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[FAB-8941]- extract matching logic from queryconfig
Extract Matching logic out of query configblock Change-Id: I6e5a748bbc63751053c6a41c9d8d999d0e40f7bd Signed-off-by: Pavan Kappara <pavan.kappara@securekey.com>
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Pavan Kappara
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Mar 16, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| Copyright SecureKey Technologies Inc. All Rights Reserved. | ||
| SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package channel | ||
|
|
||
| import ( | ||
| "github.com/golang/protobuf/proto" | ||
| "github.com/hyperledger/fabric-sdk-go/pkg/common/providers/fab" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| // TransactionProposalResponseVerifier struct is for verifying TransactionProposalResponse and matches config blocks | ||
| type TransactionProposalResponseVerifier struct { | ||
| MinResponses int | ||
| } | ||
|
|
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| // Verify checks transaction proposal response (empty) | ||
| func (tprv *TransactionProposalResponseVerifier) Verify(response *fab.TransactionProposalResponse) error { | ||
| return nil | ||
| } | ||
|
|
||
| // Match verifies and matches transaction proposal responses | ||
| func (tprv *TransactionProposalResponseVerifier) Match(transactionProposalResponses []*fab.TransactionProposalResponse) error { | ||
| if tprv.MinResponses <= 0 { | ||
| return errors.New("minimum Responses has to be greater than zero") | ||
| } | ||
|
|
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| if len(transactionProposalResponses) < tprv.MinResponses { | ||
| return errors.Errorf("required minimum %d endorsments got %d", tprv.MinResponses, len(transactionProposalResponses)) | ||
| } | ||
|
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| block, err := createCommonBlock(transactionProposalResponses[0]) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if block.Data == nil || block.Data.Data == nil { | ||
| return errors.New("config block data is nil") | ||
| } | ||
|
|
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| if len(block.Data.Data) != 1 { | ||
| return errors.New("config block must contain one transaction") | ||
| } | ||
|
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| // Compare block data from remaining responses | ||
| for _, tpr := range transactionProposalResponses[1:] { | ||
| b, err := createCommonBlock(tpr) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if !proto.Equal(block.Data, b.Data) { | ||
| return errors.New("payloads for config block do not match") | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } |
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