cschanaj commented on issue #8859: Ease switching of database engines for docker builds URL: https://github.com/apache/incubator-superset/pull/8859#issuecomment-566846650 @craig-rueda thanks for looking into this PR. I am getting into errors related to flask and python. This is strange especially when I have already configured the environment variable for the `postgres` docker. <details><summary>Error output</summary> <p> ``` $ curl localhost:8088 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> <html> <head> <title>AttributeError: 'NoneType' object has no attribute 'update' // Werkzeug Debugger</title> <link rel="stylesheet" href="?__debugger__=yes&cmd=resource&f=style.css" type="text/css"> <!-- We need to make sure this has a favicon so that the debugger does not by accident trigger a request to /favicon.ico which might change the application state. --> <link rel="shortcut icon" href="?__debugger__=yes&cmd=resource&f=console.png"> <script src="?__debugger__=yes&cmd=resource&f=jquery.js"></script> <script src="?__debugger__=yes&cmd=resource&f=debugger.js"></script> <script type="text/javascript"> var TRACEBACK = 140403735151336, CONSOLE_MODE = false, EVALEX = true, EVALEX_TRUSTED = false, SECRET = "lHufyszic3QrdnL1yz9z"; </script> </head> <body style="background-color: #fff"> <div class="debugger"> <h1>AttributeError</h1> <div class="detail"> <p class="errormsg">AttributeError: 'NoneType' object has no attribute 'update'</p> </div> <h2 class="traceback">Traceback <em>(most recent call last)</em></h2> <div class="traceback"> <ul><li><div class="frame" id="frame-140403735152344"> <h4>File <cite class="filename">"/usr/local/lib/python3.6/site-packages/flask/cli.py"</cite>, line <em class="line">184</em>, in <code class="function">find_app_by_string</code></h4> <div class="source library"><pre class="line before"><span class="ws"> </span>)</pre> <pre class="line before"><span class="ws"> </span>else:</pre> <pre class="line before"><span class="ws"> </span>args = ()</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>try:</pre> <pre class="line current"><span class="ws"> </span>app = call_factory(script_info, attr, args)</pre> <pre class="line after"><span class="ws"> </span>except TypeError as e:</pre> <pre class="line after"><span class="ws"> </span>if not _called_with_wrong_args(attr):</pre> <pre class="line after"><span class="ws"> </span>raise</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>raise NoAppException(</pre></div> </div> <li><div class="frame" id="frame-140403735152400"> <h4>File <cite class="filename">"/usr/local/lib/python3.6/site-packages/flask/cli.py"</cite>, line <em class="line">119</em>, in <code class="function">call_factory</code></h4> <div class="source library"><pre class="line before"><span class="ws"> </span>elif arguments:</pre> <pre class="line before"><span class="ws"> </span>return app_factory(*arguments)</pre> <pre class="line before"><span class="ws"> </span>elif not arguments and len(arg_names) == 1 and arg_defaults is None:</pre> <pre class="line before"><span class="ws"> </span>return app_factory(script_info)</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line current"><span class="ws"> </span>return app_factory()</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"></span>def _called_with_wrong_args(factory):</pre> <pre class="line after"><span class="ws"> </span>"""Check whether calling a function raised a ``TypeError`` because</pre> <pre class="line after"><span class="ws"> </span>the call failed or because something in the factory raised the</pre></div> </div> <li><div class="frame" id="frame-140403735152456"> <h4>File <cite class="filename">"/app/superset/app.py"</cite>, line <em class="line">65</em>, in <code class="function">create_app</code></h4> <div class="source "><pre class="line before"><span class="ws"> </span>return app</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span># Make sure that bootstrap errors ALWAYS get logged</pre> <pre class="line before"><span class="ws"> </span>except Exception as ex:</pre> <pre class="line before"><span class="ws"> </span>logger.exception("Failed to create app")</pre> <pre class="line current"><span class="ws"> </span>raise ex</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"></span>class SupersetIndexView(IndexView):</pre> <pre class="line after"><span class="ws"> </span>@expose("/")</pre> <pre class="line after"><span class="ws"> </span>def index(self):</pre></div> </div> <li><div class="frame" id="frame-140403735152008"> <h4>File <cite class="filename">"/app/superset/app.py"</cite>, line <em class="line">58</em>, in <code class="function">create_app</code></h4> <div class="source "><pre class="line before"><span class="ws"> </span># Allow user to override our config completely</pre> <pre class="line before"><span class="ws"> </span>config_module = os.environ.get("SUPERSET_CONFIG", "superset.config")</pre> <pre class="line before"><span class="ws"> </span>app.config.from_object(config_module)</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>app_initializer = app.config.get("APP_INITIALIZER", SupersetAppInitializer)(app)</pre> <pre class="line current"><span class="ws"> </span>app_initializer.init_app()</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>return app</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span># Make sure that bootstrap errors ALWAYS get logged</pre> <pre class="line after"><span class="ws"> </span>except Exception as ex:</pre></div> </div> <li><div class="frame" id="frame-140403735152120"> <h4>File <cite class="filename">"/app/superset/app.py"</cite>, line <em class="line">163</em>, in <code class="function">init_app</code></h4> <div class="source "><pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>self.configure_middlewares()</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>self.configure_cache()</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line current"><span class="ws"> </span>self.configure_jinja_context()</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>with self.flask_app.app_context():</pre> <pre class="line after"><span class="ws"> </span>self.init_app_in_ctx()</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>self.post_init()</pre></div> </div> <li><div class="frame" id="frame-140403735152512"> <h4>File <cite class="filename">"/app/superset/app.py"</cite>, line <em class="line">207</em>, in <code class="function">configure_jinja_context</code></h4> <div class="source "><pre class="line before"><span class="ws"> </span>appbuilder.security_manager_class = custom_sm</pre> <pre class="line before"><span class="ws"> </span>appbuilder.update_perms = False</pre> <pre class="line before"><span class="ws"> </span>appbuilder.init_app(self.flask_app, db.session)</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>def configure_jinja_context(self):</pre> <pre class="line current"><span class="ws"> </span>jinja_context_manager.init_app(self.flask_app)</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>def configure_middlewares(self):</pre> <pre class="line after"><span class="ws"> </span>if self.config["ENABLE_CORS"]:</pre> <pre class="line after"><span class="ws"> </span>from flask_cors import CORS</pre> <pre class="line after"><span class="ws"></span> </pre></div> </div> <li><div class="frame" id="frame-140403735152568"> <h4>File <cite class="filename">"/app/superset/extensions.py"</cite>, line <em class="line">47</em>, in <code class="function">init_app</code></h4> <div class="source "><pre class="line before"><span class="ws"> </span>"timedelta": timedelta,</pre> <pre class="line before"><span class="ws"> </span>"uuid": uuid,</pre> <pre class="line before"><span class="ws"> </span>}</pre> <pre class="line before"><span class="ws"></span> </pre> <pre class="line before"><span class="ws"> </span>def init_app(self, app):</pre> <pre class="line current"><span class="ws"> </span>self._base_context = self._base_context.update(</pre> <pre class="line after"><span class="ws"> </span>app.config["JINJA_CONTEXT_ADDONS"]</pre> <pre class="line after"><span class="ws"> </span>)</pre> <pre class="line after"><span class="ws"></span> </pre> <pre class="line after"><span class="ws"> </span>@property</pre> <pre class="line after"><span class="ws"> </span>def base_context(self):</pre></div> </div> </ul> <blockquote>AttributeError: 'NoneType' object has no attribute 'update'</blockquote> </div> <div class="plain"> <form action="/?__debugger__=yes&cmd=paste" method="post"> <p> <input type="hidden" name="language" value="pytb"> This is the Copy/Paste friendly version of the traceback. <span class="pastemessage">You can also paste this traceback into a <a href="https://gist.github.com/";>gist</a>: <input type="submit" value="create paste"></span> </p> <textarea cols="50" rows="10" name="code" readonly>Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 184, in find_app_by_string app = call_factory(script_info, attr, args) File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 119, in call_factory return app_factory() File "/app/superset/app.py", line 65, in create_app raise ex File "/app/superset/app.py", line 58, in create_app app_initializer.init_app() File "/app/superset/app.py", line 163, in init_app self.configure_jinja_context() File "/app/superset/app.py", line 207, in configure_jinja_context jinja_context_manager.init_app(self.flask_app) File "/app/superset/extensions.py", line 47, in init_app self._base_context = self._base_context.update( AttributeError: 'NoneType' object has no attribute 'update'</textarea> </form> </div> <div class="explanation"> The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error. <span class="nojavascript"> If you enable JavaScript you can also use additional features such as code execution (if the evalex feature is enabled), automatic pasting of the exceptions and much more.</span> </div> <div class="footer"> Brought to you by <strong class="arthur">DON'T PANIC</strong>, your friendly Werkzeug powered traceback interpreter. </div> </div> <div class="pin-prompt"> <div class="inner"> <h3>Console Locked</h3> <p> The console is locked and needs to be unlocked by entering the PIN. You can find the PIN printed out on the standard output of your shell that runs the server. <form> <p>PIN: <input type=text name=pin size=14> <input type=submit name=btn value="Confirm Pin"> </form> </div> </div> </body> </html> <!-- Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 184, in find_app_by_string app = call_factory(script_info, attr, args) File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 119, in call_factory return app_factory() File "/app/superset/app.py", line 65, in create_app raise ex File "/app/superset/app.py", line 58, in create_app app_initializer.init_app() File "/app/superset/app.py", line 163, in init_app self.configure_jinja_context() File "/app/superset/app.py", line 207, in configure_jinja_context jinja_context_manager.init_app(self.flask_app) File "/app/superset/extensions.py", line 47, in init_app self._base_context = self._base_context.update( AttributeError: 'NoneType' object has no attribute 'update' --> ``` </p>
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