/**
* Given a file object, this creates a PLUSFile representation filled with appropriate metadata,
* file owner, and so on.
*
* @param file
* @return
*/
public static PLUSFile extractMetadata(File file, AbstractProvenanceClient client) {
if (!file.exists() || !file.canRead()) return null;
PLUSFile f = new PLUSFile(file);
// Try to figure out who owns this file, if it exists.
if (f.getOwner() == null) {
// This is a java-7 ism that permits us to access the file owner.
try {
Path path = Paths.get(file.getAbsolutePath());
UserPrincipal owner = Files.getOwner(path);
String username = owner.getName();
try {
PLUSActor a = client.actorExistsByName(username);
if (a == null) a = new PLUSActor(username);
f.setOwner(a);
} catch (PLUSException e) {
log.warning(e.getMessage());
}
} catch (IOException exc) {
log.warning(exc.getMessage());
}
}
try {
f.getMetadata().put("isLink", "" + file.getCanonicalFile().equals(file.getAbsoluteFile()));
} catch (Exception exc) {;
}
try {
f.getMetadata().put("exists", "" + file.exists());
} catch (Exception exc) {;
}
try {
f.getMetadata().put("path", file.getAbsolutePath());
} catch (Exception exc) {;
}
try {
f.getMetadata().put("canonical", file.getCanonicalPath());
} catch (Exception exc) {;
}
try {
f.getMetadata().put("directory", "" + file.isDirectory());
} catch (Exception exc) {;
}
try {
f.getMetadata().put("lastmodified", "" + file.lastModified());
} catch (Exception exc) {;
}
try {
f.getMetadata().put("size", "" + file.length());
} catch (Exception exc) {;
}
return f;
} // End extractMetadata
/**
* Takes a list of files as arguments; hashes each file, and creates a corresponding PLUSFile
* provenance object in the local repository. Creates the corresponding hash metadata entry and an
* NPE to the hash value.
*
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String line = null;
LocalProvenanceClient client = new LocalProvenanceClient();
while ((line = br.readLine()) != null) {
String filename = line.trim();
File f = new File(filename);
if (!f.exists()) {
System.err.println(filename + " does not exist.");
continue;
} else if (f.isDirectory()) continue;
PLUSFile fl = new PLUSFile(f);
String hash = fl.hash();
NonProvenanceEdge npe =
new NonProvenanceEdge(fl, hash, NonProvenanceEdge.NPE_TYPE_CONTENT_HASH);
ProvenanceCollection c = ProvenanceCollection.collect(fl);
c.addNonProvenanceEdge(npe);
client.report(c);
try {
URI u = new URI("http", "//" + filename, null);
npe = new NonProvenanceEdge(fl.getId(), u.toString(), NonProvenanceEdge.NPE_TYPE_URI);
// log.info("Wrote URL " + u);
client.report(ProvenanceCollection.collect(npe));
} catch (Exception exc) {
System.err.println("Illegal URI: " + filename + " - " + exc.getMessage());
}
System.out.println("Wrote " + fl + " => " + fl.getId());
} // End while
} // End main
