001/**
002 * Copyright (C) 2006-2025 Talend Inc. - www.talend.com
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.talend.sdk.component.runtime.manager.service;
017
018import static java.util.Optional.ofNullable;
019import static java.util.stream.Collectors.toSet;
020
021import java.io.ObjectStreamException;
022import java.io.Serializable;
023import java.util.Collection;
024import java.util.Objects;
025import java.util.Set;
026import java.util.stream.Stream;
027
028import org.talend.sdk.component.api.service.configuration.LocalConfiguration;
029import org.talend.sdk.component.runtime.serialization.SerializableService;
030
031import lombok.AllArgsConstructor;
032
033@AllArgsConstructor
034public class LocalConfigurationService implements LocalConfiguration, Serializable {
035
036    private final Collection<LocalConfiguration> rawDelegates;
037
038    private final String plugin;
039
040    @Override
041    public String get(final String key) {
042        return rawDelegates
043                .stream()
044                .map(d -> read(d, plugin + "." + key))
045                .filter(Objects::nonNull)
046                .findFirst()
047                .orElseGet(() -> rawDelegates // fallback on direct keys
048                        .stream()
049                        .map(d -> read(d, key))
050                        .filter(Objects::nonNull)
051                        .findFirst()
052                        .orElse(null));
053    }
054
055    @Override
056    public Set<String> keys() {
057        return rawDelegates
058                .stream()
059                .flatMap(d -> d.keys().stream())
060                .flatMap(k -> !k.startsWith(plugin + '.') ? Stream.of(k)
061                        : Stream.of(k, k.substring(plugin.length() + 1)))
062                .collect(toSet());
063    }
064
065    private String read(final LocalConfiguration d, final String entryKey) {
066        return ofNullable(d.get(entryKey)).orElseGet(() -> d.get(entryKey.replace('.', '_')));
067    }
068
069    Object writeReplace() throws ObjectStreamException {
070        return new SerializableService(plugin, LocalConfiguration.class.getName());
071    }
072}