Fix missing configuration error not raised correctly

clearml/backend_api/api_proxy.py

@@ -32,7 +32,10 @@ class ApiServiceProxy(object):
                 )
 
             # get the most advanced service version that supports our api
-            version = [str(v) for v in ApiServiceProxy._available_versions if Session.check_min_api_version(v)][-1]
+            version = [
+                str(v) for v in ApiServiceProxy._available_versions
+                if Session.check_min_api_version(v, raise_error=False)
+            ][-1]
             Session.api_version = version
             self.__dict__["__wrapped_version__"] = Session.api_version
             name = ".v{}.{}".format(

clearml/backend_api/session/defs.py

@@ -40,7 +40,6 @@ for a very long time for a non-responding or mis-configured server
 """
 ENV_API_EXTRA_RETRY_CODES = EnvEntry("CLEARML_API_EXTRA_RETRY_CODES")
 
-
 ENV_FORCE_MAX_API_VERSION = EnvEntry("CLEARML_FORCE_MAX_API_VERSION", type=str)
 
 

clearml/backend_api/session/session.py

@@ -31,6 +31,7 @@ from .defs import (
     ENV_API_EXTRA_RETRY_CODES,
     ENV_API_DEFAULT_REQ_METHOD,
     ENV_FORCE_MAX_API_VERSION,
+    ENV_IGNORE_MISSING_CONFIG,
     MissingConfigError
 )
 from .request import Request, BatchRequest  # noqa: F401
@@ -736,7 +737,7 @@ class Session(TokenManager):
         return urlunparse(parsed)
 
     @classmethod
-    def check_min_api_version(cls, min_api_version):
+    def check_min_api_version(cls, min_api_version, raise_error=True):
         """
         Return True if Session.api_version is greater or equal >= to min_api_version
         """
@@ -764,6 +765,9 @@ class Session(TokenManager):
                 # noinspection PyBroadException
                 try:
                     cls()
+                except MissingConfigError:
+                    if raise_error and not ENV_IGNORE_MISSING_CONFIG.get():
+                        raise
                 except Exception:
                     pass