+use lightning::chain::chainmonitor::MonitorUpdateId as nativeMonitorUpdateIdImport;
+pub(crate) type nativeMonitorUpdateId = nativeMonitorUpdateIdImport;
+
+/// An opaque identifier describing a specific [`Persist`] method call.
+#[must_use]
+#[repr(C)]
+pub struct MonitorUpdateId {
+ /// A pointer to the opaque Rust object.
+
+ /// Nearly everywhere, inner must be non-null, however in places where
+ /// the Rust equivalent takes an Option, it may be set to null to indicate None.
+ pub inner: *mut nativeMonitorUpdateId,
+ /// Indicates that this is the only struct which contains the same pointer.
+
+ /// Rust functions which take ownership of an object provided via an argument require
+ /// this to be true and invalidate the object pointed to by inner.
+ pub is_owned: bool,
+}
+
+impl Drop for MonitorUpdateId {
+ fn drop(&mut self) {
+ if self.is_owned && !<*mut nativeMonitorUpdateId>::is_null(self.inner) {
+ let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
+ }
+ }
+}
+/// Frees any resources used by the MonitorUpdateId, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn MonitorUpdateId_free(this_obj: MonitorUpdateId) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn MonitorUpdateId_free_void(this_ptr: *mut c_void) {
+ let _ = unsafe { Box::from_raw(this_ptr as *mut nativeMonitorUpdateId) };
+}
+#[allow(unused)]
+impl MonitorUpdateId {
+ pub(crate) fn get_native_ref(&self) -> &'static nativeMonitorUpdateId {
+ unsafe { &*ObjOps::untweak_ptr(self.inner) }
+ }
+ pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeMonitorUpdateId {
+ unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
+ }
+ /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
+ pub(crate) fn take_inner(mut self) -> *mut nativeMonitorUpdateId {
+ assert!(self.is_owned);
+ let ret = ObjOps::untweak_ptr(self.inner);
+ self.inner = core::ptr::null_mut();
+ ret
+ }
+}
+impl Clone for MonitorUpdateId {
+ fn clone(&self) -> Self {
+ Self {
+ inner: if <*mut nativeMonitorUpdateId>::is_null(self.inner) { core::ptr::null_mut() } else {
+ ObjOps::heap_alloc(unsafe { &*ObjOps::untweak_ptr(self.inner) }.clone()) },
+ is_owned: true,
+ }
+ }
+}
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn MonitorUpdateId_clone_void(this_ptr: *const c_void) -> *mut c_void {
+ Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeMonitorUpdateId)).clone() })) as *mut c_void
+}
+#[no_mangle]
+/// Creates a copy of the MonitorUpdateId
+pub extern "C" fn MonitorUpdateId_clone(orig: &MonitorUpdateId) -> MonitorUpdateId {
+ orig.clone()
+}
+/// Checks if two MonitorUpdateIds contain equal inner contents.
+#[no_mangle]
+pub extern "C" fn MonitorUpdateId_hash(o: &MonitorUpdateId) -> u64 {
+ if o.inner.is_null() { return 0; }
+ // Note that we'd love to use alloc::collections::hash_map::DefaultHasher but it's not in core
+ #[allow(deprecated)]
+ let mut hasher = core::hash::SipHasher::new();
+ core::hash::Hash::hash(o.get_native_ref(), &mut hasher);
+ core::hash::Hasher::finish(&hasher)
+}
+/// Checks if two MonitorUpdateIds contain equal inner contents.
+/// This ignores pointers and is_owned flags and looks at the values in fields.
+/// Two objects with NULL inner values will be considered "equal" here.
+#[no_mangle]
+pub extern "C" fn MonitorUpdateId_eq(a: &MonitorUpdateId, b: &MonitorUpdateId) -> bool {
+ if a.inner == b.inner { return true; }
+ if a.inner.is_null() || b.inner.is_null() { return false; }
+ if a.get_native_ref() == b.get_native_ref() { true } else { false }
+}
+/// `Persist` defines behavior for persisting channel monitors: this could mean
+/// writing once to disk, and/or uploading to one or more backup services.
+///
+/// Each method can return three possible values:
+/// * If persistence (including any relevant `fsync()` calls) happens immediately, the
+/// implementation should return [`ChannelMonitorUpdateStatus::Completed`], indicating normal
+/// channel operation should continue.
+/// * If persistence happens asynchronously, implementations should first ensure the
+/// [`ChannelMonitor`] or [`ChannelMonitorUpdate`] are written durably to disk, and then return
+/// [`ChannelMonitorUpdateStatus::InProgress`] while the update continues in the background.
+/// Once the update completes, [`ChainMonitor::channel_monitor_updated`] should be called with
+/// the corresponding [`MonitorUpdateId`].
+///
+/// Note that unlike the direct [`chain::Watch`] interface,
+/// [`ChainMonitor::channel_monitor_updated`] must be called once for *each* update which occurs.
