/
rpc.go
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/
rpc.go
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// Copyright © 2023 Kaleido, Inc.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package client
import (
"github.com/hyperledger/fabric-sdk-go/pkg/core/config"
"github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
"github.com/hyperledger/firefly-fabconnect/internal/conf"
"github.com/hyperledger/firefly-fabconnect/internal/errors"
"github.com/hyperledger/firefly-fabconnect/internal/rest/identity"
log "github.com/sirupsen/logrus"
)
// Instantiate an RPC client to interact with a Fabric network. based on the client configuration
// on gateway usage, it creates different types of client under the cover:
// - "useGatewayClient: true": returned RPCClient uses the client-side Gateway
// - "useGatewayClient: false": returned RPCClient uses a static network map described by the Connection Profile
// - "useGatewayServer: true": for Fabric 2.4 node only, the returned RPCClient utilizes the server-side gateway service
func RPCConnect(c conf.RPCConf, txTimeout int) (RPCClient, identity.Client, error) {
configProvider := config.FromFile(c.ConfigPath)
userStore, err := newUserstore(configProvider)
if err != nil {
return nil, nil, errors.Errorf("User credentials store creation failed. %s", err)
}
identityClient, err := newIdentityClient(configProvider, userStore)
if err != nil {
return nil, nil, err
}
sdk, err := fabsdk.New(configProvider)
if err != nil {
return nil, nil, errors.Errorf("Failed to initialize a new SDK instance. %s", err)
}
ledgerClient := newLedgerClient(configProvider, sdk, identityClient)
eventClient := newEventClient(configProvider, sdk, identityClient)
var rpcClient RPCClient
if !c.UseGatewayClient && !c.UseGatewayServer {
rpcClient, err = newRPCClientFromCCP(configProvider, txTimeout, userStore, identityClient, ledgerClient, eventClient)
if err != nil {
return nil, nil, err
}
log.Info("Using static connection profile mode of the RPC client")
} else if c.UseGatewayClient {
rpcClient, err = newRPCClientWithClientSideGateway(configProvider, txTimeout, identityClient, ledgerClient, eventClient)
if err != nil {
return nil, nil, err
}
log.Info("Using client-side gateway mode of the RPC client")
}
return rpcClient, identityClient, nil
}