Re: [pgAdmin4][Patch]: Adding connection status in Query tool

From: Murtuza Zabuawala <murtuza(dot)zabuawala(at)enterprisedb(dot)com>
To: Dave Page <dpage(at)pgadmin(dot)org>
Cc: Harshal Dhumal <harshal(dot)dhumal(at)enterprisedb(dot)com>, Chethana Kumar <chethana(dot)kumar(at)enterprisedb(dot)com>, pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org>
Subject: Re: [pgAdmin4][Patch]: Adding connection status in Query tool
Date: 2018-01-12 14:10:11
Message-ID: CAKKotZQs_LRxk3Z5ik3KcspA2BnkUXN3OQS0VSgKmwS7WoFELw@mail.gmail.com
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​Hi Dave,

PFA updated patch with additional checks to prevent unnecessary ​polling
added as suggested.
Please review.

--
Regards,
Murtuza Zabuawala
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

On Thu, Jan 11, 2018 at 2:33 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:

>
>
> On Thu, Jan 11, 2018 at 7:00 AM, Harshal Dhumal <
> harshal(dot)dhumal(at)enterprisedb(dot)com> wrote:
>
>> On Thu, Jan 11, 2018 at 12:06 PM, Murtuza Zabuawala <
>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>
>>> User can open Query tool in new browser window where we'll not have
>>> wcDocker panel.
>>>
>>
>> In that case we can use window onfocus and onblur events
>> <http://www.thefutureoftheweb.com/blog/detect-browser-window-focus>.
>> In sqleditor there are cases where we've written conditional code based
>> on whether sqleditor is opened in new window or not.
>>
>
> This is a great suggestion (the idea in general). We need to make this
> happen - it'll go a long way to minimising our concerns about the amount of
> polling.
>
>
>>
>>
>> On Thu, Jan 11, 2018 at 12:00 PM, Harshal Dhumal <
>>> harshal(dot)dhumal(at)enterprisedb(dot)com> wrote:
>>>
>>>> Murtuza, I think we should only poll if sqleditor/datagrid is visible.
>>>> We've *wcDocker.EVENT.VISIBILITY_CHANGED *event when panel visibility
>>>> changes.
>>>>
>>>> --
>>>> *Harshal Dhumal*
>>>> *Sr. Software Engineer*
>>>>
>>>> EnterpriseDB India: http://www.enterprisedb.com
>>>> The Enterprise PostgreSQL Company
>>>>
>>>> On Wed, Jan 10, 2018 at 1:55 PM, Murtuza Zabuawala <
>>>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>
>>>>> Hi Dave,
>>>>>
>>>>> PFA updated patch.
>>>>>
>>>>> On Tue, Jan 9, 2018 at 7:57 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>>>
>>>>>> Hi
>>>>>>
>>>>>> On Tue, Jan 9, 2018 at 6:33 AM, Murtuza Zabuawala <
>>>>>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>>>
>>>>>>> Hi Dave,
>>>>>>>
>>>>>>> Please find updated patch.
>>>>>>>
>>>>>>
>>>>>> I turned off the status option, but polling is still happening. This
>>>>>> should definitely stop! :-)
>>>>>>
>>>>> ​Fixed typo in variable.
>>>>>
>>>>> Can you also reverse the enable/disable switch and the interval
>>>>>> setting on the preferences page? I think Enable/Disable should be at the
>>>>>> top, and be followed by the interval.
>>>>>> ​
>>>>>>
>>>>> Fixed.
>>>>> ​
>>>>> But just a heads up we won't be able to put '?' after 'Connection
>>>>> status'​ eg: '
>>>>> Connection status
>>>>> ​?'​
>>>>> ​
>>>>> ​Then string sorting again puts it after 'Connection status refresh
>>>>> rate' ​:)
>>>>>
>>>>>> ​
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> On Mon, Jan 8, 2018 at 7:21 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Jan 8, 2018 at 1:24 PM, Murtuza Zabuawala <
>>>>>>>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>>>>>
>>>>>>>>> Hi Dave,
>>>>>>>>>
>>>>>>>>> PFA updated patch.
>>>>>>>>>
>>>>>>>>> On Mon, Jan 8, 2018 at 5:11 PM, Dave Page <dpage(at)pgadmin(dot)org>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Hi
>>>>>>>>>>
>>>>>>>>>> On Fri, Jan 5, 2018 at 8:49 AM, Murtuza Zabuawala <
>>>>>>>>>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi Dave,
>>>>>>>>>>>
>>>>>>>>>>> PFA updated patch,
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Wed, Jan 3, 2018 at 10:44 PM, Dave Page <dpage(at)pgadmin(dot)org>
>>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Hi
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Dec 28, 2017 at 9:38 AM, Murtuza Zabuawala <
>>>>>>>>>>>> murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>
