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c0c01612e9
This PR significantly changes the APIs for instantiating Ethereum nodes in a Go program. The new APIs are not backwards-compatible, but we feel that this is made up for by the much simpler way of registering services on node.Node. You can find more information and rationale in the design document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775. There is also a new feature in Node's Go API: it is now possible to register arbitrary handlers on the user-facing HTTP server. In geth, this facility is used to enable GraphQL. There is a single minor change relevant for geth users in this PR: The GraphQL API is no longer available separately from the JSON-RPC HTTP server. If you want GraphQL, you need to enable it using the ./geth --http --graphql flag combination. The --graphql.port and --graphql.addr flags are no longer available.
114 lines
2.7 KiB
Go
114 lines
2.7 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Contains a batch of utility type declarations used by the tests. As the node
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// operates on unique types, a lot of them are needed to check various features.
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package node
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import (
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/rpc"
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)
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// NoopLifecycle is a trivial implementation of the Service interface.
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type NoopLifecycle struct{}
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func (s *NoopLifecycle) Start() error { return nil }
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func (s *NoopLifecycle) Stop() error { return nil }
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func NewNoop() *Noop {
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noop := new(Noop)
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return noop
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}
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// Set of services all wrapping the base NoopLifecycle resulting in the same method
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// signatures but different outer types.
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type Noop struct{ NoopLifecycle }
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// InstrumentedService is an implementation of Lifecycle for which all interface
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// methods can be instrumented both return value as well as event hook wise.
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type InstrumentedService struct {
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start error
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stop error
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startHook func()
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stopHook func()
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protocols []p2p.Protocol
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}
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func (s *InstrumentedService) Start() error {
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if s.startHook != nil {
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s.startHook()
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}
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return s.start
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}
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func (s *InstrumentedService) Stop() error {
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if s.stopHook != nil {
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s.stopHook()
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}
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return s.stop
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}
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type FullService struct{}
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func NewFullService(stack *Node) (*FullService, error) {
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fs := new(FullService)
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stack.RegisterProtocols(fs.Protocols())
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stack.RegisterAPIs(fs.APIs())
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stack.RegisterLifecycle(fs)
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return fs, nil
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}
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func (f *FullService) Start() error { return nil }
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func (f *FullService) Stop() error { return nil }
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func (f *FullService) Protocols() []p2p.Protocol {
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return []p2p.Protocol{
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p2p.Protocol{
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Name: "test1",
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Version: uint(1),
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},
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p2p.Protocol{
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Name: "test2",
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Version: uint(2),
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},
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}
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}
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func (f *FullService) APIs() []rpc.API {
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return []rpc.API{
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{
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Namespace: "admin",
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Version: "1.0",
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},
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{
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Namespace: "debug",
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Version: "1.0",
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Public: true,
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},
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{
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Namespace: "net",
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Version: "1.0",
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Public: true,
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},
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}
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}
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