Re: [pgAdmin4][RM#3289] Can't query SQL_ASCII database.

Thanks - patch applied!

On Wed, Jun 20, 2018 at 3:17 PM, Aditya Toshniwal <
aditya(dot)toshniwal(at)enterprisedb(dot)com> wrote:

> Hi Dave,
>
> Attached is the updated patch. (Playing with encodings is not at all fun
> :( )
>
> On Tue, Jun 19, 2018 at 2:23 AM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>
>> Hi
>>
>> On Mon, Jun 18, 2018 at 2:14 PM, Aditya Toshniwal <
>> aditya(dot)toshniwal(at)enterprisedb(dot)com> wrote:
>>
>>> Hi Hackers,
>>>
>>> Attached is the updated patch which includes the fix for Download CSV
>>> fail in SQL_ASCII database, which is RM3250
>>> <https://redmine.postgresql.org/issues/3250>
>>> This should fix RM3289 and RM3250. As they interrelated, sending the
>>> combined patch.
>>> Kindly review.
>>>
>>
>> This is definitely looking better - both view and save now work as
>> expected. However, using the test data the I posted upthread, if I try to
>> edit a value (in this case by adding a couple of chars to the end of the
>> data in row 2) I get:
>>
> It should fix the error.
>
>>
>> 2018-06-18 16:41:40,895: SQL pgadmin: Execute (void) for server #1 -
>> DB:ascii (Query-id: 3093186):
>> UPDATE public.ascii SET
>> data = %(data)s::text WHERE
>> id = '2';
>> 2018-06-18 16:41:41,027: INFO werkzeug: 127.0.0.1 - - [18/Jun/2018
>> 16:41:41] "POST /sqleditor/save/2805058 HTTP/1.1" 500 -
>> 2018-06-18 16:41:41,042: ERROR werkzeug: Error on request:
>> Traceback (most recent call last):
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/serving.py",
>> line 270, in run_wsgi
>> execute(self.server.app)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/serving.py",
>> line 258, in execute
>> application_iter = app(environ, start_response)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1997, in __call__
>> return self.wsgi_app(environ, start_response)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1985, in wsgi_app
>> response = self.handle_exception(e)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1540, in handle_exception
>> reraise(exc_type, exc_value, tb)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1982, in wsgi_app
>> response = self.full_dispatch_request()
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1614, in full_dispatch_request
>> rv = self.handle_user_exception(e)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1517, in handle_user_exception
>> reraise(exc_type, exc_value, tb)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1612, in full_dispatch_request
>> rv = self.dispatch_request()
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask/app.py",
>> line 1598, in dispatch_request
>> return self.view_functions[rule.endpoint](**req.view_args)
>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/flask_login.py",
>> line 792, in decorated_view
>> return func(*args, **kwargs)
>> File "/Users/dpage/git/pgadmin4/web/pgadmin/tools/sqleditor/__init__.py",
>> line 776, in save
>> default_conn)
>> File "/Users/dpage/git/pgadmin4/web/pgadmin/tools/sqleditor/command.py",
>> line 829, in save
>> item['sql'], item['data'])
>> File "/Users/dpage/git/pgadmin4/web/pgadmin/utils/driver/psycopg2/connection.py",
>> line 975, in execute_void
>> self.__internal_blocking_execute(cur, query, params)
>> File "/Users/dpage/git/pgadmin4/web/pgadmin/utils/driver/psycopg2/connection.py",
>> line 629, in __internal_blocking_execute
>> cur.execute(query, params)
>> File "/Users/dpage/git/pgadmin4/web/pgadmin/utils/driver/psycopg2/cursor.py",
>> line 176, in execute
>> return _cursor.execute(self, query, params)
>> UnicodeEncodeError: 'ascii' codec can't encode characters in position
>> 19-21: ordinal not in range(128)
