| /* |
| * 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.sshd.sftp.client.fs; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.function.Supplier; |
| import java.util.stream.Collectors; |
| |
| import org.apache.sshd.common.util.GenericUtils; |
| import org.apache.sshd.common.util.ValidateUtils; |
| import org.apache.sshd.common.util.io.PathScanningMatcher; |
| import org.apache.sshd.sftp.client.SftpClient; |
| import org.apache.sshd.sftp.client.SftpClient.Attributes; |
| import org.apache.sshd.sftp.client.SftpClient.DirEntry; |
| |
| /** |
| * Uses an {@link SftpClient} to scan a directory (possibly recursively) and find files that match a given set of |
| * inclusion patterns. |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public class SftpClientDirectoryScanner extends PathScanningMatcher { |
| protected String basedir; |
| |
| public SftpClientDirectoryScanner() { |
| this(true); |
| } |
| |
| public SftpClientDirectoryScanner(boolean caseSensitive) { |
| setSeparator("/"); |
| setCaseSensitive(caseSensitive); |
| } |
| |
| public SftpClientDirectoryScanner(String dir) { |
| this(dir, Collections.emptyList()); |
| } |
| |
| public SftpClientDirectoryScanner(String dir, String... includes) { |
| this(dir, GenericUtils.isEmpty(includes) ? Collections.emptyList() : Arrays.asList(includes)); |
| } |
| |
| public SftpClientDirectoryScanner(String dir, Collection<String> includes) { |
| this(); |
| |
| setBasedir(dir); |
| setIncludes(includes); |
| } |
| |
| public String getBasedir() { |
| return basedir; |
| } |
| |
| /** |
| * @param basedir The base directory from which to start scanning. <B>Note:</B> it is converted to its canonical |
| * form when scanning. May not be {@code null}/empty |
| */ |
| public void setBasedir(String basedir) { |
| this.basedir = ValidateUtils.checkNotNullAndNotEmpty(basedir, "No base directory provided"); |
| } |
| |
| @Override |
| public String getSeparator() { |
| return "/"; |
| } |
| |
| @Override |
| public void setSeparator(String separator) { |
| ValidateUtils.checkState("/".equals(separator), "Invalid separator: '%s'", separator); |
| super.setSeparator(separator); |
| } |
| |
| @Override |
| public void setIncludes(Collection<String> includes) { |
| this.includePatterns = GenericUtils.isEmpty(includes) |
| ? Collections.emptyList() |
| : Collections.unmodifiableList( |
| includes.stream() |
| .map(SftpPathDirectoryScanner::adjustPattern) |
| .collect(Collectors.toCollection(() -> new ArrayList<>(includes.size())))); |
| } |
| |
| /** |
| * Scans the current {@link #getBasedir() basedir} |
| * |
| * @param client The {@link SftpClient} instance to use |
| * @return A {@link Collection} of {@link ScanDirEntry}-ies matching the {@link #getIncludes() |
| * inclusion patterns} |
| * @throws IOException If failed to access the remote file system |
| * @throws IllegalStateException If illegal/missing base directory, or missing inclusion patterns, or specified base |
| * path is not a directory |
| */ |
| public Collection<ScanDirEntry> scan(SftpClient client) throws IOException, IllegalStateException { |
| return scan(client, LinkedList::new); |
| } |
| |
| public <C extends Collection<ScanDirEntry>> C scan( |
| SftpClient client, Supplier<? extends C> factory) |
| throws IOException, IllegalStateException { |
| String rootDir = getBasedir(); |
| ValidateUtils.checkState(GenericUtils.isNotEmpty(rootDir), "No basedir set"); |
| rootDir = client.canonicalPath(rootDir); |
| |
| Attributes attrs = client.stat(rootDir); |
| if (attrs == null) { |
| throw new IllegalStateException("basedir " + rootDir + " does not exist"); |
| } |
| |
| if (!attrs.isDirectory()) { |
| throw new IllegalStateException("basedir " + rootDir + " is not a directory"); |
| } |
| |
| if (GenericUtils.isEmpty(getIncludes())) { |
| throw new IllegalStateException("No includes set for " + rootDir); |
| } |
| |
| return scandir(client, rootDir, "", factory.get()); |
| } |
| |
| /** |
| * @param <C> Generic collection type |
| * @param client The {@link SftpClient} instance to use |
| * @param rootDir The <U>absolute</U> path of the folder to read |
| * @param parent The <U>relative</U> parent of the folder to read - may be empty for base directory |
| * @param filesList The (never {@code null}) {@link Collection} of {@link ScanDirEntry}-ies to update |
| * @return The updated {@link Collection} of {@link ScanDirEntry}-ies |
| * @throws IOException If failed to access remote file system |
| */ |
| protected <C extends Collection<ScanDirEntry>> C scandir( |
| SftpClient client, String rootDir, String parent, C filesList) |
| throws IOException { |
| Collection<DirEntry> entries = client.readEntries(rootDir); |
| if (GenericUtils.isEmpty(entries)) { |
| return filesList; |
| } |
| |
| for (DirEntry de : entries) { |
| String name = de.getFilename(); |
| if (".".equals(name) || "..".equals(name)) { |
| continue; |
| } |
| |
| Attributes attrs = de.getAttributes(); |
| if (attrs.isDirectory()) { |
| if (isIncluded(name)) { |
| String fullPath = createRelativePath(rootDir, name); |
| String relPath = createRelativePath(parent, name); |
| filesList.add(new ScanDirEntry(fullPath, relPath, de)); |
| scandir(client, fullPath, relPath, filesList); |
| } else if (couldHoldIncluded(name)) { |
| scandir(client, createRelativePath(rootDir, name), createRelativePath(parent, name), filesList); |
| } |
| } else if (attrs.isRegularFile()) { |
| if (isIncluded(name)) { |
| filesList.add(new ScanDirEntry(createRelativePath(rootDir, name), createRelativePath(parent, name), de)); |
| } |
| } |
| } |
| |
| return filesList; |
| } |
| |
| protected String createRelativePath(String parent, String name) { |
| if (GenericUtils.isEmpty(parent)) { |
| return name; |
| } else { |
| return parent + getSeparator() + name; |
| } |
| } |
| |
| /** |
| * The result of a scan |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public static class ScanDirEntry extends DirEntry { |
| private final String fullPath; |
| private final String relativePath; |
| |
| public ScanDirEntry(String fullPath, String relativePath, DirEntry dirEntry) { |
| super(dirEntry); |
| this.fullPath = fullPath; |
| this.relativePath = relativePath; |
| } |
| |
| /** |
| * @return The full path represented by this entry |
| */ |
| public String getFullPath() { |
| return fullPath; |
| } |
| |
| /** |
| * @return The relative path from the base directory used for scanning |
| */ |
| public String getRelativePath() { |
| return relativePath; |
| } |
| |
| @Override |
| public String toString() { |
| return getFullPath() + " - " + super.toString(); |
| } |
| } |
| } |