class DRb::ExtServManager
Attributes
uri[RW]
Public Class Methods
command()
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# File lib/drb/extservm.rb, line 17 def self.command @@command end
command=(cmd)
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# File lib/drb/extservm.rb, line 21 def self.command=(cmd) @@command = cmd end
new()
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Calls superclass method
MonitorMixin.new
# File lib/drb/extservm.rb, line 25 def initialize super() @cond = new_cond @servers = {} @waiting = [] @queue = Queue.new @thread = invoke_thread @uri = nil end
Public Instance Methods
regist(name, ro)
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# File lib/drb/extservm.rb, line 47 def regist(name, ro) synchronize do @servers[name] = ro @cond.signal end self end
service(name)
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# File lib/drb/extservm.rb, line 36 def service(name) synchronize do while true server = @servers[name] return server if server && server.alive? invoke_service(name) @cond.wait end end end
unregist(name)
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# File lib/drb/extservm.rb, line 55 def unregist(name) synchronize do @servers.delete(name) end end
Private Instance Methods
invoke_service(name)
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# File lib/drb/extservm.rb, line 71 def invoke_service(name) @queue.push(name) end
invoke_service_command(name, command)
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# File lib/drb/extservm.rb, line 75 def invoke_service_command(name, command) raise "invalid command. name: #{name}" unless command synchronize do return if @servers.include?(name) @servers[name] = false end uri = @uri || DRb.uri if command.respond_to? :to_ary command = command.to_ary + [uri, name] pid = spawn(*command) else pid = spawn("#{command} #{uri} #{name}") end th = Process.detach(pid) th[:drb_service] = name th end
invoke_thread()
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# File lib/drb/extservm.rb, line 62 def invoke_thread Thread.new do while true name = @queue.pop invoke_service_command(name, @@command[name]) end end end