, fmt.Errorf(240			"could not download '%s' (status %d)",241			downloadURL,242			resp.StatusCode,243		)244	}...

download.go

Source:download.go

...8	"os"9	"strings"10	"time"11)12func Download(storagePath, fileName string,13	recv, send chan util.IMessage,14	addr *net.UDPAddr, ctx context.Context) {15	// send init message and wait response16	initData := make([]byte, util.MessHeadLen)17	initData[0] = util.DownloadFlag | util.Init18	initData = append(initData, []byte(fileName)...)19	var downloadId, size uint1620	try := 021	for try <= util.MaxDownloadTry {22		log.Printf("Connect to download file system %s %dth time", fileName, try)23		try++24		initMess := util.IMessage{25			Addr: addr,26			Data: initData,27		}28		send <- initMess29		timer := time.NewTicker(time.Second * 2)30		select {31		case <-timer.C:32			continue33		case resp := <-recv:34			respData := resp.Data35			if len(respData) < util.MessHeadLen {36				continue37			}38			respAck := respData[0] & 0x7f39			switch respAck {40			case util.FileNoExist:41				log.Printf("file %s no exists", fileName)42				return43			case util.InitAck:44			default:45				continue46			}47			downloadId = binary.BigEndian.Uint16(respData[util.MessIdIndex : util.MessIdIndex+2])48			size = binary.BigEndian.Uint16(respData[util.MessLenIndex : util.MessLenIndex+2])49			try = util.MaxDownloadTry * 250		}51	}52	log.Printf("Begin to download %s,wait", fileName)53	dataSlice := make([][]byte, size)54	ackMap := make(map[uint16]struct{})55	ackLen := size56	// init ackMap57	for i := uint16(0); i < ackLen; i++ {58		ackMap[i] = struct{}{}59	}60	timeout := time.Tick(util.DownloadTimeout)61	downloadDisplay := float32(0)62	for {63		again := time.Tick(time.Second * 20)64		select {65		case <-ctx.Done():66			return67		case resp := <-recv:68			respData := resp.Data69			if len(respData) < util.MessHeadLen {70				continue71			}72			respAck := respData[0] & 0x7f73			switch respAck {74			case util.Normal:75			default:76				continue77			}78			index := binary.BigEndian.Uint16(respData[util.MessLenIndex : util.MessLenIndex+2])79			index = index % size80			_, exist := ackMap[index]81			if !exist {82				continue83			}84			delete(ackMap, index)85			dataSlice[index] = append(dataSlice[index], respData[util.MessHeadLen:]...)86			downloadProcess := float32(ackLen-uint16(len(ackMap))) / float32(ackLen)87			if downloadProcess*100 >= downloadDisplay {88				log.Printf("download process: %.2f%%\n", downloadProcess*100)89				downloadDisplay += 1090			}91			if len(ackMap) == 0 {92				downloadDisplay = 093				downloadFile := util.DownloadFile{94					FileName: fileName,95					Data:     dataSlice,96				}97				storage(storagePath, downloadFile)98				return99			}100		case <-again:101			for index, _ := range ackMap {102				var downloadBytes []byte103				downloadBytes = append(downloadBytes, util.DownloadFlag|util.DownloadSomeone)104				idBytes := make([]byte, 2, 2)105				binary.BigEndian.PutUint16(idBytes, downloadId)106				downloadBytes = append(downloadBytes, idBytes...)107				indexLen := make([]byte, 2, 2)108				binary.BigEndian.PutUint16(indexLen, index)109				downloadBytes = append(downloadBytes, indexLen...)110				go func(bytes []byte) {111					mess := util.IMessage{112						Addr: addr,113						Data: bytes,114					}115					send <- mess116				}(downloadBytes)117			}118		case <-timeout:119			log.Printf("download fail with timeout")120			return121		}122	}123}124func storage(path string, downloadFile util.DownloadFile) {125	path = strings.TrimRight(path, string(os.PathSeparator))126	path = path + string(os.PathSeparator) + downloadFile.FileName127	try := 0128	var data []byte129	for _, bytes := range downloadFile.Data {130		data = append(data, bytes...)131	}132	for try < util.MaxStorageTry {133		try++134		f, err := os.Create(path)135		if err != nil {136			log.Printf("Failed to store %s %dth time", downloadFile.FileName, try)137			continue138		}...

