Class: Trifle::Stats::Driver::Mongo

Inherits:
Object
  • Object
show all
Includes:
Mixins::Packer
Defined in:
lib/trifle/stats/driver/mongo.rb

Overview

rubocop:disable Metrics/ClassLength

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Mixins::Packer

included

Constructor Details

#initialize(client, collection_name: 'trifle_stats', joined_identifier: :full, expire_after: nil, system_tracking: true, bulk_write: true) ⇒ Mongo

rubocop:disable Layout/LineLength, Metrics/ParameterLists



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# File 'lib/trifle/stats/driver/mongo.rb', line 12

def initialize(client, collection_name: 'trifle_stats', joined_identifier: :full, expire_after: nil, system_tracking: true, bulk_write: true) # rubocop:disable Layout/LineLength, Metrics/ParameterLists
  @client = client
  @collection_name = collection_name
  @joined_identifier = self.class.normalize_joined_identifier(joined_identifier)
  @expire_after = expire_after
  @system_tracking = system_tracking
  @bulk_write = bulk_write
  @separator = '::'
end

Instance Attribute Details

#client ⇒ Object

Returns the value of attribute client.



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# File 'lib/trifle/stats/driver/mongo.rb', line 10

def client
  @client
end

#collection_name ⇒ Object

Returns the value of attribute collection_name.



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# File 'lib/trifle/stats/driver/mongo.rb', line 10

def collection_name
  @collection_name
end

#separator ⇒ Object (readonly)

Returns the value of attribute separator.



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# File 'lib/trifle/stats/driver/mongo.rb', line 46

def separator
  @separator
end

Class Method Details

.normalize_joined_identifier(value) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 196

def self.normalize_joined_identifier(value)
  case value
  when nil, :full, 'full', :partial, 'partial'
    value.nil? ? nil : value.to_sym
  else
    raise ArgumentError, 'joined_identifier must be nil, :full, "full", :partial, or "partial"'
  end
end

.setup!(client, collection_name: 'trifle_stats', joined_identifier: :full, expire_after: nil) ⇒ Object

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# File 'lib/trifle/stats/driver/mongo.rb', line 22

def self.setup!(client, collection_name: 'trifle_stats', joined_identifier: :full, expire_after: nil) # rubocop:disable Metrics/MethodLength
  collection = client[collection_name]
  collection.create
  identifier_mode = normalize_joined_identifier(joined_identifier)
  case identifier_mode
  when :full
    collection.indexes.create_one({ key: 1 }, unique: true)
  when :partial
    collection.indexes.create_one({ key: 1, at: -1 }, unique: true)
  else
    collection.indexes.create_one({ key: 1, granularity: 1, at: -1 }, unique: true)
  end
  collection.indexes.create_one({ expire_at: 1 }, expire_after_seconds: 0) if expire_after
end

Instance Method Details

#build_update(operation, data:, expire_at: nil) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 160

def build_update(operation, data:, expire_at: nil)
  # Merge if $set and $set
  update_data = operation == '$set' && expire_at ? data.merge(expire_at: expire_at) : data

  # Add if $inc and $set
  {
    operation => update_data,
    **(operation != '$set' && expire_at ? { '$set' => { expire_at: expire_at } } : {})
  }
end

#description ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 37

def description
  mode = if @joined_identifier == :full
           'J'
         else
           @joined_identifier == :partial ? 'P' : 'S'
         end
  "#{self.class.name}(#{mode})"
end

#get(keys:) ⇒ Object

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# File 'lib/trifle/stats/driver/mongo.rb', line 171

def get(keys:) # rubocop:disable Metrics/AbcSize
  combinations = keys.map { |key| identifier_for(key) }
  data = collection.find('$or' => combinations)
  map = data.inject({}) do |o, d|
    o.merge(
      Nocturnal::Key.new(
        key: d['key'], granularity: d['granularity'], at: d['at']
      ).identifier(separator, @joined_identifier) => d['data']
    )
  end

  combinations.map { |combination| map[combination] || {} }
end

#inc(keys:, values:, count: 1, tracking_key: nil) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity



