Launch VSS, Expose build_with_vss* methods in bindings.

.github/workflows/vss-integration.yml

@@ -74,8 +74,8 @@ jobs:
         run: |
           cd ldk-node
           export TEST_VSS_BASE_URL="http://localhost:8080/vss"
-          RUSTFLAGS="--cfg vss_test --cfg vss" cargo build --verbose --color always
-          RUSTFLAGS="--cfg vss_test --cfg vss" cargo test --test integration_tests_vss
+          RUSTFLAGS="--cfg vss_test" cargo build --verbose --color always
+          RUSTFLAGS="--cfg vss_test" cargo test --test integration_tests_vss
 
       - name: Cleanup
         run: |

Cargo.toml

@@ -76,7 +76,6 @@ uniffi = { version = "0.27.3", features = ["build"], optional = true }
 serde = { version = "1.0.210", default-features = false, features = ["std", "derive"] }
 serde_json = { version = "1.0.128", default-features = false, features = ["std"] }
 
-[target.'cfg(vss)'.dependencies]
 vss-client = "0.3"
 prost = { version = "0.11.6", default-features = false}
 
@@ -113,7 +112,6 @@ panic = "abort"
 level = "forbid"
 # When adding a new cfg attribute, ensure that it is added to this list.
 check-cfg = [
-	"cfg(vss)",
 	"cfg(vss_test)",
 	"cfg(ldk_bench)",
 	"cfg(tokio_unstable)",

bindings/ldk_node.udl

@@ -50,6 +50,12 @@ interface Builder {
 	Node build();
 	[Throws=BuildError]
 	Node build_with_fs_store();
+	[Throws=BuildError]
+	Node build_with_vss_store(string vss_url, string store_id, string lnurl_auth_server_url, record<string, string> fixed_headers);
+	[Throws=BuildError]
+	Node build_with_vss_store_and_fixed_headers(string vss_url, string store_id, record<string, string> fixed_headers);
+	[Throws=BuildError]
+	Node build_with_vss_store_and_header_provider(string vss_url, string store_id, VssHeaderProvider header_provider);
 };
 
 interface Node {
@@ -251,6 +257,20 @@ enum BuildError {
 	"LoggerSetupFailed",
 };
 
+[Trait]
+interface VssHeaderProvider {
+	[Async, Throws=VssHeaderProviderError]
+	record<string, string> get_headers([ByRef]sequence<u8> request);
+};
+
+[Error]
+enum VssHeaderProviderError {
+	"InvalidData",
+	"RequestError",
+	"AuthorizationError",
+	"InternalError",
+};
+
 [Enum]
 interface Event {
 	PaymentSuccessful(PaymentId? payment_id, PaymentHash payment_hash, u64? fee_paid_msat);

src/builder.rs

@@ -14,7 +14,6 @@ use crate::fee_estimator::OnchainFeeEstimator;
 use crate::gossip::GossipSource;
 use crate::io::sqlite_store::SqliteStore;
 use crate::io::utils::{read_node_metrics, write_node_metrics};
-#[cfg(any(vss, vss_test))]
 use crate::io::vss_store::VssStore;
 use crate::liquidity::LiquiditySource;
 use crate::logger::{log_error, log_info, FilesystemLogger, Logger};
@@ -64,9 +63,7 @@ use bip39::Mnemonic;
 use bitcoin::secp256k1::PublicKey;
 use bitcoin::{BlockHash, Network};
 
-#[cfg(any(vss, vss_test))]
 use bitcoin::bip32::{ChildNumber, Xpriv};
-#[cfg(any(vss, vss_test))]
 use std::collections::HashMap;
 use std::convert::TryInto;
 use std::default::Default;
@@ -76,7 +73,6 @@ use std::path::PathBuf;
 use std::sync::atomic::AtomicBool;
 use std::sync::{Arc, Mutex, RwLock};
 use std::time::SystemTime;
-#[cfg(any(vss, vss_test))]
 use vss_client::headers::{FixedHeaders, LnurlAuthToJwtProvider, VssHeaderProvider};
 
 #[derive(Debug, Clone)]
@@ -389,7 +385,6 @@ impl NodeBuilder {
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
 	/// [LNURL-auth]: https://github.com/lnurl/luds/blob/luds/04.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store(
 		&self, vss_url: String, store_id: String, lnurl_auth_server_url: String,
 		fixed_headers: HashMap<String, String>,
@@ -439,7 +434,6 @@ impl NodeBuilder {
 	/// unrecoverable, i.e., if they remain unresolved after internal retries are exhausted.
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store_and_fixed_headers(
 		&self, vss_url: String, store_id: String, fixed_headers: HashMap<String, String>,
 	) -> Result<Node, BuildError> {
@@ -459,7 +453,6 @@ impl NodeBuilder {
 	/// unrecoverable, i.e., if they remain unresolved after internal retries are exhausted.
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store_and_header_provider(
 		&self, vss_url: String, store_id: String, header_provider: Arc<dyn VssHeaderProvider>,
 	) -> Result<Node, BuildError> {
@@ -676,7 +669,6 @@ impl ArcedNodeBuilder {
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
 	/// [LNURL-auth]: https://github.com/lnurl/luds/blob/luds/04.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store(
 		&self, vss_url: String, store_id: String, lnurl_auth_server_url: String,
 		fixed_headers: HashMap<String, String>,
@@ -700,7 +692,6 @@ impl ArcedNodeBuilder {
 	/// unrecoverable, i.e., if they remain unresolved after internal retries are exhausted.
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store_and_fixed_headers(
 		&self, vss_url: String, store_id: String, fixed_headers: HashMap<String, String>,
 	) -> Result<Arc<Node>, BuildError> {
@@ -722,7 +713,6 @@ impl ArcedNodeBuilder {
 	/// unrecoverable, i.e., if they remain unresolved after internal retries are exhausted.
 	///
 	/// [VSS]: https://github.com/lightningdevkit/vss-server/blob/main/README.md
-	#[cfg(any(vss, vss_test))]
 	pub fn build_with_vss_store_and_header_provider(
 		&self, vss_url: String, store_id: String, header_provider: Arc<dyn VssHeaderProvider>,
 	) -> Result<Arc<Node>, BuildError> {
@@ -1276,7 +1266,6 @@ fn seed_bytes_from_config(
 	}
 }
 
-#[cfg(any(vss, vss_test))]
 fn derive_vss_xprv(
 	config: Arc<Config>, seed_bytes: &[u8; 64], logger: Arc<FilesystemLogger>,
 ) -> Result<Xpriv, BuildError> {

src/io/mod.rs

@@ -11,7 +11,6 @@ pub mod sqlite_store;
 #[cfg(test)]
 pub(crate) mod test_utils;
 pub(crate) mod utils;
-#[cfg(any(vss, vss_test))]
 pub(crate) mod vss_store;
 
 /// The event queue will be persisted under this key.

src/lib.rs

@@ -100,7 +100,6 @@ pub use bip39;
 pub use bitcoin;
 pub use lightning;
 pub use lightning_invoice;
-#[cfg(any(vss, vss_test))]
 pub use vss_client;
 
 pub use balance::{BalanceDetails, LightningBalance, PendingSweepBalance};

src/uniffi_types.rs

@@ -32,6 +32,8 @@ pub use bitcoin::{Address, BlockHash, Network, OutPoint, Txid};
 
 pub use bip39::Mnemonic;
 
+pub use vss_client::headers::{VssHeaderProvider, VssHeaderProviderError};
+
 use crate::UniffiCustomTypeConverter;
 
 use crate::builder::sanitize_alias;