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Support for upcoming script/spawner

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1840 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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1 parent 45804e2 commit 1ce158ac8c58b2b815b6094087275c2162df94d4 @dhh dhh committed Jul 16, 2005
Showing with 62 additions and 0 deletions.
  1. +62 −0 railties/lib/program_process.rb
@@ -0,0 +1,62 @@
+class ProgramProcess
+ class << self
+ def process_keywords(action, *keywords)
+ processes = keywords.collect { |keyword| find_by_keyword(keyword) }.flatten
+
+ if processes.empty?
+ puts "Couldn't find any process matching: #{keywords.join(" or ")}"
+ else
+ processes.each do |process|
+ puts "#{action.humanize}ing #{process}"
+ process.send(action)
+ end
+ end
+ end
+
+ def find_by_keyword(keyword)
+ process_lines_with_keyword(keyword).split("\n").collect { |line|
+ next if line.include?("inq") || line.include?("ps -ax") || line.include?("grep")
+ pid, *command = line.split
+ new(pid, command.join(" "))
+ }.compact
+ end
+
+ private
+ def process_lines_with_keyword(keyword)
+ `ps -ax -o 'pid command' | grep #{keyword}`
+ end
+ end
+
+ def initialize(pid, command)
+ @pid, @command = pid, command
+ end
+
+ def find
+ end
+
+ def reload
+ `kill -s HUP #{@pid}`
+ end
+
+ def restart
+ kill
+ `#{@command}`
+ end
+
+ def graceful_restart
+ graceful_kill
+ `#{@command}`
+ end
+
+ def graceful_kill
+ `kill -s TERM #{@pid}`
+ end
+
+ def kill
+ `kill -9 #{@pid}`
+ end
+
+ def to_s
+ "[#{@pid}] #{@command}"
+ end
+end

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