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Author SHA1 Message Date
Sam Saffron 13fca098d1 tweaks to open llm implementation
testing mistral at the moment and did the minimum to get it going
2023-10-04 17:20:46 +11:00
Sam Saffron d76309fa17 tweaks to llama2 support in chat, fix message so it conforms to recommendation
by facebook (add <s> )
2023-10-04 16:27:00 +11:00
Sam Saffron facce51f98 FEATURE: add support for an open LLM implementation
This is very much a work in progress, testing at the moment on:

TheBloke/Llama-2-7B-chat-fp16
2023-10-04 16:25:44 +11:00
621 changed files with 9057 additions and 1162135 deletions
-4
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@@ -1,7 +1,3 @@
< 3.3.0.beta1-dev: a65c4076a63104b61d213534db7f89aa3c8acd9e
< 3.2.0.beta5-dev: c70f43f130fb98e4a1adb1afd9b621aaa49088e3
< 3.2.0.beta4-dev: 493b48477a9288f2f1b6f021954088705a6673d6
< 3.2.0.beta2-dev: 3bced1c6f525553fe2b5b79d29bd66c1cf2a47d5
3.1.999: c0415bb7eb878b1b7abf112d65cba981030df8df
< 3.2.0.beta1-dev: 3e7c99de894b03e9161d9481da118fe893991a1d
3.1.0.beta3: 057fbe1ce6
+3
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@@ -0,0 +1,3 @@
{
"extends": "eslint-config-discourse"
}
-1
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@@ -1 +0,0 @@
module.exports = require("@discourse/lint-configs/eslint");
-21
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@@ -1,21 +0,0 @@
app/assets/stylesheets/vendor/
documentation/
package.json
config/locales/**/*.yml
!config/locales/**/*.en*.yml
script/import_scripts/**/*.yml
plugins/**/lib/javascripts/locale
public/
!/app/assets/javascripts/discourse/public
vendor/
app/assets/javascripts/discourse/tests/fixtures
spec/
node_modules/
dist/
tmp/
**/*.rb
**/*.html
**/*.json
**/*.md
+1
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@@ -0,0 +1 @@
{}
-1
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@@ -1 +0,0 @@
module.exports = require("@discourse/lint-configs/prettier");
-2
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@@ -1,4 +1,2 @@
inherit_gem:
rubocop-discourse: stree-compat.yml
RSpec/NamedSubject:
Enabled: false
+1 -1
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@@ -1,2 +1,2 @@
--print-width=100
--plugins=plugin/trailing_comma,plugin/disable_auto_ternary
--plugins=plugin/trailing_comma,disable_ternary
-1
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@@ -1 +0,0 @@
module.exports = require("@discourse/lint-configs/template-lint");
+4
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@@ -0,0 +1,4 @@
module.exports = {
plugins: ["ember-template-lint-plugin-discourse"],
extends: "discourse:recommended",
};
+1
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@@ -5,4 +5,5 @@ source "https://rubygems.org"
group :development do
gem "rubocop-discourse"
gem "syntax_tree"
gem "syntax_tree-disable_ternary"
end
+28 -55
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@@ -1,77 +1,50 @@
GEM
remote: https://rubygems.org/
specs:
activesupport (7.1.3.2)
base64
bigdecimal
concurrent-ruby (~> 1.0, >= 1.0.2)
connection_pool (>= 2.2.5)
drb
i18n (>= 1.6, < 2)
minitest (>= 5.1)
mutex_m
tzinfo (~> 2.0)
ast (2.4.2)
base64 (0.2.0)
bigdecimal (3.1.6)
concurrent-ruby (1.2.3)
connection_pool (2.4.1)
drb (2.2.1)
i18n (1.14.1)
concurrent-ruby (~> 1.0)
json (2.7.1)
language_server-protocol (3.17.0.3)
