_ Git - ldk-java/blob - src/main/java/org/ldk/structs/SpendableOutputDescriptor.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 /**
  12  * Describes the necessary information to spend a spendable output.
  13  *
  14  * When on-chain outputs are created by LDK (which our counterparty is not able to claim at any
  15  * point in the future) a [`SpendableOutputs`] event is generated which you must track and be able
  16  * to spend on-chain. The information needed to do this is provided in this enum, including the
  17  * outpoint describing which `txid` and output `index` is available, the full output which exists
  18  * at that `txid`/`index`, and any keys or other information required to sign.
  19  *
  20  * [`SpendableOutputs`]: crate::events::Event::SpendableOutputs
  21  */
  22 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  23 public class SpendableOutputDescriptor extends CommonBase {
  24         private SpendableOutputDescriptor(Object _dummy, long ptr) { super(ptr); }
  25         @Override @SuppressWarnings("deprecation")
  26         protected void finalize() throws Throwable {
  27                 super.finalize();
  28                 if (ptr != 0) { bindings.SpendableOutputDescriptor_free(ptr); }
  29         }
  30         static SpendableOutputDescriptor constr_from_ptr(long ptr) {
  31                 bindings.LDKSpendableOutputDescriptor raw_val = bindings.LDKSpendableOutputDescriptor_ref_from_ptr(ptr);
  32                 if (raw_val.getClass() == bindings.LDKSpendableOutputDescriptor.StaticOutput.class) {
  33                         return new StaticOutput(ptr, (bindings.LDKSpendableOutputDescriptor.StaticOutput)raw_val);
  34                 }
  35                 if (raw_val.getClass() == bindings.LDKSpendableOutputDescriptor.DelayedPaymentOutput.class) {
  36                         return new DelayedPaymentOutput(ptr, (bindings.LDKSpendableOutputDescriptor.DelayedPaymentOutput)raw_val);
  37                 }
  38                 if (raw_val.getClass() == bindings.LDKSpendableOutputDescriptor.StaticPaymentOutput.class) {
  39                         return new StaticPaymentOutput(ptr, (bindings.LDKSpendableOutputDescriptor.StaticPaymentOutput)raw_val);
  40                 }
  41                 assert false; return null; // Unreachable without extending the (internal) bindings interface
  42         }
  43
  44         /**
  45          * An output to a script which was provided via [`SignerProvider`] directly, either from
  46          * [`get_destination_script`] or [`get_shutdown_scriptpubkey`], thus you should already
  47          * know how to spend it. No secret keys are provided as LDK was never given any key.
  48          * These may include outputs from a transaction punishing our counterparty or claiming an HTLC
  49          * on-chain using the payment preimage or after it has timed out.
  50          *
  51          * [`get_shutdown_scriptpubkey`]: SignerProvider::get_shutdown_scriptpubkey
  52          * [`get_destination_script`]: SignerProvider::get_shutdown_scriptpubkey
  53          */
  54         public final static class StaticOutput extends SpendableOutputDescriptor {
  55                 /**
  56                  * The outpoint which is spendable.
  57                 */
  58                 public final org.ldk.structs.OutPoint outpoint;
  59                 /**
  60                  * The output which is referenced by the given outpoint.
  61                 */
  62                 public final org.ldk.structs.TxOut output;
  63                 private StaticOutput(long ptr, bindings.LDKSpendableOutputDescriptor.StaticOutput obj) {
  64                         super(null, ptr);
  65                         long outpoint = obj.outpoint;
  66                         org.ldk.structs.OutPoint outpoint_hu_conv = null; if (outpoint < 0 || outpoint > 4096) { outpoint_hu_conv = new org.ldk.structs.OutPoint(null, outpoint); }
  67                         if (outpoint_hu_conv != null) { outpoint_hu_conv.ptrs_to.add(this); };
  68                         this.outpoint = outpoint_hu_conv;
  69                         long output = obj.output;
  70                         TxOut output_conv = new TxOut(null, output);
  71                         this.output = output_conv;
  72                 }
  73         }
  74         /**
  75          * An output to a P2WSH script which can be spent with a single signature after an `OP_CSV`
  76          * delay.
  77          *
  78          * The witness in the spending input should be:
  79          * ```bitcoin
  80          * <BIP 143 signature> <empty vector> (MINIMALIF standard rule) <provided witnessScript>
  81          * ```
  82          *
  83          * Note that the `nSequence` field in the spending input must be set to
  84          * [`DelayedPaymentOutputDescriptor::to_self_delay`] (which means the transaction is not
  85          * broadcastable until at least [`DelayedPaymentOutputDescriptor::to_self_delay`] blocks after
  86          * the outpoint confirms, see [BIP
  87          * 68](https://github.com/bitcoin/bips/blob/master/bip-0068.mediawiki)). Also note that LDK
  88          * won't generate a [`SpendableOutputDescriptor`] until the corresponding block height
  89          * is reached.
