Stop the ServiceRunner if it is not used

crates/fuel-core/src/graphql_api/ports.rs

@@ -1,6 +1,6 @@
 use crate::state::IterDirection;
-use anyhow::Result;
 use async_trait::async_trait;
+use fuel_core_services::stream::BoxStream;
 use fuel_core_storage::{
     iter::BoxedIter,
     tables::{
@@ -19,6 +19,7 @@ use fuel_core_storage::{
     Result as StorageResult,
     StorageInspect,
 };
+use fuel_core_txpool::service::TxUpdate;
 use fuel_core_types::{
     blockchain::primitives::{
         BlockHeight,
@@ -145,14 +146,15 @@ pub trait DatabaseChain {
 
     fn base_chain_height(&self) -> StorageResult<DaBlockHeight>;
 }
+
 pub trait TxPoolPort: Send + Sync {
     fn find_one(&self, id: TxId) -> Option<TxInfo>;
+
     fn insert(&self, txs: Vec<Arc<Transaction>>) -> Vec<anyhow::Result<InsertionResult>>;
+
     fn tx_update_subscribe(
         &self,
-    ) -> fuel_core_services::stream::BoxStream<
-        Result<fuel_core_txpool::service::TxUpdate, BroadcastStreamRecvError>,
-    >;
+    ) -> BoxStream<Result<TxUpdate, BroadcastStreamRecvError>>;
 }
 
 #[async_trait]
@@ -162,7 +164,7 @@ pub trait DryRunExecution {
         transaction: Transaction,
         height: Option<BlockHeight>,
         utxo_validation: Option<bool>,
-    ) -> Result<Vec<Receipt>>;
+    ) -> anyhow::Result<Vec<Receipt>>;
 }
 
 pub trait BlockProducerPort: Send + Sync + DryRunExecution {}

crates/fuel-core/src/service/adapters.rs

@@ -19,7 +19,7 @@ pub mod txpool;
 
 #[derive(Clone)]
 pub struct PoAAdapter {
-    shared_state: fuel_core_poa::service::SharedState,
+    shared_state: Option<fuel_core_poa::service::SharedState>,
 }
 
 #[derive(Clone)]

crates/fuel-core/src/service/adapters/consensus_module/poa.rs

@@ -8,6 +8,7 @@ use crate::{
         TxPoolAdapter,
     },
 };
+use anyhow::anyhow;
 use fuel_core_poa::{
     ports::{
         BlockImporter,
@@ -37,7 +38,7 @@ use fuel_core_types::{
 };
 
 impl PoAAdapter {
-    pub fn new(shared_state: SharedState) -> Self {
+    pub fn new(shared_state: Option<SharedState>) -> Self {
         Self { shared_state }
     }
 }
@@ -48,7 +49,11 @@ impl ConsensusModulePort for PoAAdapter {
         &self,
         block_times: Vec<Option<Tai64>>,
     ) -> anyhow::Result<()> {
-        self.shared_state.manually_produce_block(block_times).await
+        self.shared_state
+            .as_ref()
+            .ok_or(anyhow!("The block production is disabled"))?
+            .manually_produce_block(block_times)
+            .await
     }
 }
 

crates/fuel-core/src/service/adapters/graphql_api.rs

@@ -15,11 +15,11 @@ use crate::{
         DryRunExecution,
         TxPoolPort,
     },
-    service::sub_services::TxPoolService,
+    service::adapters::TxPoolAdapter,
     state::IterDirection,
 };
-use anyhow::Result;
 use async_trait::async_trait;
+use fuel_core_services::stream::BoxStream;
 use fuel_core_storage::{
     iter::{
         BoxedIter,
@@ -29,9 +29,12 @@ use fuel_core_storage::{
     Error as StorageError,
     Result as StorageResult,
 };
-use fuel_core_txpool::types::{
-    ContractId,
-    TxId,
+use fuel_core_txpool::{
+    service::TxUpdate,
+    types::{
+        ContractId,
+        TxId,
+    },
 };
 use fuel_core_types::{
     blockchain::primitives::{
@@ -198,21 +201,19 @@ impl DatabaseChain for Database {
 
 impl DatabasePort for Database {}
 
-impl TxPoolPort for TxPoolService {
+impl TxPoolPort for TxPoolAdapter {
     fn insert(&self, txs: Vec<Arc<Transaction>>) -> Vec<anyhow::Result<InsertionResult>> {
-        self.shared.insert(txs)
+        self.service.insert(txs)
     }
 
     fn tx_update_subscribe(
         &self,
-    ) -> fuel_core_services::stream::BoxStream<
-        Result<fuel_core_txpool::service::TxUpdate, BroadcastStreamRecvError>,
-    > {
-        Box::pin(BroadcastStream::new(self.shared.tx_update_subscribe()))
+    ) -> BoxStream<Result<TxUpdate, BroadcastStreamRecvError>> {
+        Box::pin(BroadcastStream::new(self.service.tx_update_subscribe()))
     }
 
     fn find_one(&self, id: TxId) -> Option<fuel_core_types::services::txpool::TxInfo> {
-        self.shared.find_one(id)
+        self.service.find_one(id)
     }
 }
 
