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// Copyright (C) 2019-2021 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package txnsync
import (
"context"
"sync"
"github.com/algorand/go-algorand/config"
"github.com/algorand/go-algorand/crypto"
"github.com/algorand/go-algorand/logging"
"github.com/algorand/go-algorand/util/execpool"
)
// Service is the transaction sync main service object.
type Service struct {
ctx context.Context
cancelCtx context.CancelFunc
waitGroup sync.WaitGroup
state syncState
}
// MakeTransactionSyncService creates a new Service object
func MakeTransactionSyncService(log logging.Logger, conn NodeConnector, isRelay bool, genesisID string, genesisHash crypto.Digest, cfg config.Local, threadpool execpool.BacklogPool) *Service {
s := &Service{
state: syncState{
node: conn,
log: wrapLogger(log, &cfg),
isRelay: isRelay,
genesisID: genesisID,
genesisHash: genesisHash,
config: cfg,
threadpool: threadpool,
scheduler: makePeerScheduler(),
},
}
s.state.service = s
s.state.xorBuilder.MaxIterations = 10
return s
}
// Start starts the transaction sync
func (s *Service) Start() {
s.ctx, s.cancelCtx = context.WithCancel(context.Background())
s.waitGroup.Add(1)
go s.state.mainloop(s.ctx, &s.waitGroup)
}
// Stop stops the transaction sync
func (s *Service) Stop() {
// cancel the context
s.cancelCtx()
// wait until the mainloop exists.
s.waitGroup.Wait()
// clear the context, as we won't be using it anymore.
s.cancelCtx, s.ctx = nil, nil
}
// GetIncomingMessageHandler returns the message handler.
func (s *Service) GetIncomingMessageHandler() IncomingMessageHandler {
return s.state.asyncIncomingMessageHandler
}
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