minitest (5.22.2)
mutex_m (0.2.0)
parallel (1.24.0)
parser (3.3.0.5)
json (2.6.2)
parallel (1.22.1)
parser (3.1.2.1)
ast (~> 2.4.1)
racc
prettier_print (1.2.1)
racc (1.7.3)
prettier_print (1.2.0)
rainbow (3.1.1)
regexp_parser (2.9.0)
rexml (3.2.6)
rubocop (1.61.0)
regexp_parser (2.6.0)
rexml (3.2.5)
rubocop (1.36.0)
json (~> 2.3)
language_server-protocol (>= 3.17.0)
parallel (~> 1.10)
parser (>= 3.3.0.2)
parser (>= 3.1.2.1)
rainbow (>= 2.2.2, < 4.0)
regexp_parser (>= 1.8, < 3.0)
rexml (>= 3.2.5, < 4.0)
rubocop-ast (>= 1.30.0, < 2.0)
rubocop-ast (>= 1.20.1, < 2.0)
ruby-progressbar (~> 1.7)
unicode-display_width (>= 2.4.0, < 3.0)
rubocop-ast (1.31.1)
parser (>= 3.3.0.4)
rubocop-capybara (2.20.0)
rubocop (~> 1.41)
rubocop-discourse (3.7.1)
activesupport (>= 6.1)
rubocop (>= 1.59.0)
rubocop-capybara (>= 2.0.0)
rubocop-factory_bot (>= 2.0.0)
rubocop-rspec (>= 2.25.0)
rubocop-factory_bot (2.25.1)
rubocop (~> 1.41)
rubocop-rspec (2.27.1)
rubocop (~> 1.40)
rubocop-capybara (~> 2.17)
rubocop-factory_bot (~> 2.22)
ruby-progressbar (1.13.0)
syntax_tree (6.2.0)
unicode-display_width (>= 1.4.0, < 3.0)
rubocop-ast (1.21.0)
parser (>= 3.1.1.0)
rubocop-discourse (3.0)
rubocop (>= 1.1.0)
rubocop-rspec (>= 2.0.0)
rubocop-rspec (2.13.2)
rubocop (~> 1.33)
ruby-progressbar (1.11.0)
syntax_tree (5.1.0)
prettier_print (>= 1.2.0)
tzinfo (2.0.6)
concurrent-ruby (~> 1.0)
unicode-display_width (2.5.0)
syntax_tree-disable_ternary (1.0.0)
unicode-display_width (2.3.0)
PLATFORMS
arm64-darwin-20
ruby
x86_64-darwin-18
x86_64-darwin-19
x86_64-darwin-20
x86_64-linux
DEPENDENCIES
rubocop-discourse
syntax_tree
syntax_tree-disable_ternary
BUNDLED WITH
2.5.4
2.3.10
@@ -1,7 +0,0 @@
import DiscourseRoute from "discourse/routes/discourse";
export default DiscourseRoute.extend({
model() {
return this.modelFor("adminPlugins.show.discourse-ai.ai-personas");
},
});
@@ -1,23 +0,0 @@
import { AUTO_GROUPS } from "discourse/lib/constants";
import DiscourseRoute from "discourse/routes/discourse";
export default DiscourseRoute.extend({
async model() {
const record = this.store.createRecord("ai-persona");
record.set("allowed_group_ids", [AUTO_GROUPS.trust_level_0.id]);
record.set("rag_uploads", []);
// these match the defaults on the table
record.set("rag_chunk_tokens", 374);
record.set("rag_chunk_overlap_tokens", 10);
record.set("rag_conversation_chunks", 10);
return record;
},
setupController(controller, model) {
this._super(controller, model);
controller.set(
"allPersonas",
this.modelFor("adminPlugins.show.discourse-ai.ai-personas")
);
},
});
@@ -1,19 +0,0 @@
import DiscourseRoute from "discourse/routes/discourse";
export default DiscourseRoute.extend({
async model(params) {
const allPersonas = this.modelFor(
"adminPlugins.show.discourse-ai.ai-personas"
);
const id = parseInt(params.id, 10);
return allPersonas.findBy("id", id);
},
setupController(controller, model) {
this._super(controller, model);
controller.set(
"allPersonas",
this.modelFor("adminPlugins.show.discourse-ai.ai-personas")
);
},
});
@@ -1,7 +0,0 @@
import DiscourseRoute from "discourse/routes/discourse";
export default class DiscourseAiAiPersonasRoute extends DiscourseRoute {
model() {
return this.store.findAll("ai-persona");
}
}
@@ -1,12 +0,0 @@
import { inject as service } from "@ember/service";
import DiscourseRoute from "discourse/routes/discourse";
