Move in the stacks client into the signer context

signer/src/block_observer.rs

@@ -389,6 +389,7 @@ mod tests {
             Settings::new_from_default_config().unwrap(),
             storage.clone(),
             test_harness.clone(),
+            test_harness.clone(),
         );
         // There must be at least one signal receiver alive when the block observer
         // later tries to send a signal, hence this line.
@@ -495,6 +496,7 @@ mod tests {
             Settings::new_from_default_config().unwrap(),
             storage.clone(),
             test_harness.clone(),
+            test_harness.clone(),
         );
 
         let mut block_observer = BlockObserver {
@@ -572,6 +574,7 @@ mod tests {
             Settings::new_from_default_config().unwrap(),
             storage.clone(),
             test_harness.clone(),
+            test_harness.clone(),
         );
 
         let mut block_observer = BlockObserver {
@@ -640,6 +643,7 @@ mod tests {
             Settings::new_from_default_config().unwrap(),
             storage.clone(),
             test_harness.clone(),
+            test_harness.clone(),
         );
 
         // Now let's create two transactions, one spending to the signers

signer/src/context/mod.rs

@@ -9,6 +9,7 @@ use url::Url;
 use crate::bitcoin::BitcoinInteract;
 use crate::config::Settings;
 use crate::error::Error;
+use crate::stacks::api::StacksInteract;
 use crate::storage::DbRead;
 use crate::storage::DbWrite;
 pub use messaging::*;
@@ -33,12 +34,14 @@ pub trait Context: Clone + Sync + Send {
     fn get_storage_mut(&self) -> impl DbRead + DbWrite + Clone + Sync + Send;
     /// Get a handle to a Bitcoin client.
     fn get_bitcoin_client(&self) -> impl BitcoinInteract + Clone;
+    /// Get a handler to the Stacks client.
+    fn get_stacks_client(&self) -> impl StacksInteract + Clone;
 }
 
 /// Signer context which is passed to different components within the
 /// signer binary.
 #[derive(Debug, Clone)]
-pub struct SignerContext<S, BC> {
+pub struct SignerContext<S, BC, ST> {
     config: Settings,
     // Handle to the app signalling channel. This keeps the channel alive
     // for the duration of the program and is used both to send messages
@@ -55,36 +58,40 @@ pub struct SignerContext<S, BC> {
     // TODO: Additional clients to be added in future PRs. We may want
     // to break the clients out into a separate struct to keep the field
     // count down.
-    // /// Handle to a Stacks-RPC fallback-client.
-    //stacks_client: ApiFallbackClient<ST>,
+    /// Handle to a Stacks-RPC fallback-client.
+    stacks_client: ST,
     // /// Handle to a Emily-API fallback-client.
     //emily_client: ApiFallbackClient<EM>,
     // /// Handle to a Blocklist-API fallback-client.
     //blocklist_client: ApiFallbackClient<BL>,
 }
 
-impl<S, BC> SignerContext<S, BC>
+impl<S, BC, ST> SignerContext<S, BC, ST>
 where
     S: DbRead + DbWrite + Clone + Sync + Send,
     BC: for<'a> TryFrom<&'a [Url]> + BitcoinInteract + Clone + Sync + Send + 'static,
+    ST: for<'a> TryFrom<&'a Settings> + StacksInteract + Clone + Sync + Send + 'static,
     Error: for<'a> From<<BC as TryFrom<&'a [Url]>>::Error>,
+    Error: for<'a> From<<ST as TryFrom<&'a Settings>>::Error>,
 {
     /// Initializes a new [`SignerContext`], automatically creating clients
     /// based on the provided types.
     pub fn init(config: Settings, db: S) -> Result<Self, Error> {
         let bc = BC::try_from(&config.bitcoin.rpc_endpoints)?;
+        let st = ST::try_from(&config)?;
 
-        Ok(Self::new(config, db, bc))
+        Ok(Self::new(config, db, bc, st))
     }
 }
 
-impl<S, BC> SignerContext<S, BC>
+impl<S, BC, ST> SignerContext<S, BC, ST>
 where
     S: DbRead + DbWrite + Clone + Sync + Send,
     BC: BitcoinInteract + Clone + Sync + Send,
+    ST: StacksInteract + Clone + Sync + Send,
 {
     /// Create a new signer context.
-    pub fn new(config: Settings, db: S, bitcoin_client: BC) -> Self {
+    pub fn new(config: Settings, db: S, bitcoin_client: BC, stacks_client: ST) -> Self {
         // TODO: Decide on the channel capacity and how we should handle slow consumers.
         // NOTE: Ideally consumers which require processing time should pull the relevent
         // messages into a local VecDequeue and process them in their own time.
@@ -97,14 +104,16 @@ where
             term_tx,
             storage: db,
             bitcoin_client,
+            stacks_client,
         }
     }
 }
 
