Golang strconv.FormatUint函数代码示例

func TestProvideModel(t *testing.T) {
	r := Resource{}
	assertNoErr(db.Save(&r).Error)

	router = gin.New()
	router.GET("/r/:id", res.ProvideModel(func(c *gin.Context, s resources.DBModel) {
		if s == nil {
			t.Fatal("ProvideModel passed a nil DBModel")
		}
		c.String(200, "OK")
	}))

	tests := []struct {
		Code int
		ID   string
	}{
		{200, strconv.FormatUint(uint64(r.ID), 10)},
		// We only have one resource, so this shouldn't exist
		{404, strconv.FormatUint(uint64(r.ID+1), 10)},
		{404, "0"},
		{404, "not-an-id"},
	}

	for _, test := range tests {
		path := fmt.Sprintf("/r/%s", test.ID)
		res := doRequest(t, "GET", path, nil)

		if res.Code != test.Code {
			t.Fatalf("Error finding resource at %s, expected %d, got %d: %v", path, test.Code, res.Code, res)
		}
	}
}

// ExtractTar extracts a tarball (from a io.Reader) into the given directory
// if pwl is not nil, only the paths in the map are extracted.
// If overwrite is true, existing files will be overwritten.
// The extraction is executed by fork/exec()ing a new process. The new process
// needs the CAP_SYS_CHROOT capability.
func ExtractTar(rs io.Reader, dir string, overwrite bool, uidRange *user.UidRange, pwl PathWhitelistMap) error {
	r, w, err := os.Pipe()
	if err != nil {
		return err
	}
	defer w.Close()
	enc := json.NewEncoder(w)
	cmd := mcEntrypoint.Cmd(dir, strconv.FormatBool(overwrite),
		strconv.FormatUint(uint64(uidRange.Shift), 10),
		strconv.FormatUint(uint64(uidRange.Count), 10))
	cmd.ExtraFiles = []*os.File{r}

	cmd.Stdin = rs
	encodeCh := make(chan error)
	go func() {
		encodeCh <- enc.Encode(pwl)
	}()

	out, err := cmd.CombinedOutput()

	// read from blocking encodeCh to release the goroutine
	encodeErr := <-encodeCh
	if err != nil {
		return fmt.Errorf("extracttar error: %v, output: %s", err, out)
	}
	if encodeErr != nil {
		return errwrap.Wrap(errors.New("extracttar failed to json encode filemap"), encodeErr)
	}
	return nil
}

func programMangle(vni uint32, add bool) (err error) {
	var (
		p      = strconv.FormatUint(uint64(vxlanPort), 10)
		c      = fmt.Sprintf("0>>22&[email protected]&0xFFFFFF00=%d", int(vni)<<8)
		m      = strconv.FormatUint(uint64(mark), 10)
		chain  = "OUTPUT"
		rule   = []string{"-p", "udp", "--dport", p, "-m", "u32", "--u32", c, "-j", "MARK", "--set-mark", m}
		a      = "-A"
		action = "install"
	)

	if add == iptables.Exists(iptables.Mangle, chain, rule...) {
		return
	}

	if !add {
		a = "-D"
		action = "remove"
	}

	if err = iptables.RawCombinedOutput(append([]string{"-t", string(iptables.Mangle), a, chain}, rule...)...); err != nil {
		logrus.Warnf("could not %s mangle rule: %v", action, err)
	}

	return
}

func (p Port) PortPathsFor() (base string, path string) {
	root := Device("1").DevicePath()
	prefix := p / portsPerBlock
	base = filepath.Join(root, strconv.FormatUint(uint64(prefix), 10))
	path = filepath.Join(base, strconv.FormatUint(uint64(p), 10))
	return
}

func (a *Auditor) Insert(r *RequestBundle, key, ip string, user User, from, to map[string]interface{}) error {
	changes := []Change{}
	for k, v := range to {
		id, err := r.GetID()
		if err != nil {
			return err
		}
		change := Change{
			ID:        id,
			Key:       key,
			From:      from[k],
			To:        v,
			Field:     k,
			Timestamp: time.Now(),
			IP:        ip,
			User:      user,
		}
		changes = append(changes, change)
	}
	reply := a.client.MultiCall(func(mc *redis.MultiCall) {
		for _, change := range changes {
			user_str := ""
			if change.User.ID != 0 {
				user_str = strconv.FormatUint(change.User.ID, 10)
			}
			mc.Hmset("audit:"+change.Key+":item:"+strconv.FormatUint(change.ID, 10), "from", change.From, "to", change.To, "field", change.Field, "timestamp", change.Timestamp.Format(time.RFC3339), "user", user_str)
			mc.Lpush("audit:"+key, change.ID)
		}
	})
	return reply.Err
}

