plugin

Documentation

Index

• func NewCloudTraceDatasource(settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error)
• type CloudTraceDatasource
  • func (d *CloudTraceDatasource) CallResource(ctx context.Context, req *backend.CallResourceRequest, ...) error
  • func (d *CloudTraceDatasource) CheckHealth(ctx context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error)
  • func (d *CloudTraceDatasource) Dispose()
  • func (d *CloudTraceDatasource) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error)

Functions

func NewCloudTraceDatasource

func NewCloudTraceDatasource(settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error)

NewCloudTraceDatasource creates a new datasource instance.

Types

type CloudTraceDatasource

type CloudTraceDatasource struct {
	// contains filtered or unexported fields
}

CloudTraceDatasource is an example datasource which can respond to data queries, reports its health and has streaming skills.

func (*CloudTraceDatasource) CallResource

func (d *CloudTraceDatasource) CallResource(ctx context.Context, req *backend.CallResourceRequest, sender backend.CallResourceResponseSender) error

CallResource fetches some resource from GCP using the data source's credentials

Currently only projects are fetched, other requests receive a 404

func (*CloudTraceDatasource) CheckHealth

func (d *CloudTraceDatasource) CheckHealth(ctx 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 (*CloudTraceDatasource) Dispose

func (d *CloudTraceDatasource) 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 (*CloudTraceDatasource) QueryData

func (d *CloudTraceDatasource) 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).