feat(committor): enforce per-account commit limit via MagicSys syscall

magicblock-accounts/Cargo.toml

@@ -16,6 +16,7 @@ magicblock-accounts-db = { workspace = true }
 magicblock-chainlink = { workspace = true }
 magicblock-committor-service = { workspace = true }
 magicblock-core = { workspace = true }
+magicblock-metrics = { workspace = true }
 magicblock-program = { workspace = true }
 solana-hash = { workspace = true }
 solana-pubkey = { workspace = true }

magicblock-accounts/src/scheduled_commits_processor.rs

@@ -19,6 +19,7 @@ use magicblock_committor_service::{
     intent_executor::ExecutionOutput, BaseIntentCommittor, CommittorService,
 };
 use magicblock_core::link::transactions::TransactionSchedulerHandle;
+use magicblock_metrics::metrics;
 use magicblock_program::{
     magic_scheduled_base_intent::ScheduledIntentBundle,
     register_scheduled_commit_sent, SentCommit, TransactionScheduler,
@@ -275,6 +276,7 @@ impl ScheduledCommitsProcessor for ScheduledCommitsProcessorImpl {
         if intent_bundles.is_empty() {
             return Ok(());
         }
+        metrics::inc_committor_intents_count_by(intent_bundles.len() as u64);
 
         // Add metas for intent we schedule
         let pubkeys_being_undelegated = {

magicblock-api/Cargo.toml

@@ -11,6 +11,7 @@ edition.workspace = true
 anyhow = { workspace = true }
 borsh = "1.5.3"
 fd-lock = { workspace = true }
+futures = { workspace = true }
 tracing = { workspace = true }
 
 magic-domain-program = { workspace = true }

magicblock-api/src/lib.rs

@@ -3,6 +3,7 @@ pub mod errors;
 mod fund_account;
 mod genesis_utils;
 pub mod ledger;
+mod magic_sys_adapter;
 pub mod magic_validator;
 mod slot;
 mod tickers;

magicblock-api/src/magic_sys_adapter.rs

@@ -0,0 +1,86 @@
+use std::{collections::HashMap, error::Error, sync::Arc};
+
+use magicblock_committor_service::{BaseIntentCommittor, CommittorService};
+use magicblock_core::{intent::CommittedAccount, traits::MagicSys};
+use magicblock_ledger::Ledger;
+use solana_instruction::error::InstructionError;
+use solana_pubkey::Pubkey;
+use tracing::{enabled, error, trace, Level};
+
+#[derive(Clone)]
+pub struct MagicSysAdapter {
+    ledger: Arc<Ledger>,
+    committor_service: Option<Arc<CommittorService>>,
+}
+
+impl MagicSysAdapter {
+    const RECV_ERR: u32 = 0xE000_0000;
+    const FETCH_ERR: u32 = 0xE001_0000;
+    const NO_COMMITTOR_ERR: u32 = 0xE002_0000;
+
+    pub fn new(
+        ledger: Arc<Ledger>,
+        committor_service: Option<Arc<CommittorService>>,
+    ) -> Self {
+        Self {
+            ledger,
+            committor_service,
+        }
+    }
+}
+
+impl MagicSys for MagicSysAdapter {
+    fn persist(&self, id: u64, data: Vec<u8>) -> Result<(), Box<dyn Error>> {
+        trace!(id, data_len = data.len(), "Persisting data");
+        self.ledger.write_account_mod_data(id, &data.into())?;
+        Ok(())
+    }
+
+    fn load(&self, id: u64) -> Result<Option<Vec<u8>>, Box<dyn Error>> {
+        let data = self.ledger.read_account_mod_data(id)?.map(|x| x.data);
+        if enabled!(Level::TRACE) {
+            if let Some(data) = &data {
+                trace!(id, data_len = data.len(), "Loading data");
+            } else {
+                trace!(id, found = false, "Loading data");
+            }
+        }
+        Ok(data)
+    }
+
+    fn fetch_current_commit_nonces(
+        &self,
+        commits: &[CommittedAccount],
+    ) -> Result<HashMap<Pubkey, u64>, InstructionError> {
+        let committor_service =
+            if let Some(committor_service) = &self.committor_service {
+                Ok(committor_service)
+            } else {
+                Err(InstructionError::Custom(Self::NO_COMMITTOR_ERR))
+            }?;
+
+        let min_context_slot = commits
+            .iter()
+            .map(|account| account.remote_slot)
+            .max()
+            .unwrap_or(0);
+        let pubkeys: Vec<_> =
+            commits.iter().map(|account| account.pubkey).collect();
+
+        let receiver = committor_service
+            .fetch_current_commit_nonces(&pubkeys, min_context_slot);
+        // Tx execution is sync and runs on a tokio worker thread. handle.block_on
+        // would panic (nested runtime). futures::executor::block_on parks this
+        // thread independently of tokio — safe because the thread is already
+        // committed to this tx until execution completes.
+        futures::executor::block_on(receiver)
+            .inspect_err(|err| {
+                error!(error = ?err, "Failed to receive nonces from CommittorService")
+            })
+            .map_err(|_| InstructionError::Custom(Self::RECV_ERR))?
+            .inspect_err(|err| {
+                error!(error = ?err, "Failed to fetch current commit nonces")
+            })
+            .map_err(|_| InstructionError::Custom(Self::FETCH_ERR))
+    }
+}

