Class: SpotifyWeb::Handler Private

Inherits:
Object
  • Object
show all
Includes:
Assertions, Loggable
Defined in:
lib/spotify_web/handler.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Represents a callback that’s been bound to a particular event

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Assertions

#assert_valid_keys, #assert_valid_values

Constructor Details

#initialize(event, options = {}, &block) ⇒ Handler

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Builds a new handler bound to the given event.

Parameters:

  • event (String) —

    The name of the event to bind to

  • options (Hash) (defaults to: {}) —

    The configuration options

Options Hash (options):

  • :once (Boolean) — default: false —

    Whether to only call the handler once

  • :if (Hash) — default: nil —

    Data that must be matched to run

Raises:

  • (ArgumentError) —

    if an invalid option is specified



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# File 'lib/spotify_web/handler.rb', line 31

def initialize(event, options = {}, &block)
  assert_valid_values(event, *Event.commands.values)
  assert_valid_keys(options, :once, :if)
  options = {:once => false, :if => nil}.merge(options)

  @event = event
  @once = options[:once]
  @conditions = options[:if]
  @block = block
end

Instance Attribute Details

#conditions ⇒ Hash<String, Object> (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

The data that must be matched in order for the handler to run

Returns:

  • (Hash<String, Object>) 


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# File 'lib/spotify_web/handler.rb', line 22

def conditions
  @conditions
end

#event ⇒ String (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

The event this handler is bound to

Returns:

  • (String) 


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# File 'lib/spotify_web/handler.rb', line 14

def event
  @event
end

#once ⇒ Boolean (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Whether to only call the handler once and then never again

Returns:

  • (Boolean) —

    true if only called once, otherwise false



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# File 'lib/spotify_web/handler.rb', line 18

def once
  @once
end

Instance Method Details

#run(event) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Runs this handler for each result from the given event.

Parameters:

Returns:

  • (Boolean) —

    true if conditions were matched to run the handler, otherwise false



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# File 'lib/spotify_web/handler.rb', line 46

def run(event)
  if conditions_match?(event.data)
    # Run the block for each individual result
    event.results.each do |args|
      begin
        @block.call(*args)
      rescue StandardError => ex
        logger.error(([ex.message] + ex.backtrace) * "\n")
      end
    end

    true
  else
    false
  end
end