/*
* The MIT License
*
* Copyright (c) 2004-2010, Sun Microsystems, Inc., Kohsuke Kawaguchi,
* Eric Lefevre-Ardant, Erik Ramfelt, Michael B. Donohue, Alan Harder,
* Manufacture Francaise des Pneumatiques Michelin, Romain Seguy
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package hudson;
import hudson.Launcher.LocalLauncher;
import hudson.Launcher.RemoteLauncher;
import jenkins.model.Jenkins;
import hudson.model.TaskListener;
import hudson.model.AbstractProject;
import hudson.model.Item;
import hudson.remoting.Callable;
import hudson.remoting.Channel;
import hudson.remoting.DelegatingCallable;
import hudson.remoting.Future;
import hudson.remoting.Pipe;
import hudson.remoting.RemoteOutputStream;
import hudson.remoting.VirtualChannel;
import hudson.remoting.RemoteInputStream;
import hudson.remoting.Which;
import hudson.security.AccessControlled;
import hudson.util.DirScanner;
import hudson.util.IOException2;
import hudson.util.HeadBufferingStream;
import hudson.util.FormValidation;
import hudson.util.IOUtils;
import static hudson.Util.*;
import static hudson.util.jna.GNUCLibrary.LIBC;
import static hudson.FilePath.TarCompression.GZIP;
import hudson.org.apache.tools.tar.TarInputStream;
import hudson.util.io.Archiver;
import hudson.util.io.ArchiverFactory;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Copy;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.tar.TarEntry;
import org.apache.commons.io.input.CountingInputStream;
import org.apache.commons.fileupload.FileItem;
import org.kohsuke.stapler.Stapler;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.lang.reflect.Field;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.Arrays;
import java.util.Comparator;
import java.util.logging.Level;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.zip.GZIPOutputStream;
import java.util.zip.GZIPInputStream;
import com.sun.jna.Native;
import java.util.Enumeration;
import java.util.logging.Logger;
import org.apache.tools.ant.taskdefs.Chmod;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipEntry;
/**
* {@link File} like object with remoting support.
*
* <p>
* Unlike {@link File}, which always implies a file path on the current computer,
* {@link FilePath} represents a file path on a specific slave or the master.
*
* Despite that, {@link FilePath} can be used much like {@link File}. It exposes
* a bunch of operations (and we should add more operations as long as they are
* generally useful), and when invoked against a file on a remote node, {@link FilePath}
* executes the necessary code remotely, thereby providing semi-transparent file
* operations.
*
* <h2>Using {@link FilePath} smartly</h2>
* <p>
* The transparency makes it easy to write plugins without worrying too much about
* remoting, by making it works like NFS, where remoting happens at the file-system
* layer.
*
* <p>
* But one should note that such use of remoting may not be optional. Sometimes,
* it makes more sense to move some computation closer to the data, as opposed to
* move the data to the computation. For example, if you are just computing a MD5
* digest of a file, then it would make sense to do the digest on the host where
* the file is located, as opposed to send the whole data to the master and do MD5
* digesting there.
*
* <p>
* {@link FilePath} supports this "code migration" by in the
* {@link #act(FileCallable)} method. One can pass in a custom implementation
* of {@link FileCallable}, to be executed on the node where the data is located.
* The following code shows the example:
*
* <pre>
* FilePath file = ...;
*
* // make 'file' a fresh empty directory.
* file.act(new FileCallable<Void>() {
* // if 'file' is on a different node, this FileCallable will
* // be transfered to that node and executed there.
* public Void invoke(File f,VirtualChannel channel) {
* // f and file represents the same thing
* f.deleteContents();
* f.mkdirs();
* }
* });
* </pre>
*
* <p>
* When {@link FileCallable} is transfered to a remote node, it will be done so
* by using the same Java serialization scheme that the remoting module uses.
* See {@link Channel} for more about this.
*
* <p>
* {@link FilePath} itself can be sent over to a remote node as a part of {@link Callable}
* serialization. For example, sending a {@link FilePath} of a remote node to that
* node causes {@link FilePath} to become "local". Similarly, sending a
* {@link FilePath} that represents the local computer causes it to become "remote."
*
* @author Kohsuke Kawaguchi
*/
public final class FilePath implements Serializable {
/**
* When this {@link FilePath} represents the remote path,
* this field is always non-null on master (the field represents
* the channel to the remote slave.) When transferred to a slave via remoting,
* this field reverts back to null, since it's transient.
*
* When this {@link FilePath} represents a path on the master,
* this field is null on master. When transferred to a slave via remoting,
* this field becomes non-null, representing the {@link Channel}
* back to the master.
*
* This is used to determine whether we are running on the master or the slave.
*/
private transient VirtualChannel channel;
// since the platform of the slave might be different, can't use java.io.File
private final String remote;
/**
* Creates a {@link FilePath} that represents a path on the given node.
*
* @param channel
* To create a path that represents a remote path, pass in a {@link Channel}
* that's connected to that machine. If null, that means the local file path.
*/
public FilePath(VirtualChannel channel, String remote) {
this.channel = channel;
this.remote = normalize(remote);
}
/**
* To create {@link FilePath} that represents a "local" path.
*
* <p>
* A "local" path means a file path on the computer where the
* constructor invocation happened.
*/
public FilePath(File localPath) {
this.channel = null;
this.remote = normalize(localPath.getPath());
}
/**
* Construct a path starting with a base location.
* @param base starting point for resolution, and defines channel
* @param rel a path which if relative will be resolved against base
*/
public FilePath(FilePath base, String rel) {
this.channel = base.channel;
this.remote = normalize(resolvePathIfRelative(base, rel));
}
private String resolvePathIfRelative(FilePath base, String rel) {
if(isAbsolute(rel)) return rel;
if(base.isUnix()) {
// shouldn't need this replace, but better safe than sorry
return base.remote+'/'+rel.replace('\\','/');
} else {
// need this replace, see Slave.getWorkspaceFor and AbstractItem.getFullName, nested jobs on Windows
// slaves will always have a rel containing at least one '/' character. JENKINS-13649
return base.remote+'\\'+rel.replace('/','\\');
}
}
/**
* Is the given path name an absolute path?
*/
private static boolean isAbsolute(String rel) {
return rel.startsWith("/") || DRIVE_PATTERN.matcher(rel).matches();
}
private static final Pattern DRIVE_PATTERN = Pattern.compile("[A-Za-z]:[\\\\/].*"),
ABSOLUTE_PREFIX_PATTERN = Pattern.compile("^(\\\\\\\\|(?:[A-Za-z]:)?[\\\\/])[\\\\/]*");
/**
* {@link File#getParent()} etc cannot handle ".." and "." in the path component very well,
* so remove them.
*/
private static String normalize(String path) {
StringBuilder buf = new StringBuilder();
// Check for prefix designating absolute path
Matcher m = ABSOLUTE_PREFIX_PATTERN.matcher(path);
if (m.find()) {
buf.append(m.group(1));
path = path.substring(m.end());
}
boolean isAbsolute = buf.length() > 0;
// Split remaining path into tokens, trimming any duplicate or trailing separators
List<String> tokens = new ArrayList<String>();
int s = 0, end = path.length();
for (int i = 0; i < end; i++) {
char c = path.charAt(i);
if (c == '/' || c == '\\') {
tokens.add(path.substring(s, i));
s = i;
// Skip any extra separator chars
while (++i < end && ((c = path.charAt(i)) == '/' || c == '\\')) { }
// Add token for separator unless we reached the end
if (i < end) tokens.add(path.substring(s, s+1));
s = i;
}
}
if (s < end) tokens.add(path.substring(s));
// Look through tokens for "." or ".."
for (int i = 0; i < tokens.size();) {
String token = tokens.get(i);
if (token.equals(".")) {
tokens.remove(i);
if (tokens.size() > 0)
tokens.remove(i > 0 ? i - 1 : i);
} else if (token.equals("..")) {
if (i == 0) {
// If absolute path, just remove: /../something
// If relative path, not collapsible so leave as-is
tokens.remove(0);
if (tokens.size() > 0) token += tokens.remove(0);
if (!isAbsolute) buf.append(token);
} else {
// Normalize: remove something/.. plus separator before/after
i -= 2;
for (int j = 0; j < 3; j++) tokens.remove(i);
if (i > 0) tokens.remove(i-1);
else if (tokens.size() > 0) tokens.remove(0);
}
} else
i += 2;
}
// Recombine tokens
for (String token : tokens) buf.append(token);
if (buf.length() == 0) buf.append('.');
return buf.toString();
}
/**
* Checks if the remote path is Unix.
