Esempio n. 1
0
func getRegistryClient() (client.API, error) {
	var dial func(string, string) (net.Conn, error)
	tun := getTunnelFlag()
	if tun != "" {
		sshClient, err := ssh.NewSSHClient(globalFlags.SSHUserName, tun, getChecker(), false, getSSHTimeoutFlag())
		if err != nil {
			return nil, fmt.Errorf("failed initializing SSH client: %v", err)
		}

		dial = func(network, addr string) (net.Conn, error) {
			tcpaddr, err := net.ResolveTCPAddr(network, addr)
			if err != nil {
				return nil, err
			}
			return sshClient.DialTCP(network, nil, tcpaddr)
		}
	}

	tlsConfig, err := pkg.ReadTLSConfigFiles(globalFlags.CAFile, globalFlags.CertFile, globalFlags.KeyFile)
	if err != nil {
		return nil, err
	}

	trans := &http.Transport{
		Dial:            dial,
		TLSClientConfig: tlsConfig,
	}

	eCfg := etcd.Config{
		Endpoints: strings.Split(globalFlags.Endpoint, ","),
		Transport: trans,
	}

	eClient, err := etcd.New(eCfg)
	if err != nil {
		return nil, err
	}

	kAPI := etcd.NewKeysAPI(eClient)
	reg := registry.NewEtcdRegistry(kAPI, globalFlags.EtcdKeyPrefix, getRequestTimeoutFlag())

	if msg, ok := checkVersion(reg); !ok {
		stderr(msg)
	}

	return &client.RegistryClient{Registry: reg}, nil
}
Esempio n. 2
0
func NewFleetClient() (client.API, error) {
	etcdClient, err := etcdInternal.New(
		etcdInternal.Config{Endpoints: []string{os.Getenv("ETCD_URL")}},
	)

	if err != nil {
		return nil, err
	}

	kAPI := etcdInternal.NewKeysAPI(etcdClient)
	reg := registry.NewEtcdRegistry(
		kAPI,
		registry.DefaultKeyPrefix,
		5*time.Second,
	)

	return &client.RegistryClient{Registry: reg}, nil
}
func getETCDClient(driverEndpoint string, etcdKeyPrefix string) (client.API, error) {
	log.Printf("Using ETCD connection for requests")

	trans := &http.Transport{}

	eCfg := etcd.Config{
		Endpoints: strings.Split(driverEndpoint, ","),
		Transport: trans,
	}

	eClient, err := etcd.New(eCfg)
	if err != nil {
		return nil, err
	}

	keysAPI := etcd.NewKeysAPI(eClient)
	reg := registry.NewEtcdRegistry(keysAPI, etcdKeyPrefix, defaultTimeout)

	if msg, ok := checkVersion(reg); !ok {
		log.Printf(msg)
	}

	return &client.RegistryClient{Registry: reg}, nil
}
Esempio n. 4
0
func New(cfg config.Config) (*Server, error) {
	agentTTL, err := time.ParseDuration(cfg.AgentTTL)
	if err != nil {
		return nil, err
	}

	mgr, err := systemd.NewSystemdUnitManager(systemd.DefaultUnitsDirectory)
	if err != nil {
		return nil, err
	}

	mach, err := newMachineFromConfig(cfg, mgr)
	if err != nil {
		return nil, err
	}

	tlsConfig, err := pkg.ReadTLSConfigFiles(cfg.EtcdCAFile, cfg.EtcdCertFile, cfg.EtcdKeyFile)
	if err != nil {
		return nil, err
	}

	eCfg := etcd.Config{
		Transport: &http.Transport{TLSClientConfig: tlsConfig},
		Endpoints: cfg.EtcdServers,
	}
	eClient, err := etcd.New(eCfg)
	if err != nil {
		return nil, err
	}

	etcdRequestTimeout := time.Duration(cfg.EtcdRequestTimeout*1000) * time.Millisecond
	kAPI := etcd.NewKeysAPI(eClient)
	reg := registry.NewEtcdRegistry(kAPI, cfg.EtcdKeyPrefix, etcdRequestTimeout)

	pub := agent.NewUnitStatePublisher(reg, mach, agentTTL)
	gen := unit.NewUnitStateGenerator(mgr)

	a := agent.New(mgr, gen, reg, mach, agentTTL)

	var rStream pkg.EventStream
	if !cfg.DisableWatches {
		rStream = registry.NewEtcdEventStream(kAPI, cfg.EtcdKeyPrefix)
	}
	lManager := lease.NewEtcdLeaseManager(kAPI, cfg.EtcdKeyPrefix, etcdRequestTimeout)

