fix: fix procedure loaders not found issue

src/common/meta/Cargo.toml

@@ -42,5 +42,6 @@ tonic.workspace = true
 
 [dev-dependencies]
 chrono.workspace = true
+common-procedure = { workspace = true, features = ["testing"] }
 datatypes.workspace = true
 hyper = { version = "0.14", features = ["full"] }

src/common/meta/src/ddl_manager.rs

@@ -43,9 +43,9 @@ use crate::rpc::ddl::{
     TruncateTableTask,
 };
 use crate::rpc::router::RegionRoute;
-
 pub type DdlManagerRef = Arc<DdlManager>;
 
+/// The [DdlManager] provides the ability to execute Ddl.
 pub struct DdlManager {
     procedure_manager: ProcedureManagerRef,
     datanode_manager: DatanodeManagerRef,
@@ -55,26 +55,31 @@ pub struct DdlManager {
 }
 
 impl DdlManager {
-    pub fn new(
+    /// Returns a new [DdlManager] with all Ddl [BoxedProcedureLoader](common_procedure::procedure::BoxedProcedureLoader)s registered.
+    pub fn try_new(
         procedure_manager: ProcedureManagerRef,
         datanode_clients: DatanodeManagerRef,
         cache_invalidator: CacheInvalidatorRef,
         table_metadata_manager: TableMetadataManagerRef,
         table_meta_allocator: TableMetadataAllocatorRef,
-    ) -> Self {
-        Self {
+    ) -> Result<Self> {
+        let manager = Self {
             procedure_manager,
             datanode_manager: datanode_clients,
             cache_invalidator,
             table_metadata_manager,
             table_meta_allocator,
-        }
+        };
+        manager.register_loaders()?;
+        Ok(manager)
     }
 
+    /// Returns the [TableMetadataManagerRef].
     pub fn table_metadata_manager(&self) -> &TableMetadataManagerRef {
         &self.table_metadata_manager
     }
 
+    /// Returns the [DdlContext]
     pub fn create_context(&self) -> DdlContext {
         DdlContext {
             datanode_manager: self.datanode_manager.clone(),
@@ -83,7 +88,7 @@ impl DdlManager {
         }
     }
 
-    pub fn try_start(&self) -> Result<()> {
+    fn register_loaders(&self) -> Result<()> {
         let context = self.create_context();
 
         self.procedure_manager
@@ -142,6 +147,7 @@ impl DdlManager {
     }
 
     #[tracing::instrument(skip_all)]
+    /// Submits and executes an alter table task.
     pub async fn submit_alter_table_task(
         &self,
         cluster_id: u64,
@@ -159,6 +165,7 @@ impl DdlManager {
     }
 
     #[tracing::instrument(skip_all)]
+    /// Submits and executes a create table task.
     pub async fn submit_create_table_task(
         &self,
         cluster_id: u64,
@@ -176,6 +183,7 @@ impl DdlManager {
     }
 
     #[tracing::instrument(skip_all)]
+    /// Submits and executes a drop table task.
     pub async fn submit_drop_table_task(
         &self,
         cluster_id: u64,
@@ -199,6 +207,7 @@ impl DdlManager {
     }
 
