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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package v13
import (
commonerrors "github.com/hyperledger/fabric/common/errors"
"github.com/hyperledger/fabric/protos/common"
"github.com/hyperledger/fabric/protos/peer"
)
// StateBasedValidator is used to validate a transaction that performs changes to
// KVS keys that use key-level endorsement policies. This interface is supposed to be called
// by any validator plugin (including the default validator plugin). The functions of this
// interface are to be called as follows:
// 1) the validator plugin calls PreValidate (even before determining whether the transaction is
// valid)
// 2) the validator plugin calls Validate before or after having determined the validity of the
// transaction based on other considerations
// 3) the validator plugin determines the overall validity of the transaction and then calls
// PostValidate
type StateBasedValidator interface {
// PreValidate sets the internal data structures of the validator needed before validation
// of transaction `txNum` in the specified block can proceed
PreValidate(txNum uint64, block *common.Block)
// Validate determines whether the transaction on the specified channel at the specified height
// is valid according to its chaincode-level endorsement policy and any key-level validation
// parametres
Validate(cc string, blockNum, txNum uint64, rwset, prp, ep []byte, endorsements []*peer.Endorsement) commonerrors.TxValidationError
// PostValidate sets the internal data structures of the validator needed after the validation
// code was determined for a transaction on the specified channel at the specified height
PostValidate(cc string, blockNum, txNum uint64, err error)
}
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