	ar := agent.NewReconciler(reg, rStream)

	e := engine.New(reg, lManager, rStream, mach)

	listeners, err := activation.Listeners(false)
	if err != nil {
		return nil, err
	}

	hrt := heart.New(reg, mach)
	mon := heart.NewMonitor(agentTTL)

	apiServer := api.NewServer(listeners, api.NewServeMux(reg, cfg.TokenLimit))
	apiServer.Serve()

	eIval := time.Duration(cfg.EngineReconcileInterval*1000) * time.Millisecond

	srv := Server{
		agent:       a,
		aReconciler: ar,
		usGen:       gen,
		usPub:       pub,
		engine:      e,
		mach:        mach,
		hrt:         hrt,
		mon:         mon,
		api:         apiServer,
		stop:        nil,
		engineReconcileInterval: eIval,
		disableEngine:           cfg.DisableEngine,
	}

	return &srv, nil
}
Esempio n. 5
0
func New(cfg config.Config) (*Server, error) {
	agentTTL, err := time.ParseDuration(cfg.AgentTTL)
	if err != nil {
		return nil, err
	}

	mgr, err := systemd.NewSystemdUnitManager(systemd.DefaultUnitsDirectory)
	if err != nil {
		return nil, err
	}

	mach, err := newMachineFromConfig(cfg, mgr)
	if err != nil {
		return nil, err
	}

	tlsConfig, err := pkg.ReadTLSConfigFiles(cfg.EtcdCAFile, cfg.EtcdCertFile, cfg.EtcdKeyFile)
	if err != nil {
		return nil, err
	}
	etcdRequestTimeout := time.Duration(cfg.EtcdRequestTimeout*1000) * time.Millisecond
	// set a per server request timeout that is the global request timeout divided by the number of quorum nodes (i.e. 3 out of 5)
	// this ensures that the the retry logic in etcd can try at least 3 servers before the global timeout fires and cancels the entire request
	quorumCount := (len(cfg.EtcdServers) / 2) + 1
	etcdRequestPerServerTimeout := etcdRequestTimeout
	if quorumCount > 1 {
		etcdRequestPerServerTimeout = time.Duration(int64(etcdRequestTimeout) / int64(quorumCount))
	}
	log.Infof("Etcd endpoints: %v", strings.Join(cfg.EtcdServers, ","))
	log.Infof("Setting global request timeout of %v and per server request timeout of %v using a quorum count of %v", etcdRequestTimeout, etcdRequestPerServerTimeout, quorumCount)

	eCfg := etcd.Config{
		Transport:               &http.Transport{TLSClientConfig: tlsConfig},
		Endpoints:               cfg.EtcdServers,
		HeaderTimeoutPerRequest: etcdRequestPerServerTimeout,
	}
	eClient, err := etcd.New(eCfg)
	if err != nil {
		return nil, err
	}

	kAPI := etcd.NewKeysAPI(eClient)
	reg := registry.NewEtcdRegistry(kAPI, cfg.EtcdKeyPrefix, etcdRequestTimeout)

	pub := agent.NewUnitStatePublisher(reg, mach, agentTTL)
	gen := unit.NewUnitStateGenerator(mgr)

	a := agent.New(mgr, gen, reg, mach, agentTTL)

	rStream := registry.NewEtcdEventStream(kAPI, cfg.EtcdKeyPrefix)
	lManager := lease.NewEtcdLeaseManager(kAPI, cfg.EtcdKeyPrefix, etcdRequestTimeout)

	ar := agent.NewReconciler(reg, rStream)

	e := engine.New(reg, lManager, rStream, mach)

	listeners, err := activation.Listeners(false)
	if err != nil {
		return nil, err
	}

	hrt := heart.New(reg, mach)
	mon := heart.NewMonitor(agentTTL)

	apiServer := api.NewServer(listeners, api.NewServeMux(reg))
	apiServer.Serve()

	eIval := time.Duration(cfg.EngineReconcileInterval*1000) * time.Millisecond

	srv := Server{
		agent:       a,
		aReconciler: ar,
		usGen:       gen,
		usPub:       pub,
		engine:      e,
		mach:        mach,
		hrt:         hrt,
		mon:         mon,
		api:         apiServer,
		stop:        nil,
		engineReconcileInterval: eIval,
	}

	return &srv, nil
}