Class: ConfigManager::Setting

Inherits:
Object
  • Object
show all
Defined in:
lib/config_manager/setting.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id, value, tags) ⇒ Setting

Returns a new instance of Setting.



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# File 'lib/config_manager/setting.rb', line 5

def initialize(id, value, tags)
  @id = id
  @value = value
  @tags = tags
end

Instance Attribute Details

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/config_manager/setting.rb', line 3

def id
  @id
end

#tags ⇒ Object (readonly)

Returns the value of attribute tags.



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# File 'lib/config_manager/setting.rb', line 3

def tags
  @tags
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/config_manager/setting.rb', line 3

def value
  @value
end

Class Method Details

.all ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 75

def all
  keys = $redis.smembers(global_key)
  return [] if keys.empty?

  values = $redis.mget(*keys)

  # remove deleted keys
  obsolete_keys = Range.new(0, keys.size, true).inject([]) do |memo, i|
    values.at(i) ? memo : (memo << keys.at(i))
  end

  unless obsolete_keys.empty?
    Rails.logger.info("DELETING OBSOLETE KEYS IN GLOBAL INDEX: #{obsolete_keys}")
    $redis.srem(global_key, obsolete_keys)
    keys = keys - obsolete_keys
    values.compact!
  end

  # get tags
  ids = keys.map {|k| k.gsub("#{prefix}:", '') }
  tag_keys = ids.map {|id| generate_tags_key(id) }
  tags = tag_keys.map {|key| $redis.smembers(key) }

  ids.zip(values, tags).map do |i,v, t|
    Setting.new(i, v, t)
  end
end

.build(params) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 29

def build(params)
  tags = (params[:tags] || params[:formatted_tags] || "").
      gsub(/\s*,\s*/,',').
      split(',')
  new(params[:id], params[:value], tags)
end

.create(params) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 40

def create(params)
  setting = build(params)
  if setting.valid?
    setting.persist
    find(params[:id], true)
  else
    setting
  end
end

.delete(id) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 107

def delete(id)
  $redis.del(generate_key(id), generate_tags_key(id))
end

.find(id, with_tags = false) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 63

def find(id, with_tags=false)
  key = generate_key(id)
  value = $redis.get(key)

  return nil unless value

  index = generate_tags_key(id)
  tags = with_tags ? $redis.smembers(index) : []

  new(id, value, tags)
end

.persist(id, value, *indexes) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 50

def persist(id, value, *indexes)
  $redis.set(generate_key(id), value)
  unless indexes.empty?
    $redis.sadd(generate_tags_key(id), indexes) 
    $redis.sadd(tag_global_key, indexes)
  end
  
  # update global and tag indexes
  indexes = indexes.map{|index| generate_index(index)}
  indexes << global_key
  index_by(id, indexes)
end

.tags ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 103

def tags
  $redis.smembers(tag_global_key)
end

.value(id) ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 36

def value(id)
  (find(id) || build({})).value
end

Instance Method Details

#formatted_tags ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 15

def formatted_tags
  @tags && @tags.join(', ')
end

#message ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 23

def message
  return "missing name(id)" unless @id.present?
  return "missing value" unless !!@value
end

#persist ⇒ Object 



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# File 'lib/config_manager/setting.rb', line 19

def persist
  Setting.persist(@id, @value, *@tags)
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/config_manager/setting.rb', line 11

def valid?
  @id.present? && !!@value
end