Re: [ADMIN] Conditional row grained replication with DBMirror - Mailing list pgsql-general

Sure, send the patches to the patches list and we will get them applied.
I am not sure if I can get them into 7.4.  It depends if the dbmirror
author can review them.

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Achilleus Mantzios wrote:
>
>
> I made a modification on  DBMirror.pl,
> an addition in the slavedatabase.conf file,
> and added another replication table "specialtables".
>
> The goal was to have a way of controlling
> when a row of table (if the table is present in specialtables),
> will be mirrored to the remote slave.
>
> Lets assume, we have a bank's central IT DEPT master DB
> and some branches abroad.
>
> Rows in some tables (e.g. personel, branches, statistics on transactions,
> etc...)
> have no reason to be replicated to all sites, but only
> those sites that these rows refer to:
>
> E.G.
> we have
> test=# \d personel
>             Table "public.personel"
>     Column     |          Type          | Modifiers
> ---------------+------------------------+-----------
>  id       | integer | not null
>  name | character varying(20)  |
>  branchid | integer  |
> test=#
>
> or
> test=# \d branch
>             Table "public.personel"
>     Column     |          Type          | Modifiers
> ---------------+------------------------+-----------
>  id       | integer | not null
>  country | character varying(20)  |
>  address | text  |
> test=#
>
> And we require that insert, updates on table branch with id = 1
> go only to remote site (the ip of) branch  1,
> and that inserts,updates on personel with branchid = 2,
> in the same fashion, go only to (the ip of) branch 2.
>
> I retain the table specialtables
> test=# \d specialtables
>             Table "public.specialtables"
>     Column     |          Type          | Modifiers
> ---------------+------------------------+-----------
>  tblname       | character varying(100) | not null
>  siteidkeyname | character varying(20)  |
> Indexes: specialtables_pkey primary key btree (tblname)
>
> test=#
>
> in which for each conditional table, the corresponding
> column name (the value of siteidkeyname) is given
> which indicates against which column in the PendingData.Data
> column is to be examined for equality against the site id.
>
> The site id for each slave is defined in an additional field
> in slaveInfo struct in slavedatabase.conf.
>
> Please tell me if i should send the patches
> to DBMirror.pl, MirrorSetup.sql, and slavedatabase.conf.
>
> --
> ==================================================================
> Achilleus Mantzios
> S/W Engineer
> IT dept
> Dynacom Tankers Mngmt
> Nikis 4, Glyfada
> Athens 16610
> Greece
> tel:    +30-210-8981112
> fax:    +30-210-8981877
> email:  achill at matrix dot gatewaynet dot com
>         mantzios at softlab dot ece dot ntua dot gr
>
>
>
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