forked from hyperledger/fabric-sdk-go
/
peerendorser.go
205 lines (170 loc) · 6.88 KB
/
peerendorser.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package peer
import (
reqContext "context"
"crypto/x509"
"regexp"
"time"
"github.com/pkg/errors"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/keepalive"
grpcstatus "google.golang.org/grpc/status"
"github.com/hyperledger/fabric-protos-go/common"
pb "github.com/hyperledger/fabric-protos-go/peer"
"github.com/VRamakrishna/fabric-sdk-go/internal/github.com/hyperledger/fabric/protoutil"
"github.com/VRamakrishna/fabric-sdk-go/pkg/client/common/verifier"
"github.com/VRamakrishna/fabric-sdk-go/pkg/common/errors/status"
"github.com/VRamakrishna/fabric-sdk-go/pkg/common/providers/fab"
"github.com/VRamakrishna/fabric-sdk-go/pkg/context"
"github.com/VRamakrishna/fabric-sdk-go/pkg/core/config/comm"
"github.com/VRamakrishna/fabric-sdk-go/pkg/core/config/endpoint"
)
const (
// GRPC max message size (same as Fabric)
maxCallRecvMsgSize = 100 * 1024 * 1024
maxCallSendMsgSize = 100 * 1024 * 1024
)
var chaincodeNotFoundPattern = regexp.MustCompile(`(chaincode [^ ]+ not found)|(could not find chaincode with name)|(cannot get package for chaincode)`)
// peerEndorser enables access to a GRPC-based endorser for running transaction proposal simulations
type peerEndorser struct {
grpcDialOption []grpc.DialOption
target string
dialTimeout time.Duration
commManager fab.CommManager
}
type peerEndorserRequest struct {
target string
certificate *x509.Certificate
serverHostOverride string
config fab.EndpointConfig
kap keepalive.ClientParameters
failFast bool
allowInsecure bool
commManager fab.CommManager
}
func newPeerEndorser(endorseReq *peerEndorserRequest) (*peerEndorser, error) {
if len(endorseReq.target) == 0 {
return nil, errors.New("target is required")
}
// Construct dialer options for the connection
var grpcOpts []grpc.DialOption
if endorseReq.kap.Time > 0 {
grpcOpts = append(grpcOpts, grpc.WithKeepaliveParams(endorseReq.kap))
}
grpcOpts = append(grpcOpts, grpc.WithDefaultCallOptions(grpc.WaitForReady(!endorseReq.failFast)))
if endpoint.AttemptSecured(endorseReq.target, endorseReq.allowInsecure) {
tlsConfig, err := comm.TLSConfig(endorseReq.certificate, endorseReq.serverHostOverride, endorseReq.config)
if err != nil {
return nil, err
}
//verify if certificate was expired or not yet valid
tlsConfig.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
return verifier.VerifyPeerCertificate(rawCerts, verifiedChains)
}
grpcOpts = append(grpcOpts, grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)))
} else {
grpcOpts = append(grpcOpts, grpc.WithInsecure())
}
grpcOpts = append(grpcOpts, grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(maxCallRecvMsgSize),
grpc.MaxCallSendMsgSize(maxCallSendMsgSize)))
timeout := endorseReq.config.Timeout(fab.PeerConnection)
pc := &peerEndorser{
grpcDialOption: grpcOpts,
target: endpoint.ToAddress(endorseReq.target),
dialTimeout: timeout,
commManager: endorseReq.commManager,
}
return pc, nil
}
// ProcessTransactionProposal sends the transaction proposal to a peer and returns the response.
func (p *peerEndorser) ProcessTransactionProposal(ctx reqContext.Context, request fab.ProcessProposalRequest) (*fab.TransactionProposalResponse, error) {
logger.Debugf("Processing proposal using endorser: %s", p.target)
proposalResponse, err := p.sendProposal(ctx, request)
if err != nil {
tpr := fab.TransactionProposalResponse{Endorser: p.target}
return &tpr, errors.Wrapf(err, "Transaction processing for endorser [%s]", p.target)
}
chaincodeStatus, err := getChaincodeResponseStatus(proposalResponse)
if err != nil {
return nil, errors.WithMessage(err, "chaincode response status parsing failed")
}
tpr := fab.TransactionProposalResponse{
ProposalResponse: proposalResponse,
Endorser: p.target,
ChaincodeStatus: chaincodeStatus,
Status: proposalResponse.GetResponse().Status,
}
return &tpr, nil
}
func (p *peerEndorser) conn(ctx reqContext.Context) (*grpc.ClientConn, error) {
commManager, ok := context.RequestCommManager(ctx)
if !ok {
commManager = p.commManager
}
ctx, cancel := reqContext.WithTimeout(ctx, p.dialTimeout)
defer cancel()
return commManager.DialContext(ctx, p.target, p.grpcDialOption...)
}
func (p *peerEndorser) releaseConn(ctx reqContext.Context, conn *grpc.ClientConn) {
commManager, ok := context.RequestCommManager(ctx)
if !ok {
commManager = p.commManager
}
commManager.ReleaseConn(conn)
}
func (p *peerEndorser) sendProposal(ctx reqContext.Context, proposal fab.ProcessProposalRequest) (*pb.ProposalResponse, error) {
conn, err := p.conn(ctx)
if err != nil {
rpcStatus, ok := grpcstatus.FromError(err)
if ok {
return nil, errors.WithMessage(status.NewFromGRPCStatus(rpcStatus), "connection failed")
}
return nil, status.New(status.EndorserClientStatus, status.ConnectionFailed.ToInt32(), err.Error(), []interface{}{p.target})
}
defer p.releaseConn(ctx, conn)
endorserClient := pb.NewEndorserClient(conn)
resp, err := endorserClient.ProcessProposal(ctx, proposal.SignedProposal)
if err != nil {
logger.Errorf("process proposal failed [%s]", err)
rpcStatus, ok := grpcstatus.FromError(err)
if ok {
err = status.NewFromGRPCStatus(rpcStatus)
}
} else {
//check error from response (for :fabric v1.2 and later)
err = extractChaincodeErrorFromResponse(resp)
}
return resp, err
}
//extractChaincodeErrorFromResponse extracts chaincode error from proposal response
func extractChaincodeErrorFromResponse(resp *pb.ProposalResponse) error {
if resp.Response.Status < int32(common.Status_SUCCESS) || resp.Response.Status >= int32(common.Status_BAD_REQUEST) {
details := []interface{}{resp.Endorsement, resp.Response.Payload}
if chaincodeNotFoundPattern.MatchString(resp.Response.Message) {
return status.New(status.EndorserClientStatus, int32(status.ChaincodeNameNotFound), resp.Response.Message, details)
}
return status.New(status.ChaincodeStatus, resp.Response.Status, resp.Response.Message, details)
}
return nil
}
// getChaincodeResponseStatus gets the actual response status from response.Payload.extension.Response.status, as fabric always returns actual 200
func getChaincodeResponseStatus(response *pb.ProposalResponse) (int32, error) {
if response.Payload != nil {
payload, err := protoutil.UnmarshalProposalResponsePayload(response.Payload)
if err != nil {
return 0, errors.Wrap(err, "unmarshal of proposal response payload failed")
}
extension, err := protoutil.UnmarshalChaincodeAction(payload.Extension)
if err != nil {
return 0, errors.Wrap(err, "unmarshal of chaincode action failed")
}
if extension != nil && extension.Response != nil {
return extension.Response.Status, nil
}
}
return response.Response.Status, nil
}