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Contents
require 'capistrano/configuration'
# Overrides a method in Capistrano::Configurations::Connections that has multiple threads writing to a shared hash.
# While that shared hash is a thread local variable, they the thread is passed as an argument, so all the connection
# threads are trying to update it at the same time. This has been observed to cause problems where servers will end
# up losing their connection objects, messing up all future SSH operations and eventually leading to an error about
# calling a method on a nil object.
#
# We shouldn't make a habit of patching Capistrano in Rubber. But since Capistrano 2.x is effectively a dead project,
# getting this fixed upstream is extremely unlikely.
module Capistrano
class Configuration
private
MUTEX = Mutex.new
def safely_establish_connection_to(server, thread, failures=nil)
conn = connection_factory.connect_to(server)
MUTEX.synchronize do
thread[:sessions] ||= {}
thread[:sessions][server] ||= conn
end
rescue Exception => err
raise unless failures
failures << { :server => server, :error => err }
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems