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我不确定如何进一步诊断。Heroku 的 evns 配置正确。一切都在我的本地机器线上工作很有吸引力。在生产中，当我尝试使用此功能时出现内部服务器错误。

我预订了一个 live shell，那里一切正常：

In [5]: s3conn = boto.connect_s3(app.config["AWS_ACCESS_KEY_ID"],app.config["AWS_SECRET_ACCESS_KEY"])

In [6]: s3conn
Out[6]: S3Connection:s3.amazonaws.com

In [7]: bucket = s3conn.get_bucket(app.config["S3_BUCKET"])

In [8]: bucket
Out[8]: <Bucket: petalbucket>

In [10]: key = bucket.get_key('AGRAPH')

In [11]: key

In [12]: type(key)
Out[12]: NoneType



In [14]: key = bucket.get_key('charts/AGRAPH')

In [15]: key
Out[15]: <Key: petalbucket,charts/AGRAPH>

In [16]: seconds = 60*5

In [17]: url = key.generate_url(expires_in=seconds)

In [18]: url
Out[18]: 'https://petalbucket.s3.amazonaws.com/charts/AGRAPH?Signature=VL9Q9r0Q%2F5UbZDhW%2F%2BeUYFezSGU%3D&Expires=1357251512&AWSAccessKeyId=AKIAJBEQAKKMVPGYYNRA'

代码：

 def download_s3(file_title):
        s3conn = boto.connect_s3(app.config["AWS_ACCESS_KEY_ID"],app.config["AWS_SECRET_ACCESS_KEY"])
        bucket = s3conn.get_bucket(app.config["S3_BUCKET"])
        key = bucket.get_key(file_title)
        seconds = 60*5
        url = key.generate_url(expires_in=seconds)
        return url

heroku 日志：

2013-01-03T22:21:05+00:00 app[web.1]:     respiter = self.wsgi(environ, resp.start_response)
2013-01-03T22:21:05+00:00 app[web.1]:     response = self.make_response(self.handle_exception(e))
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/web_transaction.py", line 563, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]: Traceback (most recent call last):
2013-01-03T22:21:05+00:00 app[web.1]:     result = application(environ, _start_response)
2013-01-03T22:21:05+00:00 app[web.1]: 2013-01-03 22:21:05 [7] [ERROR] Error handling request
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 105, in handle_request
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/web_transaction.py", line 485, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1701, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     return self._nr_next_object(environ, start_response)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1689, in wsgi_app
2013-01-03T22:21:05+00:00 app[web.1]:     response = self.full_dispatch_request()
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request
2013-01-03T22:21:05+00:00 app[web.1]:     rv = self.handle_user_exception(e)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request
2013-01-03T22:21:05+00:00 app[web.1]:     rv = self.dispatch_request()
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask_login.py", line 496, in decorated_view
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/petalapp/views.py", line 135, in add_pci_form
2013-01-03T22:21:05+00:00 app[web.1]:     return fn(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]: AttributeError: 'NoneType' object has no attribute 'generate_url'
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/petalapp/aws/tools.py", line 58, in download_s3
2013-01-03T22:21:05+00:00 app[web.1]:     url = key.generate_url(expires_in=seconds)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/function_trace.py", line 81, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     url =download_s3(in_file + title)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/pre_function.py", line 14, in wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     return self.view_functions[rule.endpoint](**req.view_args)
2013-01-03T22:21:05+00:00 app[web.1]:     return self.wsgi_app(environ, start_response)
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/function_trace.py", line 81, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/transaction_name.py", line 51, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request

我的预感是我不了解 boto 与 heroku 的互动。或者没有正确设置某些东西，但我无法从这些信息中看到可能是什么。

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1 回答 1

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当您输入错误的文件名时（即当您查找“AGRAPH”而不是“charts/AGRAPH”时） ，堆栈建议bucket.get_key(file_title)返回None与您在上面得到的完全相同的响应

设置成什么file_title？这是正确的吗？我建议进行一些调试来获得它的价值。

于 2013-01-03T23:05:45.297 回答