>>
>>
>>>
>>> On Fri, Jun 15, 2018 at 2:33 PM, Aditya Toshniwal <
>>> aditya(dot)toshniwal(at)enterprisedb(dot)com> wrote:
>>>
>>>> Hi Dave,
>>>>
>>>> On Fri, Jun 15, 2018 at 2:08 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>>
>>>>> Hi
>>>>>
>>>>> On Thu, Jun 14, 2018 at 7:05 AM, Aditya Toshniwal <
>>>>> aditya(dot)toshniwal(at)enterprisedb(dot)com> wrote:
>>>>>
>>>>>> I am sorry I missed the attachment. :(
>>>>>> PFA.
>>>>>>
>>>>>
>>>>> It looks like the encoding names are getting munged somewhere. I see
>>>>> you've accounted for that to some degree in connection.py (you have both
>>>>> SQL_ASCII/MULE_INTERNAL and SQLASCII/MULEINTERNAL), however it doesn't seem
>>>>> to be enough as I'm getting the following error when trying to download CSV
>>>>> from the query tool. Can we ensure that conn.encoding contains an un-munged
>>>>> value at all times, or is that coming from psycopg2?
>>>>>
>>>> ​That is done by pyscopg2 and conn.encoding is a psycopg2 connection
>>>> property.​
>>>>
>>>>
>>>>>
>>>>> 2018-06-15 09:32:28,799: INFO werkzeug: 127.0.0.1 - - [15/Jun/2018
>>>>> 09:32:28] "GET /sqleditor/query_tool/download
>>>>> /2732923?query=SELECT%20*%20FROM%20public.sql_ascii%0AORDER%
>>>>> 20BY%20id%20ASC%20&filename=sql_ascii.csv HTTP/1.1" 500 -
>>>>> 2018-06-15 09:32:28,801: ERROR werkzeug: Error on request:
>>>>> Traceback (most recent call last):
>>>>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/serving.py",
>>>>> line 270, in run_wsgi
>>>>> execute(self.server.app)
>>>>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/serving.py",
>>>>> line 260, in execute
>>>>> for data in application_iter:
>>>>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/wsgi.py",
>>>>> line 870, in __next__
>>>>> return self._next()
>>>>> File "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/werkzeug/wrappers.py",
>>>>> line 82, in _iter_encoded
>>>>> for item in iterable:
>>>>> File "/Users/dpage/git/pgadmin4/web/pgadmin/utils/driver/psycopg2/connection.py",
>>>>> line 752, in gen
>>>>> column_name = column_name.decode(conn_encoding)
>>>>> LookupError: unknown encoding: SQLASCII
>>>>>
>>>>
>>>> ​This is because there is code bug here. Below is code used to decode a
>>>> column name. Connection encoding and python encoding are two different
>>>> things. Python does not know what SQLASCII is. This will work with UTF-8
>>>> because python has decoder with same name. I tried to download CSV with the
>>>> original code without changes and it fails there too. I will fix this and
>>>> will send the updated patch. I should have checked this.
>>>> conn_encoding = cur.connection.encoding
>>>> column_name = column_name.decode(conn_encoding)​
>>>>
>>>>
>>>>>
>>>>> --
>>>>> Dave Page
>>>>> Blog: http://pgsnake.blogspot.com
>>>>> Twitter: @pgsnake
>>>>>
>>>>> EnterpriseDB UK: http://www.enterprisedb.com
>>>>> The Enterprise PostgreSQL Company
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Thanks and Regards,
>>>> Aditya Toshniwal
>>>> Software Engineer | EnterpriseDB Software Solutions | Pune
>>>> "Don't Complain about Heat, Plant a tree"
>>>>
>>>
>>>
>>>
>>> --
>>> Thanks and Regards,
>>> Aditya Toshniwal
>>> Software Engineer | EnterpriseDB Software Solutions | Pune
>>> "Don't Complain about Heat, Plant a tree"
>>>
>>
>>
>>
>> --
>> Dave Page
>> Blog: http://pgsnake.blogspot.com
>> Twitter: @pgsnake
>>
>> EnterpriseDB UK: http://www.enterprisedb.com
>> The Enterprise PostgreSQL Company
>>
>
>
>
> --
> Thanks and Regards,
> Aditya Toshniwal
> Software Engineer | EnterpriseDB Software Solutions | Pune
> "Don't Complain about Heat, Plant a tree"
>

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company