Documentation
¶
Index ¶
- func NewSampleDatasource(_ context.Context, settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error)
- type Datasource
- func (d *Datasource) CallResource(ctx context.Context, req *backend.CallResourceRequest, ...) error
- func (d *Datasource) CheckHealth(_ context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error)
- func (d *Datasource) Dispose()
- func (d *Datasource) ExecuteQuery(queryString string) (*sql.Rows, error)
- func (d *Datasource) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error)
- func (d *Datasource) RefreshDBConnection() error
- type DatasourceSettings
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NewSampleDatasource ¶
func NewSampleDatasource(_ context.Context, settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error)
NewSampleDatasource creates a new datasource instance.
Types ¶
type Datasource ¶ added in v1.2.0
type Datasource struct {
// contains filtered or unexported fields
}
Datasource is an example datasource which can respond to data queries, reports its health and has streaming skills.
func (*Datasource) CallResource ¶ added in v1.2.0
func (d *Datasource) CallResource(ctx context.Context, req *backend.CallResourceRequest, sender backend.CallResourceResponseSender) error
func (*Datasource) CheckHealth ¶ added in v1.2.0
func (d *Datasource) CheckHealth(_ context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error)
CheckHealth handles health checks sent from Grafana to the plugin. The main use case for these health checks is the test button on the datasource configuration page which allows users to verify that a datasource is working as expected.
func (*Datasource) Dispose ¶ added in v1.2.0
func (d *Datasource) Dispose()
Dispose here tells plugin SDK that plugin wants to clean up resources when a new instance created. As soon as datasource settings change detected by SDK old datasource instance will be disposed and a new one will be created using NewSampleDatasource factory function.
func (*Datasource) ExecuteQuery ¶ added in v1.2.3
func (d *Datasource) ExecuteQuery(queryString string) (*sql.Rows, error)
func (*Datasource) QueryData ¶ added in v1.2.0
func (d *Datasource) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error)
QueryData handles multiple queries and returns multiple responses. req contains the queries []DataQuery (where each query contains RefID as a unique identifier). The QueryDataResponse contains a map of RefID to the response for each query, and each response contains Frames ([]*Frame).
func (*Datasource) RefreshDBConnection ¶ added in v1.2.3
func (d *Datasource) RefreshDBConnection() error
Source Files