add cdn url

music_genre.py

@@ -1,4 +1,5 @@
 import os
+import socket
 import random
 import datasets
 from datasets.tasks import ImageClassification
@@ -35,7 +36,9 @@ _NAMES_3 = {
     22: "Acoustic_pop"
 }
 
-_HOMEPAGE = f"https://huggingface.co/datasets/ccmusic-database/{os.path.basename(__file__).split('.')[0]}"
+_NAME = os.path.basename(__file__).split('.')[0]
+
+_HOMEPAGE = f"https://huggingface.co/datasets/ccmusic-database/{_NAME}"
 
 _CITATION = """\
 @dataset{zhaorui_liu_2021_5676893,
@@ -55,7 +58,17 @@ This database contains about 1700 musical pieces (.mp3 format)
 with lengths of 270-300s that are divided into 17 genres in total. 
 """
 
-_URL = _HOMEPAGE + "/resolve/main/data/data.zip"
+
+def _cdn_url(ip='10.115.8.4', port=80):
+    try:
+        # create a socket connection
+        with socket.create_connection((ip, port), timeout=5):
+            return f'http://{ip}/{_NAME}/data/data.zip'
+    except (socket.timeout, socket.error):
+        return f"{_HOMEPAGE}/resolve/main/data/data.zip"
+
+
+_URL = _cdn_url()
 
 
 class music_genre(datasets.GeneratorBasedBuilder):