From: Jim Weirich <jim@...>
Date: 2006-11-18T04:48:22+09:00
Subject: Re: When Rake goes "Ache!"

Robert James wrote:
> What is the best way to set something to do when a Rake task fails?
> 
> I'd like something like:
> 
> task :migrate_safely => [:backup, :migrate] do
>   rescue
>     if :backup
>       :restore
>     end
>   end
> end
> 
> Is there a way to do anything similar?

Does something like this work ...


$migrate_failed = false

task :default => :migrate_safely

task :backup do
  puts "Backing Up"
end

task :migrate do
  begin
    puts "Migrating"
    fail "Oops"
  rescue
    $migrate_failed = true
  end
end

task :restore do
  puts "Restoring"
end

task :migrate_safely => [:backup, :migrate] do
  Rake::Task[:restore].invoke if $migrate_failed
  puts "Migrated Safely"
end

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