How to use WaitForUpdate method of main Package

Best Syzkaller code snippet using main.WaitForUpdate

archive.go

Source:archive.go

1package main2import (3	"archive/zip"4	"bufio"5	"errors"6	"fmt"7	"io"8	"io/ioutil"9	"log"10	"net/http"11	"os"12	"os/exec"13	"path/filepath"14	"runtime"15)16const (17	TldrRemoteUrl   = "https://github.com/tldr-pages/tldr-pages.github.io/"18	TldrRemotePath  = "raw/master/assets/tldr.zip"19	DataRemoteUrl   = "https://github.com/atlasamerican/cheatsheet/"20	DataRemotePath  = "raw/assets/data.zip"21	GithubStatusUrl = "https://www.githubstatus.com/api/v2/status.json"22)23var osMap = map[string]string{24	"linux":   "linux",25	"darwin":  "osx",26	"windows": "windows",27}28type TldrPage struct {29	name    string30	content string31}32type Archive[T TldrPage | Dataset] struct {33	name       string34	remoteUrl  string35	remotePath string36	remoteRef  string37	statusUrl  string38	path       string39	zipPath    string40	revPath    string41	lang       string42	updating   chan bool43}44func newTldrArchive(path string) *Archive[TldrPage] {45	a := &Archive[TldrPage]{46		name:       "tldr",47		remoteUrl:  TldrRemoteUrl,48		remotePath: TldrRemotePath,49		remoteRef:  "HEAD",50		statusUrl:  GithubStatusUrl,51		path:       path,52		zipPath:    filepath.Join(path, "tldr.zip"),53		revPath:    filepath.Join(path, "tldr.zip.rev"),54		lang:       "en",55		updating:   make(chan bool, 1),56	}57	a.init()58	return a59}60func newDataArchive(path string) *Archive[Dataset] {61	a := &Archive[Dataset]{62		name:       "data",63		remoteUrl:  DataRemoteUrl,64		remotePath: DataRemotePath,65		remoteRef:  "refs/heads/assets",66		statusUrl:  GithubStatusUrl,67		path:       path,68		zipPath:    filepath.Join(path, "data.zip"),69		revPath:    filepath.Join(path, "data.zip.rev"),70		lang:       "en",71		updating:   make(chan bool, 1),72	}73	a.init()74	return a75}76func (a *Archive[T]) init() {77	a.updating <- true78	go func() {79		ok, rev, rrev := a.checkUpdate()80		if ok {81			if ok, err := a.update(); err != nil {82				if !ok {83					log.Fatal(err)84				}85				logger.Log("[error] %s: %v", a.name, err)86			} else {87				debugLogger.Log("[archive] %s: %s -> %s", a.name, rev, rrev)88			}89		}90		close(a.updating)91	}()92}93func (a *Archive[T]) waitForUpdate() {94	_, ok := <-a.updating95	if !ok {96		return97	}98	<-a.updating99}100func (a *Archive[T]) getRemoteRev() (string, bool) {101	cmd := exec.Command("git", "ls-remote", a.remoteUrl)102	stdout, err := cmd.StdoutPipe()103	if err != nil {104		log.Fatal(err)105	}106	if err := cmd.Start(); err != nil {107		log.Fatal(err)108	}109	var rev string110	scanner := bufio.NewScanner(stdout)111	for scanner.Scan() {112		line := scanner.Text()113		if _, err := fmt.Sscanf(line, "%s "+a.remoteRef, &rev); err == nil {114			break115		}116	}117	if err := cmd.Wait(); err != nil {118		log.Fatal(err)119	}120	if rev == "" {121		debugLogger.Log("[archive] %s: failed to get revision", a.name)122		return rev, false123	}124	debugLogger.Log("[archive] %s: remote %s", a.name, rev)125	return rev, true126}127func (a *Archive[T]) getRev() (string, error) {128	buf, err := ioutil.ReadFile(a.revPath)129	