mirror of https://github.com/grafana/grafana.git
111 lines
3.6 KiB
Go
111 lines
3.6 KiB
Go
package api
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana/pkg/api/dtos"
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"github.com/grafana/grafana/pkg/api/response"
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"github.com/grafana/grafana/pkg/api/routing"
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"github.com/grafana/grafana/pkg/apimachinery/identity"
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"github.com/grafana/grafana/pkg/middleware/requestmeta"
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"github.com/grafana/grafana/pkg/services/apiserver/endpoints/request"
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contextmodel "github.com/grafana/grafana/pkg/services/contexthandler/model"
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"github.com/grafana/grafana/pkg/services/datasources"
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"github.com/grafana/grafana/pkg/services/featuremgmt"
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"github.com/grafana/grafana/pkg/util/errhttp"
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"github.com/grafana/grafana/pkg/web"
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)
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func (hs *HTTPServer) handleQueryMetricsError(err error) *response.NormalResponse {
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if errors.Is(err, datasources.ErrDataSourceAccessDenied) {
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return response.Error(http.StatusForbidden, "Access denied to data source", err)
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}
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if errors.Is(err, datasources.ErrDataSourceNotFound) {
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return response.Error(http.StatusNotFound, "Data source not found", err)
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}
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return response.ErrOrFallback(http.StatusInternalServerError, "Query data error", err)
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}
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// metrics.go
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func (hs *HTTPServer) getDSQueryEndpoint() web.Handler {
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if hs.Features.IsEnabledGlobally(featuremgmt.FlagQueryServiceRewrite) {
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// rewrite requests from /ds/query to the new query service
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namespaceMapper := request.GetNamespaceMapper(hs.Cfg)
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return func(w http.ResponseWriter, r *http.Request) {
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user, err := identity.GetRequester(r.Context())
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if err != nil || user == nil {
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errhttp.Write(r.Context(), fmt.Errorf("no user"), w)
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return
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}
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r.URL.Path = "/apis/query.grafana.app/v0alpha1/namespaces/" + namespaceMapper(user.GetOrgID()) + "/query"
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hs.clientConfigProvider.DirectlyServeHTTP(w, r)
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}
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}
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return routing.Wrap(hs.QueryMetricsV2)
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}
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// QueryMetricsV2 returns query metrics.
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// swagger:route POST /ds/query ds queryMetricsWithExpressions
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//
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// DataSource query metrics with expressions.
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//
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// If you are running Grafana Enterprise and have Fine-grained access control enabled
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// you need to have a permission with action: `datasources:query`.
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//
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// Responses:
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// 200: queryMetricsWithExpressionsRespons
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// 207: queryMetricsWithExpressionsRespons
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// 401: unauthorisedError
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// 400: badRequestError
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// 403: forbiddenError
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// 500: internalServerError
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func (hs *HTTPServer) QueryMetricsV2(c *contextmodel.ReqContext) response.Response {
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reqDTO := dtos.MetricRequest{}
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if err := web.Bind(c.Req, &reqDTO); err != nil {
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return response.Error(http.StatusBadRequest, "bad request data", err)
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}
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resp, err := hs.queryDataService.QueryData(c.Req.Context(), c.SignedInUser, c.SkipDSCache, reqDTO)
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if err != nil {
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return hs.handleQueryMetricsError(err)
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}
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return hs.toJsonStreamingResponse(c.Req.Context(), resp)
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}
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func (hs *HTTPServer) toJsonStreamingResponse(ctx context.Context, qdr *backend.QueryDataResponse) response.Response {
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statusCode := http.StatusOK
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for _, res := range qdr.Responses {
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if res.Error != nil {
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statusCode = http.StatusBadRequest
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break
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}
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}
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if statusCode == http.StatusBadRequest {
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// an error in the response we treat as downstream.
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requestmeta.WithDownstreamStatusSource(ctx)
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}
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return response.JSONStreaming(statusCode, qdr)
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}
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// swagger:parameters queryMetricsWithExpressions
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type QueryMetricsWithExpressionsBodyParams struct {
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// in:body
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// required:true
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Body dtos.MetricRequest `json:"body"`
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}
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// swagger:response queryMetricsWithExpressionsRespons
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type QueryMetricsWithExpressionsRespons struct {
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// The response message
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// in: body
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Body *backend.QueryDataResponse `json:"body"`
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}
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