-impl<S, BC> Context for SignerContext<S, BC>
+impl<S, BC, ST> Context for SignerContext<S, BC, ST>
 where
     S: DbRead + DbWrite + Clone + Sync + Send,
     BC: BitcoinInteract + Clone + Sync + Send,
+    ST: StacksInteract + Clone + Sync + Send,
 {
     fn config(&self) -> &Settings {
         &self.config
@@ -147,6 +156,10 @@ where
     fn get_bitcoin_client(&self) -> impl BitcoinInteract + Clone {
         self.bitcoin_client.clone()
     }
+
+    fn get_stacks_client(&self) -> impl StacksInteract + Clone {
+        self.stacks_client.clone()
+    }
 }
 
 #[cfg(test)]

signer/src/main.rs

@@ -65,7 +65,11 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     }
 
     // Initialize the signer context.
-    let context = SignerContext::<_, ApiFallbackClient<BitcoinCoreClient>>::init(settings, db)?;
+    let context = SignerContext::<
+        _,
+        ApiFallbackClient<BitcoinCoreClient>,
+        ApiFallbackClient<StacksClient>,
+    >::init(settings, db)?;
 
     // Run the application components concurrently. We're `join!`ing them
     // here so that every component can shut itself down gracefully when

signer/src/testing/api_clients.rs

@@ -7,6 +7,7 @@ use crate::bitcoin::rpc::GetTxResponse;
 use crate::bitcoin::BitcoinInteract;
 use crate::bitcoin::MockBitcoinInteract;
 use crate::blocklist_client::BlocklistChecker;
+use crate::config::Settings;
 use crate::emily_client::EmilyInteract;
 use crate::error::Error;
 use crate::stacks::api::StacksInteract;
@@ -23,6 +24,13 @@ impl TryFrom<&[Url]> for NoopApiClient {
     }
 }
 
+impl TryFrom<&Settings> for NoopApiClient {
+    type Error = Error;
+    fn try_from(_value: &Settings) -> Result<Self, Self::Error> {
+        Ok(NoopApiClient)
+    }
+}
+
 /// Noop implementation of the BitcoinInteract trait.
 impl BitcoinInteract for NoopApiClient {
     async fn get_tx(&self, _: &bitcoin::Txid) -> Result<Option<GetTxResponse>, Error> {

signer/src/testing/context.rs

@@ -10,9 +10,12 @@ use crate::{
     config::Settings,
     context::{Context, SignerContext},
     error::Error,
+    stacks::api::StacksInteract,
     storage::in_memory::{SharedStore, Store},
 };
 
+use super::api_clients::NoopApiClient;
+
 /// A [`Context`] which can be used for testing.
 ///
 /// This context is opinionated and uses a shared in-memory store and mocked
@@ -24,7 +27,7 @@ use crate::{
 #[derive(Clone)]
 pub struct TestContext<BC> {
     /// The inner [`SignerContext`] which this context wraps.
-    pub inner: SignerContext<SharedStore, BC>,
+    pub inner: SignerContext<SharedStore, BC, NoopApiClient>,
 
     /// The mocked bitcoin client.
     pub bitcoin_client: BC,
@@ -39,7 +42,7 @@ where
         let settings = Settings::new_from_default_config().unwrap();
         let store = Store::new_shared();
 
-        let context = SignerContext::new(settings, store, bitcoin_client.clone());
+        let context = SignerContext::new(settings, store, bitcoin_client.clone(), NoopApiClient);
 
         Self { inner: context, bitcoin_client }
     }
@@ -102,6 +105,10 @@ where
     fn get_bitcoin_client(&self) -> impl BitcoinInteract + Clone {
         self.inner.get_bitcoin_client()
     }
+
+    fn get_stacks_client(&self) -> impl StacksInteract + Clone {
+        NoopApiClient
+    }
 }
 
 /// A wrapper around a mock which can be cloned and shared between threads.

signer/src/testing/mod.rs

@@ -29,7 +29,7 @@ use crate::storage::postgres::PgStore;
 pub const DEFAULT_CONFIG_PATH: Option<&str> = Some("./src/config/default");
 
 /// A [`SignerContext`] which uses [`NoopApiClient`]s.
-pub type NoopSignerContext<S> = SignerContext<S, NoopApiClient>;
+pub type NoopSignerContext<S> = SignerContext<S, NoopApiClient, NoopApiClient>;
 
 impl Settings {
     /// Create a new `Settings` instance from the default configuration file.
@@ -42,7 +42,7 @@ impl Settings {
 /// A client that can be used for integration tests. The settings are
 /// loaded from the default config toml, and the PgStore is assumed to
 /// point to a test database.
-pub type TestSignerContext = SignerContext<PgStore, BitcoinCoreClient>;
+pub type TestSignerContext = SignerContext<PgStore, BitcoinCoreClient, NoopApiClient>;
 
 impl TestSignerContext {
     /// Create a new one from the given database connection pool with the
@@ -52,7 +52,7 @@ impl TestSignerContext {
 
         let url = config.bitcoin.rpc_endpoints.first().unwrap();
         let bitcoin_client = BitcoinCoreClient::try_from(url).unwrap();
-        Self::new(config, db, bitcoin_client)
+        Self::new(config, db, bitcoin_client, NoopApiClient)
     }
 }