_ Git - ldk-java/blob - c_sharp/src/org/ldk/structs/Listen.cs

   1
   2 using org.ldk.impl;
   3 using org.ldk.enums;
   4 using org.ldk.util;
   5 using System;
   6
   7 namespace org { namespace ldk { namespace structs {
   8
   9
  10
  11 /** An implementation of Listen */
  12 public interface ListenInterface {
  13         /**Notifies the listener that a block was added at the given height, with the transaction data
  14          * possibly filtered.
  15          */
  16         void filtered_block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height);
  17         /**Notifies the listener that a block was added at the given height.
  18          */
  19         void block_connected(byte[] block, int height);
  20         /**Notifies the listener that a block was removed at the given height.
  21          */
  22         void block_disconnected(byte[] header, int height);
  23 }
  24
  25 /**
  26  * The `Listen` trait is used to notify when blocks have been connected or disconnected from the
  27  * chain.
  28  *
  29  * Useful when needing to replay chain data upon startup or as new chain events occur. Clients
  30  * sourcing chain data using a block-oriented API should prefer this interface over [`Confirm`].
  31  * Such clients fetch the entire header chain whereas clients using [`Confirm`] only fetch headers
  32  * when needed.
  33  *
  34  * By using [`Listen::filtered_block_connected`] this interface supports clients fetching the
  35  * entire header chain and only blocks with matching transaction data using BIP 157 filters or
  36  * other similar filtering.
  37  */
  38 public class Listen : CommonBase {
  39         internal bindings.LDKListen bindings_instance;
  40         internal long instance_idx;
  41
  42         internal Listen(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
  43         ~Listen() {
  44                 if (ptr != 0) { bindings.Listen_free(ptr); }
  45         }
  46
  47         private class LDKListenHolder { internal Listen held; }
  48         private class LDKListenImpl : bindings.LDKListen {
  49                 internal LDKListenImpl(ListenInterface arg, LDKListenHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
  50                 private ListenInterface arg;
  51                 private LDKListenHolder impl_holder;
  52                 public void filtered_block_connected(long _header, long _txdata, int _height) {
  53                         byte[] _header_conv = InternalUtils.decodeUint8Array(_header);
  54                         int _txdata_conv_28_len = InternalUtils.getArrayLength(_txdata);
  55                         TwoTuple_usizeTransactionZ[] _txdata_conv_28_arr = new TwoTuple_usizeTransactionZ[_txdata_conv_28_len];
  56                         for (int c = 0; c < _txdata_conv_28_len; c++) {
  57                                 long _txdata_conv_28 = InternalUtils.getU64ArrayElem(_txdata, c);
  58                                 TwoTuple_usizeTransactionZ _txdata_conv_28_hu_conv = new TwoTuple_usizeTransactionZ(null, _txdata_conv_28);
  59                                 if (_txdata_conv_28_hu_conv != null) { _txdata_conv_28_hu_conv.ptrs_to.AddLast(this); };
  60                                 _txdata_conv_28_arr[c] = _txdata_conv_28_hu_conv;
  61                         }
  62                         bindings.free_buffer(_txdata);
  63                         arg.filtered_block_connected(_header_conv, _txdata_conv_28_arr, _height);
  64                                 GC.KeepAlive(arg);
  65                 }
  66                 public void block_connected(long _block, int _height) {
  67                         byte[] _block_conv = InternalUtils.decodeUint8Array(_block);
  68                         arg.block_connected(_block_conv, _height);
  69                                 GC.KeepAlive(arg);
  70                 }
  71                 public void block_disconnected(long _header, int _height) {
  72                         byte[] _header_conv = InternalUtils.decodeUint8Array(_header);
  73                         arg.block_disconnected(_header_conv, _height);
  74                                 GC.KeepAlive(arg);
  75                 }
  76         }
  77
  78         /** Creates a new instance of Listen from a given implementation */
  79         public static Listen new_impl(ListenInterface arg) {
  80                 LDKListenHolder impl_holder = new LDKListenHolder();
  81                 LDKListenImpl impl = new LDKListenImpl(arg, impl_holder);
  82                 long[] ptr_idx = bindings.LDKListen_new(impl);
  83
  84                 impl_holder.held = new Listen(null, ptr_idx[0]);
  85                 impl_holder.held.instance_idx = ptr_idx[1];
  86                 impl_holder.held.bindings_instance = impl;
  87                 return impl_holder.held;
  88         }
  89
  90         /**
  91          * Notifies the listener that a block was added at the given height, with the transaction data
  92          * possibly filtered.
  93          */
  94         public void filtered_block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height) {
  95                 bindings.Listen_filtered_block_connected(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(txdata, txdata_conv_28 => txdata_conv_28 != null ? txdata_conv_28.ptr : 0)), height);
  96                 GC.KeepAlive(this);
  97                 GC.KeepAlive(header);
  98                 GC.KeepAlive(txdata);
  99                 GC.KeepAlive(height);
 100         }
 101
 102         /**
 103          * Notifies the listener that a block was added at the given height.
 104          */
 105         public void block_connected(byte[] block, int height) {
 106                 bindings.Listen_block_connected(this.ptr, InternalUtils.encodeUint8Array(block), height);
 107                 GC.KeepAlive(this);
 108                 GC.KeepAlive(block);
 109                 GC.KeepAlive(height);
 110         }
 111
 112         /**
 113          * Notifies the listener that a block was removed at the given height.
 114          */
 115         public void block_disconnected(byte[] header, int height) {
 116                 bindings.Listen_block_disconnected(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), height);
 117                 GC.KeepAlive(this);
 118                 GC.KeepAlive(header);
 119                 GC.KeepAlive(height);
 120         }
 121
 122 }
 123 } } }