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# File 'lib/trifle/stats/driver/mongo.rb', line 58

def inc(keys:, values:, count: 1, tracking_key: nil) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity
  data = self.class.pack(hash: { data: values })

  if @bulk_write
    operations = keys.each_with_object([]) do |key, ops|
      filter = identifier_for(key)
      expire_at = @expire_after ? key.at + @expire_after : nil

      ops << upsert_operation('$inc', filter: filter, data: data, expire_at: expire_at)
      next unless @system_tracking

      ops << upsert_operation(
        '$inc',
        filter: system_identifier_for(key: key),
        data: system_data_for(key: key, count: count, tracking_key: tracking_key),
        expire_at: expire_at
      )
    end

    collection.bulk_write(operations)
  else
    keys.each do |key|
      filter = identifier_for(key)
      expire_at = @expire_after ? key.at + @expire_after : nil
      update = build_update('$inc', data: data, expire_at: expire_at)

      collection.update_many(filter, update, upsert: true)
      next unless @system_tracking

      system_update = build_update(
        '$inc',
        data: system_data_for(key: key, count: count, tracking_key: tracking_key),
        expire_at: expire_at
      )
      collection.update_many(system_identifier_for(key: key), system_update, upsert: true)
    end
  end
end

#ping(key:, values:) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/trifle/stats/driver/mongo.rb', line 136

def ping(key:, values:) # rubocop:disable Metrics/MethodLength
  return [] if @joined_identifier

  data = self.class.pack(hash: { data: values, at: key.at })
  identifier = identifier_for(key)
  expire_at = @expire_after ? key.at + @expire_after : nil

  if @bulk_write
    operations = [
      upsert_operation('$set', filter: identifier.slice(:key), data: data, expire_at: expire_at)
    ]

    collection.bulk_write(operations)
  else
    update = build_update('$set', data: data, expire_at: expire_at)
    collection.update_many(identifier.slice(:key), update, upsert: true)
  end
end

#scan(key:) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 185

def scan(key:)
  return [] if @joined_identifier

  data = collection.find(
    **identifier_for(key)
  ).sort(at: -1).first # rubocop:disable Style/RedundantSort
  return [] if data.nil?

  [data['at'], data['data']]
end

#set(keys:, values:, count: 1, tracking_key: nil) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity



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# File 'lib/trifle/stats/driver/mongo.rb', line 97

def set(keys:, values:, count: 1, tracking_key: nil) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity
  data = self.class.pack(hash: { data: values })

  if @bulk_write
    operations = keys.each_with_object([]) do |key, ops|
      filter = identifier_for(key)
      expire_at = @expire_after ? key.at + @expire_after : nil

      ops << upsert_operation('$set', filter: filter, data: data, expire_at: expire_at)
      next unless @system_tracking

      ops << upsert_operation(
        '$inc',
        filter: system_identifier_for(key: key),
        data: system_data_for(key: key, count: count, tracking_key: tracking_key),
        expire_at: expire_at
      )
    end

    collection.bulk_write(operations)
  else
    keys.each do |key|
      filter = identifier_for(key)
      expire_at = @expire_after ? key.at + @expire_after : nil
      update = build_update('$set', data: data, expire_at: expire_at)

      collection.update_many(filter, update, upsert: true)
      next unless @system_tracking

      system_update = build_update(
        '$inc',
        data: system_data_for(key: key, count: count, tracking_key: tracking_key),
        expire_at: expire_at
      )
      collection.update_many(system_identifier_for(key: key), system_update, upsert: true)
    end
  end
end

#system_data_for(key:, count: 1, tracking_key: nil) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 53

def system_data_for(key:, count: 1, tracking_key: nil)
  tracking_key ||= key.key
  self.class.pack(hash: { data: { count: count, keys: { tracking_key => count } } })
end

#system_identifier_for(key:) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 48

def system_identifier_for(key:)
  key = Nocturnal::Key.new(key: '__system__key__', granularity: key.granularity, at: key.at)
  identifier_for(key)
end

#upsert_operation(operation, filter:, data:, expire_at: nil) ⇒ Object 



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# File 'lib/trifle/stats/driver/mongo.rb', line 155

def upsert_operation(operation, filter:, data:, expire_at: nil)
  update = build_update(operation, data: data, expire_at: expire_at)
  { update_many: { filter: filter, update: update, upsert: true } }
end