同步

utils/cache.py

@@ -126,4 +126,5 @@ class RedisCache(object):
 
 
 common_cache = RedisWrapper('__common_cache', settings.REDIS_TOPIC_1ST['page_cache'])
+picture_tool_cache = RedisWrapper('__picture_tool', settings.REDIS_TOPIC_1ST['page_cache'])
 common_cache_wrapper = RedisCache(common_cache)

utils/pic.py

+# coding:utf-8
+
+import hashlib
+import json
+
+import requests
+
+
+"""图片相关"""
+
+
+info_suffix = '-imageinfo'
+
+
+class PictureTools(object):
+
+    @staticmethod
+    def info(url):
+        try:
+            img_info = json.loads(requests.get(url=url + info_suffix).text)
+            return img_info
+        except:
+            return {}
+
+    @classmethod
+    def is_dynamic(cls, url):
+        from .cache import picture_tool_cache
+
+        if not url:
+            return False
+
+        encode_url = url
+        if not isinstance(url, bytes):
+            encode_url = url.encode('utf-8')
+
+        k = hashlib.md5(encode_url).hexdigest()
+        raw = picture_tool_cache.get(k)
+        if raw is not None:
+            is_dynamic = True if int(raw) else False
+            return is_dynamic
+
+        img_info = cls.info(url)
+        print(img_info)
+        fmt = img_info.get("format", '')
+        is_dynamic = True if fmt.lower() in ('gif', 'webp') else False
+
+        picture_tool_cache.set(k, int(is_dynamic))
+
+        return is_dynamic