Re: Configuring synchronous replication

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Dave Page <dpage(at)pgadmin(dot)org>
Cc: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Thom Brown <thom(at)linux(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Configuring synchronous replication
Date: 2010-09-22 11:57:00
Message-ID: 4C99EF0C.6090906@dunslane.net
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On 09/22/2010 07:20 AM, Dave Page wrote:
> On Wed, Sep 22, 2010 at 12:07 PM, Andrew Dunstan<andrew(at)dunslane(dot)net> wrote:
>>
>> On 09/22/2010 04:54 AM, Dave Page wrote:
>>> On Wed, Sep 22, 2010 at 9:47 AM, Andrew Dunstan<andrew(at)dunslane(dot)net>
>>> wrote:
>>>> The ini file format is not flexible enough, IMNSHO. If we're going to
>>>> adopt
>>>> a new config file format it should have these characteristics, among
>>>> others:
>>>>
>>>> well known (let's not invent a new one)
>>>> supports hierarchical structure
>>>> reasonably readable
>>> The ini format meets all of those requirements - and it's certainly
>>> far more readable/editable than XML and friends.
>>>
>> No, it's really not hierarchical. It only has goes one level deep.
> I guess pgAdmin/wxWidgets are broken then :-)
>
> [Servers]
> Count=5
> [Servers/1]
> Server=localhost
> Description=PostgreSQL 8.3
> ServiceID=
> DiscoveryID=/PostgreSQL/8.3
> Port=5432
> StorePwd=true
> Restore=false
> Database=postgres
> Username=postgres
> LastDatabase=postgres
> LastSchema=public
> DbRestriction=
> Colour=#FFFFFF
> SSL=0
> Group=PPAS
> Rolename=
> [Servers/1/Databases]
> [Servers/1/Databases/postgres]
> SchemaRestriction=
> [Servers/1/Databases/pphq]
> SchemaRestriction=
> [Servers/1/Databases/template_postgis]
> SchemaRestriction=
> [Servers/2]
> ...
> ...

Well, that's not what I'd call a hierarchy, in any sane sense. I've
often had to dig all over the place in ini files to find related bits of
information in disparate parts of the file. Compared to a meaningful
tree structure this is utterly woeful. In a sensible hierarchical
format, all the information relating to, say, Servers/1 above, wopuld be
under a stanza with that heading, instead of having separate and
unnested stanzas like Servers/1/Databases/template_postgis.

If you could nest stanzas in ini file format it would probably do, but
you can't, leading to the above major ugliness.

cheers

andrew

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