>
> We have an an embperl application running on embperl 1.2b7, mod_perl
> 1.21, Apache 1.3.6 . Its .epl files use an in-house Perl module called
> Axe.pm by calling
> [! use Axe; !]
>
> This module's BEGIN block tries to connect to a database:
> $Axe::Connection::dbh = DBI->connect(bunch of parameters) or
> die('Axe::Connection cannot connect to Oracle!');
>
> Everything works most of the time. Sometimes this DB connection fails
> in one of the Apache child processes. But that Apache process continues
> to run despite the die(). Whenever the embperl application happens to
> run in that Apache instance, it has all kinds of problems because the
> required module didn't initialize successfully.
>
> 1. How can I get the failure in the BEGIN module to kill that Apache
> process? Calling die() and exit from embperl don't kill it.
>
You can try CORE::exit (), but this is really the hard way. Apache doesn't
have any chance to cleanup.
"die" in Embperl exits the current block, "exit" the current page
>
> 2. I suspect there's a better way to do this, by loading the Axe module
> in Apache's startup.pl. I believe the original developer tried that,
> and had problems because we wanted each child Apache process to have its
> own connection to the database. Should I instead use the Apache::DBI
> wrapper as suggested in the mod_perl docs, or are there even better ways
> to do per-child initialization with embperl?
>
Normaly databases only works if you have a database connection per child. If
you want to make per child initialisation, you can use mod_perl's
PerlChildInitHandler. The other solutions, which I normaly use, is to always
connect to the database, but use Apache::DBI. Apache::DBI will keep track
that the connection is setup only the first time, further calls to connect
will simply get the already open database handle.
http://perl.apache.org/guide/databases.html may give you further ideas
Gerald
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Internetconnect * Webserver/-design/-datenbanken * Consulting
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