     #[tracing::instrument(skip_all)]
+    /// Submits and executes a truncate table task.
     pub async fn submit_truncate_table_task(
         &self,
         cluster_id: u64,
@@ -416,3 +425,80 @@ impl DdlTaskExecutor for DdlManager {
         .await
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::sync::Arc;
+
+    use api::v1::meta::Partition;
+    use common_procedure::local::LocalManager;
+    use table::metadata::{RawTableInfo, TableId};
+
+    use super::DdlManager;
+    use crate::cache_invalidator::DummyCacheInvalidator;
+    use crate::datanode_manager::{DatanodeManager, DatanodeRef};
+    use crate::ddl::alter_table::AlterTableProcedure;
+    use crate::ddl::create_table::CreateTableProcedure;
+    use crate::ddl::drop_table::DropTableProcedure;
+    use crate::ddl::truncate_table::TruncateTableProcedure;
+    use crate::ddl::{TableMetadataAllocator, TableMetadataAllocatorContext};
+    use crate::error::Result;
+    use crate::key::TableMetadataManager;
+    use crate::kv_backend::memory::MemoryKvBackend;
+    use crate::peer::Peer;
+    use crate::rpc::router::RegionRoute;
+    use crate::state_store::KvStateStore;
+
+    /// A dummy implemented [DatanodeManager].
+    pub struct DummyDatanodeManager;
+
+    #[async_trait::async_trait]
+    impl DatanodeManager for DummyDatanodeManager {
+        async fn datanode(&self, _datanode: &Peer) -> DatanodeRef {
+            unimplemented!()
+        }
+    }
+
+    /// A dummy implemented [TableMetadataAllocator].
+    pub struct DummyTableMetadataAllocator;
+
+    #[async_trait::async_trait]
+    impl TableMetadataAllocator for DummyTableMetadataAllocator {
+        async fn create(
+            &self,
+            _ctx: &TableMetadataAllocatorContext,
+            _table_info: &mut RawTableInfo,
+            _partitions: &[Partition],
+        ) -> Result<(TableId, Vec<RegionRoute>)> {
+            unimplemented!()
+        }
+    }
+
+    #[test]
+    fn test_try_new() {
+        let kv_backend = Arc::new(MemoryKvBackend::new());
+        let table_metadata_manager = Arc::new(TableMetadataManager::new(kv_backend.clone()));
+
+        let state_store = Arc::new(KvStateStore::new(kv_backend));
+        let procedure_manager = Arc::new(LocalManager::new(Default::default(), state_store));
+
+        let _ = DdlManager::try_new(
+            procedure_manager.clone(),
+            Arc::new(DummyDatanodeManager),
+            Arc::new(DummyCacheInvalidator),
+            table_metadata_manager,
+            Arc::new(DummyTableMetadataAllocator),
+        );
+
+        let expected_loaders = vec![
+            CreateTableProcedure::TYPE_NAME,
+            AlterTableProcedure::TYPE_NAME,
+            DropTableProcedure::TYPE_NAME,
+            TruncateTableProcedure::TYPE_NAME,
+        ];
+
+        for loader in expected_loaders {
+            assert!(procedure_manager.contains_loader(loader));
+        }
+    }
+}

src/common/procedure/Cargo.toml

@@ -4,6 +4,10 @@ version.workspace = true
 edition.workspace = true
 license.workspace = true
 
+
+[features]
+testing=[]
+
 [dependencies]
 async-stream.workspace = true
 async-trait.workspace = true

src/common/procedure/src/local.rs

@@ -527,6 +527,13 @@ impl LocalManager {
 
         Ok(())
     }
+
+    #[cfg(any(test, feature = "testing"))]
+    /// Returns true if contains a specified loader.
+    pub fn contains_loader(&self, name: &str) -> bool {
+        let loaders = self.manager_ctx.loaders.lock().unwrap();
+        loaders.contains_key(name)
+    }
 }
 
 #[async_trait]

src/frontend/src/error.rs

@@ -26,6 +26,12 @@ use store_api::storage::RegionNumber;
 #[snafu(visibility(pub))]
 #[stack_trace_debug]
 pub enum Error {
+    #[snafu(display("Failed to init ddl manager"))]
+    InitDdlManager {
+        location: Location,
+        source: common_meta::error::Error,
+    },
+
     #[snafu(display("Failed to invalidate table cache"))]
     InvalidateTableCache {
         location: Location,
@@ -319,7 +325,9 @@ impl ErrorExt for Error {
 
             Error::ParseSql { source, .. } => source.status_code(),
 
-            Error::InvalidateTableCache { source, .. } => source.status_code(),
+            Error::InvalidateTableCache { source, .. } | Error::InitDdlManager { source, .. } => {
+                source.status_code()
+            }
 
             Error::Table { source, .. }
             | Error::CopyTable { source, .. }

src/frontend/src/instance.rs

@@ -328,13 +328,16 @@ impl Instance {
         let table_metadata_manager = Arc::new(TableMetadataManager::new(kv_backend.clone()));
 
         let cache_invalidator = Arc::new(DummyCacheInvalidator);
-        let ddl_executor = Arc::new(DdlManager::new(
-            procedure_manager,
-            datanode_manager,
-            cache_invalidator.clone(),
-            table_metadata_manager.clone(),
-            Arc::new(StandaloneTableMetadataCreator::new(kv_backend.clone())),
-        ));
+        let ddl_executor = Arc::new(
+            DdlManager::try_new(
+                procedure_manager,
+                datanode_manager,
+                cache_invalidator.clone(),
+                table_metadata_manager.clone(),
+                Arc::new(StandaloneTableMetadataCreator::new(kv_backend.clone())),
+            )
+            .context(error::InitDdlManagerSnafu)?,
+        );
 
