import javax.annotation.Nullable;
/**
- * The `Confirm` trait is used to notify when transactions have been confirmed on chain or
- * unconfirmed during a chain reorganization.
+ * The `Confirm` trait is used to notify LDK when relevant transactions have been confirmed on
+ * chain or unconfirmed during a chain reorganization.
*
* Clients sourcing chain data using a transaction-oriented API should prefer this interface over
- * [`Listen`]. For instance, an Electrum client may implement [`Filter`] by subscribing to activity
- * related to registered transactions and outputs. Upon notification, it would pass along the
- * matching transactions using this interface.
+ * [`Listen`]. For instance, an Electrum-based transaction sync implementation may implement
+ * [`Filter`] to subscribe to relevant transactions and unspent outputs it should monitor for
+ * on-chain activity. Then, it needs to notify LDK via this interface upon observing any changes
+ * with reference to the confirmation status of the monitored objects.
*
* # Use
- *
* The intended use is as follows:
- * - Call [`transactions_confirmed`] to process any on-chain activity of interest.
- * - Call [`transaction_unconfirmed`] to process any transaction returned by [`get_relevant_txids`]
- * that has been reorganized out of the chain.
- * - Call [`best_block_updated`] whenever a new chain tip becomes available.
+ * - Call [`transactions_confirmed`] to notify LDK whenever any of the registered transactions or
+ * outputs are, respectively, confirmed or spent on chain.
+ * - Call [`transaction_unconfirmed`] to notify LDK whenever any transaction returned by
+ * [`get_relevant_txids`] is no longer confirmed in the block with the given block hash.
+ * - Call [`best_block_updated`] to notify LDK whenever a new chain tip becomes available.
*
* # Order
*
* Clients must call these methods in chain order. Specifically:
- * - Transactions confirmed in a block must be given before transactions confirmed in a later
- * block.
+ * - Transactions which are confirmed in a particular block must be given before transactions
+ * confirmed in a later block.
* - Dependent transactions within the same block must be given in topological order, possibly in
* separate calls.
- * - Unconfirmed transactions must be given after the original confirmations and before any
- * reconfirmation.
+ * - All unconfirmed transactions must be given after the original confirmations and before *any*
+ * reconfirmations, i.e., [`transactions_confirmed`] and [`transaction_unconfirmed`] calls should
+ * never be interleaved, but always conduced *en bloc*.
+ * - Any reconfirmed transactions need to be explicitly unconfirmed before they are reconfirmed
+ * in regard to the new block.
*
* See individual method documentation for further details.
*
public static interface ConfirmInterface {
/**
- * Processes transactions confirmed in a block with a given header and height.
+ * Notifies LDK of transactions confirmed in a block with a given header and height.
*
- * Should be called for any transactions registered by [`Filter::register_tx`] or any
+ * Must be called for any transactions registered by [`Filter::register_tx`] or any
* transactions spending an output registered by [`Filter::register_output`]. Such transactions
* appearing in the same block do not need to be included in the same call; instead, multiple
* calls with additional transactions may be made so long as they are made in [chain order].
*/
void transactions_confirmed(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height);
/**
- * Processes a transaction that is no longer confirmed as result of a chain reorganization.
+ * Notifies LDK of a transaction that is no longer confirmed as result of a chain reorganization.
*
- * Should be called for any transaction returned by [`get_relevant_txids`] if it has been
- * reorganized out of the best chain. Once called, the given transaction will not be returned
+ * Must be called for any transaction returned by [`get_relevant_txids`] if it has been
+ * reorganized out of the best chain or if it is no longer confirmed in the block with the
+ * given block hash. Once called, the given transaction will not be returned
* by [`get_relevant_txids`], unless it has been reconfirmed via [`transactions_confirmed`].
*
* [`get_relevant_txids`]: Self::get_relevant_txids
*/
void transaction_unconfirmed(byte[] txid);
/**
- * Processes an update to the best header connected at the given height.
+ * Notifies LDK of an update to the best header connected at the given height.
*
- * Should be called when a new header is available but may be skipped for intermediary blocks
- * if they become available at the same time.
+ * Must be called whenever a new chain tip becomes available. May be skipped for intermediary
+ * blocks.
*/
void best_block_updated(byte[] header, int height);
/**
- * Returns transactions that should be monitored for reorganization out of the chain.
+ * Returns transactions that must be monitored for reorganization out of the chain along
+ * with the hash of the block as part of which it had been previously confirmed.
*
* Will include any transactions passed to [`transactions_confirmed`] that have insufficient
* confirmations to be safe from a chain reorganization. Will not include any transactions
* passed to [`transaction_unconfirmed`], unless later reconfirmed.
*
- * May be called to determine the subset of transactions that must still be monitored for
+ * Must be called to determine the subset of transactions that must be monitored for
* reorganization. Will be idempotent between calls but may change as a result of calls to the
- * other interface methods. Thus, this is useful to determine which transactions may need to be
+ * other interface methods. Thus, this is useful to determine which transactions must be
* given to [`transaction_unconfirmed`].
*
+ * If any of the returned transactions are confirmed in a block other than the one with the
+ * given hash, they need to be unconfirmed and reconfirmed via [`transaction_unconfirmed`] and
+ * [`transactions_confirmed`], respectively.
