func Test2EndorsersDisagree(t *testing.T) {
// get a toy proposal
prop, err := getProposal()
if err != nil {
t.Fatalf("getProposal failed, err %s", err)
return
}
simRes1 := []byte("simulation_result1")
// endorse it to get a proposal response
presp1, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes1, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
simRes2 := []byte("simulation_result2")
// endorse it to get a proposal response
presp2, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes2, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
// assemble a transaction from that proposal and endorsement
_, err = utils.CreateSignedTx(prop, signer, presp1, presp2)
if err == nil {
t.Fatalf("CreateSignedTx should have failed")
return
}
}
func Test2EndorsersAgree(t *testing.T) {
// get a toy proposal
prop, err := getProposal()
if err != nil {
t.Fatalf("getProposal failed, err %s", err)
return
}
simRes1 := []byte("simulation_result")
// endorse it to get a proposal response
presp1, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes1, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
simRes2 := []byte("simulation_result")
// endorse it to get a proposal response
presp2, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes2, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
// assemble a transaction from that proposal and endorsement
tx, err := utils.CreateSignedTx(prop, signer, presp1, presp2)
if err != nil {
t.Fatalf("CreateSignedTx failed, err %s", err)
return
}
// validate the transaction
_, _, err = ValidateTransaction(tx)
if err != nil {
t.Fatalf("ValidateTransaction failed, err %s", err)
return
}
}
func TestBadTx(t *testing.T) {
// get a toy proposal
prop, err := getProposal()
if err != nil {
t.Fatalf("getProposal failed, err %s", err)
return
}
simRes := []byte("simulation_result")
// endorse it to get a proposal response
presp, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
// assemble a transaction from that proposal and endorsement
tx, err := utils.CreateSignedTx(prop, signer, presp)
if err != nil {
t.Fatalf("CreateSignedTx failed, err %s", err)
return
}
// mess with the transaction payload
corrupt(tx.Payload)
// validate the transaction it should fail
_, _, err = ValidateTransaction(tx)
if err == nil {
t.Fatalf("ValidateTransaction should have failed")
return
}
// assemble a transaction from that proposal and endorsement
tx, err = utils.CreateSignedTx(prop, signer, presp)
if err != nil {
t.Fatalf("CreateSignedTx failed, err %s", err)
return
}
// mess with the transaction payload
corrupt(tx.Signature)
// validate the transaction it should fail
_, _, err = ValidateTransaction(tx)
if err == nil {
t.Fatalf("ValidateTransaction should have failed")
return
}
}
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 endTxSimulation(chainID string, txsim ledger.TxSimulator, payload []byte, commit bool, prop *pb.Proposal) error {
txsim.Done()
if lgr := peer.GetLedger(chainID); lgr != nil {
if commit {
var txSimulationResults []byte
var err error
//get simulation results
if txSimulationResults, err = txsim.GetTxSimulationResults(); err != nil {
return err
}
// assemble a (signed) proposal response message
resp, err := putils.CreateProposalResponse(prop.Header, prop.Payload, txSimulationResults, nil, nil, signer)
if err != nil {
return err
}
// get the envelope
env, err := putils.CreateSignedTx(prop, signer, resp)
if err != nil {
return err
}
envBytes, err := putils.GetBytesEnvelope(env)
if err != nil {
return err
}
//create the block with 1 transaction
block := common.NewBlock(1, []byte{})
block.Data.Data = [][]byte{envBytes}
//commit the block
if err := lgr.Commit(block); err != nil {
return err
}
}
}
return nil
}
// ConstructSingedTxEnv constructs a transaction envelop for tests
func ConstructSingedTxEnv(txid string, chainID string, ccName string, simulationResults []byte, events []byte, visibility []byte, signer msp.SigningIdentity) (*common.Envelope, error) {
ss, err := signer.Serialize()
if err != nil {
return nil, err
}
prop, err := putils.CreateChaincodeProposal(txid, chainID, &pb.ChaincodeInvocationSpec{ChaincodeSpec: &pb.ChaincodeSpec{ChaincodeID: &pb.ChaincodeID{Name: ccName}}}, ss)
if err != nil {
return nil, err
}
presp, err := putils.CreateProposalResponse(prop.Header, prop.Payload, simulationResults, nil, nil, signer)
if err != nil {
return nil, err
}
env, err := putils.CreateSignedTx(prop, signer, presp)
if err != nil {
return nil, err
}
return env, nil
}
// Invoke is called to endorse the specified Proposal
// For now, we sign the input and return the endorsed result. Later we can expand
// the chaincode to provide more sophisticate policy processing such as enabling
// policy specification to be coded as a transaction of the chaincode and Client
// could select which policy to use for endorsement using parameter
// @return a marshalled proposal response
// Note that Peer calls this function with 4 mandatory arguments (and 2 optional ones):
// args[0] - function name (not used now)
// args[1] - serialized Header object
// args[2] - serialized ChaincodeProposalPayload object
// args[3] - binary blob of simulation results
// args[4] - serialized events (optional)
// args[5] - payloadVisibility (optional)
//
// NOTE: this chaincode is meant to sign another chaincode's simulation
// results. It should not manipulate state as any state change will be
// silently discarded: the only state changes that will be persisted if
// this endorsement is successful is what we are about to sign, which by
// definition can't be a state change of our own.
