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https://github.com/grafana/grafana.git
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b3e9087557
Move QueryData method into backend plugin manager which HandleRequest uses to query data from plugin SDK supported data sources. This allowed us to remove a lot of code no longer needed. Ref #21510 Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>
116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
package expr
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import (
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"context"
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"encoding/json"
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"sort"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana-plugin-sdk-go/data"
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"github.com/grafana/grafana/pkg/bus"
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"github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/plugins/backendplugin"
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"github.com/grafana/grafana/pkg/plugins/manager"
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"github.com/grafana/grafana/pkg/tsdb"
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"github.com/stretchr/testify/require"
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)
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// nolint:staticcheck // plugins.DataPlugin deprecated
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func TestService(t *testing.T) {
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dsDF := data.NewFrame("test",
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data.NewField("time", nil, []time.Time{time.Unix(1, 0)}),
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data.NewField("value", nil, []*float64{fp(2)}))
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dataSvc := tsdb.NewService()
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dataSvc.PluginManager = &manager.PluginManager{
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BackendPluginManager: fakeBackendPM{},
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}
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s := Service{DataService: &dataSvc}
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me := &mockEndpoint{
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Frames: []*data.Frame{dsDF},
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}
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s.DataService.RegisterQueryHandler("test", func(*models.DataSource) (plugins.DataPlugin, error) {
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return me, nil
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})
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bus.AddHandler("test", func(query *models.GetDataSourceQuery) error {
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query.Result = &models.DataSource{Id: 1, OrgId: 1, Type: "test"}
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return nil
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})
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queries := []Query{
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{
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RefID: "A",
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JSON: json.RawMessage(`{ "datasource": "test", "datasourceId": 1, "orgId": 1, "intervalMs": 1000, "maxDataPoints": 1000 }`),
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},
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{
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RefID: "B",
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JSON: json.RawMessage(`{ "datasource": "__expr__", "datasourceId": -100, "type": "math", "expression": "$A * 2" }`),
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},
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}
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req := &Request{Queries: queries}
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pl, err := s.BuildPipeline(req)
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require.NoError(t, err)
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res, err := s.ExecutePipeline(context.Background(), pl)
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require.NoError(t, err)
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bDF := data.NewFrame("",
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data.NewField("Time", nil, []time.Time{time.Unix(1, 0)}),
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data.NewField("B", nil, []*float64{fp(4)}))
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bDF.RefID = "B"
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expect := &backend.QueryDataResponse{
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Responses: backend.Responses{
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"A": {
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Frames: []*data.Frame{dsDF},
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},
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"B": {
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Frames: []*data.Frame{bDF},
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},
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},
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}
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// Service currently doesn't care about order of datas in the return.
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trans := cmp.Transformer("Sort", func(in []*data.Frame) []*data.Frame {
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out := append([]*data.Frame(nil), in...) // Copy input to avoid mutating it
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sort.SliceStable(out, func(i, j int) bool {
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return out[i].RefID > out[j].RefID
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})
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return out
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})
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options := append([]cmp.Option{trans}, data.FrameTestCompareOptions()...)
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if diff := cmp.Diff(expect, res, options...); diff != "" {
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t.Errorf("Result mismatch (-want +got):\n%s", diff)
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}
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}
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func fp(f float64) *float64 {
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return &f
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}
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type mockEndpoint struct {
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Frames data.Frames
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}
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// nolint:staticcheck // plugins.DataQueryResult deprecated
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func (me *mockEndpoint) DataQuery(ctx context.Context, ds *models.DataSource, query plugins.DataQuery) (
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plugins.DataResponse, error) {
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return plugins.DataResponse{
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Results: map[string]plugins.DataQueryResult{
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"A": {
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Dataframes: plugins.NewDecodedDataFrames(me.Frames),
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},
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},
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}, nil
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}
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type fakeBackendPM struct {
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backendplugin.Manager
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}
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