tmp1

Signed-off-by: junxiang Mu <1948535941@qq.com>

s3select/api/src/server/dbms.rs

@@ -0,0 +1,43 @@
+use async_trait::async_trait;
+
+use crate::{
+    query::{
+        execution::{Output, QueryStateMachineRef},
+        logical_planner::Plan,
+        Query,
+    },
+    QueryResult,
+};
+
+pub struct QueryHandle {
+    query: Query,
+    result: Output,
+}
+
+impl QueryHandle {
+    pub fn new(query: Query, result: Output) -> Self {
+        Self { query, result }
+    }
+
+    pub fn query(&self) -> &Query {
+        &self.query
+    }
+
+    pub fn result(self) -> Output {
+        self.result
+    }
+}
+
+#[async_trait]
+pub trait DatabaseManagerSystem {
+    async fn start(&self) -> QueryResult<()>;
+    async fn execute(&self, query: &Query) -> QueryResult<QueryHandle>;
+    async fn build_query_state_machine(&self, query: Query) -> QueryResult<QueryStateMachineRef>;
+    async fn build_logical_plan(&self, query_state_machine: QueryStateMachineRef) -> QueryResult<Option<Plan>>;
+    async fn execute_logical_plan(
+        &self,
+        logical_plan: Plan,
+        query_state_machine: QueryStateMachineRef,
+    ) -> QueryResult<QueryHandle>;
+    fn metrics(&self) -> String;
+}

s3select/api/src/server/mod.rs

@@ -0,0 +1 @@
+pub mod dbms;