| /* |
| * |
| * 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.qpid.server.logging.logback; |
| |
| import java.io.File; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.server.logging.LogFileDetails; |
| import org.apache.qpid.server.logging.PathContent; |
| import org.apache.qpid.server.logging.ZippedContent; |
| |
| public class RolloverWatcher implements RollingPolicyDecorator.RolloverListener |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(RolloverWatcher.class); |
| private static final Comparator<LogFileDetails> LAST_MODIFIED_COMPARATOR = new Comparator<LogFileDetails>() |
| { |
| @Override |
| public int compare(final LogFileDetails o1, final LogFileDetails o2) |
| { |
| return Long.compare(o2.getLastModified(), o1.getLastModified()); |
| } |
| }; |
| private final Path _activeFilePath; |
| private volatile Collection<String> _rolledFiles; |
| private volatile Path _baseFolder; |
| |
| public RolloverWatcher(final String activeFileName) |
| { |
| _activeFilePath = new File(activeFileName).toPath(); |
| _rolledFiles = Collections.emptyList(); |
| } |
| |
| @Override |
| public void onRollover(Path baseFolder, String[] relativeFileNames) |
| { |
| _rolledFiles = Collections.unmodifiableCollection(Arrays.asList(relativeFileNames)); |
| _baseFolder = baseFolder; |
| } |
| |
| @Override |
| public void onNoRolloverDetected(final Path baseFolder, final String[] relativeFileNames) |
| { |
| if (_baseFolder == null) |
| { |
| _baseFolder = baseFolder; |
| } |
| LOGGER.info("Exceeded maximum number of rescans without detecting rolled over log file."); |
| } |
| |
| public PathContent getFileContent(String fileName) |
| { |
| if (fileName == null) |
| { |
| throw new IllegalArgumentException("File name cannot be null"); |
| } |
| |
| Path path = getPath(fileName); |
| return new PathContent(path, getContentType(fileName)); |
| } |
| |
| private Path getPath(String fileName) |
| { |
| Path path = null; |
| File active = _activeFilePath.toFile(); |
| if (fileName.equals(active.getName())) |
| { |
| path = active.toPath(); |
| } |
| else if (_rolledFiles.contains(fileName)) |
| { |
| path = _baseFolder.resolve(fileName); |
| } |
| return path; |
| } |
| |
| public Collection<String> getRolledFiles() |
| { |
| return _rolledFiles; |
| } |
| |
| public List<LogFileDetails> getLogFileDetails() |
| { |
| List<LogFileDetails> results = new ArrayList<>(); |
| results.add(getFileDetails(_activeFilePath)); |
| List<String> rolledFiles = new ArrayList<>(_rolledFiles); |
| for (String fileName : rolledFiles) |
| { |
| Path file = _baseFolder.resolve(fileName); |
| LogFileDetails details = getFileDetails(file); |
| results.add(details); |
| } |
| Collections.sort(results, LAST_MODIFIED_COMPARATOR); |
| return results; |
| } |
| |
| private LogFileDetails getFileDetails(Path path) |
| { |
| File file = path.toFile(); |
| return new LogFileDetails(getDisplayName(path), file.lastModified(), file.length()); |
| } |
| |
| private String getDisplayName(Path path) |
| { |
| String displayName = path.getFileName().toString(); |
| if (!_activeFilePath.equals(path) && (_baseFolder != null)) |
| { |
| try |
| { |
| displayName = _baseFolder.relativize(path).toString(); |
| } |
| catch (IllegalArgumentException e) |
| { |
| // active file might not be relative to root |
| // returning a file name |
| } |
| } |
| return displayName; |
| } |
| |
| public String getContentType(String fileName) |
| { |
| String fileNameLower = fileName.toLowerCase(); |
| if (fileNameLower.endsWith(".gz")) |
| { |
| return "application/x-gzip"; |
| } |
| else if (fileNameLower.endsWith(".zip")) |
| { |
| return "application/x-zip"; |
| } |
| else |
| { |
| return "text/plain"; |
| } |
| } |
| |
| public ZippedContent getFilesAsZippedContent(Set<String> fileNames) |
| { |
| if (fileNames == null) |
| { |
| throw new IllegalArgumentException("File name cannot be null"); |
| } |
| |
| Map<String, Path> paths = new TreeMap<>(); |
| for (String name: fileNames) |
| { |
| Path filePath = getPath(name); |
| if (filePath != null) |
| { |
| paths.put(name, filePath); |
| } |
| } |
| |
| return new ZippedContent(paths); |
| } |
| |
| public ZippedContent getAllFilesAsZippedContent() |
| { |
| Set<String> fileNames = new HashSet<>(_rolledFiles); |
| fileNames.add(getDisplayName(_activeFilePath)); |
| |
| return getFilesAsZippedContent(fileNames); |
| } |
| } |