/
peerclient.go
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/
peerclient.go
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/*
Copyright IBM Corp. 2016-2017 All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package common
import (
"fmt"
"time"
"github.com/hyperledger/fabric/core/comm"
pb "github.com/hyperledger/fabric/protos/peer"
"github.com/pkg/errors"
)
// PeerClient represents a client for communicating with a peer
type PeerClient struct {
commonClient
}
// NewPeerClientFromEnv creates an instance of a PeerClient from the global
// Viper instance
func NewPeerClientFromEnv() (*PeerClient, error) {
address, override, clientConfig, err := configFromEnv("peer")
if err != nil {
return nil, errors.WithMessage(err,
"failed to load config for PeerClient")
}
// set timeout
clientConfig.Timeout = time.Second * 3
gClient, err := comm.NewGRPCClient(clientConfig)
if err != nil {
return nil, errors.WithMessage(err,
"failed to create PeerClient from config")
}
pClient := &PeerClient{
commonClient: commonClient{
GRPCClient: gClient,
address: address,
sn: override}}
return pClient, nil
}
// Endorser returns a client for the Endorser service
func (pc *PeerClient) Endorser() (pb.EndorserClient, error) {
conn, err := pc.commonClient.NewConnection(pc.address, pc.sn)
if err != nil {
return nil, errors.WithMessage(err,
fmt.Sprintf("endorser client failed to connect to %s", pc.address))
}
return pb.NewEndorserClient(conn), nil
}
// Admin returns a client for the Admin service
func (pc *PeerClient) Admin() (pb.AdminClient, error) {
conn, err := pc.commonClient.NewConnection(pc.address, pc.sn)
if err != nil {
return nil, errors.WithMessage(err,
fmt.Sprintf("admin client failed to connect to %s", pc.address))
}
return pb.NewAdminClient(conn), nil
}
// GetEndorserClient returns a new endorser client. The target address for
// the client is taken from the configuration setting "peer.address"
func GetEndorserClient() (pb.EndorserClient, error) {
peerClient, err := NewPeerClientFromEnv()
if err != nil {
return nil, err
}
return peerClient.Endorser()
}
// GetAdminClient returns a new admin client. The target address for
// the client is taken from the configuration setting "peer.address"
func GetAdminClient() (pb.AdminClient, error) {
peerClient, err := NewPeerClientFromEnv()
if err != nil {
return nil, err
}
return peerClient.Admin()
}