| /* |
| * 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.examples.common; |
| |
| import org.apache.ratis.protocol.RaftGroup; |
| import org.apache.ratis.protocol.RaftGroupId; |
| import org.apache.ratis.protocol.RaftPeer; |
| |
| import java.io.BufferedReader; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.Properties; |
| import java.util.UUID; |
| |
| /** |
| * Constants across servers and clients |
| */ |
| public final class Constants { |
| public static final List<RaftPeer> PEERS; |
| public static final String PATH; |
| |
| static { |
| final Properties properties = new Properties(); |
| final String conf = "ratis-examples/src/main/resources/conf.properties"; |
| try(InputStream inputStream = new FileInputStream(conf); |
| Reader reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8); |
| BufferedReader bufferedReader = new BufferedReader(reader)) { |
| properties.load(bufferedReader); |
| } catch (IOException e) { |
| throw new IllegalStateException("Failed to load " + conf, e); |
| } |
| final String key = "raft.server.address.list"; |
| final String[] addresses = Optional.ofNullable(properties.getProperty(key)) |
| .map(s -> s.split(",")) |
| .orElse(null); |
| if (addresses == null || addresses.length == 0) { |
| throw new IllegalArgumentException("Failed to get " + key + " from " + conf); |
| } |
| |
| final String key1 = "raft.server.root.storage.path"; |
| final String path = properties.getProperty(key1); |
| PATH = path == null ? "./ratis-examples/target" : path; |
| final List<RaftPeer> peers = new ArrayList<>(addresses.length); |
| for (int i = 0; i < addresses.length; i++) { |
| peers.add(RaftPeer.newBuilder().setId("n" + i).setAddress(addresses[i]).build()); |
| } |
| PEERS = Collections.unmodifiableList(peers); |
| } |
| |
| private static final UUID GROUP_ID = UUID.fromString("02511d47-d67c-49a3-9011-abb3109a44c1"); |
| |
| public static final RaftGroup RAFT_GROUP = RaftGroup.valueOf(RaftGroupId.valueOf(Constants.GROUP_ID), PEERS); |
| |
| private Constants() { |
| } |
| } |