*/
boolean isUnix() {
// if the path represents a local path, there' no need to guess.
if(!isRemote())
return File.pathSeparatorChar!=';';
// note that we can't use the usual File.pathSeparator and etc., as the OS of
// the machine where this code runs and the OS that this FilePath refers to may be different.
// Windows absolute path is 'X:\...', so this is usually a good indication of Windows path
if(remote.length()>3 && remote.charAt(1)==':' && remote.charAt(2)=='\\')
return false;
// Windows can handle '/' as a path separator but Unix can't,
// so err on Unix side
return remote.indexOf("\\")==-1;
}
/**
* Gets the full path of the file on the remote machine.
*
*/
public String getRemote() {
return remote;
}
/**
* Creates a zip file from this directory or a file and sends that to the given output stream.
*
* @deprecated as of 1.315. Use {@link #zip(OutputStream)} that has more consistent name.
*/
public void createZipArchive(OutputStream os) throws IOException, InterruptedException {
zip(os);
}
/**
* Creates a zip file from this directory or a file and sends that to the given output stream.
*/
public void zip(OutputStream os) throws IOException, InterruptedException {
zip(os,(FileFilter)null);
}
public void zip(FilePath dst) throws IOException, InterruptedException {
OutputStream os = dst.write();
try {
zip(os);
} finally {
os.close();
}
}
/**
* Creates a zip file from this directory by using the specified filter,
* and sends the result to the given output stream.
*
* @param filter
* Must be serializable since it may be executed remotely. Can be null to add all files.
*
* @since 1.315
*/
public void zip(OutputStream os, FileFilter filter) throws IOException, InterruptedException {
archive(ArchiverFactory.ZIP,os,filter);
}
/**
* Creates a zip file from this directory by only including the files that match the given glob.
*
* @param glob
* Ant style glob, like "**/*.xml". If empty or null, this method
* works like {@link #createZipArchive(OutputStream)}
*
* @since 1.129
* @deprecated as of 1.315
* Use {@link #zip(OutputStream,String)} that has more consistent name.
*/
public void createZipArchive(OutputStream os, final String glob) throws IOException, InterruptedException {
archive(ArchiverFactory.ZIP,os,glob);
}
/**
* Creates a zip file from this directory by only including the files that match the given glob.
*
* @param glob
* Ant style glob, like "**/*.xml". If empty or null, this method
* works like {@link #createZipArchive(OutputStream)}
*
* @since 1.315
*/
public void zip(OutputStream os, final String glob) throws IOException, InterruptedException {
archive(ArchiverFactory.ZIP,os,glob);
}
/**
* Uses the given scanner on 'this' directory to list up files and then archive it to a zip stream.
*/
public int zip(OutputStream out, DirScanner scanner) throws IOException, InterruptedException {
return archive(ArchiverFactory.ZIP, out, scanner);
}
/**
* Archives this directory into the specified archive format, to the given {@link OutputStream}, by using
* {@link DirScanner} to choose what files to include.
*
* @return
* number of files/directories archived. This is only really useful to check for a situation where nothing
* is archived.
*/
public int archive(final ArchiverFactory factory, OutputStream os, final DirScanner scanner) throws IOException, InterruptedException {
final OutputStream out = (channel!=null)?new RemoteOutputStream(os):os;
return act(new FileCallable<Integer>() {
public Integer invoke(File f, VirtualChannel channel) throws IOException {
Archiver a = factory.create(out);
try {
scanner.scan(f,a);
} finally {
a.close();
}
return a.countEntries();
}
private static final long serialVersionUID = 1L;
});
}
public int archive(final ArchiverFactory factory, OutputStream os, final FileFilter filter) throws IOException, InterruptedException {
return archive(factory,os,new DirScanner.Filter(filter));
}
public int archive(final ArchiverFactory factory, OutputStream os, final String glob) throws IOException, InterruptedException {
return archive(factory,os,new DirScanner.Glob(glob,null));
}
/**
* When this {@link FilePath} represents a zip file, extracts that zip file.
*
* @param target
* Target directory to expand files to. All the necessary directories will be created.
* @since 1.248
* @see #unzipFrom(InputStream)
*/
public void unzip(final FilePath target) throws IOException, InterruptedException {
target.act(new FileCallable<Void>() {
public Void invoke(File dir, VirtualChannel channel) throws IOException {
if (FilePath.this.isRemote())
unzip(dir, FilePath.this.read()); // use streams
else
unzip(dir, new File(FilePath.this.getRemote())); // shortcut to local file
return null;
}
private static final long serialVersionUID = 1L;
});
}
/**
* When this {@link FilePath} represents a tar file, extracts that tar file.
*
* @param target
* Target directory to expand files to. All the necessary directories will be created.
* @param compression
* Compression mode of this tar file.
* @since 1.292
* @see #untarFrom(InputStream, TarCompression)
*/
public void untar(final FilePath target, final TarCompression compression) throws IOException, InterruptedException {
target.act(new FileCallable<Void>() {
public Void invoke(File dir, VirtualChannel channel) throws IOException {
readFromTar(FilePath.this.getName(),dir,compression.extract(FilePath.this.read()));
return null;
}
private static final long serialVersionUID = 1L;
});
}
/**
* Reads the given InputStream as a zip file and extracts it into this directory.
*
* @param _in
* The stream will be closed by this method after it's fully read.
* @since 1.283
* @see #unzip(FilePath)
*/
public void unzipFrom(InputStream _in) throws IOException, InterruptedException {
final InputStream in = new RemoteInputStream(_in);
act(new FileCallable<Void>() {
public Void invoke(File dir, VirtualChannel channel) throws IOException {
unzip(dir, in);
return null;
}
private static final long serialVersionUID = 1L;
});
}
private void unzip(File dir, InputStream in) throws IOException {
File tmpFile = File.createTempFile("tmpzip", null); // uses java.io.tmpdir
try {
IOUtils.copy(in, tmpFile);
unzip(dir,tmpFile);
}
finally {
tmpFile.delete();
}
}
private void unzip(File dir, File zipFile) throws IOException {
dir = dir.getAbsoluteFile(); // without absolutization, getParentFile below seems to fail
ZipFile zip = new ZipFile(zipFile);
@SuppressWarnings("unchecked")
Enumeration<ZipEntry> entries = zip.getEntries();
try {
while (entries.hasMoreElements()) {
ZipEntry e = entries.nextElement();
File f = new File(dir, e.getName());
if (e.isDirectory()) {
f.mkdirs();
} else {
File p = f.getParentFile();
if (p != null) {
p.mkdirs();
}
IOUtils.copy(zip.getInputStream(e), f);
try {
FilePath target = new FilePath(f);
int mode = e.getUnixMode();
if (mode!=0) // Ant returns 0 if the archive doesn't record the access mode
target.chmod(mode);
} catch (InterruptedException ex) {
LOGGER.log(Level.WARNING, "unable to set permissions", ex);
}
f.setLastModified(e.getTime());
}
}
} finally {
zip.close();
}
}
/**
* Absolutizes this {@link FilePath} and returns the new one.