  90          *
  91          * These are generally the result of a \"revocable\" output to us, spendable only by us unless
  92          * it is an output from an old state which we broadcast (which should never happen).
  93          *
  94          * To derive the delayed payment key which is used to sign this input, you must pass the
  95          * holder [`InMemorySigner::delayed_payment_base_key`] (i.e., the private key which corresponds to the
  96          * [`ChannelPublicKeys::delayed_payment_basepoint`] in [`ChannelSigner::pubkeys`]) and the provided
  97          * [`DelayedPaymentOutputDescriptor::per_commitment_point`] to [`chan_utils::derive_private_key`]. The public key can be
  98          * generated without the secret key using [`chan_utils::derive_public_key`] and only the
  99          * [`ChannelPublicKeys::delayed_payment_basepoint`] which appears in [`ChannelSigner::pubkeys`].
 100          *
 101          * To derive the [`DelayedPaymentOutputDescriptor::revocation_pubkey`] provided here (which is
 102          * used in the witness script generation), you must pass the counterparty
 103          * [`ChannelPublicKeys::revocation_basepoint`] (which appears in the call to
 104          * [`ChannelSigner::provide_channel_parameters`]) and the provided
 105          * [`DelayedPaymentOutputDescriptor::per_commitment_point`] to
 106          * [`chan_utils::derive_public_revocation_key`].
 107          *
 108          * The witness script which is hashed and included in the output `script_pubkey` may be
 109          * regenerated by passing the [`DelayedPaymentOutputDescriptor::revocation_pubkey`] (derived
 110          * as explained above), our delayed payment pubkey (derived as explained above), and the
 111          * [`DelayedPaymentOutputDescriptor::to_self_delay`] contained here to
 112          * [`chan_utils::get_revokeable_redeemscript`].
 113          */
 114         public final static class DelayedPaymentOutput extends SpendableOutputDescriptor {
 115                 public final org.ldk.structs.DelayedPaymentOutputDescriptor delayed_payment_output;
 116                 private DelayedPaymentOutput(long ptr, bindings.LDKSpendableOutputDescriptor.DelayedPaymentOutput obj) {
 117                         super(null, ptr);
 118                         long delayed_payment_output = obj.delayed_payment_output;
 119                         org.ldk.structs.DelayedPaymentOutputDescriptor delayed_payment_output_hu_conv = null; if (delayed_payment_output < 0 || delayed_payment_output > 4096) { delayed_payment_output_hu_conv = new org.ldk.structs.DelayedPaymentOutputDescriptor(null, delayed_payment_output); }
 120                         if (delayed_payment_output_hu_conv != null) { delayed_payment_output_hu_conv.ptrs_to.add(this); };
 121                         this.delayed_payment_output = delayed_payment_output_hu_conv;
 122                 }
 123         }
 124         /**
 125          * An output to a P2WPKH, spendable exclusively by our payment key (i.e., the private key
 126          * which corresponds to the `payment_point` in [`ChannelSigner::pubkeys`]). The witness
 127          * in the spending input is, thus, simply:
 128          * ```bitcoin
 129          * <BIP 143 signature> <payment key>
 130          * ```
 131          *
 132          * These are generally the result of our counterparty having broadcast the current state,
 133          * allowing us to claim the non-HTLC-encumbered outputs immediately.
