github.com/lzy4123/fabric@v2.1.1+incompatible/core/common/validation/statebased/v13.go (about)

     1  /*
     2  Copyright IBM Corp. All Rights Reserved.
     3  
     4  SPDX-License-Identifier: Apache-2.0
     5  */
     6  
     7  package statebased
     8  
     9  import (
    10  	commonerrors "github.com/hyperledger/fabric/common/errors"
    11  	validation "github.com/hyperledger/fabric/core/handlers/validation/api/policies"
    12  	"github.com/hyperledger/fabric/protoutil"
    13  	"github.com/pkg/errors"
    14  )
    15  
    16  // NewV13Evaluator returns a policy evaluator that checks
    17  // 2 kinds of policies:
    18  // 1) chaincode endorsement policies;
    19  // 2) state-based endorsement policies.
    20  func NewV13Evaluator(policySupport validation.PolicyEvaluator, vpmgr KeyLevelValidationParameterManager) *policyCheckerFactoryV13 {
    21  	return &policyCheckerFactoryV13{
    22  		policySupport: policySupport,
    23  		vpmgr:         vpmgr,
    24  	}
    25  }
    26  
    27  type policyCheckerFactoryV13 struct {
    28  	vpmgr         KeyLevelValidationParameterManager
    29  	policySupport validation.PolicyEvaluator
    30  }
    31  
    32  func (p *policyCheckerFactoryV13) Evaluator(ccEP []byte) RWSetPolicyEvaluator {
    33  	return &baseEvaluator{
    34  		epEvaluator: &policyCheckerV13{
    35  			policySupport: p.policySupport,
    36  			ccEP:          ccEP,
    37  		},
    38  		vpmgr:         p.vpmgr,
    39  		policySupport: p.policySupport,
    40  	}
    41  }
    42  
    43  /**********************************************************************************************************/
    44  /**********************************************************************************************************/
    45  
    46  type policyCheckerV13 struct {
    47  	someEPChecked bool
    48  	ccEPChecked   bool
    49  	policySupport validation.PolicyEvaluator
    50  	ccEP          []byte
    51  }
    52  
    53  func (p *policyCheckerV13) checkCCEPIfCondition(cc string, blockNum, txNum uint64, condition bool, sd []*protoutil.SignedData) commonerrors.TxValidationError {
    54  	if condition {
    55  		return nil
    56  	}
    57  
    58  	// validate against cc ep
    59  	err := p.policySupport.Evaluate(p.ccEP, sd)
    60  	if err != nil {
    61  		return policyErr(errors.Wrapf(err, "validation of endorsement policy for chaincode %s in tx %d:%d failed", cc, blockNum, txNum))
    62  	}
    63  
    64  	p.ccEPChecked = true
    65  	p.someEPChecked = true
    66  	return nil
    67  }
    68  
    69  func (p *policyCheckerV13) CheckCCEPIfNotChecked(cc, coll string, blockNum, txNum uint64, sd []*protoutil.SignedData) commonerrors.TxValidationError {
    70  	return p.checkCCEPIfCondition(cc, blockNum, txNum, p.ccEPChecked, sd)
    71  }
    72  
    73  func (p *policyCheckerV13) CheckCCEPIfNoEPChecked(cc string, blockNum, txNum uint64, sd []*protoutil.SignedData) commonerrors.TxValidationError {
    74  	return p.checkCCEPIfCondition(cc, blockNum, txNum, p.someEPChecked, sd)
    75  }
    76  
    77  func (p *policyCheckerV13) SBEPChecked() {
    78  	p.someEPChecked = true
    79  }