DESCRIPTION
With this module you can define transactions and rollback scenarios on failure.SYNOPSIS
task "do-something", "server01", sub {
transaction {
on_rollback {
rmdir "/tmp/mydata";
};
mkdir "/tmp/mydata";
upload "files/myapp.tar.gz", "/tmp/mydata";
run "cd /tmp/mydata; tar xzf myapp.tar.gz";
if($? != 0) { die("Error extracting myapp.tar.gz"); }
};
};
EXPORTED FUNCTIONS
transaction($codeRef)
Start a transaction for $codeRef. If $codeRef dies it will rollback the transaction.
task "deploy", group => "frontend", sub { on_rollback { rmdir "..."; }; deploy "myapp.tar.gz"; }; task "restart_server", group => "frontend", sub { run "/etc/init.d/apache2 restart"; }; task "all", group => "frontend", sub { transaction { do_task [qw/deploy restart_server/]; }; };
on_rollback($codeRef)
This code will be executed if one step in the transaction fails.See transaction.