Class: Sequent::Core::Helpers::MessageRouter
- Inherits:
-
Object
- Object
- Sequent::Core::Helpers::MessageRouter
- Defined in:
- lib/sequent/core/helpers/message_router.rb
Instance Attribute Summary collapse
-
#routes ⇒ Object
readonly
Returns the value of attribute routes.
Instance Method Summary collapse
-
#clear_routes ⇒ Object
Removes all routes from the router.
-
#initialize ⇒ MessageRouter
constructor
A new instance of MessageRouter.
-
#match_message(message) ⇒ Object
Returns a set of handlers that match the given message, or an empty set when none match.
-
#matches_message?(message) ⇒ Boolean
Returns true when there is at least one handler for the given message, or false otherwise.
-
#register_matchers(*matchers, handler) ⇒ Object
Registers a handler for the given matchers.
Constructor Details
#initialize ⇒ MessageRouter
Returns a new instance of MessageRouter.
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# File 'lib/sequent/core/helpers/message_router.rb', line 12 def initialize clear_routes end |
Instance Attribute Details
#routes ⇒ Object (readonly)
Returns the value of attribute routes.
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# File 'lib/sequent/core/helpers/message_router.rb', line 10 def routes @routes end |
Instance Method Details
#clear_routes ⇒ Object
Removes all routes from the router.
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# File 'lib/sequent/core/helpers/message_router.rb', line 49 def clear_routes @routes = Hash.new { |h, k| h[k] = Set.new } end |
#match_message(message) ⇒ Object
Returns a set of handlers that match the given message, or an empty set when none match.
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# File 'lib/sequent/core/helpers/message_router.rb', line 31 def () @routes .reduce(Set.new) do |memo, (matcher, handlers)| memo = memo.merge(handlers) if matcher.() memo end end |
#matches_message?(message) ⇒ Boolean
Returns true when there is at least one handler for the given message, or false otherwise.
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# File 'lib/sequent/core/helpers/message_router.rb', line 42 def () ().any? end |
#register_matchers(*matchers, handler) ⇒ Object
Registers a handler for the given matchers.
A matcher must implement #matches_message?(message) and return a truthy value when it matches, or a falsey value otherwise.
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# File 'lib/sequent/core/helpers/message_router.rb', line 22 def register_matchers(*matchers, handler) matchers.each do |matcher| @routes[matcher] << handler end end |