From 3410d2bf702bb3308d7bca611780141dd1311efa Mon Sep 17 00:00:00 2001 From: Determinant Date: Wed, 16 Sep 2020 18:22:08 -0400 Subject: finish chaning the files --- node/service.go | 135 -------------------------------------------------------- 1 file changed, 135 deletions(-) delete mode 100644 node/service.go (limited to 'node/service.go') diff --git a/node/service.go b/node/service.go deleted file mode 100644 index 7b3a4ff..0000000 --- a/node/service.go +++ /dev/null @@ -1,135 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package node - -import ( - "path/filepath" - "reflect" - - "github.com/ava-labs/coreth/accounts" - "github.com/ava-labs/coreth/core/rawdb" - "github.com/ava-labs/coreth/rpc" - "github.com/ava-labs/go-ethereum/ethdb" - "github.com/ava-labs/go-ethereum/event" - "github.com/ava-labs/go-ethereum/p2p" -) - -// ServiceContext is a collection of service independent options inherited from -// the protocol stack, that is passed to all constructors to be optionally used; -// as well as utility methods to operate on the service environment. -type ServiceContext struct { - config *Config - services map[reflect.Type]Service // Index of the already constructed services - EventMux *event.TypeMux // Event multiplexer used for decoupled notifications - AccountManager *accounts.Manager // Account manager created by the node. -} - -// OpenDatabase opens an existing database with the given name (or creates one -// if no previous can be found) from within the node's data directory. If the -// node is an ephemeral one, a memory database is returned. -func (ctx *ServiceContext) OpenDatabase(name string, cache int, handles int, namespace string) (ethdb.Database, error) { - if ctx.config.DataDir == "" { - return rawdb.NewMemoryDatabase(), nil - } - return rawdb.NewLevelDBDatabase(ctx.config.ResolvePath(name), cache, handles, namespace) -} - -// OpenDatabaseWithFreezer opens an existing database with the given name (or -// creates one if no previous can be found) from within the node's data directory, -// also attaching a chain freezer to it that moves ancient chain data from the -// database to immutable append-only files. If the node is an ephemeral one, a -// memory database is returned. -func (ctx *ServiceContext) OpenDatabaseWithFreezer(name string, cache int, handles int, freezer string, namespace string) (ethdb.Database, error) { - if ctx.config.DataDir == "" { - return rawdb.NewMemoryDatabase(), nil - } - root := ctx.config.ResolvePath(name) - - switch { - case freezer == "": - freezer = filepath.Join(root, "ancient") - case !filepath.IsAbs(freezer): - freezer = ctx.config.ResolvePath(freezer) - } - return rawdb.NewLevelDBDatabaseWithFreezer(root, cache, handles, freezer, namespace) -} - -// ResolvePath resolves a user path into the data directory if that was relative -// and if the user actually uses persistent storage. It will return an empty string -// for emphemeral storage and the user's own input for absolute paths. -func (ctx *ServiceContext) ResolvePath(path string) string { - return ctx.config.ResolvePath(path) -} - -// Service retrieves a currently running service registered of a specific type. -func (ctx *ServiceContext) Service(service interface{}) error { - element := reflect.ValueOf(service).Elem() - if running, ok := ctx.services[element.Type()]; ok { - element.Set(reflect.ValueOf(running)) - return nil - } - return ErrServiceUnknown -} - -// ExtRPCEnabled returns the indicator whether node enables the external -// RPC(http, ws or graphql). -func (ctx *ServiceContext) ExtRPCEnabled() bool { - return ctx.config.ExtRPCEnabled() -} - -func NewServiceContext(cfg *Config, mux *event.TypeMux) (ServiceContext, string, error) { - if cfg == nil { - cfg = &Config{} - } - am, ep, err := makeAccountManager(cfg) - return ServiceContext{ - config: cfg, - services: make(map[reflect.Type]Service), - EventMux: mux, - AccountManager: am, - }, ep, err -} - -// ServiceConstructor is the function signature of the constructors needed to be -// registered for service instantiation. -type ServiceConstructor func(ctx *ServiceContext) (Service, error) - -// Service is an individual protocol that can be registered into a node. -// -// Notes: -// -// • Service life-cycle management is delegated to the node. The service is allowed to -// initialize itself upon creation, but no goroutines should be spun up outside of the -// Start method. -// -// • Restart logic is not required as the node will create a fresh instance -// every time a service is started. -type Service interface { - // Protocols retrieves the P2P protocols the service wishes to start. - Protocols() []p2p.Protocol - - // APIs retrieves the list of RPC descriptors the service provides - APIs() []rpc.API - - // Start is called after all services have been constructed and the networking - // layer was also initialized to spawn any goroutines required by the service. - Start(server *p2p.Server) error - - // Stop terminates all goroutines belonging to the service, blocking until they - // are all terminated. - Stop() error -} -- cgit v1.2.3-70-g09d2