mirror of
https://github.com/grafana/grafana.git
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88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
package pluginproxy
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import (
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"encoding/json"
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"net/http"
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"net/http/httputil"
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"net/url"
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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/services/secrets"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/util"
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"github.com/grafana/grafana/pkg/util/proxyutil"
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)
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type templateData struct {
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JsonData map[string]interface{}
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SecureJsonData map[string]string
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}
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// NewApiPluginProxy create a plugin proxy
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func NewApiPluginProxy(ctx *models.ReqContext, proxyPath string, route *plugins.Route,
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appID string, cfg *setting.Cfg, secretsService secrets.Service) *httputil.ReverseProxy {
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director := func(req *http.Request) {
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query := models.GetPluginSettingByIdQuery{OrgId: ctx.OrgId, PluginId: appID}
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if err := bus.Dispatch(ctx.Req.Context(), &query); err != nil {
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ctx.JsonApiErr(500, "Failed to fetch plugin settings", err)
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return
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}
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secureJsonData, err := secretsService.DecryptJsonData(ctx.Req.Context(), query.Result.SecureJsonData)
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if err != nil {
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ctx.JsonApiErr(500, "Failed to decrypt plugin settings", err)
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return
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}
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data := templateData{
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JsonData: query.Result.JsonData,
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SecureJsonData: secureJsonData,
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}
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interpolatedURL, err := interpolateString(route.URL, data)
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if err != nil {
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ctx.JsonApiErr(500, "Could not interpolate plugin route url", err)
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return
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}
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targetURL, err := url.Parse(interpolatedURL)
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if err != nil {
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ctx.JsonApiErr(500, "Could not parse url", err)
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return
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}
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req.URL.Scheme = targetURL.Scheme
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req.URL.Host = targetURL.Host
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req.Host = targetURL.Host
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req.URL.Path = util.JoinURLFragments(targetURL.Path, proxyPath)
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// clear cookie headers
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req.Header.Del("Cookie")
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req.Header.Del("Set-Cookie")
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proxyutil.PrepareProxyRequest(req)
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// Create a HTTP header with the context in it.
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ctxJSON, err := json.Marshal(ctx.SignedInUser)
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if err != nil {
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ctx.JsonApiErr(500, "failed to marshal context to json.", err)
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return
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}
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req.Header.Set("X-Grafana-Context", string(ctxJSON))
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applyUserHeader(cfg.SendUserHeader, req, ctx.SignedInUser)
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if err := addHeaders(&req.Header, route, data); err != nil {
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ctx.JsonApiErr(500, "Failed to render plugin headers", err)
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return
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}
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if err := setBodyContent(req, route, data); err != nil {
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logger.Error("Failed to set plugin route body content", "error", err)
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}
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}
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return &httputil.ReverseProxy{Director: director}
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}
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