| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.ratis.client; |
| |
| import org.apache.ratis.RaftConfigKeys; |
| import org.apache.ratis.client.impl.ClientImplUtils; |
| import org.apache.ratis.conf.Parameters; |
| import org.apache.ratis.conf.RaftProperties; |
| import org.apache.ratis.datastream.SupportedDataStreamType; |
| import org.apache.ratis.protocol.ClientId; |
| import org.apache.ratis.protocol.RaftGroupId; |
| import org.apache.ratis.protocol.RaftPeer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.Closeable; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| /** |
| * A user interface extending {@link DataStreamRpcApi}. |
| */ |
| public interface DataStreamClient extends DataStreamRpcApi, Closeable { |
| Logger LOG = LoggerFactory.getLogger(DataStreamClient.class); |
| |
| /** Return the rpc client instance **/ |
| DataStreamClientRpc getClientRpc(); |
| |
| static Builder newBuilder() { |
| return new Builder(); |
| } |
| |
| /** To build {@link DataStreamClient} objects */ |
| class Builder { |
| private RaftPeer dataStreamServer; |
| private DataStreamClientRpc dataStreamClientRpc; |
| private RaftProperties properties; |
| private Parameters parameters; |
| private RaftGroupId raftGroupId; |
| private ClientId clientId; |
| |
| private Builder() {} |
| |
| public DataStreamClient build() { |
| Objects.requireNonNull(dataStreamServer, "The 'dataStreamServer' field is not initialized."); |
| if (properties != null) { |
| if (dataStreamClientRpc == null) { |
| final SupportedDataStreamType type = RaftConfigKeys.DataStream.type(properties, LOG::info); |
| dataStreamClientRpc = DataStreamClientFactory.newInstance(type, parameters) |
| .newDataStreamClientRpc(dataStreamServer, properties); |
| } |
| } |
| return ClientImplUtils.newDataStreamClient( |
| Optional.ofNullable(clientId).orElseGet(ClientId::randomId), |
| raftGroupId, dataStreamServer, dataStreamClientRpc, properties); |
| } |
| |
| public Builder setClientId(ClientId clientId) { |
| this.clientId = clientId; |
| return this; |
| } |
| |
| public Builder setRaftGroupId(RaftGroupId raftGroupId) { |
| this.raftGroupId = raftGroupId; |
| return this; |
| } |
| |
| public Builder setDataStreamServer(RaftPeer dataStreamServer) { |
| this.dataStreamServer = dataStreamServer; |
| return this; |
| } |
| |
| public Builder setDataStreamClientRpc(DataStreamClientRpc dataStreamClientRpc) { |
| this.dataStreamClientRpc = dataStreamClientRpc; |
| return this; |
| } |
| |
| public Builder setParameters(Parameters parameters) { |
| this.parameters = parameters; |
| return this; |
| } |
| |
| public Builder setProperties(RaftProperties properties) { |
| this.properties = properties; |
| return this; |
| } |
| } |
| } |