InformationExtension

catalog::system_schema::information_schema

Trait InformationExtension 

Source 
pub trait InformationExtension {
    type Error: ErrorExt;

    // Required methods
    fn nodes<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<NodeInfo>, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn procedures<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<(String, ProcedureInfo)>, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn region_stats<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<RegionStat>, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn flow_stats<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Option<FlowStat>, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn inspect_datanode<'life0, 'async_trait>(
        &'life0 self,
        request: DatanodeInspectRequest,
    ) -> Pin<Box<dyn Future<Output = Result<SendableRecordBatchStream, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}
Expand description

The InformationExtension trait provides the extension methods for the information_schema tables.

Required Associated Types§

Source

type Error: ErrorExt

Required Methods§

Source

fn nodes<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<NodeInfo>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Gets the nodes information.

Source

fn procedures<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<(String, ProcedureInfo)>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Gets the procedures information.

Source

fn region_stats<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<RegionStat>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Gets the region statistics.

Source

fn flow_stats<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<FlowStat>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Get the flow statistics. If no flownode is available, return None.

Source

fn inspect_datanode<'life0, 'async_trait>( &'life0 self, request: DatanodeInspectRequest, ) -> Pin<Box<dyn Future<Output = Result<SendableRecordBatchStream, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Inspects the datanode.

Implementors§