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// Copyright (C) 2019-2024 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/store/trackerdb"
"github.com/google/go-cmp/cmp"
)
type accountsReader struct {
primary trackerdb.AccountsReader
secondary trackerdb.AccountsReader
}
// Close implements trackerdb.AccountsReader
func (ar *accountsReader) Close() {
ar.primary.Close()
ar.secondary.Close()
}
// LookupAccount implements trackerdb.AccountsReader
func (ar *accountsReader) LookupAccount(addr basics.Address) (data trackerdb.PersistedAccountData, err error) {
dataP, errP := ar.primary.LookupAccount(addr)
dataS, errS := ar.secondary.LookupAccount(addr)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// coalesce refs
ref, err := coalesceAccountRefs(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
}
// LookupAllResources implements trackerdb.AccountsReader
func (ar *accountsReader) LookupAllResources(addr basics.Address) (data []trackerdb.PersistedResourcesData, rnd basics.Round, err error) {
dataP, rndP, errP := ar.primary.LookupAllResources(addr)
dataS, rndS, errS := ar.secondary.LookupAllResources(addr)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// coalesce refs
if len(dataP) != len(dataS) {
err = ErrInconsistentResult
return
}
var ref trackerdb.AccountRef
for i := range dataP {
ref, err = coalesceAccountRefs(dataP[i].AcctRef, dataS[i].AcctRef)
if err != nil {
return data, rnd, err
}
// update ref in results
dataP[i].AcctRef = ref
dataS[i].AcctRef = ref
}
// check results match
if !cmp.Equal(dataP, dataS, allowAllUnexported) {
err = ErrInconsistentResult
return
}
if rndP != rndS {
err = ErrInconsistentResult
return
}
// return primary results
return dataP, rndP, nil
}
// LookupCreator implements trackerdb.AccountsReader
func (ar *accountsReader) LookupCreator(cidx basics.CreatableIndex, ctype basics.CreatableType) (addr basics.Address, ok bool, dbRound basics.Round, err error) {
addrP, okP, dbRoundP, errP := ar.primary.LookupCreator(cidx, ctype)
addrS, okS, dbRoundS, errS := ar.secondary.LookupCreator(cidx, ctype)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// check results match
if addrP != addrS {
err = ErrInconsistentResult
return
}
if okP != okS {
err = ErrInconsistentResult
return
}
if dbRoundP != dbRoundS {
err = ErrInconsistentResult
return
}
// return primary results
return addrP, okP, dbRoundP, nil
}
// LookupKeyValue implements trackerdb.AccountsReader
func (ar *accountsReader) LookupKeyValue(key string) (pv trackerdb.PersistedKVData, err error) {
pvP, errP := ar.primary.LookupKeyValue(key)
pvS, errS := ar.secondary.LookupKeyValue(key)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// check results match
if !cmp.Equal(pvP, pvS) {
err = ErrInconsistentResult
return
}
// return primary results
return pvP, nil
}
// LookupKeysByPrefix implements trackerdb.AccountsReader
func (ar *accountsReader) LookupKeysByPrefix(prefix string, maxKeyNum uint64, results map[string]bool, resultCount uint64) (round basics.Round, err error) {
roundP, errP := ar.primary.LookupKeysByPrefix(prefix, maxKeyNum, results, resultCount)
roundS, errS := ar.secondary.LookupKeysByPrefix(prefix, maxKeyNum, results, resultCount)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// check results match
if roundP != roundS {
err = ErrInconsistentResult
return
}
// return primary results
return roundP, nil
}
// LookupResources implements trackerdb.AccountsReader
func (ar *accountsReader) LookupResources(addr basics.Address, aidx basics.CreatableIndex, ctype basics.CreatableType) (data trackerdb.PersistedResourcesData, err error) {
dataP, errP := ar.primary.LookupResources(addr, aidx, ctype)
dataS, errS := ar.secondary.LookupResources(addr, aidx, ctype)
// coalesce errors
err = coalesceErrors(errP, errS)
if err != nil {
return
}
// coalesce refs
ref, err := coalesceAccountRefs(dataP.AcctRef, dataS.AcctRef)
if err != nil {
return
}
// update ref in results
// Note: this is safe because the refs are engine specific
dataP.AcctRef = ref
dataS.AcctRef = ref
// check results match
if !cmp.Equal(dataP, dataS, allowAllUnexported) {
err = ErrInconsistentResult
return
}
// return primary results
return dataP, nil
}
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