[Java] Update auto-generated Java bindings

Author: TheBlueMatt

src/main/java/org/ldk/enums/ChannelMonitorUpdateErr.java

@@ -0,0 +1,88 @@
+package org.ldk.enums;
+
+/**
+ * An enum representing the status of a channel monitor update persistence.
+ */
+public enum ChannelMonitorUpdateStatus {
+	/**
+	 * The update has been durably persisted and all copies of the relevant [`ChannelMonitor`]
+	 * have been updated.
+	 * 
+	 * This includes performing any `fsync()` calls required to ensure the update is guaranteed to
+	 * be available on restart even if the application crashes.
+	 */
+	LDKChannelMonitorUpdateStatus_Completed,
+	/**
+	 * Used to indicate a temporary failure (eg connection to a watchtower or remote backup of
+	 * our state failed, but is expected to succeed at some point in the future).
+	 * 
+	 * Such a failure will \"freeze\" a channel, preventing us from revoking old states or
+	 * submitting new commitment transactions to the counterparty. Once the update(s) which failed
+	 * have been successfully applied, a [`MonitorEvent::Completed`] can be used to restore the
+	 * channel to an operational state.
+	 * 
+	 * Note that a given [`ChannelManager`] will *never* re-generate a [`ChannelMonitorUpdate`].
+	 * If you return this error you must ensure that it is written to disk safely before writing
+	 * the latest [`ChannelManager`] state, or you should return [`PermanentFailure`] instead.
+	 * 
+	 * Even when a channel has been \"frozen\", updates to the [`ChannelMonitor`] can continue to
+	 * occur (e.g. if an inbound HTLC which we forwarded was claimed upstream, resulting in us
+	 * attempting to claim it on this channel) and those updates must still be persisted.
+	 * 
+	 * No updates to the channel will be made which could invalidate other [`ChannelMonitor`]s
+	 * until a [`MonitorEvent::Completed`] is provided, even if you return no error on a later
+	 * monitor update for the same channel.
+	 * 
+	 * For deployments where a copy of ChannelMonitors and other local state are backed up in a
+	 * remote location (with local copies persisted immediately), it is anticipated that all
+	 * updates will return [`InProgress`] until the remote copies could be updated.
+	 * 
+	 * [`PermanentFailure`]: ChannelMonitorUpdateStatus::PermanentFailure
+	 * [`InProgress`]: ChannelMonitorUpdateStatus::InProgress
+	 * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+	 */
+	LDKChannelMonitorUpdateStatus_InProgress,
+	/**
+	 * Used to indicate no further channel monitor updates will be allowed (likely a disk failure
+	 * or a remote copy of this [`ChannelMonitor`] is no longer reachable and thus not updatable).
+	 * 
+	 * When this is returned, [`ChannelManager`] will force-close the channel but *not* broadcast
+	 * our current commitment transaction. This avoids a dangerous case where a local disk failure
+	 * (e.g. the Linux-default remounting of the disk as read-only) causes [`PermanentFailure`]s
+	 * for all monitor updates. If we were to broadcast our latest commitment transaction and then
+	 * restart, we could end up reading a previous [`ChannelMonitor`] and [`ChannelManager`],
+	 * revoking our now-broadcasted state before seeing it confirm and losing all our funds.
+	 * 
+	 * Note that this is somewhat of a tradeoff - if the disk is really gone and we may have lost
+	 * the data permanently, we really should broadcast immediately. If the data can be recovered
+	 * with manual intervention, we'd rather close the channel, rejecting future updates to it,
+	 * and broadcast the latest state only if we have HTLCs to claim which are timing out (which
+	 * we do as long as blocks are connected).
+	 * 
+	 * In order to broadcast the latest local commitment transaction, you'll need to call
+	 * [`ChannelMonitor::get_latest_holder_commitment_txn`] and broadcast the resulting
+	 * transactions once you've safely ensured no further channel updates can be generated by your
+	 * [`ChannelManager`].
+	 * 
+	 * Note that at least one final [`ChannelMonitorUpdate`] may still be provided, which must
+	 * still be processed by a running [`ChannelMonitor`]. This final update will mark the
+	 * [`ChannelMonitor`] as finalized, ensuring no further updates (e.g. revocation of the latest
+	 * commitment transaction) are allowed.
+	 * 
+	 * Note that even if you return a [`PermanentFailure`] due to unavailability of secondary
+	 * [`ChannelMonitor`] copies, you should still make an attempt to store the update where
+	 * possible to ensure you can claim HTLC outputs on the latest commitment transaction
+	 * broadcasted later.
+	 * 
+	 * In case of distributed watchtowers deployment, the new version must be written to disk, as
+	 * state may have been stored but rejected due to a block forcing a commitment broadcast. This
+	 * storage is used to claim outputs of rejected state confirmed onchain by another watchtower,
+	 * lagging behind on block processing.
+	 * 
+	 * [`PermanentFailure`]: ChannelMonitorUpdateStatus::PermanentFailure
+	 * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+	 */
+	LDKChannelMonitorUpdateStatus_PermanentFailure,
+	; static native void init();
+	static { init(); }
+}