Golang clientv3.Config類代碼示例

func mustCreateConn() *clientv3.Client {
	endpoint := endpoints[dialTotal%len(endpoints)]
	dialTotal++
	cfg := clientv3.Config{Endpoints: []string{endpoint}}
	if !tls.Empty() {
		cfgtls, err := tls.ClientConfig()
		if err != nil {
			fmt.Fprintf(os.Stderr, "bad tls config: %v\n", err)
			os.Exit(1)
		}
		cfg.TLS = cfgtls
	}

	if len(user) != 0 {
		splitted := strings.SplitN(user, ":", 2)
		if len(splitted) != 2 {
			fmt.Fprintf(os.Stderr, "bad user information: %s\n", user)
			os.Exit(1)
		}

		cfg.Username = splitted[0]
		cfg.Password = splitted[1]
	}

	client, err := clientv3.New(cfg)
	if err != nil {
		fmt.Fprintf(os.Stderr, "dial error: %v\n", err)
		os.Exit(1)
	}
	return client
}

func newClientCfg() (*clientv3.Config, error) {
	// set tls if any one tls option set
	var cfgtls *transport.TLSInfo
	tlsinfo := transport.TLSInfo{}
	if grpcProxyCert != "" {
		tlsinfo.CertFile = grpcProxyCert
		cfgtls = &tlsinfo
	}

	if grpcProxyKey != "" {
		tlsinfo.KeyFile = grpcProxyKey
		cfgtls = &tlsinfo
	}

	if grpcProxyCA != "" {
		tlsinfo.CAFile = grpcProxyCA
		cfgtls = &tlsinfo
	}

	cfg := clientv3.Config{
		Endpoints:   grpcProxyEndpoints,
		DialTimeout: 5 * time.Second,
	}
	if cfgtls != nil {
		clientTLS, err := cfgtls.ClientConfig()
		if err != nil {
			return nil, err
		}
		cfg.TLS = clientTLS
	}

	// TODO: support insecure tls

	return &cfg, nil
}

func newEtcdClient(theEndpoints, certFile, keyFile, caFile string) (*clientv3.Client, error) {
	// Log the etcd endpoint for debugging purposes
	logger.Infof("ETCD Endpoints: %s", theEndpoints)

	// ETCD config
	etcdConfig := clientv3.Config{
		Endpoints:   strings.Split(theEndpoints, ","),
		DialTimeout: dialTimeout,
	}

	// Optionally, configure TLS transport
	if certFile != "" && keyFile != "" && caFile != "" {
		// Load client cert
		tlsInfo := transport.TLSInfo{
			CertFile:      certFile,
			KeyFile:       keyFile,
			TrustedCAFile: caFile,
		}

		// Setup HTTPS client
		tlsConfig, err := tlsInfo.ClientConfig()
		if err != nil {
			return nil, err
		}
		// Add TLS config
		etcdConfig.TLS = tlsConfig
	}

	// ETCD client
	return clientv3.New(etcdConfig)
}

func NewRegistry(opts ...registry.Option) registry.Registry {
	config := clientv3.Config{
		Endpoints: []string{"127.0.0.1:2379"},
	}

	var options registry.Options
	for _, o := range opts {
		o(&options)
	}

	if options.Timeout == 0 {
		options.Timeout = 5 * time.Second
	}

	if options.Secure || options.TLSConfig != nil {
		tlsConfig := options.TLSConfig
		if tlsConfig == nil {
			tlsConfig = &tls.Config{
				InsecureSkipVerify: true,
			}
		}

		config.TLS = tlsConfig
	}

	var cAddrs []string

	for _, addr := range options.Addrs {
		if len(addr) == 0 {
			continue
		}
		cAddrs = append(cAddrs, addr)
	}

	// if we got addrs then we'll update
	if len(cAddrs) > 0 {
		config.Endpoints = cAddrs
	}

	cli, _ := clientv3.New(config)
	e := &etcdv3Registry{
		client:   cli,
		options:  options,
		register: make(map[string]uint64),
		leases:   make(map[string]clientv3.LeaseID),
	}

	return e
}

func (p *ETCDConn) API(auth *Auth3) (*clientv3.Client, error) {
	cfg := clientv3.Config{
		Endpoints: p.endpoints,
		TLS:       p.t,

		// set timeout per request to fail fast when the target endpoint is unavailable
		DialTimeout: dialTimeout,
	}
	if auth != nil {
		cfg.Username = auth.UserName
		cfg.Password = auth.Password
	}

	return clientv3.New(cfg)
}

// NewClientV3 creates a new grpc client connection to the member
func NewClientV3(m *member) (*clientv3.Client, error) {
	if m.grpcAddr == "" {
		return nil, fmt.Errorf("member not configured for grpc")
	}

	cfg := clientv3.Config{
		Endpoints:   []string{m.grpcAddr},
		DialTimeout: 5 * time.Second,
	}

	if m.ClientTLSInfo != nil {
		tls, err := m.ClientTLSInfo.ClientConfig()
		if err != nil {
			return nil, err
		}
		cfg.TLS = tls
	}
	return clientv3.New(cfg)
}

func mustCreateConn() *clientv3.Client {
	endpoint := endpoints[dialTotal%len(endpoints)]
	dialTotal++
	cfg := clientv3.Config{Endpoints: []string{endpoint}}
	if !tls.Empty() {
		cfgtls, err := tls.ClientConfig()
		if err != nil {
			fmt.Fprintf(os.Stderr, "bad tls config: %v\n", err)
			os.Exit(1)
		}
		cfg.TLS = cfgtls
	}

	client, err := clientv3.New(cfg)
	if err != nil {
		fmt.Fprintf(os.Stderr, "dial error: %v\n", err)
		os.Exit(1)
	}
	return client
}

func mustClient(endpoints []string, cert, key, cacert string) *clientv3.Client {
	// set tls if any one tls option set
	var cfgtls *transport.TLSInfo
	tls := transport.TLSInfo{}
	var file string
	if cert != "" {
		tls.CertFile = cert
		cfgtls = &tls
	}

	if key != "" {
		tls.KeyFile = key
		cfgtls = &tls
	}

	if cacert != "" {
		tls.CAFile = file
		cfgtls = &tls
	}

	cfg := clientv3.Config{
		Endpoints:   endpoints,
		DialTimeout: 20 * time.Second,
	}
	if cfgtls != nil {
		clientTLS, err := cfgtls.ClientConfig()
		if err != nil {
			ExitWithError(ExitBadArgs, err)
		}
		cfg.TLS = clientTLS
	}

	client, err := clientv3.New(cfg)
	if err != nil {
		ExitWithError(ExitBadConnection, err)
	}

	return client
}