/** An exceptionally crude implementation of Mailbox relying on POSIXy filesystem semantics */
public class FileBasedMailbox extends Mailbox.Default {
+ public static final long MAGIC_DATE = 0;
+
public String toString() { return "[FileBasedMailbox " + path.getAbsolutePath() + "]"; }
private static final char slash = File.separatorChar;
private static final WeakHashMap<String,FileBasedMailbox> instances = new WeakHashMap<String,FileBasedMailbox>();
public Cache(File dir) { this.dir = dir; }
- public void init(Prevayler prevayler) throws IOException {
+ public void init(final Prevayler prevayler) throws IOException {
dir.mkdirs();
Log.info(this, "initializing maildir " + dir.getParent());
boolean invalid = false;
}
for(Transaction t : kill) prevayler.execute(t);
for(String file : new File(dir.getParent()).list())
- if (file.charAt(0)!='.' && !(new File(dir.getParent() + slash + file).isDirectory()))
+ if (file.charAt(0)!='.' && !(new File(dir.getParent() + slash + file).isDirectory())) {
if (get(file) == null) new Entry(this, prevayler, file);
+ else if ((new File(dir.getParent() + slash + file).lastModified() == MAGIC_DATE) != get(file).seen())
+ prevayler.execute(new Seen(get(file).uid(), !get(file).seen()));
+ }
Log.info(this, " done initializing maildir " + dir.getParent());
- prevayler.takeSnapshot();
+ new Thread() { public void run() {
+ try { prevayler.takeSnapshot(); } catch (Exception e) { Log.error(this, e); }
+ } }.start();
}
- public static class Drop implements Transaction {
- int uid;
- public Drop(int uid) { this.uid = uid; }
- public void executeOn(Object o, Date now) {
- Cache c = (Cache)o;
- Entry e = c.get(uid);
- c.byname.remove(e.name);
- c.linear.remove(e);
- c.byuid.remove(uid);
- }
- }
-
+
public synchronized int size() { return linear.size(); }
public synchronized int uidNext(boolean increment) { return increment ? uidNext++ : uidNext; }
public synchronized Entry get(int uid) { return byuid.get(uid); }
}
public static class Entry implements Serializable {
- public final MIME.Headers headers;
+ private final byte[] header;
public final String name;
private int uid;
private boolean seen;
+ public MIME.Headers headers() { return new MIME.Headers(new Stream(new ByteArrayInputStream(header)), true); }
public Entry(Cache cache, Prevayler prevayler, String name) throws IOException {
- seen = name.endsWith("s");
- this.name = seen ? name.substring(0, name.length() - 1) : name;
- headers = new MIME.Headers(new Stream(new FileInputStream(cache.dir.getParent()+slash+name)), true);
+ File f = new File(cache.dir.getParent()+slash+name);
+ final boolean seen = f.lastModified() == MAGIC_DATE;
+ this.name = name;
+ header = new MIME.Headers(new Stream(new FileInputStream(f)), true).toString().getBytes();
prevayler.execute(new Transaction() {
public void executeOn(Object o, Date now) {
Cache cache = (Cache)o;
synchronized(cache) {
+ Entry.this.seen = seen;
Entry.this.uid = cache.uidNext(true);
cache.linear.add(Entry.this);
cache.byuid.put(Entry.this.uid, Entry.this);
public boolean seen() { return seen; }
public void seen(Cache cache, boolean seen) {
String base = cache.dir.getParent() + slash + name;
- File target = new File(base + (seen?"s":""));
- this.seen = seen;
- if (target.exists()) return;
- new File(base + (seen?"":"s")).renameTo(target);
+ File target = new File(base);
+ if (!target.exists()) target = new File(base + "s");
+ target.setLastModified(seen ? MAGIC_DATE : System.currentTimeMillis());
}
public void delete(Cache cache) {
String base = cache.dir.getParent() + slash + name;
Log.info(path, message.summary());
try {
String name; String fullname; File target; File f;
- do {
- name = cache.uidNext(true) + "." + ((flags & Mailbox.Flag.SEEN) == Mailbox.Flag.SEEN ? "s" : "");
+ while(true) {
+ name = cache.uidNext(true) + ".";
fullname = path.getAbsolutePath() + slash + name;
target = new File(fullname);
f = new File(target.getCanonicalPath() + "-");
+ if (!f.exists() && !target.exists()) break;
Log.error(this, "aieeee!!!! target of add() already exists: " + target.getAbsolutePath());
- } while (f.exists() || target.exists());
+ }
FileOutputStream fo = new FileOutputStream(f);
Stream stream = new Stream(fo);
if (message.envelope != null) {
message.dump(stream);
fo.close();
f.renameTo(new File(fullname));
+ if ((flags & Mailbox.Flag.SEEN) == Mailbox.Flag.SEEN) f.setLastModified(MAGIC_DATE);
new Cache.Entry(cache, prevayler, name);
} catch (IOException e) { throw new MailException.IOException(e); }
}
private class Iterator extends Mailbox.Default.Iterator {
int cur = -1;
private Cache.Entry entry() { return cache.getLinear(cur); }
- public MIME.Headers head() { return done() ? null : entry().headers; }
+ public MIME.Headers head() { return done() ? null : entry().headers(); }
public boolean done() { return cur >= cache.size(); }
public boolean next() { cur++; return !done(); }
public boolean seen() { return done() ? false : entry().seen(); }
public int num() { return cur+1; } // EUDORA insists that message numbers start at 1, not 0
public int uid() { return done() ? -1 : entry().uid(); }
public Message cur() { return done() ? null : entry().message(cache); }
- public void seen(boolean seen) { prevayler.execute(new Seen(uid(), seen)); }
- public void delete() { prevayler.execute(new Delete(uid())); }
+ public void seen(boolean seen) {
+ entry().seen((Cache)prevayler.prevalentSystem(), seen);
+ prevayler.execute(new Seen(uid(), seen));
+ }
+ public void delete() {
+ entry().delete((Cache)prevayler.prevalentSystem());
+ prevayler.execute(new Drop(entry().uid()));
+ }
}
- private static class Delete implements Transaction {
- private int uid;
- public Delete(int uid) { this.uid = uid; }
- public void executeOn(Object c, Date d) { ((Cache)c).get(uid).delete((Cache)c); }
- }
private static class Seen implements Transaction {
private int uid;
private boolean seen;
public Seen(int uid, boolean seen) { this.uid = uid; this.seen = seen; }
- public void executeOn(Object c, Date d) { ((Cache)c).get(uid).seen((Cache)c, seen); }
+ public void executeOn(Object c, Date d) { ((Cache)c).get(uid).seen = seen; }
+ }
+ public static class Drop implements Transaction {
+ int uid;
+ public Drop(int uid) { this.uid = uid; }
+ public void executeOn(Object o, Date now) {
+ Cache c = (Cache)o;
+ Cache.Entry e = c.get(uid);
+ c.byname.remove(e.name);
+ c.linear.remove(e);
+ c.byuid.remove(uid);
+ }
}
}
projects / org.ibex.mail.git / blobdiff