Class: Ocular::DSL::EventBase
- Inherits:
-
Object
- Object
- Ocular::DSL::EventBase
- Defined in:
- lib/ocular/event/eventbase.rb
Defined Under Namespace
Classes: Results
Instance Attribute Summary collapse
-
#last_run ⇒ Object
Returns the value of attribute last_run.
-
#proxy ⇒ Object
Returns the value of attribute proxy.
Instance Method Summary collapse
- #__call(context, callback) ⇒ Object
- #exec(context, do_fork = self.proxy.do_fork) ⇒ Object
- #exec_fork(context) ⇒ Object
- #exec_nofork(context) ⇒ Object
-
#initialize(proxy, &block) ⇒ EventBase
constructor
A new instance of EventBase.
Constructor Details
#initialize(proxy, &block) ⇒ EventBase
Returns a new instance of EventBase.
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# File 'lib/ocular/event/eventbase.rb', line 17 def initialize(proxy, &block) @callback = block @proxy = proxy end |
Instance Attribute Details
#last_run ⇒ Object
Returns the value of attribute last_run.
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# File 'lib/ocular/event/eventbase.rb', line 15 def last_run @last_run end |
#proxy ⇒ Object
Returns the value of attribute proxy.
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# File 'lib/ocular/event/eventbase.rb', line 15 def proxy @proxy end |
Instance Method Details
#__call(context, callback) ⇒ Object
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# File 'lib/ocular/event/eventbase.rb', line 79 def __call(context, callback) # we use this trickery to workaround the LocalJumpError so that we can use return context.define_singleton_method(:_, &callback) p = context.method(:_).to_proc reply = p.call() if context.respond_to?(:exec_wrapper) return context.exec_wrapper(reply) else return reply end end |
#exec(context, do_fork = self.proxy.do_fork) ⇒ Object
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# File 'lib/ocular/event/eventbase.rb', line 22 def exec(context, do_fork = self.proxy.do_fork) start = Time.now begin context.proxy = self.proxy if do_fork return exec_fork(context) else return exec_nofork(context) end ensure ::Ocular.logger.debug "exec for context #{context} took #{start}" context.log_timing("execution_time", start) @last_run = context end end |
#exec_fork(context) ⇒ Object
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# File 'lib/ocular/event/eventbase.rb', line 38 def exec_fork(context) reader, writer = IO::pipe child_pid = fork do reader.close r = Results.new context.after_fork() begin r.response = __call(context, @callback) rescue Exception => error r.error = error end begin Marshal.dump(r, writer) rescue TypeError => e ::Ocular.logger.error "TypeError when trying to marshal event handler return value. Reason: #{e}" ::Ocular.logger.error "This is usually because you forgot that the last function return value is returned from the handler function. The current type of the returned value is #{r.response.class}. Please make sure your handler returns a proper value which doesn't reference any sockets or otherwise complex unserializable objects." ::Ocular.logger.error "The value of the returned value is :#{r.response.pretty_inspect}" end writer.close end writer.close data = reader.read r = Marshal.load(data) reader.close Process.wait(child_pid) if r.error raise r.error end return r.response end |
#exec_nofork(context) ⇒ Object
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# File 'lib/ocular/event/eventbase.rb', line 75 def exec_nofork(context) return __call(context, @callback) end |