func (e *EndorserOneValidSignature) Invoke(stub shim.ChaincodeStubInterface) ([]byte, error) {
args := stub.GetArgs()
if len(args) < 4 {
return nil, fmt.Errorf("Incorrect number of arguments (expected a minimum of 4, provided %d)", len(args))
} else if len(args) > 6 {
return nil, fmt.Errorf("Incorrect number of arguments (expected a maximum of 6, provided %d)", len(args))
}
logger.Infof("ESCC starts: %d args", len(args))
// handle the header
var hdr []byte
if args[1] == nil {
return nil, errors.New("serialized Header object is null")
}
hdr = args[1]
// handle the proposal payload
var payl []byte
if args[2] == nil {
return nil, errors.New("serialized ChaincodeProposalPayload object is null")
}
payl = args[2]
// handle simulation results
var results []byte
if args[3] == nil {
return nil, errors.New("simulation results are null")
}
results = args[3]
// Handle serialized events if they have been provided
// they might be nil in case there's no events but there
// is a visibility field specified as the next arg
events := []byte("")
if len(args) > 4 && args[4] != nil {
events = args[4]
}
// Handle payload visibility (it's an optional argument)
visibility := []byte("") // TODO: when visibility is properly defined, replace with the default
if len(args) > 5 {
if args[5] == nil {
return nil, errors.New("serialized events are null")
}
visibility = args[5]
}
// obtain the default signing identity for this peer; it will be used to sign this proposal response
localMsp := mspmgmt.GetLocalMSP()
if localMsp == nil {
return nil, fmt.Errorf("Nil local MSP manager")
}
signingEndorser, err := localMsp.GetDefaultSigningIdentity()
if err != nil {
return nil, fmt.Errorf("Could not obtain the default signing identity, err %s", err)
}
// obtain a proposal response
presp, err := utils.CreateProposalResponse(hdr, payl, results, events, visibility, signingEndorser)
if err != nil {
return nil, err
}
// marshall the proposal response so that we return its bytes
prBytes, err := utils.GetBytesProposalResponse(presp)
if err != nil {
return nil, fmt.Errorf("Could not marshall ProposalResponse: err %s", err)
}
logger.Infof("ESCC exits successfully")
return prBytes, nil
}
func TestGoodPath(t *testing.T) {
// get a toy proposal
prop, err := getProposal()
if err != nil {
t.Fatalf("getProposal failed, err %s", err)
return
}
// sign it
sProp, err := utils.GetSignedProposal(prop, signer)
if err != nil {
t.Fatalf("GetSignedProposal failed, err %s", err)
return
}
// validate it
_, _, _, err = ValidateProposalMessage(sProp)
if err != nil {
t.Fatalf("ValidateProposalMessage failed, err %s", err)
return
}
simRes := []byte("simulation_result")
// endorse it to get a proposal response
presp, err := utils.CreateProposalResponse(prop.Header, prop.Payload, simRes, nil, nil, signer)
if err != nil {
t.Fatalf("CreateProposalResponse failed, err %s", err)
return
}
// assemble a transaction from that proposal and endorsement
tx, err := utils.CreateSignedTx(prop, signer, presp)
if err != nil {
t.Fatalf("CreateSignedTx failed, err %s", err)
return
}
// validate the transaction
_, act, err := ValidateTransaction(tx)
if err != nil {
t.Fatalf("ValidateTransaction failed, err %s", err)
return
}
// expect one single action
if len(act) != 1 {
t.Fatalf("Ivalid number of TransactionAction, expected 1, got %d", len(act))
return
}
// get the payload of the action
_, simResBack, err := utils.GetPayloads(act[0])
if err != nil {
t.Fatalf("GetPayloads failed, err %s", err)
return
}
// compare it to the original action and expect it to be equal
if string(simRes) != string(simResBack.Results) {
t.Fatalf("Simulation results are different")
return
}
}