320 lines
8.2 KiB
Ruby
320 lines
8.2 KiB
Ruby
# frozen_string_literal: true
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class AiPersona < ActiveRecord::Base
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# places a hard limit, so per site we cache a maximum of 500 classes
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MAX_PERSONAS_PER_SITE = 500
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validates :name, presence: true, uniqueness: true, length: { maximum: 100 }
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validates :description, presence: true, length: { maximum: 2000 }
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validates :system_prompt, presence: true, length: { maximum: 10_000_000 }
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validate :system_persona_unchangeable, on: :update, if: :system
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validates :max_context_posts, numericality: { greater_than: 0 }, allow_nil: true
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belongs_to :created_by, class_name: "User"
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belongs_to :user
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before_destroy :ensure_not_system
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class MultisiteHash
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def initialize(id)
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@hash = Hash.new { |h, k| h[k] = {} }
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@id = id
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MessageBus.subscribe(channel_name) { |message| @hash[message.data] = {} }
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end
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def channel_name
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"/multisite-hash-#{@id}"
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end
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def current_db
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RailsMultisite::ConnectionManagement.current_db
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end
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def [](key)
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@hash.dig(current_db, key)
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end
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def []=(key, val)
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@hash[current_db][key] = val
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end
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def flush!
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@hash[current_db] = {}
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MessageBus.publish(channel_name, current_db)
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end
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end
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def self.persona_cache
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@persona_cache ||= MultisiteHash.new("persona_cache")
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end
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scope :ordered, -> { order("priority DESC, lower(name) ASC") }
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def self.all_personas
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persona_cache[:value] ||= AiPersona
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.ordered
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.where(enabled: true)
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.all
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.limit(MAX_PERSONAS_PER_SITE)
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.map(&:class_instance)
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end
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def self.mentionables
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persona_cache[:mentionable_usernames] ||= AiPersona
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.where(mentionable: true)
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.where(enabled: true)
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.joins(:user)
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.pluck("ai_personas.id, users.id, users.username_lower, allowed_group_ids, default_llm")
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.map do |id, user_id, username, allowed_group_ids, default_llm|
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{
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id: id,
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user_id: user_id,
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username: username,
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allowed_group_ids: allowed_group_ids,
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default_llm: default_llm,
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}
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end
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end
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after_commit :bump_cache
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def bump_cache
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self.class.persona_cache.flush!
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end
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def class_instance
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allowed_group_ids = self.allowed_group_ids
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id = self.id
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system = self.system
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user_id = self.user_id
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mentionable = self.mentionable
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default_llm = self.default_llm
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max_context_posts = self.max_context_posts
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persona_class = DiscourseAi::AiBot::Personas::Persona.system_personas_by_id[self.id]
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if persona_class
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persona_class.define_singleton_method :allowed_group_ids do
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allowed_group_ids
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end
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persona_class.define_singleton_method :id do
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id
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end
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persona_class.define_singleton_method :system do
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system
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end
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persona_class.define_singleton_method :user_id do
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user_id
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end
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persona_class.define_singleton_method :mentionable do
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mentionable
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end
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persona_class.define_singleton_method :default_llm do
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default_llm
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end
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persona_class.define_singleton_method :max_context_posts do
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max_context_posts
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end
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return persona_class
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end
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name = self.name
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description = self.description
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ai_persona_id = self.id
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options = {}
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tools = self.respond_to?(:commands) ? self.commands : self.tools
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tools =
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tools.filter_map do |element|
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inner_name = element
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current_options = nil
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if element.is_a?(Array)
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inner_name = element[0]
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current_options = element[1]
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end
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# Won't migrate data yet. Let's rewrite to the tool name.
