feat: Async support for dlc-manager

Author: bennyhodl

Diff for: dlc-manager/Cargo.toml

@@ -14,13 +14,15 @@ std = ["dlc/std", "dlc-messages/std", "dlc-trie/std", "bitcoin/std", "lightning/
 fuzztarget = ["rand_chacha"]
 parallel = ["dlc-trie/parallel"]
 use-serde = ["serde", "dlc/use-serde", "dlc-messages/use-serde", "dlc-trie/use-serde"]
+async = ["dep:futures"]
 
 [dependencies]
 async-trait = "0.1.50"
 bitcoin = { version = "0.32.2", default-features = false }
 dlc = { version = "0.6.0", default-features = false, path = "../dlc" }
 dlc-messages = { version = "0.6.0", default-features = false, path = "../dlc-messages" }
 dlc-trie = { version = "0.6.0", default-features = false, path = "../dlc-trie" }
+futures = { version = "0.3.30", optional = true }
 hex = { package = "hex-conservative", version = "0.1" }
 lightning = { version = "0.0.124", default-features = false, features = ["grind_signatures"] }
 log = "0.4.14"

Diff for: dlc-manager/src/lib.rs

@@ -230,9 +230,23 @@ pub trait Oracle {
     /// Returns the public key of the oracle.
     fn get_public_key(&self) -> XOnlyPublicKey;
     /// Returns the announcement for the event with the given id if found.
+    #[cfg(not(feature = "async"))]
     fn get_announcement(&self, event_id: &str) -> Result<OracleAnnouncement, Error>;
     /// Returns the attestation for the event with the given id if found.
+    #[cfg(not(feature = "async"))]
     fn get_attestation(&self, event_id: &str) -> Result<OracleAttestation, Error>;
+    /// Returns the announcement for the event with the given id if found.
+    #[cfg(feature = "async")]
+    fn get_announcement(
+        &self,
+        event_id: &str,
+    ) -> impl std::future::Future<Output = Result<OracleAnnouncement, Error>> + Send;
+    /// Returns the attestation for the event with the given id if found.
+    #[cfg(feature = "async")]
+    fn get_attestation(
+        &self,
+        event_id: &str,
+    ) -> impl std::future::Future<Output = Result<OracleAttestation, Error>> + Send;
 }
 
 /// Represents a UTXO.