[Java] Update auto-generated bindings
[ldk-java] / src / main / java / org / ldk / structs / Filter.java
1 package org.ldk.structs;
2
3 import org.ldk.impl.bindings;
4 import org.ldk.enums.*;
5 import org.ldk.util.*;
6 import java.util.Arrays;
7 import java.lang.ref.Reference;
8 import javax.annotation.Nullable;
9
10 /**
11  * The `Filter` trait defines behavior for indicating chain activity of interest pertaining to
12  * channels.
13  * 
14  * This is useful in order to have a [`Watch`] implementation convey to a chain source which
15  * transactions to be notified of. Notification may take the form of pre-filtering blocks or, in
16  * the case of [BIP 157]/[BIP 158], only fetching a block if the compact filter matches. If
17  * receiving full blocks from a chain source, any further filtering is unnecessary.
18  * 
19  * After an output has been registered, subsequent block retrievals from the chain source must not
20  * exclude any transactions matching the new criteria nor any in-block descendants of such
21  * transactions.
22  * 
23  * Note that use as part of a [`Watch`] implementation involves reentrancy. Therefore, the `Filter`
24  * should not block on I/O. Implementations should instead queue the newly monitored data to be
25  * processed later. Then, in order to block until the data has been processed, any [`Watch`]
26  * invocation that has called the `Filter` must return [`TemporaryFailure`].
27  * 
28  * [`TemporaryFailure`]: ChannelMonitorUpdateErr::TemporaryFailure
29  * [BIP 157]: https://github.com/bitcoin/bips/blob/master/bip-0157.mediawiki
30  * [BIP 158]: https://github.com/bitcoin/bips/blob/master/bip-0158.mediawiki
31  */
32 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
33 public class Filter extends CommonBase {
34         final bindings.LDKFilter bindings_instance;
35         Filter(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
36         private Filter(bindings.LDKFilter arg) {
37                 super(bindings.LDKFilter_new(arg));
38                 this.ptrs_to.add(arg);
39                 this.bindings_instance = arg;
40         }
41         @Override @SuppressWarnings("deprecation")
42         protected void finalize() throws Throwable {
43                 if (ptr != 0) { bindings.Filter_free(ptr); } super.finalize();
44         }
45
46         public static interface FilterInterface {
47                 /**
48                  * Registers interest in a transaction with `txid` and having an output with `script_pubkey` as
49                  * a spending condition.
50                  */
51                 void register_tx(byte[] txid, byte[] script_pubkey);
52                 /**
53                  * Registers interest in spends of a transaction output.
54                  * 
55                  * Optionally, when `output.block_hash` is set, should return any transaction spending the
56                  * output that is found in the corresponding block along with its index.
57                  * 
58                  * This return value is useful for Electrum clients in order to supply in-block descendant
59                  * transactions which otherwise were not included. This is not necessary for other clients if
60                  * such descendant transactions were already included (e.g., when a BIP 157 client provides the
61                  * full block).
62                  */
63                 Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output);
64         }
65         private static class LDKFilterHolder { Filter held; }
66         public static Filter new_impl(FilterInterface arg) {
67                 final LDKFilterHolder impl_holder = new LDKFilterHolder();
68                 impl_holder.held = new Filter(new bindings.LDKFilter() {
69                         @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
70                                 arg.register_tx(txid, script_pubkey);
71                                 Reference.reachabilityFence(arg);
72                         }
73                         @Override public long register_output(long output) {
74                                 WatchedOutput output_hu_conv = null; if (output < 0 || output > 4096) { output_hu_conv = new WatchedOutput(null, output); }
75                                 output_hu_conv.ptrs_to.add(this);
76                                 Option_C2Tuple_usizeTransactionZZ ret = arg.register_output(output_hu_conv);
77                                 Reference.reachabilityFence(arg);
78                                 long result = ret == null ? 0 : ret.clone_ptr();
79                                 return result;
80                         }
81                 });
82                 return impl_holder.held;
83         }
84         /**
85          * Registers interest in a transaction with `txid` and having an output with `script_pubkey` as
86          * a spending condition.
87          */
88         public void register_tx(byte[] txid, byte[] script_pubkey) {
89                 bindings.Filter_register_tx(this.ptr, InternalUtils.check_arr_len(txid, 32), script_pubkey);
90                 Reference.reachabilityFence(this);
91                 Reference.reachabilityFence(txid);
92                 Reference.reachabilityFence(script_pubkey);
93         }
94
95         /**
96          * Registers interest in spends of a transaction output.
97          * 
98          * Optionally, when `output.block_hash` is set, should return any transaction spending the
99          * output that is found in the corresponding block along with its index.
100          * 
101          * This return value is useful for Electrum clients in order to supply in-block descendant
102          * transactions which otherwise were not included. This is not necessary for other clients if
103          * such descendant transactions were already included (e.g., when a BIP 157 client provides the
104          * full block).
105          */
106         public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) {
107                 long ret = bindings.Filter_register_output(this.ptr, output == null ? 0 : output.ptr & ~1);
108                 Reference.reachabilityFence(this);
109                 Reference.reachabilityFence(output);
110                 if (ret >= 0 && ret <= 4096) { return null; }
111                 org.ldk.structs.Option_C2Tuple_usizeTransactionZZ ret_hu_conv = org.ldk.structs.Option_C2Tuple_usizeTransactionZZ.constr_from_ptr(ret);
112                 ret_hu_conv.ptrs_to.add(this);
113                 return ret_hu_conv;
114         }
115
116 }