歩哨-youtrackプラグイン：PicklingErrorは：<型 'ジェネレータ'>酸洗いすることはできません：__発電__builtin属性の検索に失敗した

Question

• 歩哨：8.4.0
• 歩哨-youtrackプラグイン：0.3.1
• youtrack- 6.5.17105
• のpython-memcachedを：1.53

私はthisプラグインを使用してsentryにyoutrackを統合しようとしています。

[その他] - > [YouTrackの作成]をクリックすると、ページがハングしているようです。 syslogのを見て、私はこれを見た：

Traceback (most recent call last): 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/core/handlers/base.py", line 112, in get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/views/generic/base.py", line 69, in view 
    return self.dispatch(request, *args, **kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/utils/decorators.py", line 29, in _wrapper 
    return bound_func(*args, **kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/utils/decorators.py", line 99, in _wrapped_view 
    response = view_func(request, *args, **kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/utils/decorators.py", line 25, in bound_func 
    return func(self, *args2, **kwargs2) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/web/frontend/base.py", line 172, in dispatch 
    return self.handle(request, *args, **kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/web/frontend/group_plugin_action.py", line 25, in handle 
    response = plugin.get_view_response(request, group) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/plugin.py", line 113, in get_view_response 
    return super(YouTrackPlugin, self).get_view_response(request, group) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/plugins/base/v1.py", line 296, in get_view_response 
    response = self.view(request, group) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/plugin.py", line 131, in view 
    return view(request, group, **kwargs) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/plugins/bases/issue.py", line 169, in view 
    form = self.get_new_issue_form(request, group, event) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/plugin.py", line 77, in get_new_issue_form 
    project_fields=self.get_project_fields(group.project), 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/plugin.py", line 57, in get_project_fields 
    return cached_fields(self.get_option('ignore_fields', project)) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/utils.py", line 16, in wrapper 
    cache.set(key, result, timeout) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/core/cache/backends/memcached.py", line 82, in set 
    self._cache.set(key, value, self._get_memcache_timeout(timeout)) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 740, in set 
    return self._set("set", key, val, time, min_compress_len, noreply) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1060, in _set 
    return _unsafe_set() 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1034, in _unsafe_set 
    store_info = self._val_to_store_info(val, min_compress_len) 
    File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 998, in _val_to_store_info 
    pickler.dump(val) 
PicklingError: Can't pickle <type 'generator'>: attribute lookup __builtin__.generator failed 

トレースバック（https://github.com/bogdal/sentry-youtrack/blob/master/sentry_youtrack/utils.py#L6を）フォロー：

def cache_this(timeout=60): 
    def decorator(func): 
     def wrapper(*args, **kwargs): 
      def get_cache_key(*args, **kwargs): 
       params = list(args) + kwargs.values() 
       return md5("".join(map(str, params))).hexdigest() 
      key = get_cache_key(func.__name__, *args, **kwargs) 
      result = cache.get(key) 
      if not result: 
       result = func(*args, **kwargs) 
       cache.set(key, result, timeout) 
      return result 
     return wrapper 
    return decorator 

私はresultが発電機であるため、私たちはこのエラーを得たことを理解しています。

https://github.com/bogdal/sentry-youtrack/blob/master/sentry_youtrack/plugin.py#L51：

def get_project_fields(self, project): 
    @cache_this(600) 
    def cached_fields(ignore_fields): 
     yt_client = self.get_youtrack_client(project) 
     return yt_client.get_project_fields(
      self.get_option('project', project), ignore_fields) 
    return cached_fields(self.get_option('ignore_fields', project)) 

https://github.com/bogdal/sentry-youtrack/blob/master/sentry_youtrack/youtrack.py#L198：だから

def get_project_fields(self, project_id, ignore_fields=None): 
    ignore_fields = ignore_fields or [] 
    for field in self.get_project_fields_list(project_id): 
     if not field['name'] in ignore_fields: 
      yield self._get_custom_project_field_details(field) 

、私はリストに変換しようとしている：

 if not result: 
      result = func(*args, **kwargs) 
      cache.set(key, [f for f in result], timeout) 
     return result 

が、それでも同じエラーを得た：

 File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/utils.py", line 16, in wrapper 
     cache.set(key, [f for f in result], timeout) 
     File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/core/cache/backends/memcached.py", line 82, in set 
     self._cache.set(key, value, self._get_memcache_timeout(timeout)) 
     File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 740, in set 
     return self._set("set", key, val, time, min_compress_len, noreply) 
     File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1060, in _set 
     return _unsafe_set() 
     File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1034, in _unsafe_set 
     store_info = self._val_to_store_info(val, min_compress_len) 
     File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 998, in _val_to_store_info 
     pickler.dump(val) 
    PicklingError: Can't pickle <type 'generator'>: attribute lookup __builtin__.generator failed 

は、その後、私は、ファイルへvalの値をログに記録しようとした：

 try: 
      pickler.dump(val) 
     except Exception: 
      with open('/tmp/quanta.log', 'a+') as f: 
       f.write(str(val)) 

が、そのファイルが作成されません。それでもエラーがCan't pickle <type 'generator'>...は、それがされていた間、と言ったのはなぜ

1. ：だから

    File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../sentry_youtrack/utils.py", line 16, in wrapper 
        cache.set(key, [f for f in result], timeout) 
        File "/usr/local/sentry/local/lib/python2.7/site-packages/sentry/../django/core/cache/backends/memcached.py", line 82, in set 
        self._cache.set(key, value, self._get_memcache_timeout(timeout)) 
        File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 740, in set 
        return self._set("set", key, val, time, min_compress_len, noreply) 
        File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1060, in _set 
        msg = msg[1] 
        File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 1034, in _unsafe_set 
   
        File "/usr/local/sentry/local/lib/python2.7/site-packages/memcache.py", line 998, in _val_to_store_info 
        try: 
       PicklingError: Can't pickle <type 'generator'>: attribute lookup __builtin__.generator failed 
   

   、私は2つの質問を持っている：そして、奇妙なことは、エラーが前と同じラインで起こったことをトレースバック言われていますリストに変換？

2. の値を知るためにこの状況をデバッグするには、pickler.dump(val)を呼び出しますか？

Answer 1

これはsentry-youtrackのバグです。ジェネレータオブジェクトをキャッシュしてはいけません。 python-memcachedにはpycファイルがある可能性があります。そのため、変更したような値をダンプしませんでした。そしてあなたはまた、ジェネレータである（私はリストの中に）追加しました。

キャッシュジェネレータにはcorrect fixがあるので、getsentry/sentry-youtrackを使用してください。