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/*
Copyright IBM Corp. 2016-2017 All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package common
import (
"context"
"crypto/tls"
ab "github.com/hyperledger/fabric-protos-go/orderer"
"github.com/hyperledger/fabric/core/comm"
"github.com/pkg/errors"
)
// OrdererClient represents a client for communicating with an ordering
// service
type OrdererClient struct {
CommonClient
}
// NewOrdererClientFromEnv creates an instance of an OrdererClient from the
// global Viper instance
func NewOrdererClientFromEnv() (*OrdererClient, error) {
address, override, clientConfig, err := configFromEnv("orderer")
if err != nil {
return nil, errors.WithMessage(err, "failed to load config for OrdererClient")
}
gClient, err := comm.NewGRPCClient(clientConfig)
if err != nil {
return nil, errors.WithMessage(err, "failed to create OrdererClient from config")
}
oClient := &OrdererClient{
CommonClient: CommonClient{
GRPCClient: gClient,
Address: address,
sn: override}}
return oClient, nil
}
// Broadcast returns a broadcast client for the AtomicBroadcast service
func (oc *OrdererClient) Broadcast() (ab.AtomicBroadcast_BroadcastClient, error) {
conn, err := oc.CommonClient.NewConnection(oc.Address, comm.ServerNameOverride(oc.sn))
if err != nil {
return nil, errors.WithMessagef(err, "orderer client failed to connect to %s", oc.Address)
}
// TODO: check to see if we should actually handle error before returning
return ab.NewAtomicBroadcastClient(conn).Broadcast(context.TODO())
}
// Deliver returns a deliver client for the AtomicBroadcast service
func (oc *OrdererClient) Deliver() (ab.AtomicBroadcast_DeliverClient, error) {
conn, err := oc.CommonClient.NewConnection(oc.Address, comm.ServerNameOverride(oc.sn))
if err != nil {
return nil, errors.WithMessagef(err, "orderer client failed to connect to %s", oc.Address)
}
// TODO: check to see if we should actually handle error before returning
return ab.NewAtomicBroadcastClient(conn).Deliver(context.TODO())
}
// Certificate returns the TLS client certificate (if available)
func (oc *OrdererClient) Certificate() tls.Certificate {
return oc.CommonClient.Certificate()
}
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