數(shù)據(jù)結(jié)構(gòu)

為什么這里要相互持有呢?

type Ethereum struct {
    accountManager *accounts.Manager
    APIBackend *EthAPIBackend
}

type EthAPIBackend struct {
    eth *Ethereum
    gpo *gasprice.Oracle
}

1.1. go-ethereum/cmd/geth/consolecmd.go

func localConsole(ctx *cli.Context) error {
    node := makeFullNode(ctx)  //創(chuàng)建Node
    startNode(ctx, node)  //啟動(dòng)Node
}

1.2. go-ethereum/cmd/geth/main.go

func startNode(ctx *cli.Context, stack *node.Node) {
    utils.StartNode(stack)
}

1.3. go-ethereum/cmd/utils/cmd.go

func StartNode(stack *node.Node) {
    if err := stack.Start(); err != nil {
        Fatalf("Error starting protocol stack: %v", err)
    }
}

1.4. go-ethereum/node/node.go

func (n *Node) Start() error {
    services := make(map[reflect.Type]Service)
    for _, constructor := range n.serviceFuncs {
        ctx := &ServiceContext{
            config:         n.config,
            services:       make(map[reflect.Type]Service),
            EventMux:       n.eventmux,
            AccountManager: n.accman,   //Node的accounts.Manager(給到Ethereum)
        }
        service, err := constructor(ctx)      //run serviceFuncs 2.1(create Ethereum)
        services[kind] = service //save servie to services
    }
    if err := n.startRPC(services); err != nil {
        for _, service := range services {
            service.Stop()
        }
        running.Stop()
        return err
    }
}

1.5. go-ethereum/node/node.go

func (n *Node) startRPC(services map[reflect.Type]Service) error {
    apis := n.apis()
    for _, service := range services {
        apis = append(apis, service.APIs()...)  //APIs  service is Ethereum
    }
}

1.6. go-ethereum/eth/backend.go

func (s *Ethereum) APIs() []rpc.API {
    apis := ethapi.GetAPIs(s.APIBackend)   //Ethereum的APIBackend
}

1.7. go-ethereum/internal/ethapi/backend.go

func GetAPIs(apiBackend Backend) []rpc.API {
    {
        Namespace: "personal",
        Version:   "1.0",
        Service:   NewPrivateAccountAPI(apiBackend, nonceLock),  //Ethereum的APIBackend
        Public:    false,
    }
}

1.8. go-ethereum/internal/ethapi/api.go

//創(chuàng)建PrivateAccountAPI, 從Ethereum的EthAPIBackend獲得accounts.Manager

func NewPrivateAccountAPI(b Backend, nonceLock *AddrLocker) *PrivateAccountAPI {
    return &PrivateAccountAPI{
        am:        b.AccountManager(),   //Ethereum的EthAPIBackend的Ethereum的accounts.Manager
        nonceLock: nonceLock,
        b:         b,    //Ethereum的EthAPIBackend
    }
}

1.9. go-ethereum/eth/api_backend.go

func (b *EthAPIBackend) AccountManager() *accounts.Manager {
    return b.eth.AccountManager()
}

2.1 go-ethereum/cmd/utils/flags.go

func(ctx *node.ServiceContext) (node.Service, error) {
    fullNode, err := eth.New(ctx, cfg)      //create Ethereum (is a node.Service)
    if fullNode != nil && cfg.LightServ > 0 {
        ls, _ := les.NewLesServer(fullNode, cfg)
        fullNode.AddLesServer(ls)
    }
  return fullNode, err
}