*/
public FilePath absolutize() throws IOException, InterruptedException {
return new FilePath(channel,act(new FileCallable<String>() {
public String invoke(File f, VirtualChannel channel) throws IOException {
return f.getAbsolutePath();
}
}));
}
/**
* Creates a symlink to the specified target.
*
* @param target
* The file that the symlink should point to.
* @param listener
* If symlink creation requires a help of an external process, the error will be reported here.
* @since 1.456
*/
public void symlinkTo(final String target, final TaskListener listener) throws IOException, InterruptedException {
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException, InterruptedException {
Util.createSymlink(f.getParentFile(),target,f.getName(),listener);
return null;
}
});
}
/**
* Resolves symlink, if the given file is a symlink. Otherwise return null.
* <p>
* If the resolution fails, report an error.
*
* @since 1.456
*/
public String readLink() throws IOException, InterruptedException {
return act(new FileCallable<String>() {
public String invoke(File f, VirtualChannel channel) throws IOException, InterruptedException {
return Util.resolveSymlink(f);
}
});
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
FilePath that = (FilePath) o;
if (channel != null ? !channel.equals(that.channel) : that.channel != null) return false;
return remote.equals(that.remote);
}
@Override
public int hashCode() {
return 31 * (channel != null ? channel.hashCode() : 0) + remote.hashCode();
}
/**
* Supported tar file compression methods.
*/
public enum TarCompression {
NONE {
public InputStream extract(InputStream in) {
return in;
}
public OutputStream compress(OutputStream out) {
return out;
}
},
GZIP {
public InputStream extract(InputStream _in) throws IOException {
HeadBufferingStream in = new HeadBufferingStream(_in,SIDE_BUFFER_SIZE);
try {
return new GZIPInputStream(in,8192);
} catch (IOException e) {
// various people reported "java.io.IOException: Not in GZIP format" here, so diagnose this problem better
in.fillSide();
throw new IOException2(e.getMessage()+"\nstream="+Util.toHexString(in.getSideBuffer()),e);
}
}
public OutputStream compress(OutputStream out) throws IOException {
return new GZIPOutputStream(new BufferedOutputStream(out));
}
};
public abstract InputStream extract(InputStream in) throws IOException;
public abstract OutputStream compress(OutputStream in) throws IOException;
}
/**
* Reads the given InputStream as a tar file and extracts it into this directory.
*
* @param _in
* The stream will be closed by this method after it's fully read.
* @param compression
* The compression method in use.
* @since 1.292
*/
public void untarFrom(InputStream _in, final TarCompression compression) throws IOException, InterruptedException {
try {
final InputStream in = new RemoteInputStream(_in);
act(new FileCallable<Void>() {
public Void invoke(File dir, VirtualChannel channel) throws IOException {
readFromTar("input stream",dir, compression.extract(in));
return null;
}
private static final long serialVersionUID = 1L;
});
} finally {
IOUtils.closeQuietly(_in);
}
}
/**
* Given a tgz/zip file, extracts it to the given target directory, if necessary.
*
* <p>
* This method is a convenience method designed for installing a binary package to a location
* that supports upgrade and downgrade. Specifically,
*
* <ul>
* <li>If the target directory doesn't exist {@linkplain #mkdirs() it'll be created}.
* <li>The timestamp of the .tgz file is left in the installation directory upon extraction.
* <li>If the timestamp left in the directory doesn't match with the timestamp of the current archive file,
* the directory contents will be discarded and the archive file will be re-extracted.
* <li>If the connection is refused but the target directory already exists, it is left alone.
* </ul>
*
* @param archive
* The resource that represents the tgz/zip file. This URL must support the "Last-Modified" header.
* (Most common usage is to get this from {@link ClassLoader#getResource(String)})
* @param listener
* If non-null, a message will be printed to this listener once this method decides to
* extract an archive.
* @return
* true if the archive was extracted. false if the extraction was skipped because the target directory
* was considered up to date.
* @since 1.299
*/
public boolean installIfNecessaryFrom(URL archive, TaskListener listener, String message) throws IOException, InterruptedException {
try {
URLConnection con;
try {
con = ProxyConfiguration.open(archive);
con.connect();
} catch (IOException x) {
if (this.exists()) {
// Cannot connect now, so assume whatever was last unpacked is still OK.
if (listener != null) {
listener.getLogger().println("Skipping installation of " + archive + " to " + remote + ": " + x);
}
return false;
} else {
throw x;
}
}
long sourceTimestamp = con.getLastModified();
FilePath timestamp = this.child(".timestamp");
if(this.exists()) {
if(timestamp.exists() && sourceTimestamp ==timestamp.lastModified())
return false; // already up to date
this.deleteContents();
} else {
this.mkdirs();
}
if(listener!=null)
listener.getLogger().println(message);
// for HTTP downloads, enable automatic retry for added resilience
InputStream in = archive.getProtocol().startsWith("http") ? ProxyConfiguration.getInputStream(archive) : con.getInputStream();
CountingInputStream cis = new CountingInputStream(in);
try {
if(archive.toExternalForm().endsWith(".zip"))
unzipFrom(cis);
else
untarFrom(cis,GZIP);
} catch (IOException e) {
throw new IOException2(String.format("Failed to unpack %s (%d bytes read of total %d)",
archive,cis.getByteCount(),con.getContentLength()),e);
}
timestamp.touch(sourceTimestamp);
return true;
} catch (IOException e) {
throw new IOException2("Failed to install "+archive+" to "+remote,e);
}
}
/**
* Reads the URL on the current VM, and writes all the data to this {@link FilePath}
* (this is different from resolving URL remotely.)
*
* @since 1.293
*/
public void copyFrom(URL url) throws IOException, InterruptedException {
InputStream in = url.openStream();
try {
copyFrom(in);
} finally {
in.close();
}
}
/**
* Replaces the content of this file by the data from the given {@link InputStream}.
*
* @since 1.293
*/
public void copyFrom(InputStream in) throws IOException, InterruptedException {
OutputStream os = write();
try {
IOUtils.copy(in, os);
} finally {
os.close();
}
}
/**
* Convenience method to call {@link FilePath#copyTo(FilePath)}.
*
* @since 1.311
*/
public void copyFrom(FilePath src) throws IOException, InterruptedException {
src.copyTo(this);
}
/**
* Place the data from {@link FileItem} into the file location specified by this {@link FilePath} object.
*/
public void copyFrom(FileItem file) throws IOException, InterruptedException {
if(channel==null) {
try {
file.write(new File(remote));
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException2(e);
}
} else {
InputStream i = file.getInputStream();
OutputStream o = write();
try {
IOUtils.copy(i,o);
} finally {
try {
o.close();
} finally {
i.close();
}
}
}
}
/**
* Code that gets executed on the machine where the {@link FilePath} is local.
* Used to act on {@link FilePath}.
*
* @see FilePath#act(FileCallable)
*/
public interface FileCallable<T> extends Serializable {
/**
* Performs the computational task on the node where the data is located.
*
* <p>
* All the exceptions are forwarded to the caller.
*
* @param f
* {@link File} that represents the local file that {@link FilePath} has represented.
* @param channel
* The "back pointer" of the {@link Channel} that represents the communication
* with the node from where the code was sent.
*/
T invoke(File f, VirtualChannel channel) throws IOException, InterruptedException;
}
/**
* Executes some program on the machine that this {@link FilePath} exists,
* so that one can perform local file operations.
