On Tue, Nov 28, 2006 at 06:01:43PM +0200, Andrus wrote:
> 5. Server has *only* 5432 port open.
>
> pg_read_file() can read only text files and is restricted only to
> superusers.
>
> How to add a function pg_read_backup() to Postgres which creates and
> returns backup file with download speed ?
You could use an *un*trusted procedural language to create a
function to binary-read the backup from disk and return it
as a bytea field. Not sure how efficient that is, though.
You could then simply do
select get_backup();
If you allow for parameters you could make it return certain
backups based on, perhaps, timestamp of creation.
select list_available_backups();
might complete the suite of tools.
One could then always use some hashing tools (mhash with PG
bindings comes to mind) to verify whether a backup has arrived safely:
on local machine: ripemd160(backupfile)
select yhash.ripemd160(get_backup()) = <local hash>;
Karsten
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