/**
* Returns a collection of all active AsteriskChannels.
*
* @return a collection of all active AsteriskChannels.
*/
Collection<AsteriskChannel> getChannels() {
Collection<AsteriskChannel> copy;
synchronized (channels) {
copy = new ArrayList<AsteriskChannel>(channels.size() + 2);
for (AsteriskChannel channel : channels) {
if (channel.getState() != ChannelState.HUNGUP) {
copy.add(channel);
}
}
}
return copy;
}
/** Removes channels that have been hung more than {@link #REMOVAL_THRESHOLD} milliseconds. */
private void removeOldChannels() {
Iterator<AsteriskChannelImpl> i;
synchronized (channels) {
i = channels.iterator();
while (i.hasNext()) {
final AsteriskChannel channel = i.next();
final Date dateOfRemoval = channel.getDateOfRemoval();
if (channel.getState() == ChannelState.HUNGUP && dateOfRemoval != null) {
final long diff = DateUtil.getDate().getTime() - dateOfRemoval.getTime();
if (diff >= REMOVAL_THRESHOLD) {
i.remove();
}
}
}
}
}