*/
public <T> T act(final FileCallable<T> callable) throws IOException, InterruptedException {
return act(callable,callable.getClass().getClassLoader());
}
private <T> T act(final FileCallable<T> callable, ClassLoader cl) throws IOException, InterruptedException {
if(channel!=null) {
// run this on a remote system
try {
return channel.call(new FileCallableWrapper<T>(callable,cl));
} catch (TunneledInterruptedException e) {
throw (InterruptedException)new InterruptedException().initCause(e);
} catch (AbortException e) {
throw e; // pass through so that the caller can catch it as AbortException
} catch (IOException e) {
// wrap it into a new IOException so that we get the caller's stack trace as well.
throw new IOException2("remote file operation failed: "+remote+" at "+channel,e);
}
} else {
// the file is on the local machine.
return callable.invoke(new File(remote), Jenkins.MasterComputer.localChannel);
}
}
/**
* Executes some program on the machine that this {@link FilePath} exists,
* so that one can perform local file operations.
*/
public <T> Future<T> actAsync(final FileCallable<T> callable) throws IOException, InterruptedException {
try {
return (channel!=null ? channel : Jenkins.MasterComputer.localChannel)
.callAsync(new FileCallableWrapper<T>(callable));
} catch (IOException e) {
// wrap it into a new IOException so that we get the caller's stack trace as well.
throw new IOException2("remote file operation failed",e);
}
}
/**
* Executes some program on the machine that this {@link FilePath} exists,
* so that one can perform local file operations.
*/
public <V,E extends Throwable> V act(Callable<V,E> callable) throws IOException, InterruptedException, E {
if(channel!=null) {
// run this on a remote system
return channel.call(callable);
} else {
// the file is on the local machine
return callable.call();
}
}
/**
* Converts this file to the URI, relative to the machine
* on which this file is available.
*/
public URI toURI() throws IOException, InterruptedException {
return act(new FileCallable<URI>() {
public URI invoke(File f, VirtualChannel channel) {
return f.toURI();
}
});
}
/**
* Creates this directory.
*/
public void mkdirs() throws IOException, InterruptedException {
if(!act(new FileCallable<Boolean>() {
public Boolean invoke(File f, VirtualChannel channel) throws IOException, InterruptedException {
if(f.mkdirs() || f.exists())
return true; // OK
// following Ant <mkdir> task to avoid possible race condition.
Thread.sleep(10);
return f.mkdirs() || f.exists();
}
}))
throw new IOException("Failed to mkdirs: "+remote);
}
/**
* Deletes this directory, including all its contents recursively.
*/
public void deleteRecursive() throws IOException, InterruptedException {
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
Util.deleteRecursive(f);
return null;
}
});
}
/**
* Deletes all the contents of this directory, but not the directory itself
*/
public void deleteContents() throws IOException, InterruptedException {
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
Util.deleteContentsRecursive(f);
return null;
}
});
}
/**
* Gets the file name portion except the extension.
*
* For example, "foo" for "foo.txt" and "foo.tar" for "foo.tar.gz".
*/
public String getBaseName() {
String n = getName();
int idx = n.lastIndexOf('.');
if (idx<0) return n;
return n.substring(0,idx);
}
/**
* Gets just the file name portion without directories.
*
* For example, "foo.txt" for "../abc/foo.txt"
*/
public String getName() {
String r = remote;
if(r.endsWith("\\") || r.endsWith("/"))
r = r.substring(0,r.length()-1);
int len = r.length()-1;
while(len>=0) {
char ch = r.charAt(len);
if(ch=='\\' || ch=='/')
break;
len--;
}
return r.substring(len+1);
}
/**
* Short for {@code getParent().child(rel)}. Useful for getting other files in the same directory.
*/
public FilePath sibling(String rel) {
return getParent().child(rel);
}
/**
* Returns a {@link FilePath} by adding the given suffix to this path name.
*/
public FilePath withSuffix(String suffix) {
return new FilePath(channel,remote+suffix);
}
/**
* The same as {@link FilePath#FilePath(FilePath,String)} but more OO.
* @param rel a relative or absolute path
* @return a file on the same channel
*/
public FilePath child(String rel) {
return new FilePath(this,rel);
}
/**
* Gets the parent file.
* @return parent FilePath or null if there is no parent
*/
public FilePath getParent() {
int i = remote.length() - 2;
for (; i >= 0; i--) {
char ch = remote.charAt(i);
if(ch=='\\' || ch=='/')
break;
}
return i >= 0 ? new FilePath( channel, remote.substring(0,i+1) ) : null;
}
/**
* Creates a temporary file in the directory that this {@link FilePath} object designates.
*
* @param prefix
* The prefix string to be used in generating the file's name; must be
* at least three characters long
* @param suffix
* The suffix string to be used in generating the file's name; may be
* null, in which case the suffix ".tmp" will be used
* @return
* The new FilePath pointing to the temporary file
* @see File#createTempFile(String, String)
*/
public FilePath createTempFile(final String prefix, final String suffix) throws IOException, InterruptedException {
try {
return new FilePath(this,act(new FileCallable<String>() {
public String invoke(File dir, VirtualChannel channel) throws IOException {
File f = File.createTempFile(prefix, suffix, dir);
return f.getName();
}
}));
} catch (IOException e) {
throw new IOException2("Failed to create a temp file on "+remote,e);
}
}
/**
* Creates a temporary file in this directory and set the contents to the
* given text (encoded in the platform default encoding)
*
* @param prefix
* The prefix string to be used in generating the file's name; must be
* at least three characters long
* @param suffix
* The suffix string to be used in generating the file's name; may be
* null, in which case the suffix ".tmp" will be used
* @param contents
* The initial contents of the temporary file.
* @return
* The new FilePath pointing to the temporary file
* @see File#createTempFile(String, String)
*/
public FilePath createTextTempFile(final String prefix, final String suffix, final String contents) throws IOException, InterruptedException {
return createTextTempFile(prefix,suffix,contents,true);
}
/**
* Creates a temporary file in this directory (or the system temporary
* directory) and set the contents to the given text (encoded in the
* platform default encoding)
*
* @param prefix
* The prefix string to be used in generating the file's name; must be
* at least three characters long
* @param suffix
* The suffix string to be used in generating the file's name; may be
* null, in which case the suffix ".tmp" will be used
* @param contents
* The initial contents of the temporary file.
* @param inThisDirectory
* If true, then create this temporary in the directory pointed to by
* this.
* If false, then the temporary file is created in the system temporary
* directory (java.io.tmpdir)
* @return
* The new FilePath pointing to the temporary file
* @see File#createTempFile(String, String)
*/
public FilePath createTextTempFile(final String prefix, final String suffix, final String contents, final boolean inThisDirectory) throws IOException, InterruptedException {
try {
return new FilePath(channel,act(new FileCallable<String>() {
public String invoke(File dir, VirtualChannel channel) throws IOException {
if(!inThisDirectory)
dir = new File(System.getProperty("java.io.tmpdir"));
else
dir.mkdirs();
File f;
try {
f = File.createTempFile(prefix, suffix, dir);
} catch (IOException e) {
throw new IOException2("Failed to create a temporary directory in "+dir,e);
}
Writer w = new FileWriter(f);
w.write(contents);
w.close();
return f.getAbsolutePath();
}
}));
} catch (IOException e) {
throw new IOException2("Failed to create a temp file on "+remote,e);
}
}
/**
* Creates a temporary directory inside the directory represented by 'this'
*
* @param prefix
* The prefix string to be used in generating the directory's name;
* must be at least three characters long
* @param suffix
* The suffix string to be used in generating the directory's name; may
* be null, in which case the suffix ".tmp" will be used
* @return
* The new FilePath pointing to the temporary directory
* @since 1.311
* @see File#createTempFile(String, String)
*/
public FilePath createTempDir(final String prefix, final String suffix) throws IOException, InterruptedException {
try {
return new FilePath(this,act(new FileCallable<String>() {
public String invoke(File dir, VirtualChannel channel) throws IOException {
File f = File.createTempFile(prefix, suffix, dir);
f.delete();
f.mkdir();
return f.getName();
}
}));
} catch (IOException e) {
throw new IOException2("Failed to create a temp directory on "+remote,e);
}
}
/**
* Deletes this file.
* @throws IOException if it exists but could not be successfully deleted
* @return true, for a modicum of compatibility
*/
public boolean delete() throws IOException, InterruptedException {
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
Util.deleteFile(f);
return null;
}
});
return true;
}
/**
* Checks if the file exists.
*/
public boolean exists() throws IOException, InterruptedException {
return act(new FileCallable<Boolean>() {
public Boolean invoke(File f, VirtualChannel channel) throws IOException {
return f.exists();
}
});
}
/**
* Gets the last modified time stamp of this file, by using the clock
* of the machine where this file actually resides.
*
* @see File#lastModified()
* @see #touch(long)
*/
public long lastModified() throws IOException, InterruptedException {
return act(new FileCallable<Long>() {
public Long invoke(File f, VirtualChannel channel) throws IOException {
return f.lastModified();
}
});
}
/**
* Creates a file (if not already exist) and sets the timestamp.
*
* @since 1.299
*/
public void touch(final long timestamp) throws IOException, InterruptedException {
act(new FileCallable<Void>() {
private static final long serialVersionUID = -5094638816500738429L;
public Void invoke(File f, VirtualChannel channel) throws IOException {
if(!f.exists())
new FileOutputStream(f).close();
if(!f.setLastModified(timestamp))
throw new IOException("Failed to set the timestamp of "+f+" to "+timestamp);
return null;
}
});
}
private void setLastModifiedIfPossible(final long timestamp) throws IOException, InterruptedException {
String message = act(new FileCallable<String>() {
private static final long serialVersionUID = -828220335793641630L;
public String invoke(File f, VirtualChannel channel) throws IOException {
if(!f.setLastModified(timestamp)) {
if (Functions.isWindows()) {
// On Windows this seems to fail often. See JENKINS-11073
// Therefore don't fail, but just log a warning
return "Failed to set the timestamp of "+f+" to "+timestamp;
} else {
throw new IOException("Failed to set the timestamp of "+f+" to "+timestamp);
}
}
return null;
}
});
if (message!=null) {
LOGGER.warning(message);
}
}
/**
* Checks if the file is a directory.
*/
public boolean isDirectory() throws IOException, InterruptedException {
return act(new FileCallable<Boolean>() {
public Boolean invoke(File f, VirtualChannel channel) throws IOException {
return f.isDirectory();
}
});
}
/**
* Returns the file size in bytes.
*
* @since 1.129
*/
public long length() throws IOException, InterruptedException {
return act(new FileCallable<Long>() {
public Long invoke(File f, VirtualChannel channel) throws IOException {
return f.length();
}
});
}
/**
* Sets the file permission.
*
* On Windows, no-op.
*
* @param mask
* File permission mask. To simplify the permission copying,
* if the parameter is -1, this method becomes no-op.
* @since 1.303
* @see #mode()
*/
public void chmod(final int mask) throws IOException, InterruptedException {
if(!isUnix() || mask==-1) return;
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
_chmod(f, mask);
return null;
}
});
}
/**
* Run chmod via libc if we can, otherwise fall back to Ant.
*/
private static void _chmod(File f, int mask) throws IOException {
if (Functions.isWindows()) return; // noop
try {
if(LIBC.chmod(f.getAbsolutePath(),mask)!=0) {
throw new IOException("Failed to chmod "+f+" : "+LIBC.strerror(Native.getLastError()));
}
} catch(NoClassDefFoundError e) { // cf. https://groups.google.com/group/hudson-dev/browse_thread/thread/6d16c3e8ea0dbc9?hl=fr
_chmodAnt(f, mask);
} catch(UnsatisfiedLinkError e2) { // HUDSON-8155: use Ant's chmod task on non-GNU C systems
_chmodAnt(f, mask);
}
}
private static void _chmodAnt(File f, int mask) {
if (!CHMOD_WARNED) { // only warn this once to avoid flooding the log
CHMOD_WARNED = true;
LOGGER.warning("GNU C Library not available: Using Ant's chmod task instead.");
}
Chmod chmodTask = new Chmod();
chmodTask.setProject(new Project());
chmodTask.setFile(f);
chmodTask.setPerm(Integer.toOctalString(mask));
chmodTask.execute();
}
private static boolean CHMOD_WARNED = false;
/**
* Gets the file permission bit mask.
*
* @return
* -1 on Windows, since such a concept doesn't make sense.
* @since 1.311
* @see #chmod(int)
*/
public int mode() throws IOException, InterruptedException {
if(!isUnix()) return -1;
return act(new FileCallable<Integer>() {
public Integer invoke(File f, VirtualChannel channel) throws IOException {
return IOUtils.mode(f);
}
});
}
/**
* List up files and directories in this directory.
*
* <p>
* This method returns direct children of the directory denoted by the 'this' object.
*/
public List<FilePath> list() throws IOException, InterruptedException {
return list((FileFilter)null);
}
/**
* List up subdirectories.
*
* @return can be empty but never null. Doesn't contain "." and ".."
*/
public List<FilePath> listDirectories() throws IOException, InterruptedException {
return list(new DirectoryFilter());
}
private static final class DirectoryFilter implements FileFilter, Serializable {
public boolean accept(File f) {
return f.isDirectory();
}
private static final long serialVersionUID = 1L;
}
/**
* List up files in this directory, just like {@link File#listFiles(FileFilter)}.
*
* @param filter
* The optional filter used to narrow down the result.
* If non-null, must be {@link Serializable}.
* If this {@link FilePath} represents a remote path,
* the filter object will be executed on the remote machine.
*/
public List<FilePath> list(final FileFilter filter) throws IOException, InterruptedException {
if (filter != null && !(filter instanceof Serializable)) {
throw new IllegalArgumentException("Non-serializable filter of " + filter.getClass());
}
return act(new FileCallable<List<FilePath>>() {
public List<FilePath> invoke(File f, VirtualChannel channel) throws IOException {
File[] children = f.listFiles(filter);
if(children ==null) return null;
ArrayList<FilePath> r = new ArrayList<FilePath>(children.length);
for (File child : children)
r.add(new FilePath(child));
return r;
}
}, (filter!=null?filter:this).getClass().getClassLoader());
}
/**
* List up files in this directory that matches the given Ant-style filter.
*
* @param includes
* See {@link FileSet} for the syntax. String like "foo/*.zip" or "foo/**/*.xml"
* @return
* can be empty but always non-null.
*/
public FilePath[] list(final String includes) throws IOException, InterruptedException {
return list(includes, null);
}
/**
* List up files in this directory that matches the given Ant-style filter.
*
* @param includes
* @param excludes
* See {@link FileSet} for the syntax. String like "foo/*.zip" or "foo/**/*.xml"
* @return
* can be empty but always non-null.
* @since 1.407
*/
public FilePath[] list(final String includes, final String excludes) throws IOException, InterruptedException {
return list(includes, excludes, true);
}
/**
* List up files in this directory that matches the given Ant-style filter.
*
* @param includes
* @param excludes
* See {@link FileSet} for the syntax. String like "foo/*.zip" or "foo/**/*.xml"
* @param defaultExcludes whether to use the ant default excludes
* @return
* can be empty but always non-null.
* @since 1.465
*/
public FilePath[] list(final String includes, final String excludes, final boolean defaultExcludes) throws IOException, InterruptedException {
return act(new FileCallable<FilePath[]>() {
public FilePath[] invoke(File f, VirtualChannel channel) throws IOException {
String[] files = glob(f, includes, excludes, defaultExcludes);
FilePath[] r = new FilePath[files.length];
for( int i=0; i<r.length; i++ )
r[i] = new FilePath(new File(f,files[i]));
return r;
}
});
}
/**
* Runs Ant glob expansion.
*
* @return
* A set of relative file names from the base directory.
*/
private static String[] glob(File dir, String includes, String excludes, boolean defaultExcludes) throws IOException {
if(isAbsolute(includes))
throw new IOException("Expecting Ant GLOB pattern, but saw '"+includes+"'. See http://ant.apache.org/manual/Types/fileset.html for syntax");
FileSet fs = Util.createFileSet(dir,includes,excludes);
fs.setDefaultexcludes(defaultExcludes);
DirectoryScanner ds = fs.getDirectoryScanner(new Project());
String[] files = ds.getIncludedFiles();
return files;
}
/**
* Reads this file.
*/
public InputStream read() throws IOException {
if(channel==null)
return new FileInputStream(new File(remote));
final Pipe p = Pipe.createRemoteToLocal();
channel.callAsync(new Callable<Void,IOException>() {
public Void call() throws IOException {
FileInputStream fis=null;
try {
fis = new FileInputStream(new File(remote));
Util.copyStream(fis,p.getOut());
return null;
} finally {
IOUtils.closeQuietly(fis);
IOUtils.closeQuietly(p.getOut());
}
}
});
return p.getIn();
}
/**
* Reads this file into a string, by using the current system encoding.
*/
public String readToString() throws IOException {
InputStream in = read();
try {
return IOUtils.toString(in);
} finally {
in.close();
}
}
/**
* Writes to this file.
* If this file already exists, it will be overwritten.
* If the directory doesn't exist, it will be created.
*/
public OutputStream write() throws IOException, InterruptedException {
if(channel==null) {
File f = new File(remote).getAbsoluteFile();
f.getParentFile().mkdirs();
return new FileOutputStream(f);
}
return channel.call(new Callable<OutputStream,IOException>() {
public OutputStream call() throws IOException {
File f = new File(remote).getAbsoluteFile();
f.getParentFile().mkdirs();
FileOutputStream fos = new FileOutputStream(f);
return new RemoteOutputStream(fos);
}
});
}
/**
* Overwrites this file by placing the given String as the content.
*
* @param encoding
* Null to use the platform default encoding.
* @since 1.105
*/
public void write(final String content, final String encoding) throws IOException, InterruptedException {
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
f.getParentFile().mkdirs();
FileOutputStream fos = new FileOutputStream(f);
Writer w = encoding != null ? new OutputStreamWriter(fos, encoding) : new OutputStreamWriter(fos);
try {
w.write(content);
} finally {
w.close();
}
return null;
}
});
}
/**
* Computes the MD5 digest of the file in hex string.
*/
public String digest() throws IOException, InterruptedException {
return act(new FileCallable<String>() {
public String invoke(File f, VirtualChannel channel) throws IOException {
return Util.getDigestOf(new FileInputStream(f));
}
});
}
/**
* Rename this file/directory to the target filepath. This FilePath and the target must
* be on the some host
*/
public void renameTo(final FilePath target) throws IOException, InterruptedException {
if(this.channel != target.channel) {
throw new IOException("renameTo target must be on the same host");
}
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
f.renameTo(new File(target.remote));
return null;
}
});
}
/**
* Moves all the contents of this directory into the specified directory, then delete this directory itself.
*
* @since 1.308.
*/
public void moveAllChildrenTo(final FilePath target) throws IOException, InterruptedException {
if(this.channel != target.channel) {
throw new IOException("pullUpTo target must be on the same host");
}
act(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
File t = new File(target.getRemote());
for(File child : f.listFiles()) {
File target = new File(t, child.getName());
if(!child.renameTo(target))
throw new IOException("Failed to rename "+child+" to "+target);
}
f.delete();
return null;
}
});
}
/**
* Copies this file to the specified target.
*/
public void copyTo(FilePath target) throws IOException, InterruptedException {
try {
OutputStream out = target.write();
try {
copyTo(out);
} finally {
out.close();
}
} catch (IOException e) {
throw new IOException2("Failed to copy "+this+" to "+target,e);
}
}
/**
* Copies this file to the specified target, with file permissions and other meta attributes intact.
* @since 1.311
*/
public void copyToWithPermission(FilePath target) throws IOException, InterruptedException {
copyTo(target);
// copy file permission
target.chmod(mode());
target.setLastModifiedIfPossible(lastModified());
}
/**
* Sends the contents of this file into the given {@link OutputStream}.
*/
public void copyTo(OutputStream os) throws IOException, InterruptedException {
final OutputStream out = new RemoteOutputStream(os);
act(new FileCallable<Void>() {
private static final long serialVersionUID = 4088559042349254141L;
public Void invoke(File f, VirtualChannel channel) throws IOException {
FileInputStream fis = null;
try {
fis = new FileInputStream(f);
Util.copyStream(fis,out);
return null;
} finally {
IOUtils.closeQuietly(fis);
IOUtils.closeQuietly(out);
}
}
});
// make sure the write fully happens before we return.
syncIO();
}
private void syncIO() throws InterruptedException {
try {
if (channel!=null)
_syncIO();
} catch (AbstractMethodError e) {
// legacy slave.jar. Handle this gracefully
try {
LOGGER.log(Level.WARNING,"Looks like an old slave.jar. Please update "+ Which.jarFile(Channel.class)+" to the new version",e);
} catch (IOException _) {
// really ignore this time
}
}
}
/**
* A pointless function to work around what appears to be a HotSpot problem. See JENKINS-5756 and bug 6933067
* on BugParade for more details.
*/
private void _syncIO() throws InterruptedException {
channel.syncLocalIO();
}
/**
* Remoting interface used for {@link FilePath#copyRecursiveTo(String, FilePath)}.
*
* TODO: this might not be the most efficient way to do the copy.
*/
interface RemoteCopier {
/**
* @param fileName
* relative path name to the output file. Path separator must be '/'.
*/
void open(String fileName) throws IOException;
void write(byte[] buf, int len) throws IOException;
void close() throws IOException;
}
/**
* Copies the contents of this directory recursively into the specified target directory.
*
* @return
* the number of files copied.
* @since 1.312
*/
public int copyRecursiveTo(FilePath target) throws IOException, InterruptedException {
return copyRecursiveTo("**/*",target);
}
/**
* Copies the files that match the given file mask to the specified target node.
*
* @param fileMask
* Ant GLOB pattern.
* String like "foo/bar/*.xml" Multiple patterns can be separated
* by ',', and whitespace can surround ',' (so that you can write
* "abc, def" and "abc,def" to mean the same thing.
* @return
* the number of files copied.
*/
public int copyRecursiveTo(String fileMask, FilePath target) throws IOException, InterruptedException {
return copyRecursiveTo(fileMask,null,target);
}
/**
* Copies the files that match the given file mask to the specified target node.
*
* @param fileMask
* Ant GLOB pattern.
* String like "foo/bar/*.xml" Multiple patterns can be separated
* by ',', and whitespace can surround ',' (so that you can write
* "abc, def" and "abc,def" to mean the same thing.
* @param excludes
* Files to be excluded. Can be null.
* @return
* the number of files copied.