>>>>>>>>>>>>> PFA updated patch based on new design suggested by Chethana.
>>>>>>>>>>>>> The patch also includes some misc fixes related to object
>>>>>>>>>>>>> validation.
>>>>>>>>>>>>> RM#2475
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> This seems much nicer, but I still think there are some tweaks
>>>>>>>>>>>> to make:
>>>>>>>>>>>>
>>>>>>>>>>>> 1) If I open a query tool, and then stop the application
>>>>>>>>>>>> server, the icon is updated to show the broken connection. However, unless
>>>>>>>>>>>> I execute a query in the query tool before the server is shut down, the
>>>>>>>>>>>> connection status won't recover when the server is restarted. If I do run a
>>>>>>>>>>>> query first (SELECT 1; will do), then the connection status will recover.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> I have logged​
>>>>>>>>>>> ​
>>>>>>>>>>> https://redmine.postgresql.org/issues/2983
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> 2) I think the "connected" icon should be in $primary-blue
>>>>>>>>>>>> (#2c76b4). The green is ugly and not overly easy to read. It's also
>>>>>>>>>>>> distracting as it catches the eye, which the default, non-error state
>>>>>>>>>>>> should not do.
>>>>>>>>>>>>
>>>>>>>>>>> ​Fixed​
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Much better.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> 3) I'm not overly happy with the the status text popover. After
>>>>>>>>>>>> some thought, I think it's because there are no visual clues that you
>>>>>>>>>>>> should click on the icon to see it - and Karen seems to be of a similar
>>>>>>>>>>>> opinion. Can we put a small marker there, perhaps a triangle on the
>>>>>>>>>>>> bottom-right, like you get on a spreadsheet cell if you add a comment/note?
>>>>>>>>>>>> We should also have a hotkey and I guess a tooltip, e.g. "Connection status
>>>>>>>>>>>> Ctrl+Alt+S" or similar.
>>>>>>>>>>>>
>>>>>>>>>>> ​Fixed​
>>>>>>>>>>> , added accesskey *'T'* for TX status tooltip shortcut as 'S'
>>>>>>>>>>> is already taken for Save file option
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Hmm - having seen it, I don't think the marker helps us.
>>>>>>>>>>
>>>>>>>>>> Can you remove it, and fix the tooltip (which doesn't seem to
>>>>>>>>>> work)? If we always have the tooltip say "Connection status Ctrl+Alt+T" (or
>>>>>>>>>> whatever is appropriate for the platform/browser), then that should give
>>>>>>>>>> the user enough hint to click.
>>>>>>>>>>
>>>>>>>>> ​
>>>>>>>>> Fixed​.
>>>>>>>>> I have removed the marker & added tooltip instead but it is not
>>>>>>>>> possible to add specific shortcut keys in tooltip because accesskey may
>>>>>>>>> vary depending on OS & browser.
>>>>>>>>> ​Ref: ​
>>>>>>>>> https://www.w3schools.com/tags/att_global_accesskey.asp
>>>>>>>>>
>>>>>>>>
>>>>>>>> That's better - though I think the tool tip is better as something
>>>>>>>> like:
>>>>>>>>
>>>>>>>> Connection status (click for details) (<accesskey>+T)
>>>>>>>>
>>>>>>>> I'm still not overly happy with all the polling that's going on
>>>>>>>> though. It's a lot of requests, especially with multiple QTs open. I think
>>>>>>>> we need to be able to disable the feature entirely through a switch in the
>>>>>>>> Preferences. In that case, no icon would be shown, and polling would be
>>>>>>>> disabled - i.e. everything would be as it is now.
>>>>>>>>
>>>>>>>> What do you think?
>>>>>>>>
>>>>>>> ​Fixed
>>>>>>> Made it configurable & set default polling time to 10sec.​
>>>>>>>
>>>>>>>
>>>>>>> ​Please review.​
>>>>>>>
>>>>>>>
>>>>>>>> --
>>>>>>>> Dave Page
>>>>>>>> Blog: http://pgsnake.blogspot.com
>>>>>>>> Twitter: @pgsnake
>>>>>>>>
>>>>>>>> EnterpriseDB UK: http://www.enterprisedb.com
>>>>>>>> The Enterprise PostgreSQL Company
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Dave Page
>>>>>> Blog: http://pgsnake.blogspot.com
>>>>>> Twitter: @pgsnake
>>>>>>
>>>>>> EnterpriseDB UK: http://www.enterprisedb.com
>>>>>> The Enterprise PostgreSQL Company
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
>
> --
> Dave Page
> Blog: http://pgsnake.blogspot.com
> Twitter: @pgsnake
>
> EnterpriseDB UK: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>

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