| /* |
| * |
| * 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.knox.gateway.services.token.impl.state; |
| |
| import org.apache.knox.gateway.config.GatewayConfig; |
| import org.apache.knox.gateway.services.token.state.JournalEntry; |
| |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.nio.channels.Channels; |
| import java.nio.channels.FileChannel; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.DirectoryStream; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.StandardOpenOption; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * A TokenStateJournal implementation that manages separate files for token state. |
| */ |
| class MultiFileTokenStateJournal extends FileTokenStateJournal { |
| |
| // File extension for journal entry files |
| static final String ENTRY_FILE_EXT = ".ts"; |
| |
| // Filter used when listing all journal entry files in the journal directory |
| static final String ENTRY_FILE_EXT_FILTER = "*" + ENTRY_FILE_EXT; |
| |
| MultiFileTokenStateJournal(GatewayConfig config) throws IOException { |
| super(config); |
| } |
| |
| @Override |
| public void add(final String tokenId, long issueTime, long expiration, long maxLifetime) throws IOException { |
| add(Collections.singletonList(new FileJournalEntry(tokenId, issueTime, expiration, maxLifetime))); |
| } |
| |
| @Override |
| public void add(final List<JournalEntry> entries) throws IOException { |
| // Persist each journal entry as an individual file in the journal directory |
| for (JournalEntry entry : entries) { |
| final Path entryFile = journalDir.resolve(entry.getTokenId() + ENTRY_FILE_EXT); |
| log.persistingJournalEntry(entryFile.toString()); |
| try (FileChannel fileChannel = FileChannel.open(entryFile, StandardOpenOption.WRITE, |
| StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING)) { |
| fileChannel.lock(); |
| try (OutputStream out = Channels.newOutputStream(fileChannel)) { |
| BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out, StandardCharsets.UTF_8)); |
| writer.write(entry.toString()); |
| writer.newLine(); |
| writer.flush(); |
| } |
| log.addedJournalEntry(entry.getTokenId()); |
| } catch (IOException e){ |
| log.failedToPersistJournalEntry(entry.getTokenId(), e); |
| throw e; |
| } |
| } |
| } |
| |
| @Override |
| public JournalEntry get(final String tokenId) throws IOException { |
| JournalEntry result = null; |
| |
| Path entryFilePath = journalDir.resolve(tokenId + ENTRY_FILE_EXT); |
| if (Files.exists(entryFilePath)) { |
| try (FileChannel fileChannel = FileChannel.open(entryFilePath, StandardOpenOption.READ)) { |
| fileChannel.lock(0L, Long.MAX_VALUE, true); |
| List<FileJournalEntry> entries = loadJournal(fileChannel); |
| if (entries.isEmpty()) { |
| log.journalEntryNotFound(tokenId); |
| } else { |
| result = entries.get(0); |
| } |
| } |
| } else { |
| log.journalEntryNotFound(tokenId); |
| } |
| |
| return result; |
| } |
| |
| @Override |
| public void remove(final Collection<String> tokenIds) throws IOException { |
| // Remove the journal entry files corresponding to the specified token identifiers |
| for (String tokenId : tokenIds) { |
| Path entryFilePath = journalDir.resolve(tokenId + ENTRY_FILE_EXT); |
| if (Files.exists(entryFilePath)) { |
| Files.delete(entryFilePath); |
| log.removedJournalEntry(tokenId); |
| } |
| } |
| } |
| |
| @Override |
| protected List<JournalEntry> loadJournal() throws IOException { |
| List<JournalEntry> entries = new ArrayList<>(); |
| |
| // List all the journal entry files in the directory, and create journal entries for them |
| if (Files.exists(journalDir)) { |
| log.loadingPersistedJournalEntries(); |
| try (DirectoryStream<Path> stream = Files.newDirectoryStream(journalDir, ENTRY_FILE_EXT_FILTER)) { |
| for (Path entryFilePath : stream ) { |
| try (FileChannel fileChannel = FileChannel.open(entryFilePath, StandardOpenOption.READ)) { |
| fileChannel.lock(0L, Long.MAX_VALUE, true); |
| entries.addAll(loadJournal(fileChannel)); |
| if (entries.isEmpty()) { |
| log.emptyJournalEntry(entryFilePath.toString()); |
| } else { |
| // Should only be a single entry for this implementation |
| log.loadedPersistedJournalEntry(entries.get(0).getTokenId()); |
| } |
| } |
| } |
| } |
| } |
| |
| return entries; |
| } |
| } |