@@ -223,7 +224,7 @@ impl DryRunExecution for BlockProducerAdapter {
         transaction: Transaction,
         height: Option<BlockHeight>,
         utxo_validation: Option<bool>,
-    ) -> Result<Vec<TxReceipt>> {
+    ) -> anyhow::Result<Vec<TxReceipt>> {
         self.block_producer
             .dry_run(transaction, height, utxo_validation)
             .await

crates/fuel-core/src/service/sub_services.rs

@@ -118,14 +118,16 @@ pub fn init_sub_services(
     let poa_config: fuel_core_poa::Config = config.try_into()?;
     let production_enabled =
         !matches!(poa_config.trigger, Trigger::Never) || config.manual_blocks_enabled;
-    let poa = fuel_core_poa::new_service(
-        last_height,
-        poa_config,
-        tx_pool_adapter,
-        producer_adapter.clone(),
-        importer_adapter.clone(),
-    );
-    let poa_adapter = PoAAdapter::new(poa.shared.clone());
+    let poa = (production_enabled).then(|| {
+        fuel_core_poa::new_service(
+            last_height,
+            poa_config,
+            tx_pool_adapter.clone(),
+            producer_adapter.clone(),
+            importer_adapter.clone(),
+        )
+    });
+    let poa_adapter = PoAAdapter::new(poa.as_ref().map(|service| service.shared.clone()));
 
     #[cfg(feature = "p2p")]
     let sync = (!production_enabled)
@@ -164,7 +166,7 @@ pub fn init_sub_services(
         gql_database,
         schema,
         Box::new(producer_adapter),
-        Box::new(txpool.clone()),
+        Box::new(tx_pool_adapter),
         Box::new(poa_adapter),
     )?;
 
@@ -188,7 +190,7 @@ pub fn init_sub_services(
         Box::new(txpool),
     ];
 
-    if production_enabled {
+    if let Some(poa) = poa {
         services.push(Box::new(poa));
     }
 

crates/services/src/service.rs

@@ -101,22 +101,19 @@ pub trait RunnableTask: Send {
 #[derive(Debug)]
 pub struct ServiceRunner<S>
 where
-    S: RunnableService,
+    S: RunnableService + 'static,
 {
     /// The shared state of the service
     pub shared: S::SharedData,
     state: Shared<watch::Sender<State>>,
 }
 
-impl<S> Clone for ServiceRunner<S>
+impl<S> Drop for ServiceRunner<S>
 where
-    S: RunnableService,
+    S: RunnableService + 'static,
 {
-    fn clone(&self) -> Self {
-        Self {
-            shared: self.shared.clone(),
-            state: self.state.clone(),
-        }
+    fn drop(&mut self) {
+        self.stop();
     }
 }
 
@@ -454,4 +451,19 @@ mod tests {
         let state = service.stop_and_await().await.unwrap();
         assert!(state.stopped());
     }
+
+    #[tokio::test]
+    async fn stop_unused_service() {
+        let mut receiver;
+        {
+            let service = ServiceRunner::new(MockService::new_empty());
+            service.start().unwrap();
+            receiver = service.state.subscribe();
+        }
+
+        receiver.changed().await.unwrap();
+        assert!(matches!(receiver.borrow().clone(), State::Stopping));
+        receiver.changed().await.unwrap();
+        assert!(receiver.borrow().stopped());
+    }
 }

tests/tests/contract.rs

@@ -28,7 +28,11 @@ async fn test_contract_salt() {
     let (_, contract_id) = test_builder.setup_contract(vec![], None);
 
     // spin up node
-    let TestContext { client, .. } = test_builder.finalize().await;
+    let TestContext {
+        client,
+        srv: _dont_drop,
+        ..
+    } = test_builder.finalize().await;
 
     let contract = client
         .contract(format!("{contract_id:#x}").as_str())
@@ -52,7 +56,11 @@ async fn test_contract_balance(
         test_builder.setup_contract(vec![], Some(vec![(asset, test_balance)]));
 
     // spin up node
-    let TestContext { client, .. } = test_builder.finalize().await;
+    let TestContext {
+        client,
+        srv: _dont_drop,
+        ..
+    } = test_builder.finalize().await;
 
     let balance = client
         .contract_balance(
@@ -85,7 +93,11 @@ async fn test_5_contract_balances(
         ]),
     );
 
-    let TestContext { client, .. } = test_builder.finalize().await;
+    let TestContext {
+        client,
+        srv: _dont_drop,
+        ..
+    } = test_builder.finalize().await;
 
     let contract_balances = client
         .contract_balances(

tests/tests/helpers.rs

@@ -25,6 +25,7 @@ use std::collections::HashMap;
 
 /// Helper for wrapping a currently running node environment
 pub struct TestContext {
+    pub srv: FuelService,
     pub rng: StdRng,
     pub client: FuelClient,
 }
@@ -34,7 +35,7 @@ impl TestContext {
         let rng = StdRng::seed_from_u64(seed);
         let srv = FuelService::new_node(Config::local_node()).await.unwrap();
         let client = FuelClient::from(srv.bound_address);
-        Self { rng, client }
+        Self { srv, rng, client }
     }
 }
 
@@ -149,6 +150,7 @@ impl TestSetupBuilder {
         let client = FuelClient::from(srv.bound_address);
 
         TestContext {
+            srv,
             rng: self.rng.clone(),
             client,
         }