Capistrano3 - Delete failed release on deploy:failed - capistrano

Question

I'm using Capistrano 3. How can I delete failed releases on deploy:failed without writing my own task? The point is that failed releases stay in the releases directory and accidentally I can rollback to broken release by typing cap deploy:rollback
UPD:
For now I'm using this task but still looking for a better solution.
namespace :deploy do
desc 'Delete failed release'
task :rm_failed do
on roles(:all) do
execute(:rm, "-rf #{release_path}")
end
end
end
after 'deploy:failed', 'deploy:rm_failed'

Answer 1

My limited experience with Capistrano indicates that there is no built-in mechanism to perform the action you want. Writing a task that is triggered using deploy:failed is the proper way to handle the situation as it can be application specific.
A better solution that addresses the potential for deploy:clean to fail after the deploy:symlink:release --
namespace :deploy do
desc 'Delete failed release'
task :rm_failed do
on roles(:web) do
if test "[ -d #{current_path} ]"
current_release = capture(:readlink, current_path).to_s
if current_release != release_path.to_s
execute :rm, "-rf #{release_path}"
end
end
end
end
end
after 'deploy:failed', 'deploy:rm_failed'
The Capistrano page on rollbacks has a larger discussion on handling rollbacks and failures.