/** Finds an inactive channel with the given id and returns it, or returns null. */
@Nullable
StoredClientChannel getUsableChannelForServerID(Sha256Hash id) {
lock.lock();
try {
Set<StoredClientChannel> setChannels = mapChannels.get(id);
for (StoredClientChannel channel : setChannels) {
synchronized (channel) {
// Check if the channel is usable (has money, inactive) and if so, activate it.
log.info(
"Considering channel {} contract {}", channel.hashCode(), channel.contract.getHash());
if (channel.close != null || channel.valueToMe.equals(Coin.ZERO)) {
log.info(" ... but is closed or empty");
continue;
}
if (!channel.active) {
log.info(" ... activating");
channel.active = true;
return channel;
}
log.info(" ... but is already active");
}
}
} finally {
lock.unlock();
}
return null;
}
/**
* Notifies the set of stored states that a channel has been updated. Use to notify the wallet of
* an update to this wallet extension.
*/
void updatedChannel(final StoredClientChannel channel) {
log.info("Stored client channel {} was updated", channel.hashCode());
containingWallet.addOrUpdateExtension(this);
}