Class: TacScribe::Cache

Inherits:
Object
  • Object
show all
Includes:
GeoRuby::SimpleFeatures, Singleton
Defined in:
lib/tac_scribe/cache.rb

Overview

The in-memory cache that is updated by events in real-time before the data is synced to the DB

Constant Summary collapse

@@cache = 
Concurrent::Hash.new

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#reference_latitude ⇒ Object

Returns the value of attribute reference_latitude.



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# File 'lib/tac_scribe/cache.rb', line 19

def reference_latitude
  @reference_latitude
end

#reference_longitude ⇒ Object

Returns the value of attribute reference_longitude.



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# File 'lib/tac_scribe/cache.rb', line 19

def reference_longitude
  @reference_longitude
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/tac_scribe/cache.rb', line 96

def clear
  @@cache.clear
  self.reference_latitude = nil
  self.reference_longitude = nil
end

#data ⇒ Object 



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# File 'lib/tac_scribe/cache.rb', line 21

def data
  @@cache
end

#delete_object(id) ⇒ Object 



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# File 'lib/tac_scribe/cache.rb', line 92

def delete_object(id)
  @@cache[id][:deleted] = true if @@cache[id]
end

#write_object(object) ⇒ Object 



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# File 'lib/tac_scribe/cache.rb', line 25

def write_object(object)
  if (reference_latitude != 0 || reference_longitude != 0) && object[:type] != "Ground+Static+Aerodrome"
    localize_position(object)
  end

  id = object[:object_id]
  id ||= object[:id].to_s
  object[:id] = id

  cache_object = @@cache[id]

  object[:position] = set_position(object, cache_object)

  %i[object_id latitude longitude color country].each do |key|
    object.delete(key)
  end

  # https://wiki.hoggitworld.com/view/DCS_singleton_coalition
  # Tacview returns a string, CinC returns an integer so we
  # only do the conversion if there is a string.
  if object[:coalition] && object[:coalition].is_a?(String)
    object[:coalition] = case object[:coalition]
                         when 'Enemies' # Enemies is Bluefor
                           2
                         when 'Allies' # Allies is Redfor
                           1
                         else # Neutral
                           0
                         end
  end

  if object[:type] = "Ground+Static+Aerodrome"
    object[:heading] = object[:wind_heading] ? object[:wind_heading] : 0
    object[:speed] = object[:wind_speed] ? object[:wind_speec] : 0
    object.delete(:wind_heading)
    object.delete(:wind_speed)
    object.delete(:category)
    cache_object = object
    # No-op
  elsif cache_object
    object[:heading] = calculate_heading(cache_object, object)
    object[:speed] = calculate_speed(cache_object, object)
    cache_object.merge!(object)
  else
    object[:heading] = -1
    object[:speed] = 0
    cache_object = object
  end

  if !cache_object.key?(:altitude) || !cache_object[:altitude]
    cache_object[:altitude] = 0
  end
  if !cache_object.key?(:coalition) || !cache_object[:coalition]
    cache_object[:coalition] = 2
  end

  cache_object[:pilot] = nil unless cache_object.key?(:pilot)

  cache_object[:group] = nil unless cache_object.key?(:group)

  cache_object[:deleted] = false unless cache_object.key?(:deleted)

  cache_object[:updated_at] = Time.now

  @@cache[id] = cache_object
end