func monitor() {
	go logStatus()

	if len(*flaghttp) == 0 {
		return
	}
	go hub.run()
	go httpHandler()

	lastQueryCount := qCounter
	for {
		newQueries := qCounter - lastQueryCount
		lastQueryCount = qCounter

		status := map[string]string{}
		status["up"] = strconv.Itoa(int(time.Since(timeStarted).Seconds()))
		status["qs"] = strconv.FormatUint(qCounter, 10)
		status["qps"] = strconv.FormatUint(newQueries, 10)

		message, err := json.Marshal(status)

		if err == nil {
			hub.broadcast <- string(message)
		}
		time.Sleep(1 * time.Second)
	}
}

// encode metadata to context in grpc specific way
func (f *framework) makeGRPCContext(ctx context.Context) context.Context {
	md := metadata.MD{
		"taskID": strconv.FormatUint(f.taskID, 10),
		"epoch":  strconv.FormatUint(f.epoch, 10),
	}
	return metadata.NewContext(ctx, md)
}

func ToStr(value interface{}, args ...int) (s string) {
	switch v := value.(type) {
	case bool:
		s = strconv.FormatBool(v)
	case float32:
		s = strconv.FormatFloat(float64(v), 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 32))
	case float64:
		s = strconv.FormatFloat(v, 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 64))
	case int:
		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
	case int16:
		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
	case int32:
		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
	case int64:
		s = strconv.FormatInt(v, argInt(args).Get(0, 10))
	case uint:
		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
	case uint16:
		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
	case uint32:
		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
	case uint64:
		s = strconv.FormatUint(v, argInt(args).Get(0, 10))
	case string:
		s = v
	default:
		s = fmt.Sprintf("%v", v)
	}
	return s
}

func (r *RequestBundle) storeSubscription(userID uint64, subscription *Subscription) error {
	// start instrumentation
	changes := map[string]interface{}{}
	from := map[string]interface{}{}
	old_user, err := r.GetUser(userID)
	// add repo call to instrumentation
	if err != nil {
		return err
	}
	old_sub := old_user.Subscription
	if old_sub.Expires != subscription.Expires {
		changes["subscription_expires"] = subscription.Expires.Format(time.RFC3339)
		from["subscription_expires"] = old_sub.Expires.Format(time.RFC3339)
	}
	if old_sub.ID != subscription.ID {
		changes["subscription_id"] = subscription.ID
		from["subscription_id"] = old_sub.ID
	}
	reply := r.Repo.client.MultiCall(func(mc *redis.MultiCall) {
		mc.Hmset("users:"+strconv.FormatUint(userID, 10), changes)
		mc.Zadd("users_by_subscription_expiration", subscription.Expires.Unix(), userID)
	})
	// add repo call to instrumentation
	if reply.Err != nil {
		r.Log.Error(reply.Err.Error())
		return reply.Err
	}
	r.AuditMap("users:"+strconv.FormatUint(userID, 10), from, changes)
	// stop instrumentation
	return nil
}

// Heartbeat checks the status of a follower.
func (t *HTTPTransport) Heartbeat(uri *url.URL, term, commitIndex, leaderID uint64) (uint64, error) {
	// Construct URL.
	u := *uri
	u.Path = path.Join(u.Path, "raft/heartbeat")

	// Set URL parameters.
	v := &url.Values{}
	v.Set("term", strconv.FormatUint(term, 10))
	v.Set("commitIndex", strconv.FormatUint(commitIndex, 10))
	v.Set("leaderID", strconv.FormatUint(leaderID, 10))
	u.RawQuery = v.Encode()

	// Send HTTP request.
	resp, err := http.Get(u.String())
	if err != nil {
		return 0, err
	}
	_ = resp.Body.Close()

