Module: Redwood::InteractiveLock
- Included in:
- Index
- Defined in:
- lib/sup/interactive_lock.rb
Overview
wrap a nice interactive layer on top of anything that has a #lock method which throws a LockError which responds to #user, #host, #mtim, #pname, and #pid.
Constant Summary collapse
- DELAY =
seconds
5
Instance Method Summary collapse
- #lock_interactively(stream = $stderr) ⇒ Object
- #pluralize(number_of, kind) ⇒ Object
- #time_ago_in_words(time) ⇒ Object
Instance Method Details
#lock_interactively(stream = $stderr) ⇒ Object
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# File 'lib/sup/interactive_lock.rb', line 24 def lock_interactively stream=$stderr begin Index.lock rescue Index::LockError => e stream.puts <<EOS Error: the index is locked by another process! User '#{e.user}' on host '#{e.host}' is running #{e.pname} with pid #{e.pid}. The process was alive as of at least #{time_ago_in_words e.mtime} ago. EOS stream.print "Should I ask that process to kill itself (y/n)? " stream.flush success = if $stdin.gets =~ /^\s*y(es)?\s*$/i stream.puts "Ok, trying to kill process..." begin Process.kill "TERM", e.pid.to_i sleep DELAY rescue Errno::ESRCH # no such process stream.puts "Hm, I couldn't kill it." end stream.puts "Let's try that again." begin Index.lock rescue Index::LockError => e stream.puts "I couldn't lock the index. The lockfile might just be stale." stream.print "Should I just remove it and continue? (y/n) " stream.flush if $stdin.gets =~ /^\s*y(es)?\s*$/i FileUtils.rm e.path stream.puts "Let's try that one more time." begin Index.lock true rescue Index::LockError => e end end end end stream.puts "Sorry, couldn't unlock the index." unless success success end end |
#pluralize(number_of, kind) ⇒ Object
10 |
# File 'lib/sup/interactive_lock.rb', line 10 def pluralize number_of, kind; "#{number_of} #{kind}" + (number_of == 1 ? "" : "s") end |