if err != nil {130		return "", err131	}132	return string(buf), nil133}134func (a *Archive[T]) checkStatus() bool {135	_, err := http.Get(a.statusUrl)136	return err == nil137}138func (a *Archive[T]) checkUpdate() (bool, string, string) {139	if !a.checkStatus() {140		logger.Log("[error] failed to get archive status; check your internet connection")141		return false, "", ""142	}143	debugLogger.Log("[archive] checking for updates...")144	rrev, ok := a.getRemoteRev()145	if !ok {146		return true, "n/a", "unknown"147	}148	rev, err := a.getRev()149	if err != nil {150		return true, "unknown", rrev151	}152	if rev != rrev {153		return true, rev, rrev154	}155	debugLogger.Log("[archive] %s: up-to-date", a.name)156	return false, "", ""157}158func (a *Archive[T]) update() (bool, error) {159	debugLogger.Log("[archive] updating %s", a.zipPath)160	res, err := http.Get(a.remoteUrl + a.remotePath)161	if err != nil {162		return false, err163	}164	defer res.Body.Close()165	if res.StatusCode != 200 {166		msg := fmt.Sprintf("bad status code: %d", res.StatusCode)167		return false, errors.New(msg)168	}169	if err := os.MkdirAll(a.path, 0700); err != nil {170		log.Fatal(err)171	}172	file, err := os.Create(a.zipPath)173	if err != nil {174		return false, err175	}176	defer file.Close()177	_, err = io.Copy(file, res.Body)178	if err != nil {179		return false, err180	}181	rev, ok := a.getRemoteRev()182	if !ok {183		return true, errors.New("failed to get remote revision")184	}185	err = ioutil.WriteFile(186		a.revPath,187		[]byte(rev),188		0600,189	)190	if err != nil {191		return true, err192	}193	return true, nil194}195func (a *Archive[T]) getPage(name string) (*TldrPage, error) {196	a.waitForUpdate()197	archive, err := zip.OpenReader(a.zipPath)198	if err != nil {199		log.Fatal(err)200	}201	defer archive.Close()202	var pages string203	if a.lang == "en" {204		pages = "pages"205	} else {206		pages = "pages." + a.lang207	}208	osName := osMap[runtime.GOOS]209	for i, dir := range []string{osName, "common"} {210		path := filepath.Join(pages, dir, name+".md")211		file, err := archive.Open(path)212		if err != nil {213			if i == 0 {214				continue215			}216			return nil, err217		}218		defer file.Close()219		buf, err := ioutil.ReadAll(file)220		if err != nil {221			log.Fatal(err)222		}223		return &TldrPage{name, string(buf)}, nil224	}225	return nil, nil226}227func (a *Archive[T]) readData() ([]Command, map[string]Filter) {228	a.waitForUpdate()229	archive, err := zip.OpenReader(a.zipPath)230	if err != nil {231		log.Fatal(err)232	}233	defer archive.Close()234	cmds := make([]Command, 0)235	fs := make(map[string]Filter)236	fsFile := filepath.Join("data", filtersFile)237	for _, file := range archive.File {238		f, err := file.Open()239		if err != nil {240			log.Fatal(err)241		}242		defer f.Close()243		buf, err := ioutil.ReadAll(f)244		if err != nil {245			log.Fatal(err)246		}247		if file.Name == fsFile {248			fs, err = readFiltersBuf(buf, fs)249			if err != nil {250				log.Fatal(err)251			}252		} else {253			cmds, err = readCommandsBuf(buf, cmds)254			if err != nil {255				log.Fatal(err)256			}257		}258	}259	return cmds, fs260}...

