Ok this makes it much clearer.
For this particular use, I have a lots of small tasks which require DB
connection, but having a reconnection overhead for each task is just not
acceptable.
If it's the only possible way maybe Minon is not the right tool.
I'm a bit disapointed because except for this problem, it would be an
excellent solution.
Thanks
On Thursday, 16 June 2016 17:09:12 UTC+2, Joel Berger wrote:
>
> Minion tasks are performed in forks to protect the integrity of the worker
> process. Once the task is forked (or indeed after any fork) there must be a
> new connection to the database, this is the only possible way to do
> anything sane.
>
> On Thursday, June 16, 2016 at 3:53:03 AM UTC-5, Yves wrote:
>>
>> I'm trying to implement a Minon worker that needs access to a database
>> via DBI.
>>
>> Here is the code that I use :
>>
>>
>> use Mojolicious::Lite;
>>
>> plugin Minion => { SQLite => 'sqlite:test.db' };
>>
>> helper dbh => sub {
>> my $dbh = DBI->connect("dbi:Oracle:somedb", 'someuser',
>> 'somepasswd');
>> return $dbh;
>> };
>>
>> app->minion->add_task( mytask => \&mytask );
>>
>> sub mytest {
>>
>> my ($job, $arg) = @_;
>>
>> my $dbh = $job->app->dbh;
>> my ($time) = $dbh->selectrow_array('select sysdate from dual');
>> $job->finish('documentation generation done');
>>
>> }
>> app->start;
>>
>>
>> The problem that I have, is that the connection to the database is
>> closed/reopened on every task execution, which is very slow, and not the
>> behavior that I expect.
>>
>> Using the same dbh helper on a Mojolicious app (not within minon task)
>> works fine and opens one connection per worker.
>>
>> I've already tried various setups with DBI's InactiveDestroy parameter or
>> using DBIx::Connector but no success so far.
>>
>
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