*/
public int copyRecursiveTo(final String fileMask, final String excludes, final FilePath target) throws IOException, InterruptedException {
if(this.channel==target.channel) {
// local to local copy.
return act(new FileCallable<Integer>() {
public Integer invoke(File base, VirtualChannel channel) throws IOException {
if(!base.exists()) return 0;
assert target.channel==null;
try {
class CopyImpl extends Copy {
private int copySize;
public CopyImpl() {
setProject(new org.apache.tools.ant.Project());
}
@Override
protected void doFileOperations() {
copySize = super.fileCopyMap.size();
super.doFileOperations();
}
public int getNumCopied() {
return copySize;
}
}
CopyImpl copyTask = new CopyImpl();
copyTask.setTodir(new File(target.remote));
copyTask.addFileset(Util.createFileSet(base,fileMask,excludes));
copyTask.setOverwrite(true);
copyTask.setIncludeEmptyDirs(false);
copyTask.execute();
return copyTask.getNumCopied();
} catch (BuildException e) {
throw new IOException2("Failed to copy "+base+"/"+fileMask+" to "+target,e);
}
}
});
} else
if(this.channel==null) {
// local -> remote copy
final Pipe pipe = Pipe.createLocalToRemote();
Future<Void> future = target.actAsync(new FileCallable<Void>() {
public Void invoke(File f, VirtualChannel channel) throws IOException {
try {
readFromTar(remote+'/'+fileMask, f,TarCompression.GZIP.extract(pipe.getIn()));
return null;
} finally {
pipe.getIn().close();
}
}
});
int r = writeToTar(new File(remote),fileMask,excludes,TarCompression.GZIP.compress(pipe.getOut()));
try {
future.get();
} catch (ExecutionException e) {
throw new IOException2(e);
}
return r;
} else {
// remote -> local copy
final Pipe pipe = Pipe.createRemoteToLocal();
Future<Integer> future = actAsync(new FileCallable<Integer>() {
public Integer invoke(File f, VirtualChannel channel) throws IOException {
try {
return writeToTar(f,fileMask,excludes,TarCompression.GZIP.compress(pipe.getOut()));
} finally {
pipe.getOut().close();
}
}
});
try {
readFromTar(remote+'/'+fileMask,new File(target.remote),TarCompression.GZIP.extract(pipe.getIn()));
} catch (IOException e) {// BuildException or IOException
try {
future.get(3,TimeUnit.SECONDS);
throw e; // the remote side completed successfully, so the error must be local
} catch (ExecutionException x) {
// report both errors
throw new IOException2(Functions.printThrowable(e),x);
} catch (TimeoutException _) {
// remote is hanging
throw e;
}
}
try {
return future.get();
} catch (ExecutionException e) {
throw new IOException2(e);
}
}
}
/**
* Writes files in 'this' directory to a tar stream.
*
* @param glob
* Ant file pattern mask, like "**/*.java".
*/
public int tar(OutputStream out, final String glob) throws IOException, InterruptedException {
return archive(ArchiverFactory.TAR, out, glob);
}
public int tar(OutputStream out, FileFilter filter) throws IOException, InterruptedException {
return archive(ArchiverFactory.TAR, out, filter);
}
/**
* Uses the given scanner on 'this' directory to list up files and then archive it to a tar stream.
*/
public int tar(OutputStream out, DirScanner scanner) throws IOException, InterruptedException {
return archive(ArchiverFactory.TAR, out, scanner);
}
/**
* Writes to a tar stream and stores obtained files to the base dir.
*
* @return
* number of files/directories that are written.
*/
private static Integer writeToTar(File baseDir, String fileMask, String excludes, OutputStream out) throws IOException {
Archiver tw = ArchiverFactory.TAR.create(out);
try {
new DirScanner.Glob(fileMask,excludes).scan(baseDir,tw);
} finally {
tw.close();
}
return tw.countEntries();
}
/**
* Reads from a tar stream and stores obtained files to the base dir.
*/
private static void readFromTar(String name, File baseDir, InputStream in) throws IOException {
TarInputStream t = new TarInputStream(in);
try {
TarEntry te;
while ((te = t.getNextEntry()) != null) {
File f = new File(baseDir,te.getName());
if(te.isDirectory()) {
f.mkdirs();
} else {
File parent = f.getParentFile();
if (parent != null) parent.mkdirs();
byte linkFlag = (Byte) LINKFLAG_FIELD.get(te);
if (linkFlag==TarEntry.LF_SYMLINK) {
new FilePath(f).symlinkTo(te.getLinkName(), TaskListener.NULL);
} else {
IOUtils.copy(t,f);
f.setLastModified(te.getModTime().getTime());
int mode = te.getMode()&0777;
if(mode!=0 && !Functions.isWindows()) // be defensive
_chmod(f,mode);
}
}
}
} catch(IOException e) {
throw new IOException2("Failed to extract "+name,e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt(); // process this later
throw new IOException2("Failed to extract "+name,e);
} catch (IllegalAccessException e) {
throw new IOException2("Failed to extract "+name,e);
} finally {
t.close();
}
}
/**
* Creates a {@link Launcher} for starting processes on the node
* that has this file.
* @since 1.89
*/
public Launcher createLauncher(TaskListener listener) throws IOException, InterruptedException {
if(channel==null)
return new LocalLauncher(listener);
else
return new RemoteLauncher(listener,channel,channel.call(new IsUnix()));
}
private static final class IsUnix implements Callable<Boolean,IOException> {
public Boolean call() throws IOException {
return File.pathSeparatorChar==':';
}
private static final long serialVersionUID = 1L;
}
/**
* Validates the ant file mask (like "foo/bar/*.txt, zot/*.jar")
* against this directory, and try to point out the problem.
*
* <p>
* This is useful in conjunction with {@link FormValidation}.
*
* @return
* null if no error was found. Otherwise returns a human readable error message.
* @since 1.90
* @see #validateFileMask(FilePath, String)
*/
public String validateAntFileMask(final String fileMasks) throws IOException, InterruptedException {
return act(new FileCallable<String>() {
public String invoke(File dir, VirtualChannel channel) throws IOException {
if(fileMasks.startsWith("~"))
return Messages.FilePath_TildaDoesntWork();
StringTokenizer tokens = new StringTokenizer(fileMasks,",");
while(tokens.hasMoreTokens()) {
final String fileMask = tokens.nextToken().trim();
if(hasMatch(dir,fileMask))
continue; // no error on this portion
// in 1.172 we introduced an incompatible change to stop using ' ' as the separator
// so see if we can match by using ' ' as the separator
if(fileMask.contains(" ")) {
boolean matched = true;
for (String token : Util.tokenize(fileMask))
matched &= hasMatch(dir,token);
if(matched)
return Messages.FilePath_validateAntFileMask_whitespaceSeprator();
}
// a common mistake is to assume the wrong base dir, and there are two variations
// to this: (1) the user gave us aa/bb/cc/dd where cc/dd was correct
// and (2) the user gave us cc/dd where aa/bb/cc/dd was correct.
{// check the (1) above first
String f=fileMask;
while(true) {
int idx = findSeparator(f);
if(idx==-1) break;
f=f.substring(idx+1);
if(hasMatch(dir,f))
return Messages.FilePath_validateAntFileMask_doesntMatchAndSuggest(fileMask,f);
}
}
{// check the (2) above next as this is more expensive.
// Try prepending "**/" to see if that results in a match
FileSet fs = Util.createFileSet(dir,"**/"+fileMask);
DirectoryScanner ds = fs.getDirectoryScanner(new Project());
if(ds.getIncludedFilesCount()!=0) {
// try shorter name first so that the suggestion results in least amount of changes
String[] names = ds.getIncludedFiles();
Arrays.sort(names,SHORTER_STRING_FIRST);
for( String f : names) {
// now we want to decompose f to the leading portion that matched "**"
// and the trailing portion that matched the file mask, so that
// we can suggest the user error.
