| From: | Daniel Gustafsson <daniel(at)yesql(dot)se> | 
|---|---|
| To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> | 
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Onder Kalaci <onder(at)citusdata(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> | 
| Subject: | Re: [HACKERS] Optional message to user when terminating/cancelling backend | 
| Date: | 2018-08-11 22:17:59 | 
| Message-ID: | CB576655-AF5D-4EDD-827F-88EE39CFF32A@yesql.se | 
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| Lists: | pgsql-hackers | 
> On 6 Aug 2018, at 09:47, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
> 
> Has there been any consideration to encodings?
Thats a good point, no =/
> What happens if the message contains non-ASCII characters, and the sending backend is connected to database that uses a different encoding than the backend being signaled?
In the current state of the patch, instead of the message you get:
    FATAL: character with byte sequence 0xe3 0x82 0xbd in encoding "UTF8" has
           no equivalent in encoding “ISO_8859_5"
Thats clearly not good enough, but I’m not entirely sure what would be the best
way forward.  Restrict messages to only be in SQL_ASCII?  Store the encoding of
the message and check the encoding of the receiving backend before issuing it
for a valid conversion, falling back to no message in case there is none?
Neither seems terribly appealing, do you have any better suggestions?
cheers ./daniel
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