CODEWITHSUNDEEP
hyperledger-fabric
song chan back
song chan back

Reputation: 33

Hyperledger Fabric, How to apply Endorsement Logic

Hyperledger Fabric Readthedocs__Endorsing Node

In the above link, Endorsing Peer executes Transaction and signs tran-proposal according to endorsing logic. However, there is no description of Endorsing Logic anywhere else in this document.

What I want to do is verify the contents of a transaction. So I want to use Endorsing Logic, can you tell me?

Upvotes: 1

Views: 445

Answers (1)

Artem Barger
Artem Barger

Reputation: 41232

In fact the endorsing logic is in a sense is the literally business logic of your chaincode.

Once chaincode code executed and there is no error in results, peer uses ESCC (Endorsement System Chaincode) to actually sign these results, such that later on peer will be using signatures of endorsers for same transaction proposal to validate the conformance with Endorsement Policy. Which basically takes care to validate whenever executions results are consistent and deterministic, for example you can have your endorsement policy:

AND(Org1.member, Org2.member)

meaning that execution of same chaincode for same input on peers of Org1 and Org2 are the same, prior to commit peer leverages VSCC(Validation System Chaincode) to actually enforce endorsement policy.

Now, you can also do your own ESCC and VSCC to hold your custom logic if you'd like to add something else.

Upvotes: 4

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