| /* |
| * Copyright 2001-2005 The Apache Software Foundation. |
| * |
| * Licensed 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.logging.log4j.catalog.api.dao; |
| |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.time.Instant; |
| import java.time.LocalDateTime; |
| import java.time.ZoneId; |
| import java.util.Map; |
| |
| import com.fasterxml.jackson.core.JsonFactory; |
| import com.fasterxml.jackson.core.JsonParser; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.catalog.api.CatalogData; |
| |
| /** |
| * Reads the catalog from the local file system. |
| */ |
| public class FileCatalogReader extends AbstractCatalogReader { |
| |
| private static final Logger LOGGER = LogManager.getLogger(FileCatalogReader.class); |
| private static final String BASEDIR = "baseDir"; |
| |
| private static final String CATALOG_ATTRIBUTE_NAME = "catalogFile"; |
| private static final String DEFAULT_CATALOG_FILE = "src/main/resources/catalog.json"; |
| |
| private final String catalog; |
| private LocalDateTime lastUpdated; |
| |
| public FileCatalogReader(Map<String, String> attributes) throws IOException { |
| StringBuilder catalogPath = new StringBuilder(); |
| String basePath = attributes.get(BASEDIR); |
| String catalogFile = attributes.getOrDefault(CATALOG_ATTRIBUTE_NAME, DEFAULT_CATALOG_FILE); |
| if (basePath != null) { |
| catalogPath.append(attributes.get(BASEDIR)); |
| if (basePath.endsWith("/")) { |
| if (catalogFile.startsWith("/")) { |
| catalogPath.append(catalogFile.substring(1)); |
| } else { |
| catalogPath.append(catalogFile); |
| } |
| } else { |
| if (catalogFile.startsWith("/")) { |
| catalogPath.append(catalogFile); |
| } else { |
| catalogPath.append("/").append(catalogFile); |
| } |
| } |
| } else if (catalogFile != null){ |
| catalogPath.append(catalogFile); |
| } else { |
| LOGGER.warn("No catalogFile attribute was provided. Using {}", DEFAULT_CATALOG_FILE); |
| catalogPath.append(DEFAULT_CATALOG_FILE); |
| } |
| Path path = Paths.get(catalogPath.toString()); |
| lastUpdated = LocalDateTime.ofInstant(Instant.ofEpochMilli(path.toFile().lastModified()), |
| ZoneId.systemDefault()); |
| byte[] encoded = Files.readAllBytes(path); |
| catalog = new String(encoded, StandardCharsets.UTF_8); |
| JsonFactory factory = new JsonFactory(); |
| factory.enable(JsonParser.Feature.ALLOW_COMMENTS); |
| ObjectMapper objectMapper = new ObjectMapper(factory); |
| catalogData = objectMapper.readValue(catalog, CatalogData.class); |
| } |
| |
| public FileCatalogReader() throws IOException { |
| byte[] encoded = Files.readAllBytes(Paths.get(DEFAULT_CATALOG_FILE)); |
| catalog = new String(encoded, StandardCharsets.UTF_8); |
| JsonFactory factory = new JsonFactory(); |
| factory.enable(JsonParser.Feature.ALLOW_COMMENTS); |
| ObjectMapper objectMapper = new ObjectMapper(factory); |
| catalogData = objectMapper.readValue(catalog, CatalogData.class); |
| } |
| |
| @Override |
| public String readCatalog() { |
| return catalog; |
| } |
| |
| @Override |
| public LocalDateTime getLastUpdated() { |
| return null; |
| } |
| } |