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inner_name = inner_name.gsub("Command", "")
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inner_name = "List#{inner_name}" if %w[Categories Tags].include?(inner_name)
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begin
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klass = ("DiscourseAi::AiBot::Tools::#{inner_name}").constantize
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options[klass] = current_options if current_options
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klass
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rescue StandardError
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nil
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end
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end
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Class.new(DiscourseAi::AiBot::Personas::Persona) do
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define_singleton_method :id do
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id
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end
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define_singleton_method :name do
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name
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end
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define_singleton_method :user_id do
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user_id
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end
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define_singleton_method :description do
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description
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end
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define_singleton_method :system do
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system
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end
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define_singleton_method :allowed_group_ids do
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allowed_group_ids
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end
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define_singleton_method :user_id do
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user_id
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end
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define_singleton_method :mentionable do
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mentionable
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end
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define_singleton_method :default_llm do
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default_llm
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end
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define_singleton_method :max_context_posts do
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max_context_posts
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end
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define_singleton_method :to_s do
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"#<DiscourseAi::AiBot::Personas::Persona::Custom @name=#{self.name} @allowed_group_ids=#{self.allowed_group_ids.join(",")}>"
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end
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define_singleton_method :inspect do
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"#<DiscourseAi::AiBot::Personas::Persona::Custom @name=#{self.name} @allowed_group_ids=#{self.allowed_group_ids.join(",")}>"
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end
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define_method :initialize do |*args, **kwargs|
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@ai_persona = AiPersona.find_by(id: ai_persona_id)
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super(*args, **kwargs)
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end
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define_method :tools do
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tools
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end
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define_method :options do
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options
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end
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define_method :temperature do
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@ai_persona&.temperature
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end
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define_method :top_p do
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@ai_persona&.top_p
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end
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define_method :system_prompt do
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@ai_persona&.system_prompt || "You are a helpful bot."
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end
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end
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end
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FIRST_PERSONA_USER_ID = -1200
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def create_user!
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raise "User already exists" if user_id && User.exists?(user_id)
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# find the first id smaller than FIRST_USER_ID that is not taken
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id = nil
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id = DB.query_single(<<~SQL, FIRST_PERSONA_USER_ID, FIRST_PERSONA_USER_ID - 200).first
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WITH seq AS (
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SELECT generate_series(?, ?, -1) AS id
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)
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SELECT seq.id FROM seq
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LEFT JOIN users ON users.id = seq.id
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WHERE users.id IS NULL
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ORDER BY seq.id DESC
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SQL
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id = DB.query_single(<<~SQL).first if id.nil?
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SELECT min(id) - 1 FROM users
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SQL
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# note .invalid is a reserved TLD which will route nowhere
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user =
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User.new(
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email: "#{SecureRandom.hex}@does-not-exist.invalid",
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name: name.titleize,
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username: UserNameSuggester.suggest(name + "_bot"),
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active: true,
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approved: true,
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trust_level: TrustLevel[4],
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id: id,
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)
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user.save!(validate: false)
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update!(user_id: user.id)
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user
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end
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private
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def system_persona_unchangeable
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if top_p_changed? || temperature_changed? || system_prompt_changed? || commands_changed? ||
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name_changed? || description_changed?
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errors.add(:base, I18n.t("discourse_ai.ai_bot.personas.cannot_edit_system_persona"))
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end
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end
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def ensure_not_system
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if system
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errors.add(:base, I18n.t("discourse_ai.ai_bot.personas.cannot_delete_system_persona"))
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throw :abort
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end
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end
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end
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# == Schema Information
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#
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# Table name: ai_personas
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#
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# id :bigint not null, primary key
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# name :string(100) not null
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# description :string(2000) not null
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# commands :json not null
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# system_prompt :string(10000000) not null
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# allowed_group_ids :integer default([]), not null, is an Array
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# created_by_id :integer
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# enabled :boolean default(TRUE), not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# system :boolean default(FALSE), not null
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# priority :boolean default(FALSE), not null
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# temperature :float
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# top_p :float
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# user_id :integer
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# mentionable :boolean default(FALSE), not null
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# default_llm :text
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# max_context_posts :integer
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# max_post_context_tokens :integer
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# max_context_tokens :integer
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#
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# Indexes
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#
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# index_ai_personas_on_name (name) UNIQUE
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#
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