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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 generickv
import (
"context"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/ledger/ledgercore"
"github.com/algorand/go-algorand/ledger/store/trackerdb"
"github.com/algorand/go-algorand/protocol"
)
type stateproofReader struct {
kvr KvRead
}
// MakeStateproofReader returns a trackerdb.SpVerificationCtxReader for a KV
func MakeStateproofReader(kvr KvRead) trackerdb.SpVerificationCtxReader {
return &stateproofReader{kvr}
}
// LookupSPContext implements trackerdb.SpVerificationCtxReader
func (r *stateproofReader) LookupSPContext(stateProofLastAttestedRound basics.Round) (*ledgercore.StateProofVerificationContext, error) {
// SQL at the time of writing:
//
// SELECT
// verificationcontext
// FROM stateproofverification
// WHERE lastattestedround=?
key := stateproofKey(stateProofLastAttestedRound)
value, closer, err := r.kvr.Get(key[:])
if err != nil {
return nil, err
}
defer closer.Close()
var vc ledgercore.StateProofVerificationContext
err = protocol.Decode(value, &vc)
if err != nil {
return nil, err
}
return &vc, nil
}
// GetAllSPContexts implements trackerdb.SpVerificationCtxReader
func (r *stateproofReader) GetAllSPContexts(ctx context.Context) ([]ledgercore.StateProofVerificationContext, error) {
// SQL at the time of writing:
//
// SELECT
// verificationContext
// FROM stateProofVerification
// ORDER BY lastattestedround
low, high := stateproofFullRangePrefix()
iter := r.kvr.NewIter(low[:], high[:], false)
defer iter.Close()
results := make([]ledgercore.StateProofVerificationContext, 0)
var value []byte
var err error
for iter.Next() {
// get value for current item in the iterator
value, err = iter.Value()
if err != nil {
return nil, err
}
// decode the value
vc := ledgercore.StateProofVerificationContext{}
err = protocol.Decode(value, &vc)
if err != nil {
return nil, err
}
// add the item to the results
results = append(results, vc)
}
return results, nil
}
// GetAllSPContextsFromCatchpointTbl implements trackerdb.SpVerificationCtxReader
func (r *stateproofReader) GetAllSPContextsFromCatchpointTbl(ctx context.Context) ([]ledgercore.StateProofVerificationContext, error) {
// TODO: catchpoint
return nil, nil
}
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