X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=nfvbench%2Fconfig.py;h=8e7712792226c9b931330372fa8bbde6ebdd183b;hb=HEAD;hp=b2972ddf0fa92d4dfdacfc0c0004699e214fa3ed;hpb=04a7de082bd221eae3c7004f4e0b99dfa4f8be91;p=nfvbench.git

diff --git a/nfvbench/config.py b/nfvbench/config.py
index b2972dd..8e77127 100644
--- a/nfvbench/config.py
+++ b/nfvbench/config.py
@@ -16,41 +16,73 @@
 from attrdict import AttrDict
 import yaml
 
+from .log import LOG
 
-def config_load(file_name, from_cfg=None):
+def config_load(file_name, from_cfg=None, whitelist_keys=None):
     """Load a yaml file into a config dict, merge with from_cfg if not None
     The config file content taking precedence in case of duplicate
     """
     try:
-        with open(file_name) as fileobj:
+        with open(file_name, encoding="utf-8") as fileobj:
             cfg = AttrDict(yaml.safe_load(fileobj))
     except IOError:
         raise Exception("Configuration file at '{}' was not found. Please use correct path "
                         "and verify it is visible to container if you run nfvbench in container."
-                        .format(file_name))
+                        .format(file_name)) from IOError
 
     if from_cfg:
+        if not whitelist_keys:
+            whitelist_keys = []
+        _validate_config(cfg, from_cfg, whitelist_keys)
         cfg = from_cfg + cfg
 
     return cfg
 
 
-def config_loads(cfg_text, from_cfg=None):
+def config_loads(cfg_text, from_cfg=None, whitelist_keys=None):
     """Same as config_load but load from a string
     """
     try:
-        cfg = AttrDict(yaml.load(cfg_text))
+        cfg = AttrDict(yaml.safe_load(cfg_text))
     except TypeError:
         # empty string
         cfg = AttrDict()
+    except ValueError as e:
+        # In case of wrong path or file not readable or string not well formatted
+        LOG.error("String %s is not well formatted. Please verify your yaml/json string. "
+                  "If string is a file path, file was not found. Please use correct path and "
+                  "verify it is visible to container if you run nfvbench in container.", cfg_text)
+        raise Exception(e) from e
     if from_cfg:
+        if not whitelist_keys:
+            whitelist_keys = []
+        _validate_config(cfg, from_cfg, whitelist_keys)
         return from_cfg + cfg
     return cfg
 
 
-def test_config():
-    cfg = config_load('a1.yaml')
-    cfg = config_load('a2.yaml', cfg)
-    cfg = config_loads('color: 500', cfg)
-    config_loads('')
-    config_loads('#')
+def _validate_config(subset, superset, whitelist_keys):
+    def get_err_config(subset, superset):
+        result = {}
+        for k, v in list(subset.items()):
+            if k not in whitelist_keys:
+                if k not in superset:
+                    result.update({k: v})
+                elif v is not None and superset[k] is not None:
+                    if not isinstance(v, type(superset[k])):
+                        result.update({k: v})
+                        continue
+                if isinstance(v, dict):
+                    res = get_err_config(v, superset[k])
+                    if res:
+                        result.update({k: res})
+        if not result:
+            return None
+        return result
+
+    err_cfg = get_err_config(subset, superset)
+    if err_cfg:
+        err_msg = 'The provided configuration has unknown options or values with invalid type: '\
+                  + str(err_cfg)
+        LOG.error(err_msg)
+        raise Exception(err_msg)