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GatewayJ
56 lines
1.8 KiB
Rust
56 lines
1.8 KiB
Rust
// Copyright 2024 RustFS Team
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use std::sync::Arc;
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use async_trait::async_trait;
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use crate::QueryResult;
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use super::{
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Query,
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execution::{Output, QueryStateMachine},
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logical_planner::Plan,
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session::QueryAdmission,
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};
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#[async_trait]
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pub trait QueryDispatcher: Send + Sync {
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// fn create_query_id(&self) -> QueryId;
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// fn query_info(&self, id: &QueryId);
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async fn execute_query(&self, query: &Query) -> QueryResult<Output>;
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fn try_reserve_query(&self) -> QueryResult<QueryAdmission> {
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Ok(QueryAdmission::unmanaged())
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}
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async fn execute_query_admitted(&self, query: &Query, _admission: QueryAdmission) -> QueryResult<Output> {
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self.execute_query(query).await
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}
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async fn build_logical_plan(&self, query_state_machine: Arc<QueryStateMachine>) -> QueryResult<Option<Plan>>;
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async fn execute_logical_plan(&self, logical_plan: Plan, query_state_machine: Arc<QueryStateMachine>) -> QueryResult<Output>;
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async fn build_query_state_machine(&self, query: Query) -> QueryResult<Arc<QueryStateMachine>>;
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// fn running_query_infos(&self) -> Vec<QueryInfo>;
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// fn running_query_status(&self) -> Vec<QueryStatus>;
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// fn cancel_query(&self, id: &QueryId);
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}
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