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0cb29d337a
* comes from grafana/gel-app * remove transform plugin code * move __expr__ and -100 constants to expr pkg * set OrgID on request plugin context * use gtime for resample duration * in resample, rename "rule" to "window", use gtime for duration, parse duration before exec * remove gel entry from plugins-bundled/external.json which creates an empty array for plugins
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package expr
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import (
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"context"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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)
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// DatasourceName is the string constant used as the datasource name in requests
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// to identify it as an expression command.
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const DatasourceName = "__expr__"
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// DatasourceID is the fake datasource id used in requests to identify it as an
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// expression command.
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const DatasourceID = -100
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// Service is service representation for expression handling.
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type Service struct {
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}
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// BuildPipeline builds a pipeline from a request.
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func (s *Service) BuildPipeline(queries []backend.DataQuery) (DataPipeline, error) {
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return buildPipeline(queries)
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}
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// ExecutePipeline executes an expression pipeline and returns all the results.
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func (s *Service) ExecutePipeline(ctx context.Context, pipeline DataPipeline) (*backend.QueryDataResponse, error) {
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res := backend.NewQueryDataResponse()
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vars, err := pipeline.execute(ctx)
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if err != nil {
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return nil, err
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}
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for refID, val := range vars {
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res.Responses[refID] = backend.DataResponse{
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Frames: val.Values.AsDataFrames(refID),
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}
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}
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return res, nil
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}
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