+///
+/// * If persistence fails for some reason, implementations should return
+/// [`ChannelMonitorUpdateStatus::PermanentFailure`], in which case the channel will likely be
+/// closed without broadcasting the latest state. See
+/// [`ChannelMonitorUpdateStatus::PermanentFailure`] for more details.
+#[repr(C)]
+pub struct Persist {
+ /// An opaque pointer which is passed to your function implementations as an argument.
+ /// This has no meaning in the LDK, and can be NULL or any other value.
+ pub this_arg: *mut c_void,
+ /// Persist a new channel's data in response to a [`chain::Watch::watch_channel`] call. This is
+ /// called by [`ChannelManager`] for new channels, or may be called directly, e.g. on startup.
+ ///
+ /// The data can be stored any way you want, but the identifier provided by LDK is the
+ /// channel's outpoint (and it is up to you to maintain a correct mapping between the outpoint
+ /// and the stored channel data). Note that you **must** persist every new monitor to disk.
+ ///
+ /// The `update_id` is used to identify this call to [`ChainMonitor::channel_monitor_updated`],
+ /// if you return [`ChannelMonitorUpdateStatus::InProgress`].
+ ///
+ /// See [`Writeable::write`] on [`ChannelMonitor`] for writing out a `ChannelMonitor`
+ /// and [`ChannelMonitorUpdateStatus`] for requirements when returning errors.
+ ///
+ /// [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+ /// [`Writeable::write`]: crate::util::ser::Writeable::write
+ #[must_use]
+ pub persist_new_channel: extern "C" fn (this_arg: *const c_void, channel_id: crate::lightning::chain::transaction::OutPoint, data: &crate::lightning::chain::channelmonitor::ChannelMonitor, update_id: crate::lightning::chain::chainmonitor::MonitorUpdateId) -> crate::lightning::chain::ChannelMonitorUpdateStatus,
+ /// Update one channel's data. The provided [`ChannelMonitor`] has already applied the given
+ /// update.
+ ///
+ /// Note that on every update, you **must** persist either the [`ChannelMonitorUpdate`] or the
+ /// updated monitor itself to disk/backups. See the [`Persist`] trait documentation for more
+ /// details.
+ ///
+ /// During blockchain synchronization operations, this may be called with no
+ /// [`ChannelMonitorUpdate`], in which case the full [`ChannelMonitor`] needs to be persisted.
+ /// Note that after the full [`ChannelMonitor`] is persisted any previous
+ /// [`ChannelMonitorUpdate`]s which were persisted should be discarded - they can no longer be
+ /// applied to the persisted [`ChannelMonitor`] as they were already applied.
+ ///
+ /// If an implementer chooses to persist the updates only, they need to make
+ /// sure that all the updates are applied to the `ChannelMonitors` *before*
+ /// the set of channel monitors is given to the `ChannelManager`
+ /// deserialization routine. See [`ChannelMonitor::update_monitor`] for
+ /// applying a monitor update to a monitor. If full `ChannelMonitors` are
+ /// persisted, then there is no need to persist individual updates.
+ ///
+ /// Note that there could be a performance tradeoff between persisting complete
+ /// channel monitors on every update vs. persisting only updates and applying
+ /// them in batches. The size of each monitor grows `O(number of state updates)`
+ /// whereas updates are small and `O(1)`.
+ ///
+ /// The `update_id` is used to identify this call to [`ChainMonitor::channel_monitor_updated`],
+ /// if you return [`ChannelMonitorUpdateStatus::InProgress`].
+ ///
+ /// See [`Writeable::write`] on [`ChannelMonitor`] for writing out a `ChannelMonitor`,
+ /// [`Writeable::write`] on [`ChannelMonitorUpdate`] for writing out an update, and
+ /// [`ChannelMonitorUpdateStatus`] for requirements when returning errors.
+ ///
+ /// [`Writeable::write`]: crate::util::ser::Writeable::write
+ ///
+ /// Note that update (or a relevant inner pointer) may be NULL or all-0s to represent None
+ #[must_use]
+ pub update_persisted_channel: extern "C" fn (this_arg: *const c_void, channel_id: crate::lightning::chain::transaction::OutPoint, update: crate::lightning::chain::channelmonitor::ChannelMonitorUpdate, data: &crate::lightning::chain::channelmonitor::ChannelMonitor, update_id: crate::lightning::chain::chainmonitor::MonitorUpdateId) -> crate::lightning::chain::ChannelMonitorUpdateStatus,
+ /// Frees any resources associated with this object given its this_arg pointer.
