Class: MarchHare::BasicPropertiesBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/march_hare/metadata.rb

Class Method Summary collapse

Class Method Details

.build_properties_from(props = {}) ⇒ Object 



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# File 'lib/march_hare/metadata.rb', line 100

def self.build_properties_from(props = {})
  builder = AMQP::BasicProperties::Builder.new

  builder.content_type(props[:content_type]).
    content_encoding(props[:content_encoding]).
    headers(self.deep_stringify_keys(props[:headers])).
    delivery_mode(props[:persistent] ? 2 : 1).
    priority(props[:priority]).
    correlation_id(props[:correlation_id]).
    reply_to(props[:reply_to]).
    expiration(if props[:expiration] then props[:expiration].to_s end).
    message_id(props[:message_id]).
    timestamp(props[:timestamp]).
    type(props[:type]).
    user_id(props[:user_id]).
    app_id(props[:app_id]).
    cluster_id(props[:cluster_id]).
    build
end

.deep_stringify_keys(hash) ⇒ Object 



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# File 'lib/march_hare/metadata.rb', line 143

def self.deep_stringify_keys(hash)
  transform_hash(hash, :deep => true) do |hash, key, value|
    hash[key.to_s] = value
  end
end

.transform_hash(value, options = {}, &block) ⇒ Object

Deep hash transformation fn is courtesy of Avdi Grimm and Markus Kuhnt, with some modifications to support primitive and array values.



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# File 'lib/march_hare/metadata.rb', line 123

def self.transform_hash(value, options = {}, &block)
  return nil if value.nil?
  return value if !value.is_a?(Hash) && !value.is_a?(Array)
  return value.map { |v| transform_hash(v, options, &block) } if value.is_a?(Array)

  value.inject({}) do |result, (key, value)|
    value = if (options[:deep] && value.is_a?(Hash))
              transform_hash(value, options, &block)
            else
              if value.is_a?(Array)
                value.map { |v| transform_hash(v, options, &block) }
              else
                value
              end
            end
    block.call(result, key, value)
    result
  end
end