| /* |
| * 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.ignite.internal.configuration; |
| |
| import java.io.Serializable; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.RandomAccess; |
| import java.util.concurrent.CompletableFuture; |
| import org.apache.ignite.configuration.ConfigurationValue; |
| import org.apache.ignite.configuration.RootKey; |
| import org.apache.ignite.internal.configuration.tree.ConfigurationSource; |
| import org.apache.ignite.internal.configuration.tree.ConstructableTreeNode; |
| |
| /** |
| * Holder for property value. Expected to be used with numbers, strings and other immutable objects, e.g. IP addresses. |
| */ |
| public class DynamicProperty<T extends Serializable> extends ConfigurationNode<T, T> implements ConfigurationValue<T> { |
| /** |
| * Constructor. |
| * @param prefix Property prefix. |
| * @param key Property name. |
| * @param rootKey Root key. |
| * @param changer Configuration changer. |
| */ |
| public DynamicProperty( |
| List<String> prefix, |
| String key, |
| RootKey<?, ?> rootKey, |
| ConfigurationChanger changer |
| ) { |
| super(prefix, key, rootKey, changer); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public T value() { |
| return refreshValue(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public CompletableFuture<Void> update(T newValue) { |
| Objects.requireNonNull(newValue, "Configuration value cannot be null."); |
| |
| assert keys instanceof RandomAccess; |
| assert !keys.isEmpty(); |
| |
| ConfigurationSource src = new ConfigurationSource() { |
| /** Current index in the {@code keys}. */ |
| private int level = 0; |
| |
| /** {@inheritDoc} */ |
| @Override public void descend(ConstructableTreeNode node) { |
| assert level < keys.size(); |
| |
| node.construct(keys.get(level++), this, true); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public <T> T unwrap(Class<T> clazz) { |
| assert level == keys.size(); |
| |
| assert clazz.isInstance(newValue); |
| |
| return clazz.cast(newValue); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void reset() { |
| level = 0; |
| } |
| }; |
| |
| // Use resulting tree as update request for the storage. |
| return changer.change(src); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String key() { |
| return key; |
| } |
| } |