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queryinstalled.go
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queryinstalled.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package chaincode
import (
"context"
"fmt"
"github.com/golang/protobuf/proto"
cb "github.com/hyperledger/fabric/protos/common"
pb "github.com/hyperledger/fabric/protos/peer"
lb "github.com/hyperledger/fabric/protos/peer/lifecycle"
"github.com/hyperledger/fabric/protoutil"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
// InstalledQuerier holds the dependencies needed to query
// the installed chaincodes
type InstalledQuerier struct {
Command *cobra.Command
EndorserClient EndorserClient
Signer Signer
}
// QueryInstalledCmd returns the cobra command for listing
// the installed chaincodes
func QueryInstalledCmd(i *InstalledQuerier) *cobra.Command {
chaincodeQueryInstalledCmd := &cobra.Command{
Use: "queryinstalled",
Short: "Query the installed chaincodes on a peer.",
Long: "Query the installed chaincodes on a peer.",
RunE: func(cmd *cobra.Command, args []string) error {
if i == nil {
ccInput := &ClientConnectionsInput{
CommandName: cmd.Name(),
EndorserRequired: true,
ChannelID: channelID,
PeerAddresses: peerAddresses,
TLSRootCertFiles: tlsRootCertFiles,
ConnectionProfilePath: connectionProfilePath,
TLSEnabled: viper.GetBool("peer.tls.enabled"),
}
cc, err := NewClientConnections(ccInput)
if err != nil {
return err
}
// queryinstalled only supports one peer connection,
// which is why we only wire in the first endorser
// client
i = &InstalledQuerier{
Command: cmd,
EndorserClient: cc.EndorserClients[0],
Signer: cc.Signer,
}
}
return i.Query()
},
}
flagList := []string{
"peerAddresses",
"tlsRootCertFiles",
"connectionProfile",
}
attachFlags(chaincodeQueryInstalledCmd, flagList)
return chaincodeQueryInstalledCmd
}
// Query returns the chaincodes installed on a peer
func (i *InstalledQuerier) Query() error {
if i.Command != nil {
// Parsing of the command line is done so silence cmd usage
i.Command.SilenceUsage = true
}
proposal, err := i.createProposal()
if err != nil {
return errors.WithMessage(err, "failed to create proposal")
}
signedProposal, err := signProposal(proposal, i.Signer)
if err != nil {
return errors.WithMessage(err, "failed to create signed proposal")
}
proposalResponse, err := i.EndorserClient.ProcessProposal(context.Background(), signedProposal)
if err != nil {
return errors.WithMessage(err, "failed to endorse proposal")
}
if proposalResponse == nil {
return errors.New("received nil proposal response")
}
if proposalResponse.Response == nil {
return errors.New("received proposal response with nil response")
}
if proposalResponse.Response.Status != int32(cb.Status_SUCCESS) {
return errors.Errorf("query failed with status: %d - %s", proposalResponse.Response.Status, proposalResponse.Response.Message)
}
return i.printResponse(proposalResponse)
}
// printResponse prints the information included in the response
// from the server.
func (i *InstalledQuerier) printResponse(proposalResponse *pb.ProposalResponse) error {
qicr := &lb.QueryInstalledChaincodesResult{}
err := proto.Unmarshal(proposalResponse.Response.Payload, qicr)
if err != nil {
return errors.Wrap(err, "failed to unmarshal proposal response's response payload")
}
fmt.Println("Installed chaincodes on peer:")
for _, chaincode := range qicr.InstalledChaincodes {
fmt.Printf("Package ID: %s, Label: %s\n", chaincode.PackageId, chaincode.Label)
}
return nil
}
func (i *InstalledQuerier) createProposal() (*pb.Proposal, error) {
args := &lb.QueryInstalledChaincodesArgs{}
argsBytes, err := proto.Marshal(args)
if err != nil {
return nil, errors.Wrap(err, "failed to marshal args")
}
ccInput := &pb.ChaincodeInput{
Args: [][]byte{[]byte("QueryInstalledChaincodes"), argsBytes},
}
cis := &pb.ChaincodeInvocationSpec{
ChaincodeSpec: &pb.ChaincodeSpec{
ChaincodeId: &pb.ChaincodeID{Name: lifecycleName},
Input: ccInput,
},
}
signerSerialized, err := i.Signer.Serialize()
if err != nil {
return nil, errors.WithMessage(err, "failed to serialize identity")
}
proposal, _, err := protoutil.CreateProposalFromCIS(cb.HeaderType_ENDORSER_TRANSACTION, "", cis, signerSerialized)
if err != nil {
return nil, errors.WithMessage(err, "failed to create ChaincodeInvocationSpec proposal")
}
return proposal, nil
}