//
// this is not a very efficient/clever way to do it, but it's relatively simple
String prefix="";
while(true) {
int idx = findSeparator(f);
if(idx==-1) break;
prefix+=f.substring(0,idx)+'/';
f=f.substring(idx+1);
if(hasMatch(dir,prefix+fileMask))
return Messages.FilePath_validateAntFileMask_doesntMatchAndSuggest(fileMask, prefix+fileMask);
}
}
}
}
{// finally, see if we can identify any sub portion that's valid. Otherwise bail out
String previous = null;
String pattern = fileMask;
while(true) {
if(hasMatch(dir,pattern)) {
// found a match
if(previous==null)
return Messages.FilePath_validateAntFileMask_portionMatchAndSuggest(fileMask,pattern);
else
return Messages.FilePath_validateAntFileMask_portionMatchButPreviousNotMatchAndSuggest(fileMask,pattern,previous);
}
int idx = findSeparator(pattern);
if(idx<0) {// no more path component left to go back
if(pattern.equals(fileMask))
return Messages.FilePath_validateAntFileMask_doesntMatchAnything(fileMask);
else
return Messages.FilePath_validateAntFileMask_doesntMatchAnythingAndSuggest(fileMask,pattern);
}
// cut off the trailing component and try again
previous = pattern;
pattern = pattern.substring(0,idx);
}
}
}
return null; // no error
}
private boolean hasMatch(File dir, String pattern) {
FileSet fs = Util.createFileSet(dir,pattern);
DirectoryScanner ds = fs.getDirectoryScanner(new Project());
return ds.getIncludedFilesCount()!=0 || ds.getIncludedDirsCount()!=0;
}
/**
* Finds the position of the first path separator.
*/
private int findSeparator(String pattern) {
int idx1 = pattern.indexOf('\\');
int idx2 = pattern.indexOf('/');
if(idx1==-1) return idx2;
if(idx2==-1) return idx1;
return Math.min(idx1,idx2);
}
});
}
/**
* Shortcut for {@link #validateFileMask(String)} in case the left-hand side can be null.
*/
public static FormValidation validateFileMask(FilePath pathOrNull, String value) throws IOException {
if(pathOrNull==null) return FormValidation.ok();
return pathOrNull.validateFileMask(value);
}
/**
* Short for {@code validateFileMask(value,true)}
*/
public FormValidation validateFileMask(String value) throws IOException {
return validateFileMask(value,true);
}
/**
* Checks the GLOB-style file mask. See {@link #validateAntFileMask(String)}.
* Requires configure permission on ancestor AbstractProject object in request,
* or admin permission if no such ancestor is found.
* @since 1.294
*/
public FormValidation validateFileMask(String value, boolean errorIfNotExist) throws IOException {
checkPermissionForValidate();
value = fixEmpty(value);
if(value==null)
return FormValidation.ok();
try {
if(!exists()) // no workspace. can't check
return FormValidation.ok();
String msg = validateAntFileMask(value);
if(errorIfNotExist) return FormValidation.error(msg);
else return FormValidation.warning(msg);
} catch (InterruptedException e) {
return FormValidation.ok();
}
}
/**
* Validates a relative file path from this {@link FilePath}.
* Requires configure permission on ancestor AbstractProject object in request,
* or admin permission if no such ancestor is found.
*
* @param value
* The relative path being validated.
* @param errorIfNotExist
* If true, report an error if the given relative path doesn't exist. Otherwise it's a warning.
* @param expectingFile
* If true, we expect the relative path to point to a file.
* Otherwise, the relative path is expected to be pointing to a directory.
*/
public FormValidation validateRelativePath(String value, boolean errorIfNotExist, boolean expectingFile) throws IOException {
checkPermissionForValidate();
value = fixEmpty(value);
// none entered yet, or something is seriously wrong
if(value==null) return FormValidation.ok();
// a common mistake is to use wildcard
if(value.contains("*")) return FormValidation.error(Messages.FilePath_validateRelativePath_wildcardNotAllowed());
try {
if(!exists()) // no base directory. can't check
return FormValidation.ok();
FilePath path = child(value);
if(path.exists()) {
if (expectingFile) {
if(!path.isDirectory())
return FormValidation.ok();
else
return FormValidation.error(Messages.FilePath_validateRelativePath_notFile(value));
} else {
if(path.isDirectory())
return FormValidation.ok();
else
return FormValidation.error(Messages.FilePath_validateRelativePath_notDirectory(value));
}
}
String msg = expectingFile ? Messages.FilePath_validateRelativePath_noSuchFile(value) :
Messages.FilePath_validateRelativePath_noSuchDirectory(value);
if(errorIfNotExist) return FormValidation.error(msg);
else return FormValidation.warning(msg);
} catch (InterruptedException e) {
return FormValidation.ok();
}
}
private static void checkPermissionForValidate() {
AccessControlled subject = Stapler.getCurrentRequest().findAncestorObject(AbstractProject.class);
if (subject == null)
Jenkins.getInstance().checkPermission(Jenkins.ADMINISTER);
else
subject.checkPermission(Item.CONFIGURE);
}
/**
* A convenience method over {@link #validateRelativePath(String, boolean, boolean)}.
*/
public FormValidation validateRelativeDirectory(String value, boolean errorIfNotExist) throws IOException {
return validateRelativePath(value,errorIfNotExist,false);
}
public FormValidation validateRelativeDirectory(String value) throws IOException {
return validateRelativeDirectory(value,true);
}
@Deprecated @Override
public String toString() {
// to make writing JSPs easily, return local
return remote;
}
public VirtualChannel getChannel() {
if(channel!=null) return channel;
else return Jenkins.MasterComputer.localChannel;
}
/**
* Returns true if this {@link FilePath} represents a remote file.
*/
public boolean isRemote() {
return channel!=null;
}
private void writeObject(ObjectOutputStream oos) throws IOException {
Channel target = Channel.current();
if(channel!=null && channel!=target)
throw new IllegalStateException("Can't send a remote FilePath to a different remote channel");
oos.defaultWriteObject();
oos.writeBoolean(channel==null);
}
private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
Channel channel = Channel.current();
assert channel!=null;
ois.defaultReadObject();
if(ois.readBoolean()) {
this.channel = channel;
} else {
this.channel = null;
}
}
private static final long serialVersionUID = 1L;
public static int SIDE_BUFFER_SIZE = 1024;
private static final Logger LOGGER = Logger.getLogger(FilePath.class.getName());
/**
* Adapts {@link FileCallable} to {@link Callable}.
*/
private class FileCallableWrapper<T> implements DelegatingCallable<T,IOException> {
private final FileCallable<T> callable;
private transient ClassLoader classLoader;
public FileCallableWrapper(FileCallable<T> callable) {
this.callable = callable;
this.classLoader = callable.getClass().getClassLoader();
}
private FileCallableWrapper(FileCallable<T> callable, ClassLoader classLoader) {
this.callable = callable;
this.classLoader = classLoader;
}
public T call() throws IOException {
try {
return callable.invoke(new File(remote), Channel.current());
} catch (InterruptedException e) {
throw new TunneledInterruptedException(e);
}
}
public ClassLoader getClassLoader() {
return classLoader;
}
private static final long serialVersionUID = 1L;
}
/**
* Used to tunnel {@link InterruptedException} over a Java signature that only allows {@link IOException}
*/
private static class TunneledInterruptedException extends IOException2 {
private TunneledInterruptedException(InterruptedException cause) {
super(cause);
}
private static final long serialVersionUID = 1L;
}
private static final Comparator<String> SHORTER_STRING_FIRST = new Comparator<String>() {
public int compare(String o1, String o2) {
return o1.length()-o2.length();
}
};
private static final Field LINKFLAG_FIELD = getTarEntryLinkFlagField();
private static Field getTarEntryLinkFlagField() {
try {
Field f = TarEntry.class.getDeclaredField("linkFlag");
f.setAccessible(true);
return f;
} catch (SecurityException e) {
throw new AssertionError(e);
} catch (NoSuchFieldException e) {
throw new AssertionError(e);
}
}
}