forever-runner.go

Source:forever-runner.go

1package forever2import (3	"fmt"4	"os"5	"os/signal"6	"syscall"7	"time"8	"github.com/octoblu/go-meshblu-connector-ignition/logger"9	"github.com/octoblu/go-meshblu-connector-ignition/runner"10)11var mainLogger logger.MainLogger12// Forever defines the interface to run the runner for forever13type Forever interface {14	Start() error15	Shutdown()16}17// Client defines the stucture of the client18type Client struct {19	runnerClient   runner.Runner20	running        bool21	currentVersion string22}23// NewRunner creates a new instance of the forever runner24func NewRunner(serviceConfig *runner.Config, currentVersion string) Forever {25	runnerClient := runner.New(serviceConfig)26	return &Client{27		runnerClient:   runnerClient,28		running:        false,29		currentVersion: currentVersion,30	}31}32// Start runs the connector forever33func (client *Client) Start() error {34	if mainLogger == nil {35		mainLogger = logger.GetMainLogger()36	}37	pid := os.Getpid()38	err := writePID(pid)39	if err != nil {40		mainLogger.Error("forever", "Error locking", err)41		return err42	}43	mainLogger.Info("forever", fmt.Sprintf("locking pid %v", pid))44	client.waitForProcessChange()45	client.waitForSigterm()46	client.waitForUpdate()47	client.running = true48	for {49		if !client.running {50			return nil51		}52		err = client.runnerClient.Start()53		if err != nil {54			mainLogger.Error("forever", "Error running connector (will retry soon)", err)55			time.Sleep(10 * time.Second)56			continue57		}58		mainLogger.Info("forever", "running...")59		mainLogger.Info("forever", fmt.Sprintf("unlocking pid %v", pid))60		unlockPID()61		for {62			if !client.running {63				mainLogger.Info("forever", "forever is over, shutting down")64				return nil65			}66			time.Sleep(time.Second)67			continue68		}69	}70}71// Shutdown will give tell the connector runner it is time to shutdown72func (client *Client) Shutdown() {73	mainLogger.Info("forever", "forever is going to Shutdown")74	client.running = false75}76func (client *Client) waitForSigterm() {77	sigChan := make(chan os.Signal, 1)78	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)79	go func() {80		for range sigChan {81			mainLogger.Info("forever", "Interrupt received, waiting to exit")82			client.Shutdown()83		}84	}()85}86func (client *Client) waitForUpdate() {87	go func() {88		firstTime := true89		for {90			if !firstTime {91				time.Sleep(time.Minute)92				// startNew()93				// return94			}95			firstTime = false96			latestVersion, err := resolveLatestVersion()97			if err != nil {98				mainLogger.Error("forever", "Cannot get latest version", err)99				continue100			}101			if !shouldUpdate(client.currentVersion, latestVersion) {102				continue103			}104			mainLogger.Info("forever", fmt.Sprintf("there is a new ignition version %s", latestVersion))105			err = doUpdate(latestVersion)106			if err != nil {107				mainLogger.Error("forever", "Error updating myself", err)108				continue109			}110			err = startNew()111			if err != nil {112				mainLogger.Error("forever", "start new error", err)113				continue114			}115			mainLogger.Info("forever", "I am updated and started new process")116			return117		}118	}()119}120func (client *Client) waitForProcessChange() {121	go func() {122		for {123			time.Sleep(time.Second)124			pid, err := getPID()125			if err != nil {126				mainLogger.Error("forever", "get pid error", err)127				continue128			}129			if pid == 0 {130				mainLogger.Info("forever", "pid is 0")131			}132			if pid == os.Getpid() {133				continue134			}135			mainLogger.Info("forever", fmt.Sprintf("process changed %v != %v", pid, os.Getpid()))136			client.Shutdown()137			return138		}139	}()140}...

scanner.go

Source:scanner.go

...22	Height int23	Time   string24	Info   string25}26// WaitForUpdate will listen to the scanner until a line matches upgradeRegexp.27// It returns (info, nil) on a matching line28// It returns (nil, err) if the input stream errored29// It returns (nil, nil) if the input closed without ever matching the regexp30func WaitForUpdate(scanner *bufio.Scanner) (*UpgradeInfo, error) {31	for scanner.Scan() {32		line := scanner.Text()33		if upgradeRegex.MatchString(line) {34			subs := upgradeRegex.FindStringSubmatch(line)35			info := UpgradeInfo{36				Name: subs[1],37				Info: subs[7],38			}39			var err error40			if subs[3] != "" {41				// match height42				info.Height, err = strconv.Atoi(subs[4])43				if err != nil {44					return nil, errors.Wrap(err, "parse number from regexp")...

