grafana/pkg/promlib/client/transport.go
2024-03-20 21:22:33 +02:00

49 lines
1.4 KiB
Go

package client
import (
"context"
"fmt"
"strings"
"github.com/grafana/grafana-plugin-sdk-go/backend"
sdkhttpclient "github.com/grafana/grafana-plugin-sdk-go/backend/httpclient"
"github.com/grafana/grafana-plugin-sdk-go/data/utils/maputil"
"github.com/grafana/grafana-plugin-sdk-go/backend/log"
"github.com/grafana/grafana/pkg/promlib/middleware"
"github.com/grafana/grafana/pkg/promlib/utils"
)
// CreateTransportOptions creates options for the http client.
func CreateTransportOptions(ctx context.Context, settings backend.DataSourceInstanceSettings, logger log.Logger) (*sdkhttpclient.Options, error) {
opts, err := settings.HTTPClientOptions(ctx)
if err != nil {
return nil, fmt.Errorf("error getting HTTP options: %w", err)
}
jsonData, err := utils.GetJsonData(settings)
if err != nil {
return nil, fmt.Errorf("error reading settings: %w", err)
}
httpMethod, _ := maputil.GetStringOptional(jsonData, "httpMethod")
opts.Middlewares = middlewares(logger, httpMethod)
return &opts, nil
}
func middlewares(logger log.Logger, httpMethod string) []sdkhttpclient.Middleware {
middlewares := []sdkhttpclient.Middleware{
// TODO: probably isn't needed anymore and should by done by http infra code
middleware.CustomQueryParameters(logger),
}
// Needed to control GET vs POST method of the requests
if strings.ToLower(httpMethod) == "get" {
middlewares = append(middlewares, middleware.ForceHttpGet(logger))
}
return middlewares
}