endorser_util.py 文件源码

def createInvokeProposalForBDD(context, ccSpec, chainID, signersCert, Mspid, type):
    import binascii

    "Returns a deployment proposal of chaincode type"
    lc_chaincode_invocation_spec = chaincode_pb2.ChaincodeInvocationSpec(chaincode_spec = ccSpec)

    # Create
    ccHdrExt = proposal_pb2.ChaincodeHeaderExtension(chaincode_id=ccSpec.chaincode_id)
    ccProposalPayload = proposal_pb2.ChaincodeProposalPayload(input=lc_chaincode_invocation_spec.SerializeToString())
    serializedIdentity = identities_pb2.SerializedIdentity(mspid=Mspid, id_bytes=crypto.dump_certificate(crypto.FILETYPE_PEM, signersCert))
    nonce = bootstrap_util.BootstrapHelper.getNonce()
    sigHdr = bootstrap_util.make_signature_header(serializedIdentity.SerializeToString(), nonce)

    # Calculate the transaction ID
    tx_id = binascii.hexlify(bootstrap_util.computeCryptoHash(nonce + serializedIdentity.SerializeToString()))

    chainHdr = bootstrap_util.make_chain_header(type=common_dot_common_pb2.HeaderType.Value(type), channel_id=chainID,
                                                txID=tx_id,
                                                extension=ccHdrExt.SerializeToString())

    header = common_dot_common_pb2.Header(channel_header=chainHdr.SerializeToString(), signature_header=sigHdr.SerializeToString())

    # make proposal
    proposal = proposal_pb2.Proposal(header=header.SerializeToString(), payload=ccProposalPayload.SerializeToString())
    return proposal