	// Parse returned index.
	newIndexString := resp.Header.Get("X-Raft-Index")
	newIndex, err := strconv.ParseUint(newIndexString, 10, 64)
	if err != nil {
		return 0, fmt.Errorf("invalid index: %q", newIndexString)
	}

	// Parse returned error.
	if s := resp.Header.Get("X-Raft-Error"); s != "" {
		return newIndex, errors.New(s)
	}

	return newIndex, nil
}

func (c *channel) createSubChannel(direction direction) (libchan.Sender, libchan.Receiver, error) {
	if c.direction == inbound {
		return nil, nil, errors.New("cannot create sub channel of an inbound channel")
	}
	referenceID := c.session.nextReferenceID()
	headers := http.Header{}
	headers.Set("libchan-ref", strconv.FormatUint(referenceID, 10))
	headers.Set("libchan-parent-ref", strconv.FormatUint(c.referenceID, 10))

	stream, streamErr := c.stream.CreateSubStream(headers, false)
	if streamErr != nil {
		return nil, nil, streamErr
	}
	subChannel := &channel{
		referenceID: referenceID,
		parentID:    c.referenceID,
		stream:      stream,
		session:     c.session,
		direction:   direction,
	}

	c.session.channelC.L.Lock()
	c.session.channels[referenceID] = subChannel
	c.session.channelC.L.Unlock()

	return subChannel, subChannel, nil
}

func (vr *VersionRecord) String() string {
	buf := new(bytes.Buffer)
	buf.WriteString(vr.stamp.Format(time.RFC3339Nano))
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.cmd)
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.ra.String())
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.la.String())
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatInt(int64(vr.version), 10))
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatUint(vr.services, 10))
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatInt(vr.sent.Unix(), 10))
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.raddr.String())
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.laddr.String())
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatInt(int64(vr.block), 10))
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatBool(vr.relay))
	buf.WriteString(Delimiter1)
	buf.WriteString(strconv.FormatUint(vr.nonce, 10))
	buf.WriteString(Delimiter1)
	buf.WriteString(vr.agent)

	return buf.String()
}

// Unsubscribe unsubscribes a replica from a topic on the broker.
func (c *Client) Unsubscribe(replicaID, topicID uint64) error {
	var resp *http.Response
	var err error

	u := *c.LeaderURL()
	for {
		u.Path = "/messaging/subscriptions"
		u.RawQuery = url.Values{
			"replicaID": {strconv.FormatUint(replicaID, 10)},
			"topicID":   {strconv.FormatUint(topicID, 10)},
		}.Encode()
		req, _ := http.NewRequest("DELETE", u.String(), nil)
		resp, err = http.DefaultClient.Do(req)
		if err != nil {
			return err
		}
		defer func() { _ = resp.Body.Close() }()

		// If a temporary redirect occurs then update the leader and retry.
		// If a non-204 status is returned then an error occurred.
		if resp.StatusCode == http.StatusTemporaryRedirect {
			redirectURL, err := url.Parse(resp.Header.Get("Location"))
			if err != nil {
				return fmt.Errorf("bad redirect: %s", resp.Header.Get("Location"))
			}
			u = *redirectURL
			continue
		} else if resp.StatusCode != http.StatusNoContent {
			return errors.New(resp.Header.Get("X-Broker-Error"))
		}
		break
	}

	return nil
}

func DeviceInodeString(dev, ino uint64) string {
	if dev == 0 && ino == 0 {
		return ""
	} else {
		return strconv.FormatUint(dev, 10) + ":" + strconv.FormatUint(ino, 10)
	}
}

// ReadFrom streams the log from a leader.
func (t *HTTPTransport) ReadFrom(uri *url.URL, id, term, index uint64) (io.ReadCloser, error) {
	// Construct URL.
	u := *uri
	u.Path = path.Join(u.Path, "raft/stream")

	// Set URL parameters.
	v := &url.Values{}
	v.Set("id", strconv.FormatUint(id, 10))
	v.Set("term", strconv.FormatUint(term, 10))
	v.Set("index", strconv.FormatUint(index, 10))
	u.RawQuery = v.Encode()

	// Send HTTP request.
	resp, err := http.Get(u.String())
	if err != nil {
		return nil, err
	}

	// Parse returned error.
	if s := resp.Header.Get("X-Raft-Error"); s != "" {
		_ = resp.Body.Close()
		return nil, errors.New(s)
	}

	return resp.Body, nil
}