WaitForUpdate

Using AI Code Generation

1import (2func main() {3	ctx, cancel := context.WithCancel(context.Background())4	defer cancel()5	if len(os.Args) != 4 {6		log.Fatal("Usage: go run 2.go <host> <user> <password>")7	}8	url, err := soap.ParseURL(os.Args[1])9	if err != nil {10		log.Fatal(err)11	}12	url.User = url.UserPassword(os.Args[2], os.Args[3])13	c, err := govmomi.NewClient(ctx, url, true)14	if err != nil {15		log.Fatal(err)16	}17	finder := find.NewFinder(c.Client, true)18	dc, err := finder.DefaultDatacenter(ctx)19	if err != nil {20		log.Fatal(err)21	}22	finder.SetDatacenter(dc)23	vms, err := finder.VirtualMachineList(ctx, "*")24	if err != nil {25		log.Fatal(err)26	}27	if len(vms) == 0 {28		log.Fatal("No VM found")29	}30	err = vms[0].Properties(ctx, vms[0].Reference(), []string{"name", "runtime.powerState"}, &mvm)31	if err != nil {32		log.Fatal(err)33	}34	fmt.Printf("Name %s35	fmt.Printf("PowerState %s36	if mvm.Runtime.PowerState != types.VirtualMachinePowerStatePoweredOn {37		task, err := vms[0].PowerOn(ctx)38		if err != nil {39			log.Fatal(err)40		}41		err = task.Wait(ctx)42		if err != nil {43			log.Fatal(err)44		}45	}46	err = c.WaitForUpdatesEx(ctx, strconv.Itoa(int(mvm.Runtime.MaxCpuUsage)), []types.ObjectUpdate{{

WaitForUpdate

Using AI Code Generation

1import (2func main() {3	ctx, cancel := context.WithCancel(context.Background())4	defer cancel()5	ctx, cancel = context.WithTimeout(ctx, 30*time.Second)6	defer cancel()

WaitForUpdate

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	if err != nil {5		log.Fatal(err)6	}7	c, err := govmomi.NewClient(ctx, u, true)8	if err != nil {9		log.Fatal(err)10	}11	defer c.Logout(ctx)12	f := find.NewFinder(c.Client, true)13	dc, err := f.DefaultDatacenter(ctx)14	if err != nil {15		log.Fatal(err)16	}17	f.SetDatacenter(dc)18	vms, err := f.VirtualMachineList(ctx, "*")19	if err != nil {20		log.Fatal(err)21	}22	m := event.NewManager(c.Client)23	filterSpec := types.EventFilterSpec{24		Entity: &types.EventFilterSpecByEntity{25			Entity:    vms[0].Reference(),26		},27	}28	collector, err := m.CreateCollectorForEvents(ctx, filterSpec)29	if err != nil {30		log.Fatal(err)31	}32	ctx, cancel := context.WithCancel(ctx)33	defer cancel()34	for {35		events, err := collector.ReadNextEvents(ctx, 10)36		if err != nil {37			log.Fatal(err)38		}39		for _, event := range events {40			fmt.Println(event)41		}42	}43}44import (

WaitForUpdate

Using AI Code Generation

1import (2func main() {3	fmt.Println("main started")4	WaitForUpdate()5	fmt.Println("main ended")6}7import (8func WaitForUpdate() {9	fmt.Println("WaitForUpdate started")10	time.Sleep(3 * time.Second)11	fmt.Println("WaitForUpdate ended")12}

WaitForUpdate

Using AI Code Generation

1import (2func main() {3        c := make(chan int)4        go func() {5                for i := 0; i < 10; i++ {6                }7        }()8        for {9                select {10                        fmt.Println("Received value:", v)11                case <-time.After(2 * time.Second):12                        fmt.Println("Timeout")13                }14        }15}

WaitForUpdate

Using AI Code Generation

1import (2func main() {3    fmt.Println("Main starts")4    ch := make(chan int)5    obj := NewWaitForUpdate()6    obj.WaitForUpdate(ch)7    time.Sleep(2 * time.Second)8    time.Sleep(2 * time.Second)9    fmt.Println("Main ends")10}

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