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// Copyright (C) 2019-2023 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 dualdriver
import (
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/ledger/ledgercore"
"github.com/algorand/go-algorand/ledger/store/trackerdb"
"github.com/google/go-cmp/cmp"
)
type onlineAccountsReader struct {
primary trackerdb.OnlineAccountsReader
secondary trackerdb.OnlineAccountsReader
}
// Close implements trackerdb.OnlineAccountsReader
func (oar *onlineAccountsReader) Close() {
oar.primary.Close()
oar.secondary.Close()
}
// LookupOnline implements trackerdb.OnlineAccountsReader
func (oar *onlineAccountsReader) LookupOnline(addr basics.Address, rnd basics.Round) (data trackerdb.PersistedOnlineAccountData, err error) {
dataP, errP := oar.primary.LookupOnline(addr, rnd)
dataS, errS := oar.secondary.LookupOnline(addr, rnd)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// coalesce refs
ref, err := coalesceOnlineAccountRefs(dataP.Ref, dataS.Ref)
if err != nil {
return
}
// update ref in results
// Note: this is safe because the refs are engine specific
dataP.Ref = ref
dataS.Ref = ref
// check results match
if dataP != dataS {
err = ErrInconsistentResult
return
}
// return primary results
return dataP, nil
}
// LookupOnlineHistory implements trackerdb.OnlineAccountsReader
func (oar *onlineAccountsReader) LookupOnlineHistory(addr basics.Address) (result []trackerdb.PersistedOnlineAccountData, rnd basics.Round, err error) {
resultP, rndP, errP := oar.primary.LookupOnlineHistory(addr)
resultS, rndS, errS := oar.secondary.LookupOnlineHistory(addr)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// coalesce refs
if len(resultP) != len(resultS) {
err = ErrInconsistentResult
return
}
var ref trackerdb.OnlineAccountRef
for i := range resultP {
ref, err = coalesceOnlineAccountRefs(resultP[i].Ref, resultS[i].Ref)
if err != nil {
return result, rnd, err
}
// update ref in results
resultP[i].Ref = ref
resultS[i].Ref = ref
}
// check results match
if !cmp.Equal(resultP, resultS, allowAllUnexported) {
err = ErrInconsistentResult
return
}
if rndP != rndS {
err = ErrInconsistentResult
return
}
// return primary results
return resultP, rndP, nil
}
// LookupOnlineRoundParams implements trackerdb.OnlineAccountsReader
func (oar *onlineAccountsReader) LookupOnlineRoundParams(rnd basics.Round) (onlineRoundParamsData ledgercore.OnlineRoundParamsData, err error) {
resultP, errP := oar.primary.LookupOnlineRoundParams(rnd)
resultS, errS := oar.secondary.LookupOnlineRoundParams(rnd)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// check results match
if !cmp.Equal(resultP, resultS, allowAllUnexported) {
err = ErrInconsistentResult
return
}
// return primary results
return resultP, nil
}
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