-
Notifications
You must be signed in to change notification settings - Fork 751
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
16 changed files
with
320 additions
and
2 deletions.
There are no files selected for viewing
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
16 changes: 16 additions & 0 deletions
16
src/query/service/src/table_functions/show_variables/mod.rs
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| // Copyright 2021 Datafuse Labs | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| mod show_variables_table; | ||
| pub use show_variables_table::ShowVariables; |
198 changes: 198 additions & 0 deletions
198
src/query/service/src/table_functions/show_variables/show_variables_table.rs
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| // Copyright 2021 Datafuse Labs | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| use std::any::Any; | ||
| use std::sync::Arc; | ||
|
|
||
| use databend_common_pipeline_sources::AsyncSource; | ||
| use databend_common_catalog::plan::DataSourcePlan; | ||
| use databend_common_catalog::plan::PartStatistics; | ||
| use databend_common_catalog::plan::Partitions; | ||
| use databend_common_catalog::plan::PushDownInfo; | ||
| use databend_common_catalog::table::Table; | ||
| use databend_common_catalog::table_args::TableArgs; | ||
| use databend_common_catalog::table_context::TableContext; | ||
| use databend_common_catalog::table_function::TableFunction; | ||
| use databend_common_exception::Result; | ||
| use databend_common_expression::types::StringType; | ||
| use databend_common_expression::DataBlock; | ||
| use databend_common_expression::FromData; | ||
| use databend_common_expression::TableDataType; | ||
| use databend_common_expression::TableField; | ||
| use databend_common_expression::TableSchema; | ||
| use databend_common_expression::TableSchemaRefExt; | ||
| use databend_common_meta_app::schema::TableIdent; | ||
| use databend_common_meta_app::schema::TableInfo; | ||
| use databend_common_meta_app::schema::TableMeta; | ||
| use databend_common_pipeline_core::processors::OutputPort; | ||
| use databend_common_pipeline_core::processors::ProcessorPtr; | ||
| use databend_common_pipeline_core::Pipeline; | ||
| use databend_common_pipeline_sources::AsyncSourcer; | ||
| use databend_common_sql::validate_function_arg; | ||
|
|
||
| const SHOW_VARIABLES: &str = "show_variables"; | ||
|
|
||
| pub struct ShowVariables { | ||
| table_info: TableInfo, | ||
| } | ||
|
|
||
| // show variables | ||
| impl ShowVariables { | ||
| pub fn create( | ||
| database_name: &str, | ||
| table_func_name: &str, | ||
| table_id: u64, | ||
| table_args: TableArgs, | ||
| ) -> Result<Arc<dyn TableFunction>> { | ||
| let args = table_args.positioned; | ||
| // Check args len. | ||
| validate_function_arg(table_func_name, args.len(), None, 0)?; | ||
|
|
||
| let table_info = TableInfo { | ||
| ident: TableIdent::new(table_id, 0), | ||
| desc: format!("'{}'.'{}'", database_name, table_func_name), | ||
| name: table_func_name.to_string(), | ||
| meta: TableMeta { | ||
| schema: Self::schema(), | ||
| engine: SHOW_VARIABLES.to_owned(), | ||
| ..Default::default() | ||
| }, | ||
| ..Default::default() | ||
| }; | ||
|
|
||
| Ok(Arc::new(Self { | ||
| table_info, | ||
| })) | ||
| } | ||
|
|
||
| fn schema() -> Arc<TableSchema> { | ||
| TableSchemaRefExt::create(vec![ | ||
| TableField::new("name", TableDataType::String), | ||
| TableField::new("value", TableDataType::String), | ||
| TableField::new("type", TableDataType::String), | ||
| ]) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl Table for ShowVariables { | ||
| fn as_any(&self) -> &dyn Any { | ||
| self | ||
| } | ||
|
|
||
| fn get_table_info(&self) -> &TableInfo { | ||
| &self.table_info | ||
| } | ||
|
|
||
| #[async_backtrace::framed] | ||
| async fn read_partitions( | ||
| &self, | ||
| _ctx: Arc<dyn TableContext>, | ||
| _push_downs: Option<PushDownInfo>, | ||
| _dry_run: bool, | ||
| ) -> Result<(PartStatistics, Partitions)> { | ||
| Ok((PartStatistics::default(), Partitions::default())) | ||
| } | ||
|
|
||
| fn table_args(&self) -> Option<TableArgs> { | ||
| Some(TableArgs::new_positioned(vec![])) | ||
| } | ||
|
|
||
| fn read_data( | ||
| &self, | ||
| ctx: Arc<dyn TableContext>, | ||
| _plan: &DataSourcePlan, | ||
| pipeline: &mut Pipeline, | ||
| _put_cache: bool, | ||
| ) -> Result<()> { | ||
| pipeline.add_source( | ||
| |output| { | ||
| ShowVariablesSource::create( | ||
| ctx.clone(), | ||
| output, | ||
| ) | ||
| }, | ||
| 1, | ||
| )?; | ||
|
|
||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| struct ShowVariablesSource { | ||
| ctx: Arc<dyn TableContext>, | ||
| finished: bool, | ||
| } | ||
|
|
||
| impl ShowVariablesSource { | ||
| pub fn create( | ||
| ctx: Arc<dyn TableContext>, | ||
| output: Arc<OutputPort>, | ||
| ) -> Result<ProcessorPtr> { | ||
| AsyncSourcer::create(ctx.clone(), output, ShowVariablesSource { | ||
| ctx, | ||
| finished: false, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl AsyncSource for ShowVariablesSource { | ||
| const NAME: &'static str = "show_variables"; | ||
|
|
||
| #[async_backtrace::framed] | ||
| async fn generate(&mut self) -> Result<Option<DataBlock>> { | ||
| if self.finished { | ||
| return Ok(None); | ||
| } | ||
|
|
||
| let res = show_variables(self.ctx.clone()).await?; | ||
|
|
||
| // Mark done. | ||
| self.finished = true; | ||
| Ok(res) | ||
| } | ||
| } | ||
|
|
||
| async fn show_variables( | ||
| ctx: Arc<dyn TableContext>, | ||
| ) -> Result<Option<DataBlock>> { | ||
| let var = ctx.get_all_variables(); | ||
|
|
||
| let mut names = vec![]; | ||
| let mut vars = vec![]; | ||
| let mut types = vec![]; | ||
| for (name, var) in var { | ||
| names.push(name.to_string()); | ||
| vars.push(var.to_string()); | ||
| types.push(var.as_ref().infer_data_type().to_string()); | ||
| } | ||
|
|
||
| Ok(Some(DataBlock::new_from_columns(vec![ | ||
| StringType::from_data(names), | ||
| StringType::from_data(vars), | ||
| StringType::from_data(types), | ||
| ]))) | ||
| } | ||
|
|
||
| impl TableFunction for ShowVariables { | ||
| fn function_name(&self) -> &str { | ||
| self.name() | ||
| } | ||
|
|
||
| fn as_table<'a>(self: Arc<Self>) -> Arc<dyn Table + 'a> | ||
| where Self: 'a { | ||
| self | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.