magicblock-api/src/magic_validator.rs

@@ -57,7 +57,7 @@ use magicblock_processor::{
     scheduler::{state::TransactionSchedulerState, TransactionScheduler},
 };
 use magicblock_program::{
-    init_persister,
+    init_magic_sys,
     validator::{self, validator_authority},
     TransactionScheduler as ActionTransactionScheduler,
 };
@@ -91,6 +91,7 @@ use crate::{
         self, read_validator_keypair_from_ledger, validator_keypair_path,
         write_validator_keypair_to_ledger,
     },
+    magic_sys_adapter::MagicSysAdapter,
     slot::advance_slot_and_update_ledger,
     tickers::{init_slot_ticker, init_system_metrics_ticker},
 };
@@ -209,6 +210,11 @@ impl MagicValidator {
         let step_start = Instant::now();
         let committor_service = Self::init_committor_service(&config).await?;
         log_timing("startup", "committor_service_init", step_start);
+        init_magic_sys(Arc::new(MagicSysAdapter::new(
+            ledger.clone(),
+            committor_service.clone(),
+        )));
+
         let step_start = Instant::now();
         let chainlink = Arc::new(
             Self::init_chainlink(
@@ -474,7 +480,6 @@ impl MagicValidator {
     ) -> ApiResult<(Arc<Ledger>, Slot)> {
         let (ledger, last_slot) = ledger::init(storage, ledger_config)?;
         let ledger_shared = Arc::new(ledger);
-        init_persister(ledger_shared.clone());
         Ok((ledger_shared, last_slot))
     }
 

magicblock-committor-service/Cargo.toml

@@ -22,6 +22,7 @@ lru = { workspace = true }
 magicblock-committor-program = { workspace = true, features = [
   "no-entrypoint",
 ] }
+magicblock-core = { workspace = true }
 magicblock-delegation-program = { workspace = true, features = [
   "no-entrypoint",
 ] }
@@ -56,6 +57,7 @@ tokio-util = { workspace = true }
 
 [dev-dependencies]
 solana-signature = { workspace = true, features = ["rand"] }
+serde_json = { workspace = true }
 lazy_static = { workspace = true }
 rand = { workspace = true }
 tempfile = { workspace = true }

magicblock-committor-service/src/committor_processor.rs

@@ -1,4 +1,8 @@
-use std::{collections::HashSet, path::Path, sync::Arc};
+use std::{
+    collections::{HashMap, HashSet},
+    path::Path,
+    sync::Arc,
+};
 
 use magicblock_program::magic_scheduled_base_intent::ScheduledIntentBundle;
 use magicblock_rpc_client::MagicblockRpcClient;
@@ -16,6 +20,9 @@ use crate::{
     intent_execution_manager::{
         db::DummyDB, BroadcastedIntentExecutionResult, IntentExecutionManager,
     },
+    intent_executor::task_info_fetcher::{
+        CacheTaskInfoFetcher, TaskInfoFetcher, TaskInfoFetcherResult,
+    },
     persist::{
         CommitStatusRow, IntentPersister, IntentPersisterImpl,
         MessageSignatures,
@@ -28,6 +35,7 @@ pub(crate) struct CommittorProcessor {
     pub(crate) authority: Keypair,
     persister: IntentPersisterImpl,
     commits_scheduler: IntentExecutionManager<DummyDB>,
+    task_info_fetcher: Arc<CacheTaskInfoFetcher>,
 }
 
 impl CommittorProcessor {
@@ -58,9 +66,12 @@ impl CommittorProcessor {
         let persister = IntentPersisterImpl::try_new(persist_file)?;
 
         // Create commit scheduler
+        let task_info_fetcher =
+            Arc::new(CacheTaskInfoFetcher::new(magic_block_rpc_client.clone()));
         let commits_scheduler = IntentExecutionManager::new(
             magic_block_rpc_client.clone(),
             DummyDB::new(),
+            task_info_fetcher.clone(),
             Some(persister.clone()),
             table_mania.clone(),
             chain_config.compute_budget_config.clone(),
@@ -72,6 +83,7 @@ impl CommittorProcessor {
             table_mania,
             commits_scheduler,
             persister,
+            task_info_fetcher,
         })
     }
 
@@ -149,4 +161,15 @@ impl CommittorProcessor {
     ) -> broadcast::Receiver<BroadcastedIntentExecutionResult> {
         self.commits_scheduler.subscribe_for_results()
     }
+
+    /// Fetches current commit nonces
+    pub async fn fetch_current_commit_nonces(
+        &self,
+        pubkeys: &[Pubkey],
+        min_context_slot: u64,
+    ) -> TaskInfoFetcherResult<HashMap<Pubkey, u64>> {
+        self.task_info_fetcher
+            .fetch_current_commit_nonces(pubkeys, min_context_slot)
+            .await
+    }
 }

magicblock-committor-service/src/error.rs

@@ -3,7 +3,10 @@ use solana_signature::Signature;
 use solana_transaction_error::TransactionError;
 use thiserror::Error;
 
