public static String readSymlinkTarget(File file) {
try {
return Files.readSymbolicLink(Paths.get(file.getAbsolutePath())).toString();
} catch (IOException e) {
return null;
}
}
@Test
public void testCreateRelativeSymlinkToFilesInRoot() throws IOException {
ProjectFilesystem projectFilesystem = new ProjectFilesystem(tmp.getRoot());
tmp.newFile("biz.txt");
Path pathToDesiredLinkUnderProjectRoot = Paths.get("gamma.txt");
Path pathToExistingFileUnderProjectRoot = Paths.get("biz.txt");
Path relativePath =
MorePaths.createRelativeSymlink(
pathToDesiredLinkUnderProjectRoot,
pathToExistingFileUnderProjectRoot,
projectFilesystem);
assertEquals("biz.txt", relativePath.toString());
Path absolutePathToDesiredLinkUnderProjectRoot =
projectFilesystem.resolve(pathToDesiredLinkUnderProjectRoot);
assertTrue(Files.isSymbolicLink(absolutePathToDesiredLinkUnderProjectRoot));
Path targetOfSymbolicLink = Files.readSymbolicLink(absolutePathToDesiredLinkUnderProjectRoot);
assertEquals(relativePath, targetOfSymbolicLink);
Path absolutePathToExistingFileUnderProjectRoot =
projectFilesystem.resolve(pathToExistingFileUnderProjectRoot);
Files.write(absolutePathToExistingFileUnderProjectRoot, "Hello, World!".getBytes());
String dataReadFromSymlink =
new String(Files.readAllBytes(absolutePathToDesiredLinkUnderProjectRoot));
assertEquals("Hello, World!", dataReadFromSymlink);
}
/**
* Read local data revision number. Db data directory is a symbol link to a data revision
* directory as the following /data/db/1 -> /data/db/1459567039514.0 Here data version number is
* 1459567039514 and 0 is incremental snapshot number. It is always 0 for db revisions
*
* @return
* @throws IOException
*/
private String getLocalDataRevision() {
Path dbDataDir = Paths.get(dbDir, "1");
try {
if (Files.isSymbolicLink(dbDataDir)) {
Path symDir = Files.readSymbolicLink(dbDataDir);
String versionName = symDir.toFile().getName();
int i = versionName.lastIndexOf(".");
return versionName.substring(0, i);
}
} catch (Exception ex) {
_log.error("Retrieve local data revision error", ex);
}
return null;
}
public FileAttrs getAttrs() throws IOException {
FileAttrs result;
BasicFileAttributes attr;
DosFileAttributes dosAttr;
PosixFileAttributes posixAttr;
result = new FileAttrs();
attr = Files.readAttributes(this.path.toPath(), BasicFileAttributes.class);
result.setCtime(attr.creationTime().toMillis());
result.setMtime(attr.lastModifiedTime().toMillis());
// result.append("symlink", attr.isSymbolicLink()); //Redundant
result.setSize(attr.size());
if (System.getProperty("os.name").startsWith("Windows")) {
dosAttr = Files.readAttributes(this.path.toPath(), DosFileAttributes.class);
result.setDosArchive(dosAttr.isArchive());
result.setDosHidden(dosAttr.isHidden());
result.setDosReadonly(dosAttr.isReadOnly());
result.setDosSystem(dosAttr.isSystem());
} else {
posixAttr = Files.readAttributes(this.path.toPath(), PosixFileAttributes.class);
result.setPosixSymlink(this.isSymlink());
if (result.getPosixSymlink()) {
result.setLinkTo(Files.readSymbolicLink(this.path.toPath()).toString());
}
result.setPosixOwner(posixAttr.owner().getName());
result.setPosixGroup(posixAttr.group().getName());
result.setPosixPermission(PosixFilePermissions.toString(posixAttr.permissions()));
}
return result;
}
private static void assertIsSymbolicLink(Path link, Path target) throws IOException {
assertTrue(Files.isSymbolicLink(link));
assertEquals(target, Files.readSymbolicLink(link));
}
private TarArchiveEntry buildTarArchiveEntry(ProjectArchive project, Path absPath, String name)
throws IOException {
TarArchiveEntry e;
if (Files.isSymbolicLink(absPath)) {
e = new TarArchiveEntry(name, TarConstants.LF_SYMLINK);
Path rawDest = Files.readSymbolicLink(absPath);
Path normalizedAbsDest = absPath.getParent().resolve(rawDest).normalize();
try {
project.pathToResourceName(normalizedAbsDest);
} catch (IllegalArgumentException ex) {
throw new IllegalArgumentException("Invalid symbolic link: " + ex.getMessage());
}
// absolute path will be invalid on a server. convert it to a relative path
Path normalizedRelativeDest = absPath.getParent().relativize(normalizedAbsDest);
String linkName = normalizedRelativeDest.toString();
// TarArchiveEntry(File) does this normalization but setLinkName doesn't. So do it here:
linkName = linkName.replace(File.separatorChar, '/');
e.setLinkName(linkName);
} else {
e = new TarArchiveEntry(absPath.toFile(), name);
try {
int mode = 0;
for (PosixFilePermission perm : Files.getPosixFilePermissions(absPath)) {
switch (perm) {
case OWNER_READ:
mode |= 0400;
break;
case OWNER_WRITE:
mode |= 0200;
break;
case OWNER_EXECUTE:
mode |= 0100;
break;
case GROUP_READ:
mode |= 0040;
break;
case GROUP_WRITE:
mode |= 0020;
break;
case GROUP_EXECUTE:
mode |= 0010;
break;
case OTHERS_READ:
mode |= 0004;
break;
case OTHERS_WRITE:
mode |= 0002;
break;
case OTHERS_EXECUTE:
mode |= 0001;
break;
default:
// ignore
}
}
e.setMode(mode);
} catch (UnsupportedOperationException ex) {
// ignore custom mode
}
}
return e;
}
/** Returns the target of the specified symbolic link. */
public Path readSymLink(Path path) throws IOException {
return Files.readSymbolicLink(getPathForRelativePath(path));
}
