/** {@inheritDoc} */
@Override
public Map<?, ?> waitForAttributes(Collection<?> keys, long timeout) throws InterruptedException {
A.notNull(keys, "keys");
if (keys.isEmpty()) return Collections.emptyMap();
if (timeout == 0) timeout = Long.MAX_VALUE;
long now = System.currentTimeMillis();
// Prevent overflow.
long end = now + timeout < 0 ? Long.MAX_VALUE : now + timeout;
// Don't wait longer than session timeout.
if (end > endTime) end = endTime;
synchronized (mux) {
while (!closed && !attrs.keySet().containsAll(keys) && now < end) {
mux.wait(end - now);
now = System.currentTimeMillis();
}
if (closed) throw new InterruptedException("Session was closed: " + this);
Map<Object, Object> retVal = new HashMap<Object, Object>(keys.size());
for (Object key : keys) retVal.put(key, attrs.get(key));
return retVal;
}
}
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
public <K, V> V waitForAttribute(K key, long timeout) throws InterruptedException {
A.notNull(key, "key");
if (timeout == 0) timeout = Long.MAX_VALUE;
long now = System.currentTimeMillis();
// Prevent overflow.
long end = now + timeout < 0 ? Long.MAX_VALUE : now + timeout;
// Don't wait longer than session timeout.
if (end > endTime) end = endTime;
synchronized (mux) {
while (!closed && !attrs.containsKey(key) && now < end) {
mux.wait(end - now);
now = System.currentTimeMillis();
}
if (closed) throw new InterruptedException("Session was closed: " + this);
return (V) attrs.get(key);
}
}
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
public <K, V> V getAttribute(K key) {
A.notNull(key, "key");
synchronized (attrs) {
return (V) attrs.get(key);
}
}
/**
* @param key Key.
* @param val Value.
* @return {@code true} if key/value pair was set.
*/
private boolean isAttributeSet(Object key, Object val) {
if (attrs.containsKey(key)) {
Object stored = attrs.get(key);
if (val == null && stored == null) return true;
if (val != null && stored != null) return val.equals(stored);
}
return false;
}