 134          */
 135         public final static class StaticPaymentOutput extends SpendableOutputDescriptor {
 136                 public final org.ldk.structs.StaticPaymentOutputDescriptor static_payment_output;
 137                 private StaticPaymentOutput(long ptr, bindings.LDKSpendableOutputDescriptor.StaticPaymentOutput obj) {
 138                         super(null, ptr);
 139                         long static_payment_output = obj.static_payment_output;
 140                         org.ldk.structs.StaticPaymentOutputDescriptor static_payment_output_hu_conv = null; if (static_payment_output < 0 || static_payment_output > 4096) { static_payment_output_hu_conv = new org.ldk.structs.StaticPaymentOutputDescriptor(null, static_payment_output); }
 141                         if (static_payment_output_hu_conv != null) { static_payment_output_hu_conv.ptrs_to.add(this); };
 142                         this.static_payment_output = static_payment_output_hu_conv;
 143                 }
 144         }
 145         long clone_ptr() {
 146                 long ret = bindings.SpendableOutputDescriptor_clone_ptr(this.ptr);
 147                 Reference.reachabilityFence(this);
 148                 return ret;
 149         }
 150
 151         /**
 152          * Creates a copy of the SpendableOutputDescriptor
 153          */
 154         public SpendableOutputDescriptor clone() {
 155                 long ret = bindings.SpendableOutputDescriptor_clone(this.ptr);
 156                 Reference.reachabilityFence(this);
 157                 if (ret >= 0 && ret <= 4096) { return null; }
 158                 org.ldk.structs.SpendableOutputDescriptor ret_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret);
 159                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 160                 return ret_hu_conv;
 161         }
 162
 163         /**
 164          * Utility method to constructs a new StaticOutput-variant SpendableOutputDescriptor
 165          */
 166         public static SpendableOutputDescriptor static_output(org.ldk.structs.OutPoint outpoint, org.ldk.structs.TxOut output) {
 167                 long ret = bindings.SpendableOutputDescriptor_static_output(outpoint == null ? 0 : outpoint.ptr, output.ptr);
 168                 Reference.reachabilityFence(outpoint);
 169                 Reference.reachabilityFence(output);
 170                 if (ret >= 0 && ret <= 4096) { return null; }
 171                 org.ldk.structs.SpendableOutputDescriptor ret_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret);
 172                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
 173                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(outpoint); };
 174                 return ret_hu_conv;
 175         }
 176
 177         /**
 178          * Utility method to constructs a new DelayedPaymentOutput-variant SpendableOutputDescriptor
 179          */
 180         public static SpendableOutputDescriptor delayed_payment_output(org.ldk.structs.DelayedPaymentOutputDescriptor a) {
 181                 long ret = bindings.SpendableOutputDescriptor_delayed_payment_output(a == null ? 0 : a.ptr);
 182                 Reference.reachabilityFence(a);
 183                 if (ret >= 0 && ret <= 4096) { return null; }
 184                 org.ldk.structs.SpendableOutputDescriptor ret_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret);
 185                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
 186                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(a); };
 187                 return ret_hu_conv;
 188         }
 189
 190         /**
 191          * Utility method to constructs a new StaticPaymentOutput-variant SpendableOutputDescriptor
 192          */
 193         public static SpendableOutputDescriptor static_payment_output(org.ldk.structs.StaticPaymentOutputDescriptor a) {
 194                 long ret = bindings.SpendableOutputDescriptor_static_payment_output(a == null ? 0 : a.ptr);
 195                 Reference.reachabilityFence(a);
 196                 if (ret >= 0 && ret <= 4096) { return null; }
 197                 org.ldk.structs.SpendableOutputDescriptor ret_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret);
 198                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
 199                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(a); };
 200                 return ret_hu_conv;
 201         }
 202
 203         /**
 204          * Checks if two SpendableOutputDescriptors contain equal inner contents.
 205          * This ignores pointers and is_owned flags and looks at the values in fields.
 206          */
 207         public boolean eq(org.ldk.structs.SpendableOutputDescriptor b) {
 208                 boolean ret = bindings.SpendableOutputDescriptor_eq(this.ptr, b == null ? 0 : b.ptr);
 209                 Reference.reachabilityFence(this);
 210                 Reference.reachabilityFence(b);
 211                 return ret;
 212         }
 213
 214         @Override public boolean equals(Object o) {
 215                 if (!(o instanceof SpendableOutputDescriptor)) return false;
 216                 return this.eq((SpendableOutputDescriptor)o);
 217         }
 218         /**
 219          * Serialize the SpendableOutputDescriptor object into a byte array which can be read by SpendableOutputDescriptor_read
 220          */
 221         public byte[] write() {
 222                 byte[] ret = bindings.SpendableOutputDescriptor_write(this.ptr);
 223                 Reference.reachabilityFence(this);
 224                 return ret;
 225         }
 226
 227         /**
 228          * Read a SpendableOutputDescriptor from a byte array, created by SpendableOutputDescriptor_write
 229          */
 230         public static Result_SpendableOutputDescriptorDecodeErrorZ read(byte[] ser) {
 231                 long ret = bindings.SpendableOutputDescriptor_read(ser);
 232                 Reference.reachabilityFence(ser);
 233                 if (ret >= 0 && ret <= 4096) { return null; }
 234                 Result_SpendableOutputDescriptorDecodeErrorZ ret_hu_conv = Result_SpendableOutputDescriptorDecodeErrorZ.constr_from_ptr(ret);
 235                 return ret_hu_conv;
 236         }
 237
 238 }