_ Git - ldk-java/blob - c_sharp/src/org/ldk/structs/NodeIdLookUp.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 NodeIdLookUp */
  12 public interface NodeIdLookUpInterface {
  13         /**Returns the node id of the forwarding node's channel counterparty with `short_channel_id`.
  14          *
  15          * Here, the forwarding node is referring to the node of the [`OnionMessenger`] parameterized
  16          * by the [`NodeIdLookUp`] and the counterparty to one of that node's peers.
  17          *
  18          * [`OnionMessenger`]: crate::onion_message::messenger::OnionMessenger
  19          *
  20          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
  21          */
  22         byte[] next_node_id(long short_channel_id);
  23 }
  24
  25 /**
  26  * An interface for looking up the node id of a channel counterparty for the purpose of forwarding
  27  * an [`OnionMessage`].
  28  *
  29  * [`OnionMessage`]: crate::ln::msgs::OnionMessage
  30  */
  31 public class NodeIdLookUp : CommonBase {
  32         internal bindings.LDKNodeIdLookUp bindings_instance;
  33         internal long instance_idx;
  34
  35         internal NodeIdLookUp(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
  36         ~NodeIdLookUp() {
  37                 if (ptr != 0) { bindings.NodeIdLookUp_free(ptr); }
  38         }
  39
  40         private class LDKNodeIdLookUpHolder { internal NodeIdLookUp held; }
  41         private class LDKNodeIdLookUpImpl : bindings.LDKNodeIdLookUp {
  42                 internal LDKNodeIdLookUpImpl(NodeIdLookUpInterface arg, LDKNodeIdLookUpHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
  43                 private NodeIdLookUpInterface arg;
  44                 private LDKNodeIdLookUpHolder impl_holder;
  45                 public long next_node_id(long _short_channel_id) {
  46                         byte[] ret = arg.next_node_id(_short_channel_id);
  47                                 GC.KeepAlive(arg);
  48                         long result = InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(ret, 33));
  49                         return result;
  50                 }
  51         }
  52
  53         /** Creates a new instance of NodeIdLookUp from a given implementation */
  54         public static NodeIdLookUp new_impl(NodeIdLookUpInterface arg) {
  55                 LDKNodeIdLookUpHolder impl_holder = new LDKNodeIdLookUpHolder();
  56                 LDKNodeIdLookUpImpl impl = new LDKNodeIdLookUpImpl(arg, impl_holder);
  57                 long[] ptr_idx = bindings.LDKNodeIdLookUp_new(impl);
  58
  59                 impl_holder.held = new NodeIdLookUp(null, ptr_idx[0]);
  60                 impl_holder.held.instance_idx = ptr_idx[1];
  61                 impl_holder.held.bindings_instance = impl;
  62                 return impl_holder.held;
  63         }
  64
  65         /**
  66          * Returns the node id of the forwarding node's channel counterparty with `short_channel_id`.
  67          *
  68          * Here, the forwarding node is referring to the node of the [`OnionMessenger`] parameterized
  69          * by the [`NodeIdLookUp`] and the counterparty to one of that node's peers.
  70          *
  71          * [`OnionMessenger`]: crate::onion_message::messenger::OnionMessenger
  72          *
  73          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
  74          */
  75         public byte[] next_node_id(long short_channel_id) {
  76                 long ret = bindings.NodeIdLookUp_next_node_id(this.ptr, short_channel_id);
  77                 GC.KeepAlive(this);
  78                 GC.KeepAlive(short_channel_id);
  79                 if (ret >= 0 && ret <= 4096) { return null; }
  80                 byte[] ret_conv = InternalUtils.decodeUint8Array(ret);
  81                 return ret_conv;
  82         }
  83
  84 }
  85 } } }