| /* |
| * 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.sling.distribution.journal.impl.subscriber; |
| |
| import org.apache.sling.api.resource.LoginException; |
| import org.apache.sling.api.resource.ModifiableValueMap; |
| import org.apache.sling.api.resource.PersistenceException; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.api.resource.ResourceResolverFactory; |
| import org.apache.sling.api.resource.ResourceUtil; |
| import org.apache.sling.api.resource.ValueMap; |
| import org.apache.sling.api.wrappers.ValueMapDecorator; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.ParametersAreNonnullByDefault; |
| |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.stream.Collectors; |
| |
| import static java.util.Collections.emptyMap; |
| import static java.util.Collections.singletonMap; |
| import static java.util.Objects.requireNonNull; |
| import static org.apache.sling.api.resource.ResourceResolverFactory.SUBSERVICE; |
| |
| @ParametersAreNonnullByDefault |
| public class LocalStore { |
| |
| private static final String ROOT_PATH = "/var/sling/distribution/journal/stores"; |
| |
| private static final Logger LOG = LoggerFactory.getLogger(LocalStore.class); |
| |
| private final ResourceResolverFactory resolverFactory; |
| |
| private final String storeId; |
| |
| private final String rootPath; |
| |
| public LocalStore(ResourceResolverFactory resolverFactory, String storeType, |
| String storeId) { |
| this.resolverFactory = Objects.requireNonNull(resolverFactory); |
| this.rootPath = String.format("%s/%s", ROOT_PATH, Objects.requireNonNull(storeType)); |
| this.storeId = Objects.requireNonNull(storeId); |
| createParent(); |
| } |
| |
| public synchronized void store(ResourceResolver serviceResolver, String key, Object value) |
| throws PersistenceException { |
| store(serviceResolver, Collections.singletonMap(key, value)); |
| } |
| |
| public synchronized void store(ResourceResolver serviceResolver, Map<String, Object> map) throws PersistenceException { |
| Resource parent = getParent(serviceResolver); |
| Resource store = parent.getChild(storeId); |
| |
| if (store != null) { |
| store.adaptTo(ModifiableValueMap.class).putAll(map); |
| } else { |
| serviceResolver.create(parent, storeId, map); |
| } |
| LOG.debug(String.format("Stored data %s for storeId %s", map.toString(), storeId)); |
| } |
| |
| public <T> T load(String key, T defaultValue) { |
| LOG.debug(String.format("Loading key %s for storeId %s with default value %s", key, storeId, defaultValue)); |
| return load().get(key, defaultValue); |
| } |
| |
| public ValueMap load() { |
| LOG.debug(String.format("Loading data for storeId %s", storeId)); |
| try (ResourceResolver serviceResolver = requireNonNull(getBookKeeperServiceResolver())) { |
| Resource parent = getParent(serviceResolver); |
| Resource store = parent.getChild(storeId); |
| Map<String, Object> properties = (store != null) ? filterJcrProperties(store.getValueMap()) : emptyMap(); |
| LOG.debug(String.format("Loaded data %s for storeId %s", properties.toString(), storeId)); |
| return new ValueMapDecorator(properties); |
| } catch (LoginException e) { |
| throw new RuntimeException("Failed to load data from the repository." + e.getMessage(), e); |
| } |
| } |
| |
| @Nonnull |
| private Resource getParent(ResourceResolver resolver) { |
| String msg = "Parent path " + rootPath + " must be created during provisioning."; |
| return requireNonNull(resolver.getResource(rootPath), msg); |
| } |
| |
| private void createParent() { |
| try (ResourceResolver resolver = getBookKeeperServiceResolver()) { |
| ResourceUtil.getOrCreateResource(resolver, |
| rootPath, "sling:Folder", "sling:Folder", true); |
| } catch (Exception e) { |
| throw new RuntimeException("Failed to create parent path " + rootPath + ". " + e.getMessage(), e); |
| } |
| } |
| |
| private Map<String, Object> filterJcrProperties(ValueMap map) { |
| return map.entrySet().stream() |
| .filter(e -> ! e.getKey().startsWith("jcr:")) |
| .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)); |
| } |
| |
| private ResourceResolver getBookKeeperServiceResolver() throws LoginException { |
| return resolverFactory.getServiceResourceResolver(singletonMap(SUBSERVICE, "bookkeeper")); |
| } |
| } |