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[tor-commits] [sbws/master] config: continue when the file is not found



commit 03136450f0f550fe9dbe586054d8f83733124b56
Author: juga0 <juga@xxxxxxxxxx>
Date:   Sun Nov 18 10:05:26 2018 +0000

    config: continue when the file is not found
    
    Continue running with defaults when the config argument is provided
    but not found. This could be the case of system packages.
---
 CHANGELOG.md                   | 2 ++
 sbws/util/config.py            | 9 ++++++---
 tests/unit/util/test_config.py | 5 +++++
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e5750bc..d9a6c48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - Make sbws round to 3 significant figures in torflow rounding mode, rather
   than rounding to the nearest 1000 kilobytes (#28442).
+- Continue running with defaults when the config argument is provided
+  but not found (#28500).
 
 ## [1.0.2] - 2018-11-10
 
diff --git a/sbws/util/config.py b/sbws/util/config.py
index 80c2761..67ec0e0 100644
--- a/sbws/util/config.py
+++ b/sbws/util/config.py
@@ -10,7 +10,7 @@ from string import Template
 from tempfile import NamedTemporaryFile
 from sbws.globals import (DEFAULT_CONFIG_PATH, DEFAULT_LOG_CONFIG_PATH,
                           USER_CONFIG_PATH, SUPERVISED_RUN_DPATH,
-                          SUPERVISED_USER_CONFIG_PATH, fail_hard)
+                          SUPERVISED_USER_CONFIG_PATH)
 
 _ALPHANUM = 'abcdefghijklmnopqrstuvwxyz'
 _ALPHANUM += _ALPHANUM.upper()
@@ -66,8 +66,11 @@ def _get_user_config(args, conf=None):
         assert isinstance(conf, ConfigParser)
     if args.config:
         if not os.path.isfile(args.config):
-            fail_hard('Configuration file %s not found.', args.config)
-        return _extend_config(conf, args.config)
+            # XXX: The logger is not configured at this stage,
+            # sbws should start with a logger before reading configurations.
+            print('Configuration file %s not found, using defaults.' %
+                  args.config)
+        return conf
     user_config_path = _obtain_user_conf_path()
     if os.path.isfile(user_config_path):
         return _extend_config(conf, user_config_path)
diff --git a/tests/unit/util/test_config.py b/tests/unit/util/test_config.py
index e259e52..e3aba98 100644
--- a/tests/unit/util/test_config.py
+++ b/tests/unit/util/test_config.py
@@ -230,3 +230,8 @@ def test_nickname():
         d = {'n': nick}
         valid, reason = con._validate_nickname(d, 'n')
         assert not valid, reason
+
+
+def test_config_arg_provided_but_no_found(args, conf):
+    args.config = 'non_existing_file'
+    con._get_user_config(args, conf=None)

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