mirror of
https://github.com/grafana/grafana.git
synced 2024-11-30 04:34:23 -06:00
100 lines
2.5 KiB
Go
100 lines
2.5 KiB
Go
package pluginproxy
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"text/template"
|
|
|
|
"github.com/grafana/grafana/pkg/bus"
|
|
"github.com/grafana/grafana/pkg/log"
|
|
"github.com/grafana/grafana/pkg/middleware"
|
|
m "github.com/grafana/grafana/pkg/models"
|
|
"github.com/grafana/grafana/pkg/plugins"
|
|
"github.com/grafana/grafana/pkg/util"
|
|
)
|
|
|
|
type templateData struct {
|
|
JsonData map[string]interface{}
|
|
SecureJsonData map[string]string
|
|
}
|
|
|
|
func getHeaders(route *plugins.AppPluginRoute, orgId int64, appId string) (http.Header, error) {
|
|
result := http.Header{}
|
|
|
|
query := m.GetPluginSettingByIdQuery{OrgId: orgId, PluginId: appId}
|
|
|
|
if err := bus.Dispatch(&query); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
data := templateData{
|
|
JsonData: query.Result.JsonData,
|
|
SecureJsonData: query.Result.SecureJsonData.Decrypt(),
|
|
}
|
|
|
|
for _, header := range route.Headers {
|
|
var contentBuf bytes.Buffer
|
|
t, err := template.New("content").Parse(header.Content)
|
|
if err != nil {
|
|
return nil, errors.New(fmt.Sprintf("could not parse header content template for header %s.", header.Name))
|
|
}
|
|
|
|
err = t.Execute(&contentBuf, data)
|
|
if err != nil {
|
|
return nil, errors.New(fmt.Sprintf("failed to execute header content template for header %s.", header.Name))
|
|
}
|
|
|
|
log.Trace("Adding header to proxy request. %s: %s", header.Name, contentBuf.String())
|
|
result.Add(header.Name, contentBuf.String())
|
|
}
|
|
|
|
return result, nil
|
|
}
|
|
|
|
func NewApiPluginProxy(ctx *middleware.Context, proxyPath string, route *plugins.AppPluginRoute, appId string) *httputil.ReverseProxy {
|
|
targetUrl, _ := url.Parse(route.Url)
|
|
|
|
director := func(req *http.Request) {
|
|
|
|
req.URL.Scheme = targetUrl.Scheme
|
|
req.URL.Host = targetUrl.Host
|
|
req.Host = targetUrl.Host
|
|
|
|
req.URL.Path = util.JoinUrlFragments(targetUrl.Path, proxyPath)
|
|
|
|
// clear cookie headers
|
|
req.Header.Del("Cookie")
|
|
req.Header.Del("Set-Cookie")
|
|
|
|
//Create a HTTP header with the context in it.
|
|
ctxJson, err := json.Marshal(ctx.SignedInUser)
|
|
if err != nil {
|
|
ctx.JsonApiErr(500, "failed to marshal context to json.", err)
|
|
return
|
|
}
|
|
|
|
req.Header.Add("X-Grafana-Context", string(ctxJson))
|
|
|
|
if len(route.Headers) > 0 {
|
|
headers, err := getHeaders(route, ctx.OrgId, appId)
|
|
if err != nil {
|
|
ctx.JsonApiErr(500, "Could not generate plugin route header", err)
|
|
return
|
|
}
|
|
|
|
for key, value := range headers {
|
|
log.Trace("setting key %v value %v", key, value[0])
|
|
req.Header.Set(key, value[0])
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return &httputil.ReverseProxy{Director: director}
|
|
}
|