func getProposal() (*peer.Proposal, error) {
cis := &peer.ChaincodeInvocationSpec{
ChaincodeSpec: &peer.ChaincodeSpec{
ChaincodeID: &peer.ChaincodeID{Name: "foo"},
Type: peer.ChaincodeSpec_GOLANG}}
uuid := util.GenerateUUID()
return utils.CreateProposalFromCIS(uuid, util.GetTestChainID(), cis, signerSerialized)
}
func endTxSimulationCIS(chainID string, txid string, txsim ledger.TxSimulator, payload []byte, commit bool, cis *pb.ChaincodeInvocationSpec) error {
// get serialized version of the signer
ss, err := signer.Serialize()
if err != nil {
return err
}
// get a proposal - we need it to get a transaction
prop, err := putils.CreateProposalFromCIS(txid, chainID, cis, ss)
if err != nil {
return err
}
return endTxSimulation(chainID, txsim, payload, commit, prop)
}
func isTxValidForVscc(payload *common.Payload, envBytes []byte) error {
// TODO: Extract the VSCC/policy from LCCC as soon as this is ready
vscc := "vscc"
chainName := payload.Header.ChainHeader.ChainID
if chainName == "" {
err := fmt.Errorf("transaction header does not contain an chain ID")
logger.Errorf("%s", err)
return err
}
txid := "N/A" // FIXME: is that appropriate?
// build arguments for VSCC invocation
// args[0] - function name (not used now)
// args[1] - serialized Envelope
args := [][]byte{[]byte(""), envBytes}
// create VSCC invocation proposal
vsccCis := &pb.ChaincodeInvocationSpec{ChaincodeSpec: &pb.ChaincodeSpec{Type: pb.ChaincodeSpec_GOLANG, ChaincodeID: &pb.ChaincodeID{Name: vscc}, CtorMsg: &pb.ChaincodeInput{Args: args}}}
prop, err := putils.CreateProposalFromCIS(txid, chainName, vsccCis, []byte(""))
if err != nil {
logger.Errorf("Cannot create a proposal to invoke VSCC, err %s\n", err)
return err
}
// get context for the chaincode execution
var txsim ledger.TxSimulator
lgr := peer.GetLedger(chainName)
txsim, err = lgr.NewTxSimulator()
if err != nil {
logger.Errorf("Cannot obtain tx simulator, err %s\n", err)
return err
}
defer txsim.Done()
ctxt := context.WithValue(context.Background(), chaincode.TXSimulatorKey, txsim)
cccid := chaincode.NewCCContext(chainName, vscc, "", txid, true, prop)
// invoke VSCC
_, _, err = chaincode.ExecuteChaincode(ctxt, cccid, args)
if err != nil {
logger.Errorf("VSCC check failed for transaction, error %s", err)
return err
}
return nil
}
func createTx() (*common.Envelope, error) {
cis := &peer.ChaincodeInvocationSpec{ChaincodeSpec: &peer.ChaincodeSpec{ChaincodeID: &peer.ChaincodeID{Name: "foo"}}}
uuid := util.GenerateUUID()
prop, err := utils.CreateProposalFromCIS(uuid, util.GetTestChainID(), cis, sid)
if err != nil {
return nil, err
}
presp, err := utils.CreateProposalResponse(prop.Header, prop.Payload, []byte("res"), nil, nil, id)
if err != nil {
return nil, err
}
return utils.CreateSignedTx(prop, id, presp)
}
func executeJoin(cf *JoinCmdFactory) (err error) {
spec, err := getJoinCCSpec()
if err != nil {
return err
}
// Build the ChaincodeInvocationSpec message
invocation := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}
creator, err := cf.Signer.Serialize()
if err != nil {
return fmt.Errorf("Error serializing identity for %s: %s\n", cf.Signer.GetIdentifier(), err)
}
uuid := cutil.GenerateUUID()
var prop *pb.Proposal
prop, err = putils.CreateProposalFromCIS(uuid, "", invocation, creator)
if err != nil {
return fmt.Errorf("Error creating proposal for join %s\n", err)
}
var signedProp *pb.SignedProposal
signedProp, err = putils.GetSignedProposal(prop, cf.Signer)
if err != nil {
return fmt.Errorf("Error creating signed proposal %s\n", err)
}
var proposalResp *pb.ProposalResponse
proposalResp, err = cf.EndorserClient.ProcessProposal(context.Background(), signedProp)
if err != nil {
return fmt.Errorf("Error endorsing %s\n", err)
}
if proposalResp == nil {
return fmt.Errorf("Error on join by endorsing: %s\n", err)
}
fmt.Printf("Join Result: %s\n", string(proposalResp.Response.Payload))
return nil
}
// chaincodeInvokeOrQuery invokes or queries the chaincode. If successful, the
// INVOKE form prints the ProposalResponse to STDOUT, and the QUERY form prints
// the query result on STDOUT. A command-line flag (-r, --raw) determines
// whether the query result is output as raw bytes, or as a printable string.
