| /* |
| * 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 static org.apache.ignite.internal.configuration.tree.InnerNode.INJECTED_NAME; |
| import static org.apache.ignite.internal.configuration.tree.InnerNode.INTERNAL_ID; |
| import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.appendKey; |
| |
| 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.ConfigurationReadOnlyException; |
| import org.apache.ignite.configuration.ConfigurationValue; |
| import org.apache.ignite.configuration.RootKey; |
| import org.apache.ignite.configuration.annotation.InjectedName; |
| import org.apache.ignite.configuration.annotation.InternalId; |
| import org.apache.ignite.internal.configuration.direct.DirectPropertyProxy; |
| import org.apache.ignite.internal.configuration.direct.DirectValueProxy; |
| import org.apache.ignite.internal.configuration.direct.KeyPathNode; |
| import org.apache.ignite.internal.configuration.tree.ConfigurationSource; |
| import org.apache.ignite.internal.configuration.tree.ConstructableTreeNode; |
| import org.apache.ignite.internal.configuration.tree.InnerNode; |
| import org.apache.ignite.internal.tostring.S; |
| |
| /** |
| * 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> implements ConfigurationValue<T> { |
| /** Value cannot be changed. */ |
| private final boolean readOnly; |
| |
| /** Configuration field with {@link InjectedName}. */ |
| private final boolean injectedNameField; |
| |
| /** Configuration field with {@link InternalId}. */ |
| private final boolean internalIdField; |
| |
| /** |
| * Constructor. |
| * |
| * @param prefix Property prefix. |
| * @param key Property name. |
| * @param rootKey Root key. |
| * @param changer Configuration changer. |
| * @param listenOnly Only adding listeners mode, without the ability to get or update the property value. |
| * @param readOnly Value cannot be changed. |
| */ |
| public DynamicProperty( |
| List<String> prefix, |
| String key, |
| RootKey<?, ?> rootKey, |
| DynamicConfigurationChanger changer, |
| boolean listenOnly, |
| boolean readOnly |
| ) { |
| super( |
| INJECTED_NAME.equals(key) || INTERNAL_ID.equals(key) ? prefix : appendKey(prefix, key), |
| key, |
| rootKey, |
| changer, |
| listenOnly |
| ); |
| |
| this.readOnly = readOnly; |
| |
| this.injectedNameField = INJECTED_NAME.equals(key); |
| this.internalIdField = INTERNAL_ID.equals(key); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public T value() { |
| if (injectedNameField) { |
| // In this case "refreshValue()" is not of type "T", but an "InnerNode" holding it instead. |
| // "T" must be a String then, this is guarded by external invariants. |
| return (T) ((InnerNode) refreshValue()).getInjectedNameFieldValue(); |
| } else if (internalIdField) { |
| // In this case "refreshValue()" is not of type "T", but an "InnerNode" holding it instead. |
| // "T" must be a UUID then, this is guarded by external invariants. |
| return (T) ((InnerNode) refreshValue()).internalId(); |
| } else { |
| return refreshValue(); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public CompletableFuture<Void> update(T newValue) { |
| Objects.requireNonNull(newValue, "Configuration value cannot be null."); |
| |
| if (listenOnly) { |
| throw listenOnlyException(); |
| } |
| |
| if (readOnly) { |
| throw new ConfigurationReadOnlyException("Read only mode: " + keys); |
| } |
| |
| 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; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public DirectPropertyProxy<T> directProxy() { |
| if (injectedNameField || internalIdField) { |
| return new DirectValueProxy<>(appendKey(keyPath(), new KeyPathNode(key)), changer); |
| } else { |
| return new DirectValueProxy<>(keyPath(), changer); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String toString() { |
| return S.toString(DynamicProperty.class, this, "key", key, "value", value()); |
| } |
| } |