-use crate::intent_execution_manager::IntentExecutionManagerError;
+use crate::{
+    intent_execution_manager::IntentExecutionManagerError,
+    intent_executor::task_info_fetcher::TaskInfoFetcherError,
+};
 
 pub type CommittorServiceResult<T, E = CommittorServiceError> = Result<T, E>;
 
@@ -26,6 +29,9 @@ pub enum CommittorServiceError {
     #[error("IntentExecutionManagerError: {0} ({0:?})")]
     IntentExecutionManagerError(#[from] IntentExecutionManagerError),
 
+    #[error("TaskInfoFetcherError: {0} ({0:?})")]
+    TaskInfoFetcherError(#[from] TaskInfoFetcherError),
+
     #[error(
         "Failed send and confirm transaction to {0} on chain: {1} ({1:?})"
     )]

magicblock-committor-service/src/intent_execution_manager.rs

@@ -33,19 +33,18 @@ impl<D: DB> IntentExecutionManager<D> {
     pub fn new<P: IntentPersister>(
         rpc_client: MagicblockRpcClient,
         db: D,
+        task_info_fetcher: Arc<CacheTaskInfoFetcher>,
         intent_persister: Option<P>,
         table_mania: TableMania,
         compute_budget_config: ComputeBudgetConfig,
     ) -> Self {
         let db = Arc::new(db);
 
-        let commit_id_tracker =
-            Arc::new(CacheTaskInfoFetcher::new(rpc_client.clone()));
         let executor_factory = IntentExecutorFactoryImpl {
             rpc_client,
             table_mania,
             compute_budget_config,
-            commit_id_tracker,
+            task_info_fetcher,
         };
 
         let (sender, receiver) = mpsc::channel(1000);

magicblock-committor-service/src/intent_execution_manager/intent_scheduler.rs

@@ -637,7 +637,7 @@ mod edge_cases_test {
 
 #[cfg(test)]
 mod complete_error_test {
-    use magicblock_program::magic_scheduled_base_intent::CommittedAccount;
+    use magicblock_core::intent::CommittedAccount;
     use solana_account::Account;
     use solana_pubkey::pubkey;
 
@@ -854,8 +854,9 @@ pub(crate) fn create_test_intent(
     pubkeys: &[Pubkey],
     is_undelegate: bool,
 ) -> ScheduledIntentBundle {
+    use magicblock_core::intent::CommittedAccount;
     use magicblock_program::magic_scheduled_base_intent::{
-        CommitAndUndelegate, CommitType, CommittedAccount, MagicIntentBundle,
+        CommitAndUndelegate, CommitType, MagicIntentBundle,
         ScheduledIntentBundle, UndelegateType,
     };
     use solana_account::Account;
@@ -903,8 +904,9 @@ pub(crate) fn create_test_intent_bundle(
     commit_pubkeys: &[Pubkey],
     commit_and_undelegate_pubkeys: &[Pubkey],
 ) -> ScheduledIntentBundle {
+    use magicblock_core::intent::CommittedAccount;
     use magicblock_program::magic_scheduled_base_intent::{
-        CommitAndUndelegate, CommitType, CommittedAccount, MagicIntentBundle,
+        CommitAndUndelegate, CommitType, MagicIntentBundle,
         ScheduledIntentBundle, UndelegateType,
     };
     use solana_account::Account;

magicblock-committor-service/src/intent_executor/intent_executor_factory.rs

@@ -23,7 +23,7 @@ pub struct IntentExecutorFactoryImpl {
     pub rpc_client: MagicblockRpcClient,
     pub table_mania: TableMania,
     pub compute_budget_config: ComputeBudgetConfig,
-    pub commit_id_tracker: Arc<CacheTaskInfoFetcher>,
+    pub task_info_fetcher: Arc<CacheTaskInfoFetcher>,
 }
 
 impl IntentExecutorFactory for IntentExecutorFactoryImpl {
@@ -39,7 +39,7 @@ impl IntentExecutorFactory for IntentExecutorFactoryImpl {
         IntentExecutorImpl::<TransactionPreparatorImpl, CacheTaskInfoFetcher>::new(
             self.rpc_client.clone(),
             transaction_preparator,
-            self.commit_id_tracker.clone(),
+            self.task_info_fetcher.clone(),
         )
     }
 }

magicblock-committor-service/src/intent_executor/mod.rs

@@ -338,7 +338,7 @@ where
             .reset(ResetType::Specific(committed_pubkeys));
         let commit_ids = self
             .task_info_fetcher
-            .fetch_next_commit_ids(committed_pubkeys, min_context_slot)
+            .fetch_next_commit_nonces(committed_pubkeys, min_context_slot)
             .await
             .map_err(TaskBuilderError::CommitTasksBuildError)?;