Fix proxy formating when user or password aren't set

checks/check_status.py

@@ -125,7 +125,21 @@ def validate_api_key(config):
         proxy = get_proxy(agentConfig=config)
         request_proxy = {}
         if proxy:
-            request_proxy = {'https': "http://{user}:{password}@{host}:{port}".format(**proxy)}
+            # key might set to None
+            user = proxy.get("user", "") or ""
+            password = proxy.get("password", "") or ""
+            if user:
+                if password:
+                    user += ":" + password
+                user += "@"
+
+            host = proxy.get("host", "") or ""
+            port = proxy.get("port", "") or ""
+            if host and port:
+                host += ":" + str(proxy["port"])
+
+            request_proxy = {'https': "http://%s%s" % (user, host)}
+
         r = requests.get("%s/api/v1/validate" % config['dd_url'].rstrip('/'),
             params={'api_key': config.get('api_key')}, proxies=request_proxy,
             timeout=3, verify=(not config.get('skip_ssl_validation', False)))