         let statement_executor = Arc::new(StatementExecutor::new(
             catalog_manager.clone(),

src/meta-srv/src/error.rs

@@ -43,6 +43,12 @@ pub enum Error {
         region_id: RegionId,
     },
 
+    #[snafu(display("Failed to init ddl manager"))]
+    InitDdlManager {
+        location: Location,
+        source: common_meta::error::Error,
+    },
+
     #[snafu(display("Failed to create default catalog and schema"))]
     InitMetadata {
         location: Location,
@@ -685,7 +691,9 @@ impl ErrorExt for Error {
             | Error::UpdateTableRoute { source, .. }
             | Error::GetFullTableInfo { source, .. } => source.status_code(),
 
-            Error::InitMetadata { source, .. } => source.status_code(),
+            Error::InitMetadata { source, .. } | Error::InitDdlManager { source, .. } => {
+                source.status_code()
+            }
 
             Error::Other { source, .. } => source.status_code(),
         }

src/meta-srv/src/metasrv/builder.rs

@@ -28,10 +28,11 @@ use common_meta::sequence::{Sequence, SequenceRef};
 use common_meta::state_store::KvStateStore;
 use common_procedure::local::{LocalManager, ManagerConfig};
 use common_procedure::ProcedureManagerRef;
+use snafu::ResultExt;
 
 use crate::cache_invalidator::MetasrvCacheInvalidator;
 use crate::cluster::{MetaPeerClientBuilder, MetaPeerClientRef};
-use crate::error::Result;
+use crate::error::{self, Result};
 use crate::greptimedb_telemetry::get_greptimedb_telemetry_task;
 use crate::handler::check_leader_handler::CheckLeaderHandler;
 use crate::handler::collect_stats_handler::CollectStatsHandler;
@@ -196,8 +197,7 @@ impl MetaSrvBuilder {
             &table_metadata_manager,
             (&selector, &selector_ctx),
             &table_id_sequence,
-        );
-        let _ = ddl_manager.try_start();
+        )?;
         let opening_region_keeper = Arc::new(OpeningRegionKeeper::default());
 
         let handler_group = match handler_group {
@@ -330,7 +330,7 @@ fn build_ddl_manager(
     table_metadata_manager: &TableMetadataManagerRef,
     (selector, selector_ctx): (&SelectorRef, &SelectorContext),
     table_id_sequence: &SequenceRef,
-) -> DdlManagerRef {
+) -> Result<DdlManagerRef> {
     let datanode_clients = datanode_clients.unwrap_or_else(|| {
         let datanode_client_channel_config = ChannelConfig::new()
             .timeout(Duration::from_millis(
@@ -355,12 +355,15 @@ fn build_ddl_manager(
         table_id_sequence.clone(),
     ));
 
-    Arc::new(DdlManager::new(
-        procedure_manager.clone(),
-        datanode_clients,
-        cache_invalidator,
-        table_metadata_manager.clone(),
-        table_meta_allocator,
+    Ok(Arc::new(
+        DdlManager::try_new(
+            procedure_manager.clone(),
+            datanode_clients,
+            cache_invalidator,
+            table_metadata_manager.clone(),
+            table_meta_allocator,
+        )
+        .context(error::InitDdlManagerSnafu)?,
     ))
 }
 

tests-integration/src/standalone.rs

@@ -99,17 +99,20 @@ impl GreptimeDbStandaloneBuilder {
             .init()
             .await
             .unwrap();
-        procedure_manager.start().await.unwrap();
+
         let instance = Instance::try_new_standalone(
             kv_backend,
-            procedure_manager,
+            procedure_manager.clone(),
             catalog_manager,
             plugins,
             datanode.region_server(),
         )
         .await
         .unwrap();
 
+        // Ensures all loaders are registered.
+        procedure_manager.start().await.unwrap();
+
         test_util::prepare_another_catalog_and_schema(&instance).await;
 
         instance.start().await.unwrap();