feat(nasdaq): implement caching for symbol change history and improve error handling

rsshub/blueprints/main.py

@@ -249,6 +249,7 @@ def economist_wordlbrief(category=''):
     return render_template('main/atom.xml', **filter_content(ctx(category)))
 
 @bp.route('/nasdaq/symbol_change')
+@cache.cached(timeout=3600)
 def nasdaq_symbol_change(category=''):
     from rsshub.spiders.nasdaq.symbol_change import ctx
     return render_template('main/atom.xml', **filter_content(ctx(category)))

rsshub/spiders/nasdaq/symbol_change.py

@@ -1,33 +1,52 @@
 import json
 import requests
 from rsshub.utils import DEFAULT_HEADERS
+from cachetools import TTLCache
 
-domain = 'https://api.nasdaq.com'
+domain = 'https://www.nasdaq.com'
+
+# 缓存数据，设置缓存大小为 1，TTL 为 300 秒（5 分钟）
+cache = TTLCache(maxsize=1, ttl=300)
 
 
 def parse(post):
     item = {}
     item['title'] = post['effective'] + '，' + post['oldSymbol'] + ' -> ' + post['newSymbol']
     item['description'] = "代码变更：" + item['title'] + '。公司：' + post['companyName']
-    item['link'] = post['url']
+    item['link'] = domain +  post['url'] + f'?mark={post["oldSymbol"]}2{post["newSymbol"]}'
     return item
 
 
 def ctx(category=''):
+    if 'cached_data' in cache:
+        return cache['cached_data']  # 返回缓存数据
+
     url = 'https://api.nasdaq.com/api/quote/list-type-extended/symbolchangehistory'
     DEFAULT_HEADERS.update({
-        'Referer': 'https://www.nasdaq.com/',
+        'Referer': 'https://www.nasdaq.com/market-activity/stocks/symbol-change-history',
         'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
     })
     
-    response = requests.get(url, headers=DEFAULT_HEADERS)
-    response.raise_for_status()  # 确保请求成功
-    posts = json.loads(response.text)['data']['symbolChangeHistoryTable']['rows']
-    
-    return {
+    try:
+        response = requests.get(url, headers=DEFAULT_HEADERS, timeout=10)  # 设置超时时间为 10 秒
+        response.raise_for_status()
+        posts = json.loads(response.text)['data']['symbolChangeHistoryTable']['rows']
+    except requests.exceptions.RequestException as e:
+        return {
+            'title': 'Stock Symbol Change History - Nasdaq',
+            'link': 'https://www.nasdaq.com/market-activity/stocks/symbol-change-history',
+            'description': f'Error fetching data: {e}',
+            'author': 'hillerliao',
+            'items': [],
+        }
+
+    result = {
         'title': 'Stock Symbol Change History - Nasdaq',
         'link': 'https://www.nasdaq.com/market-activity/stocks/symbol-change-history',
         'description': 'View the history of stock symbol changes on Nasdaq. Stay informed on corporate actions, mergers, and rebrandings that result in symbol updates',
         'author': 'hillerliao',
         'items': list(map(parse, posts)),
     }
+
+    cache['cached_data'] = result  # 缓存结果
+    return result