// The printable form is optionally (-x, --hex) a hexadecimal representation
// of the query response. If the query response is NIL, nothing is output.
//
// NOTE - Query will likely go away as all interactions with the endorser are
// Proposal and ProposalResponses
func chaincodeInvokeOrQuery(cmd *cobra.Command, args []string, invoke bool, cf *ChaincodeCmdFactory) (err error) {
spec, err := getChaincodeSpecification(cmd)
if err != nil {
return err
}
// Build the ChaincodeInvocationSpec message
invocation := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}
if customIDGenAlg != common.UndefinedParamValue {
invocation.IdGenerationAlg = customIDGenAlg
}
creator, err := cf.Signer.Serialize()
if err != nil {
return fmt.Errorf("Error serializing identity for %s: %s\n", cf.Signer.GetIdentifier(), err)
}
uuid := cutil.GenerateUUID()
var prop *pb.Proposal
prop, err = putils.CreateProposalFromCIS(uuid, chainID, invocation, creator)
if err != nil {
return fmt.Errorf("Error creating proposal %s: %s\n", chainFuncName, err)
}
var signedProp *pb.SignedProposal
signedProp, err = putils.GetSignedProposal(prop, cf.Signer)
if err != nil {
return fmt.Errorf("Error creating signed proposal %s: %s\n", chainFuncName, err)
}
var proposalResp *pb.ProposalResponse
proposalResp, err = cf.EndorserClient.ProcessProposal(context.Background(), signedProp)
if err != nil {
return fmt.Errorf("Error endorsing %s: %s\n", chainFuncName, err)
}
if invoke {
if proposalResp != nil {
// assemble a signed transaction (it's an Envelope message)
env, err := putils.CreateSignedTx(prop, cf.Signer, proposalResp)
if err != nil {
return fmt.Errorf("Could not assemble transaction, err %s", err)
}
// send the envelope for ordering
if err = cf.BroadcastClient.Send(env); err != nil {
return fmt.Errorf("Error sending transaction %s: %s\n", chainFuncName, err)
}
}
logger.Infof("Invoke result: %v", proposalResp)
} else {
if proposalResp == nil {
return fmt.Errorf("Error query %s by endorsing: %s\n", chainFuncName, err)
}
if chaincodeQueryRaw {
if chaincodeQueryHex {
err = errors.New("Options --raw (-r) and --hex (-x) are not compatible\n")
return
}
fmt.Print("Query Result (Raw): ")
os.Stdout.Write(proposalResp.Response.Payload)
} else {
if chaincodeQueryHex {
fmt.Printf("Query Result: %x\n", proposalResp.Response.Payload)
} else {
fmt.Printf("Query Result: %s\n", string(proposalResp.Response.Payload))
}
}
}
return nil
}