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/*
 * Copyright (c) 2017. AxonIQ
 * 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 io.axoniq.eventstore.client;

import io.grpc.ManagedChannel;
import io.grpc.netty.GrpcSslContexts;
import io.grpc.netty.NettyChannelBuilder;
import io.netty.handler.ssl.SslContext;

import javax.net.ssl.SSLException;
import java.io.File;

/**
 */
public class ManagedChannelUtil {
    public static ManagedChannel createManagedChannel( String host, int port, String certChainFile) {
        NettyChannelBuilder builder = NettyChannelBuilder.forAddress(host, port);
        if (certChainFile != null ) {
            try {
                SslContext sslContext = GrpcSslContexts.forClient()
                        .trustManager(new File(certChainFile))
                        .build();
                builder.sslContext(sslContext);
            } catch (SSLException e) {
                throw new RuntimeException("Couldn't set up SSL context", e);
            }
        } else {
            builder.usePlaintext(true);
        }
        return builder.build();
    }
}