Class: MQRPC::Operation
- Inherits:
-
Object
- Object
- MQRPC::Operation
- Defined in:
- lib/mqrpc/operation.rb
Overview
A single message operation
-
Takes a callback to call when a message is received
-
Allows you to wait for the operation to complete.
-
An operation is ‘complete’ when the callback returns :finished
Instance Method Summary collapse
-
#call(*args) ⇒ Object
def initialize.
-
#initialize(callback) ⇒ Operation
constructor
A new instance of Operation.
-
#wait_until_finished ⇒ Object
Block until the operation has finished.
Constructor Details
#initialize(callback) ⇒ Operation
Returns a new instance of Operation.
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# File 'lib/mqrpc/operation.rb', line 11 def initialize(callback) @mutex = Mutex.new @callback = callback @cv = ConditionVariable.new @finished = false end |
Instance Method Details
#call(*args) ⇒ Object
def initialize
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# File 'lib/mqrpc/operation.rb', line 18 def call(*args) # TODO(sissel): Come up with a better way for the callback to declare # that it is not done than simply returning ':continue' @mutex.synchronize do ret = @callback.call(*args) if ret != :continue #MQRPC::logger.debug "operation #{self} finished" @finished = true @cv.signal end return ret end end |
#wait_until_finished ⇒ Object
Block until the operation has finished. If the operation has already finished, this method will return immediately.
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# File 'lib/mqrpc/operation.rb', line 35 def wait_until_finished @mutex.synchronize do if !finished? @cv.wait(@mutex) end end end |