Atomic/scan.py: Fix scan error message (BZ #1508453)

BZ #1508453 correctly points out that the error message
points to the wrong file when telling the user it cannot
find the scanner image or arguments.

Signed-off-by: baude <bbaude@redhat.com>

Atomic/scan.py

@@ -110,17 +110,16 @@ def get_additional_args():
         scan_type = self.get_scan_type()
 
         # Load the atomic config file and check scanner settings
-        yaml_error = "The image name or scanner arguments for '{}' is not " \
-                     "defined in /etc/atomic.conf".format(self.scanner)
-
         scanner_image_name, scanner_args, custom_args = get_scan_info(self.scanner, scan_type)
 
         if not isinstance(scanner_args, list):
             raise ValueError("The scanner arguments for {} must be in list"
                              " ([]) form.".format(self.scanner))
 
         if None in [scanner_image_name, scanner_args]:
-            raise ValueError(yaml_error)
+            sconf_file = util.get_scanner_conf_path_by_name(self.scanner)
+            raise ValueError("The scanner configuration for '{}' in '{}' is missing its image name "
+                             "or scanner arguments".format(self.scanner, sconf_file))
 
         self.results_dir = os.path.join(self.results, self.scanner, self.cur_time)
 

Atomic/util.py

@@ -486,6 +486,22 @@ def _recursive_get(atomic_config, items):
     else:
         return default
 
+def get_scanner_conf_path_by_name(scanner_name):
+    if not os.path.exists(ATOMIC_CONFD):
+        raise ValueError("{} does not exist".format(ATOMIC_CONFD))
+    files = [os.path.join(ATOMIC_CONFD, x) for x in os.listdir(ATOMIC_CONFD) if os.path.isfile(os.path.join(ATOMIC_CONFD, x))]
+    for f in files:
+        with open(f, 'r') as conf_file:
+            try:
+                temp_conf = yaml_load(conf_file)
+                if temp_conf.get('type') == "scanner" and temp_conf.get("scanner_name") == scanner_name:
+                    return conf_file.name
+            except YAMLError:
+                pass
+            except AttributeError:
+                pass
+    raise ValueError("Unable to correlate {} to its configuration file".format(scanner_name))
+
 def get_scanners():
     scanners = []
     if not os.path.exists(ATOMIC_CONFD):