102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
// VulcanizeDB
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// Copyright © 2022 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package leveldb_ethdb_rpc
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import (
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"sync"
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ethnode "github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/rpc"
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log "github.com/sirupsen/logrus"
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)
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// Server is the top level interface for exposing a remote RPC wrapper around levelDB ethdb.Database
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type Server interface {
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ethnode.Lifecycle
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APIs() []rpc.API
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Protocols() []p2p.Protocol
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Serve(wg *sync.WaitGroup)
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}
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// Service is the underlying struct for the watcher
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type Service struct {
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wg *sync.WaitGroup
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backend *LevelDBBackend
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quitChan chan struct{}
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}
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// NewServer creates a new Server using an underlying Service struct
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func NewServer(conf *Config) (Server, error) {
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sap := new(Service)
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sap.quitChan = make(chan struct{})
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var err error
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sap.backend, err = NewLevelDBBackend(conf)
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return sap, err
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}
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// Protocols exports the services p2p protocols, this service has none
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func (sap *Service) Protocols() []p2p.Protocol {
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return []p2p.Protocol{}
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}
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// APIs returns the RPC descriptors the watcher service offers
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func (sap *Service) APIs() []rpc.API {
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return []rpc.API{
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{
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Namespace: APIName,
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Version: APIVersion,
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Service: NewPublicLevelDBAPI(sap.backend),
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Public: true,
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},
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}
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}
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// Serve is the listening loop
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func (sap *Service) Serve(wg *sync.WaitGroup) {
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sap.wg = wg
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go func() {
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wg.Add(1)
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defer wg.Done()
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for {
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select {
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case <-sap.quitChan:
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log.Info("quiting the levelDB RPC server process")
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return
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}
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}
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}()
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log.Info("levelDB RPC server process successfully spun up")
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}
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// Start is used to begin the service
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// This is mostly just to satisfy the node.Service interface
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func (sap *Service) Start() error {
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log.Info("starting levelDB RPC server")
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wg := new(sync.WaitGroup)
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sap.Serve(wg)
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return nil
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}
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// Stop is used to close down the service
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// This is mostly just to satisfy the node.Service interface
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func (sap *Service) Stop() error {
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log.Infof("stopping levelDB RPC server")
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close(sap.quitChan)
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return nil
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}
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