+ /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+ pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+unsafe impl Send for Persist {}
+unsafe impl Sync for Persist {}
+#[no_mangle]
+pub(crate) extern "C" fn Persist_clone_fields(orig: &Persist) -> Persist {
+ Persist {
+ this_arg: orig.this_arg,
+ persist_new_channel: Clone::clone(&orig.persist_new_channel),
+ update_persisted_channel: Clone::clone(&orig.update_persisted_channel),
+ free: Clone::clone(&orig.free),
+ }
+}
+
+use lightning::chain::chainmonitor::Persist as rustPersist;
+impl rustPersist<crate::lightning::chain::keysinterface::WriteableEcdsaChannelSigner> for Persist {
+ fn persist_new_channel(&self, mut channel_id: lightning::chain::transaction::OutPoint, mut data: &lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::WriteableEcdsaChannelSigner>, mut update_id: lightning::chain::chainmonitor::MonitorUpdateId) -> lightning::chain::ChannelMonitorUpdateStatus {
+ let mut ret = (self.persist_new_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(channel_id), is_owned: true }, &crate::lightning::chain::channelmonitor::ChannelMonitor { inner: unsafe { ObjOps::nonnull_ptr_to_inner((data as *const lightning::chain::channelmonitor::ChannelMonitor<_, >) as *mut _) }, is_owned: false }, crate::lightning::chain::chainmonitor::MonitorUpdateId { inner: ObjOps::heap_alloc(update_id), is_owned: true });
+ ret.into_native()
+ }
+ fn update_persisted_channel(&self, mut channel_id: lightning::chain::transaction::OutPoint, mut update: Option<&lightning::chain::channelmonitor::ChannelMonitorUpdate>, mut data: &lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::WriteableEcdsaChannelSigner>, mut update_id: lightning::chain::chainmonitor::MonitorUpdateId) -> lightning::chain::ChannelMonitorUpdateStatus {
+ let mut local_update = crate::lightning::chain::channelmonitor::ChannelMonitorUpdate { inner: unsafe { (if update.is_none() { core::ptr::null() } else { ObjOps::nonnull_ptr_to_inner( { (update.unwrap()) }) } as *const lightning::chain::channelmonitor::ChannelMonitorUpdate<>) as *mut _ }, is_owned: false };
+ let mut ret = (self.update_persisted_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(channel_id), is_owned: true }, local_update, &crate::lightning::chain::channelmonitor::ChannelMonitor { inner: unsafe { ObjOps::nonnull_ptr_to_inner((data as *const lightning::chain::channelmonitor::ChannelMonitor<_, >) as *mut _) }, is_owned: false }, crate::lightning::chain::chainmonitor::MonitorUpdateId { inner: ObjOps::heap_alloc(update_id), is_owned: true });
+ ret.into_native()
+ }
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl core::ops::Deref for Persist {
+ type Target = Self;
+ fn deref(&self) -> &Self {
+ self
+ }
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Persist_free(this_ptr: Persist) { }
+impl Drop for Persist {
+ fn drop(&mut self) {
+ if let Some(f) = self.free {
+ f(self.this_arg);
+ }
+ }
+}
+
+use lightning::chain::chainmonitor::LockedChannelMonitor as nativeLockedChannelMonitorImport;
+pub(crate) type nativeLockedChannelMonitor = nativeLockedChannelMonitorImport<'static, crate::lightning::chain::keysinterface::WriteableEcdsaChannelSigner>;
+
+/// A read-only reference to a current ChannelMonitor.
+///
+/// Note that this holds a mutex in [`ChainMonitor`] and may block other events until it is
+/// released.
+#[must_use]
+#[repr(C)]
+pub struct LockedChannelMonitor {
+ /// A pointer to the opaque Rust object.
+
+ /// Nearly everywhere, inner must be non-null, however in places where
+ /// the Rust equivalent takes an Option, it may be set to null to indicate None.
+ pub inner: *mut nativeLockedChannelMonitor,
+ /// Indicates that this is the only struct which contains the same pointer.
+
+ /// Rust functions which take ownership of an object provided via an argument require
+ /// this to be true and invalidate the object pointed to by inner.
+ pub is_owned: bool,
+}
+
+impl Drop for LockedChannelMonitor {
+ fn drop(&mut self) {
+ if self.is_owned && !<*mut nativeLockedChannelMonitor>::is_null(self.inner) {
+ let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
+ }
+ }
+}
+/// Frees any resources used by the LockedChannelMonitor, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn LockedChannelMonitor_free(this_obj: LockedChannelMonitor) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn LockedChannelMonitor_free_void(this_ptr: *mut c_void) {
+ let _ = unsafe { Box::from_raw(this_ptr as *mut nativeLockedChannelMonitor) };
+}
+#[allow(unused)]
+impl LockedChannelMonitor {
+ pub(crate) fn get_native_ref(&self) -> &'static nativeLockedChannelMonitor {
+ unsafe { &*ObjOps::untweak_ptr(self.inner) }
+ }
+ pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeLockedChannelMonitor {
+ unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
+ }
+ /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
+ pub(crate) fn take_inner(mut self) -> *mut nativeLockedChannelMonitor {
+ assert!(self.is_owned);
+ let ret = ObjOps::untweak_ptr(self.inner);
+ self.inner = core::ptr::null_mut();
+ ret
+ }
+}
+