Download

Using AI Code Generation

1import (2func main() {3}4import (5func Download(url, filename string) {6	fmt.Println("Downloading ", url)7	resp, err := http.Get(url)8	if err != nil {9		panic(err)10	}11	defer resp.Body.Close()12	out, err := os.Create(filename)13	if err != nil {14		panic(err)15	}16	defer out.Close()17	_, err = io.Copy(out, resp.Body)18	if err != nil {19		panic(err)20	}21}22Go has a number of built-in packages that you can use in your code. For example, the fmt package provides functions such as Println for printing to the console. You can use these packages by importing them into your code. For example, to use the fmt package in your code, you need to add the following line at the top of your file:23import "fmt"24You can import multiple packages in a single import statement. For example, to import the fmt and io packages into your code, you need to add the following line at the top of your file:25import (26import f "fmt"27You can also import a package and rename it. For example, the following statement imports the fmt package and renames it to format. This is useful when you want to use a package with a long name or when you want to avoid using the same name for two packages. The following code uses the renamed package:28import . "fmt"29func main() {30    Println("Hello")31}32You can also import a package and rename it. For example, the following statement imports the fmt package and renames it to format. This is useful when you want to use a package with a long name or when you want to avoid using the same name for two packages. The following code uses the renamed package:33import . "fmt"34func main() {35    Println("Hello")36}

Download

Using AI Code Generation

1import (2func main() {3}4import (5func Download(url string) string {6	resp, err := http.Get(url)7	if err != nil {8	}9	defer resp.Body.Close()10	body, err := ioutil.ReadAll(resp.Body)11	if err != nil {12	}13	return string(body)14}15import (16func TestDownload(t *testing.T) {17		t.Errorf("Download failed")18	}19}20import (21func BenchmarkDownload(b *testing.B) {22	for i := 0; i < b.N; i++ {23	}24}25import (26func ExampleDownload() {27}28import (29func Download(url string) string {30	resp, err := http.Get(url)31	if err != nil {32	}33	defer resp.Body.Close()34	body, err := ioutil.ReadAll(resp.Body)35	if err != nil {36	}37	return string(body)38}39import (40func TestDownload(t *testing.T) {41		t.Errorf("Download failed")42	}43}44import (45func BenchmarkDownload(b *testing.B) {46	for i := 0; i < b.N; i++ {47	}48}49import (

Download

Using AI Code Generation

1import (2func main() {3}4import (5func main() {6}7import (8func main() {9}10import (11func main() {12}13import (14func main() {15}16import (17func main() {18}19import (20func main() {

Download

Using AI Code Generation

1import (2func main() {3	if err != nil {4		fmt.Println(err)5	}6}7import (8func main() {9	if err != nil {10		fmt.Println(err)11	}12}13import (14func main() {15	if err != nil {16		fmt.Println(err)17	}18}19import (20func main() {21	if err != nil {22		fmt.Println(err)23	}24}25import (26func main() {27	if err != nil {28		fmt.Println(err)29	}30}31import (32func main() {33	if err != nil {34		fmt.Println(err)35	}36}37import (38func main() {

Download

Using AI Code Generation

1import (2func main() {3    fmt.Println("Download")4    util.Download()5}6import (7func main() {8    fmt.Println("Upload")9    util.Upload()10}11import (12func main() {13    fmt.Println("Delete")14    util.Delete()15}16import (17func main() {18    fmt.Println("Update")19    util.Update()20}21import (22func main() {23    fmt.Println("Rename")24    util.Rename()25}26import (27func main() {28    fmt.Println("Move")29    util.Move()30}31import (32func main() {33    fmt.Println("Copy")34    util.Copy()35}36import (37func main() {38    fmt.Println("Create")39    util.Create()40}41import (42func main() {43    fmt.Println("Share")44    util.Share()45}

Download

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello World")4}5import (6func main() {7	fmt.Println("Hello World")8}9import (10func main() {11	fmt.Println("Hello World")12}13import (14func main() {15	fmt.Println("Hello World")16}17import (18func main() {19	fmt.Println("Hello World")20}21import (22func main() {23	fmt.Println("Hello World")24}25import (26func main() {27	fmt.Println("Hello World")28}29import (30func main() {31	fmt.Println("Hello World")32}

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