+ *
* [`transactions_confirmed`]: Self::transactions_confirmed
* [`transaction_unconfirmed`]: Self::transaction_unconfirmed
*/
- byte[][] get_relevant_txids();
+ TwoTuple_TxidBlockHashZ[] get_relevant_txids();
}
private static class LDKConfirmHolder { Confirm held; }
public static Confirm new_impl(ConfirmInterface arg) {
arg.best_block_updated(header, height);
Reference.reachabilityFence(arg);
}
- @Override public byte[][] get_relevant_txids() {
- byte[][] ret = arg.get_relevant_txids();
+ @Override public long[] get_relevant_txids() {
+ TwoTuple_TxidBlockHashZ[] ret = arg.get_relevant_txids();
Reference.reachabilityFence(arg);
- byte[][] result = ret != null ? Arrays.stream(ret).map(ret_conv_8 -> InternalUtils.check_arr_len(ret_conv_8, 32)).toArray(byte[][]::new) : null;
+ long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_25 -> ret_conv_25 == null ? 0 : ret_conv_25.clone_ptr()).toArray() : null;
return result;
}
});
return impl_holder.held;
}
/**
- * Processes transactions confirmed in a block with a given header and height.
+ * Notifies LDK of transactions confirmed in a block with a given header and height.
*
- * Should be called for any transactions registered by [`Filter::register_tx`] or any
+ * Must be called for any transactions registered by [`Filter::register_tx`] or any
* transactions spending an output registered by [`Filter::register_output`]. Such transactions
* appearing in the same block do not need to be included in the same call; instead, multiple
* calls with additional transactions may be made so long as they are made in [chain order].
}
/**
- * Processes a transaction that is no longer confirmed as result of a chain reorganization.
+ * Notifies LDK of a transaction that is no longer confirmed as result of a chain reorganization.
*
- * Should be called for any transaction returned by [`get_relevant_txids`] if it has been
- * reorganized out of the best chain. Once called, the given transaction will not be returned
+ * Must be called for any transaction returned by [`get_relevant_txids`] if it has been
+ * reorganized out of the best chain or if it is no longer confirmed in the block with the
+ * given block hash. Once called, the given transaction will not be returned
* by [`get_relevant_txids`], unless it has been reconfirmed via [`transactions_confirmed`].
*
* [`get_relevant_txids`]: Self::get_relevant_txids
}
/**
- * Processes an update to the best header connected at the given height.
+ * Notifies LDK of an update to the best header connected at the given height.
*
- * Should be called when a new header is available but may be skipped for intermediary blocks
- * if they become available at the same time.
+ * Must be called whenever a new chain tip becomes available. May be skipped for intermediary
+ * blocks.
*/
public void best_block_updated(byte[] header, int height) {
bindings.Confirm_best_block_updated(this.ptr, InternalUtils.check_arr_len(header, 80), height);
}
/**
- * Returns transactions that should be monitored for reorganization out of the chain.
+ * Returns transactions that must be monitored for reorganization out of the chain along
+ * with the hash of the block as part of which it had been previously confirmed.
*
* Will include any transactions passed to [`transactions_confirmed`] that have insufficient
* confirmations to be safe from a chain reorganization. Will not include any transactions
* passed to [`transaction_unconfirmed`], unless later reconfirmed.
*
- * May be called to determine the subset of transactions that must still be monitored for
+ * Must be called to determine the subset of transactions that must be monitored for
* reorganization. Will be idempotent between calls but may change as a result of calls to the
- * other interface methods. Thus, this is useful to determine which transactions may need to be
+ * other interface methods. Thus, this is useful to determine which transactions must be
* given to [`transaction_unconfirmed`].
*
+ * If any of the returned transactions are confirmed in a block other than the one with the
+ * given hash, they need to be unconfirmed and reconfirmed via [`transaction_unconfirmed`] and
+ * [`transactions_confirmed`], respectively.
+ *
* [`transactions_confirmed`]: Self::transactions_confirmed
* [`transaction_unconfirmed`]: Self::transaction_unconfirmed
*/
- public byte[][] get_relevant_txids() {
- byte[][] ret = bindings.Confirm_get_relevant_txids(this.ptr);
+ public TwoTuple_TxidBlockHashZ[] get_relevant_txids() {
+ long[] ret = bindings.Confirm_get_relevant_txids(this.ptr);
Reference.reachabilityFence(this);
- return ret;
+ int ret_conv_25_len = ret.length;
+ TwoTuple_TxidBlockHashZ[] ret_conv_25_arr = new TwoTuple_TxidBlockHashZ[ret_conv_25_len];
+ for (int z = 0; z < ret_conv_25_len; z++) {
+ long ret_conv_25 = ret[z];
+ TwoTuple_TxidBlockHashZ ret_conv_25_hu_conv = new TwoTuple_TxidBlockHashZ(null, ret_conv_25);
+ if (ret_conv_25_hu_conv != null) { ret_conv_25_hu_conv.ptrs_to.add(this); };
+ ret_conv_25_arr[z] = ret_conv_25_hu_conv;
+ }
+ return ret_conv_25_arr;
}
}
projects / ldk-java / blobdiff