1 files changed, 49 insertions, 0 deletions
diff --git a/oslo_utils/fileutils.py b/oslo_utils/fileutils.py
index 909ed4b..36c0049 100644
--- a/oslo_utils/fileutils.py
+++ b/oslo_utils/fileutils.py
@@ -22,10 +22,12 @@ File utilities.
 import contextlib
 import errno
 import hashlib
+import json
 import os
 import stat
 import tempfile
 import time
+import yaml
 
 from oslo_utils import excutils
 
@@ -158,3 +160,50 @@ def last_bytes(path, num):
                 raise
         unread_bytes = fp.tell()
         return (fp.read(), unread_bytes)
+
+
+def is_json(file_path):
+    """Check if file is of json type or not.
+
+    This function try to load the input file using json.loads()
+    and return False if ValueError otherwise True.
+
+    :param file_path: The file path to check
+
+    :returns: bool
+
+    """
+    with open(file_path, 'r') as fh:
+        data = fh.read()
+    try:
+        json.loads(data)
+        return True
+    except ValueError:
+        return False
+
+
+def is_yaml(file_path):
+    """Check if file is of yaml type or not.
+
+    This function try to load the input file using yaml.safe_load()
+    and return True if loadable. Because every json file can be loadable
+    in yaml, so this function return False if file is loadable using
+    json.loads() means it is json file.
+
+    :param file_path: The file path to check
+
+    :returns: bool
+
+    """
+    with open(file_path, 'r') as fh:
+        data = fh.read()
+        is_yaml = False
+        try:
+            json.loads(data)
+        except ValueError:
+            try:
+                yaml.safe_load(data)
+                is_yaml = True
+            except yaml.scanner.ScannerError:
+                pass
+        return is_yaml