Merge pull request #2 from telia-oss/graphql-proxy-fix

Fix type assert

backend/plugins/github_graphql/impl/impl.go

@@ -20,8 +20,8 @@ package impl
 import (
 	"context"
 	"fmt"
-	"net/url"
 	"net/http"
+	"net/url"
 	"reflect"
 	"time"
 
@@ -159,16 +159,26 @@ func (p GithubGraphql) PrepareTaskData(taskCtx plugin.TaskContext, options map[s
 		&oauth2.Token{AccessToken: connection.GetToken()},
 	)
 	httpClient := oauth2.NewClient(taskCtx.GetContext(), src)
-    proxy := connection.GetProxy()
-    if proxy != "" {
-        pu, err := url.Parse(proxy)
-        if err != nil {
-            return nil, errors.Convert(err)
-        }
-        if pu.Scheme == "http" || pu.Scheme == "socks5" {
-            httpClient.Transport.(*http.Transport).Proxy = http.ProxyURL(pu)
-        }
-    }
+	proxy := connection.GetProxy()
+	if proxy != "" {
+		pu, err := url.Parse(proxy)
+		if err != nil {
+			return nil, errors.Convert(err)
+		}
+		if pu.Scheme == "http" || pu.Scheme == "socks5" {
+			if oauthTransport, ok := httpClient.Transport.(*oauth2.Transport); ok {
+				if httpTransport, ok := oauthTransport.Base.(*http.Transport); ok {
+					httpTransport.Proxy = http.ProxyURL(pu)
+				} else {
+					return nil, errors.Default.New("unable to set proxy for oauth transport")
+				}
+			} else if httpTransport, ok := httpClient.Transport.(*http.Transport); ok {
+				httpTransport.Proxy = http.ProxyURL(pu)
+			} else {
+				return nil, errors.Default.New("unable to set proxy for http transport")
+			}
+		}
+	}
 
 	endpoint, err := errors.Convert01(url.JoinPath(connection.Endpoint, `graphql`))
 	if err != nil {