From e87bc4b941564aace95d60ff987b7ec0d508b437 Mon Sep 17 00:00:00 2001
From: Leah <8845940+ForsakenHarmony@users.noreply.github.com>
Date: Wed, 27 Mar 2024 23:27:07 +0100
Subject: [PATCH] fix: prevent authenticating multiple times in parallel
 (#1168)

Signed-off-by: hrmny <8845940+ForsakenHarmony@users.noreply.github.com>
---
 proxmox/api/ticket_auth.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/proxmox/api/ticket_auth.go b/proxmox/api/ticket_auth.go
index 9ae32b52..642a6eab 100644
--- a/proxmox/api/ticket_auth.go
+++ b/proxmox/api/ticket_auth.go
@@ -14,6 +14,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"sync"
 
 	"github.com/hashicorp/terraform-plugin-log/tflog"
 
@@ -24,6 +25,8 @@ type ticketAuthenticator struct {
 	conn        *Connection
 	authRequest string
 	authData    *AuthenticationResponseData
+
+	mu sync.Mutex
 }
 
 // NewTicketAuthenticator returns a new ticket authenticator.
@@ -46,6 +49,9 @@ func NewTicketAuthenticator(conn *Connection, creds *Credentials) (Authenticator
 }
 
 func (t *ticketAuthenticator) authenticate(ctx context.Context) (*AuthenticationResponseData, error) {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+
 	if t.authData != nil {
 		return t.authData, nil
 	}