Golang Node.OpenAcc方法代码示例

/**
 * Parse a serialized RegNode, returning one with an open acceptor.
 */
func ParseRegNodeFromStrings(ss []string) (
	rn *RegNode, rest []string, err error) {

	var (
		line   string
		node   *xn.Node
		ckPriv *rsa.PrivateKey
		skPriv *rsa.PrivateKey
	)
	rest = ss
	line, err = xc.NextNBLine(&rest)
	if (err == nil) && (line != "regNode {") {
		err = MissingRegNodeLine
	} else {
		node, rest, err = xn.ParseFromStrings(rest)
		if err == nil {
			line, err = xc.NextNBLine(&rest)
			if err == nil {
				parts := strings.Split(line, ": ")
				if parts[0] == "ckPriv" && parts[1] == "-----BEGIN -----" {
					ckPriv, err = xn.ExpectRSAPrivateKey(&rest)
				} else {
					err = MissingPrivateKey
				}
				if err == nil {
					line, err = xc.NextNBLine(&rest)
					if err == nil {
						parts := strings.Split(line, ": ")
						if parts[0] == "skPriv" && parts[1] == "-----BEGIN -----" {
							skPriv, err = xn.ExpectRSAPrivateKey(&rest)
						} else {
							err = MissingPrivateKey
						}
						if err == nil {
							line, err = xc.NextNBLine(&rest)
							if (err == nil) && (line != "}") {
								err = MissingClosingBrace
							}
							if err == nil {
								// Try to open the acceptor.
								err = node.OpenAcc()
								if err == nil {
									rn, err = NewRegNode(node, ckPriv, skPriv)
								}
							}
						}
					}
				}
			}
		}
	}
	return
}

func NewEphServer() (ms *EphServer, err error) {

	// Create an XLattice node with quasi-random parameters including
	// low-quality keys and an endPoint in 127.0.0.1, localhost.
	var (
		ckPriv, skPriv *rsa.PrivateKey
		rn             *RegNode
		ep             *xt.TcpEndPoint
		node           *xn.Node
		reg            *Registry
		server         *RegServer
	)

	rng := xr.MakeSimpleRNG()
	name := rng.NextFileName(16)
	idBuf := make([]byte, xu.SHA1_BIN_LEN)
	rng.NextBytes(idBuf)
	lfs := "tmp/" + hex.EncodeToString(idBuf)
	id, err := xi.New(nil)
	if err == nil {
		// XXX cheap keys, too weak for any serious use
		ckPriv, err = rsa.GenerateKey(rand.Reader, 1024)
		if err == nil {
			skPriv, err = rsa.GenerateKey(rand.Reader, 1024)
		}
	}
	if err == nil {
		ep, err = xt.NewTcpEndPoint("127.0.0.1:0")
		eps := []xt.EndPointI{ep}
		if err == nil {
			node, err = xn.New(name, id, lfs, ckPriv, skPriv, nil, eps, nil)
			if err == nil {
				err = node.OpenAcc() // so acceptors are now live
				if err == nil {
					rn, err = NewRegNode(node, ckPriv, skPriv)
					if err == nil {
						// DEBUG
						if rn == nil {
							fmt.Println("regNode is NIL!\n")
						} else {
							fmt.Printf("eph server listening on %s\n",
								rn.GetAcceptor(0).String())
						}
						// END
						// a registry with no clusters and no logger
						opt := &RegOptions{
							EndPoint:       ep, // not used
							Ephemeral:      true,
							GlobalEndPoint: node.GetEndPoint(0),
							Lfs:            lfs, // redundant (is in node's BaseNode)
							Logger:         nil,
							K:              DEFAULT_K,
							M:              DEFAULT_M,
						}
						reg, err = NewRegistry(nil, rn, opt)
						if err == nil {
							server, err = NewRegServer(reg, true, 1)
							if err == nil {
								ms = &EphServer{
									acc:    rn.GetAcceptor(0),
									Server: server,
								}
							}
						}
					}
				}
			}
		}
	}
	return
}

func setup(opt *reg.RegOptions) (rs *reg.RegServer, err error) {
	// If LFS/.xlattice/reg.config exists, we load that.  Otherwise we
	// create a node.  In either case we force the node to listen on
	// the designated port

	var (
		e                []xt.EndPointI
		node             *xn.Node
		pathToConfigFile string
		rn               *reg.RegNode
		ckPriv, skPriv   *rsa.PrivateKey
	)
	logger := opt.Logger
	verbose := opt.Verbose

	greetings := fmt.Sprintf("xlReg v%s %s start run\n",
		reg.VERSION, reg.VERSION_DATE)
	if verbose {
		fmt.Print(greetings)
	}
	logger.Print(greetings)

	pathToConfigFile = path.Join(path.Join(opt.Lfs, ".xlattice"), "reg.config")
	found, err := xf.PathExists(pathToConfigFile)
	if err == nil {
		if found {
			logger.Printf("Loading existing reg config from %s\n",
				pathToConfigFile)
			// The registry node already exists.  Parse it and we are done.
			var data []byte
			data, err = ioutil.ReadFile(pathToConfigFile)
			if err == nil {
				rn, _, err = reg.ParseRegNode(string(data))
			}
		} else {
			logger.Println("No config file found, creating new registry.")
			// We need to create a registry node from scratch.
			nodeID, _ := xi.New(nil)
			ep, err := xt.NewTcpEndPoint(opt.Address + ":" + opt.Port)
			if err == nil {
				e = []xt.EndPointI{ep}
				ckPriv, err = rsa.GenerateKey(rand.Reader, 2048)
				if err == nil {
					skPriv, err = rsa.GenerateKey(rand.Reader, 2048)
				}
				if err == nil {
					node, err = xn.New("xlReg", nodeID, opt.Lfs, ckPriv, skPriv,
						nil, e, nil)
					if err == nil {
						node.OpenAcc() // XXX needs a complementary close
						if err == nil {
							// DEBUG
							fmt.Printf("XLattice node successfully created\n")
							fmt.Printf("  listening on %s\n", ep.String())
							// END
							rn, err = reg.NewRegNode(node, ckPriv, skPriv)
							if err == nil {
								// DEBUG
								fmt.Printf("regNode successfully created\n")
								// END
								err = xf.MkdirsToFile(pathToConfigFile, 0700)
								if err == nil {
									err = ioutil.WriteFile(pathToConfigFile,
										[]byte(rn.String()), 0400)
									// DEBUG
								} else {
									fmt.Printf("error writing config file: %v\n",
										err.Error())
								}
								// END --------------

								// DEBUG
							} else {
								fmt.Printf("error creating regNode: %v\n",
									err.Error())
								// END
							}
						}
					}
				}
			}
		}
	}
	if err == nil {
		var r *reg.Registry
		r, err = reg.NewRegistry(nil, // nil = clusters so far
			rn, opt) // regNode, options
		if err == nil {
			logger.Printf("Registry name: %s\n", rn.GetName())
			logger.Printf("         ID:   %s\n", rn.GetNodeID().String())
		}
		if err == nil {
			var verbosity int
			if opt.Verbose {
				verbosity++
			}
			rs, err = reg.NewRegServer(r, opt.Testing, verbosity)
		}
	}
	if err != nil {
//.........这里部分代码省略.........