export default class DiscourseAiIndexRoute extends DiscourseRoute {
@service router;
beforeModel() {
return this.router.transitionTo(
"adminPlugins.show.discourse-ai.ai-personas.index"
);
}
}
@@ -1 +0,0 @@
<AiPersonaListEditor @personas={{this.model}} />
@@ -1,4 +0,0 @@
<AiPersonaListEditor
@personas={{this.allPersonas}}
@currentPersona={{this.model}}
/>
@@ -1,4 +0,0 @@
<AiPersonaListEditor
@personas={{this.allPersonas}}
@currentPersona={{this.model}}
/>
@@ -1,181 +0,0 @@
# frozen_string_literal: true
module DiscourseAi
module Admin
class AiPersonasController < ::Admin::AdminController
requires_plugin ::DiscourseAi::PLUGIN_NAME
before_action :find_ai_persona,
only: %i[show update destroy create_user indexing_status_check]
def index
ai_personas =
AiPersona.ordered.map do |persona|
# we use a special serializer here cause names and descriptions are
# localized for system personas
LocalizedAiPersonaSerializer.new(persona, root: false)
end
tools =
DiscourseAi::AiBot::Personas::Persona.all_available_tools.map do |tool|
AiToolSerializer.new(tool, root: false)
end
llms =
DiscourseAi::Configuration::LlmEnumerator.values.map do |hash|
{ id: hash[:value], name: hash[:name] }
end
render json: { ai_personas: ai_personas, meta: { commands: tools, llms: llms } }
end
def show
render json: LocalizedAiPersonaSerializer.new(@ai_persona)
end
def create
ai_persona = AiPersona.new(ai_persona_params.except(:rag_uploads))
if ai_persona.save
RagDocumentFragment.link_persona_and_uploads(ai_persona, attached_upload_ids)
render json: { ai_persona: ai_persona }, status: :created
else
render_json_error ai_persona
end
end
def create_user
user = @ai_persona.create_user!
render json: BasicUserSerializer.new(user, root: "user")
end
def update
if @ai_persona.update(ai_persona_params.except(:rag_uploads))
RagDocumentFragment.update_persona_uploads(@ai_persona, attached_upload_ids)
render json: @ai_persona
else
render_json_error @ai_persona
end
end
def destroy
if @ai_persona.destroy
head :no_content
else
render_json_error @ai_persona
end
end
def upload_file
file = params[:file] || params[:files].first
if !SiteSetting.ai_embeddings_enabled?
raise Discourse::InvalidAccess.new("Embeddings not enabled")
end
validate_extension!(file.original_filename)
validate_file_size!(file.tempfile.size)
hijack do
upload =
UploadCreator.new(
file.tempfile,
file.original_filename,
type: "discourse_ai_rag_upload",
skip_validations: true,
).create_for(current_user.id)
if upload.persisted?
render json: UploadSerializer.new(upload)
else
render json: failed_json.merge(errors: upload.errors.full_messages), status: 422
end
end
end
def indexing_status_check
render json: RagDocumentFragment.indexing_status(@ai_persona, @ai_persona.uploads)
end
private
def find_ai_persona
@ai_persona = AiPersona.find(params[:id])
end
def attached_upload_ids
ai_persona_params[:rag_uploads].to_a.map { |h| h[:id] }
end
def ai_persona_params
permitted =
params.require(:ai_persona).permit(
:name,
:description,
:enabled,
:system_prompt,
:priority,
:top_p,
:temperature,
:default_llm,
:user_id,
:mentionable,
:max_context_posts,
:vision_enabled,
:vision_max_pixels,
:rag_chunk_tokens,
:rag_chunk_overlap_tokens,
:rag_conversation_chunks,
:question_consolidator_llm,
:role,
allowed_group_ids: [],
rag_uploads: [:id],
)
if commands = params.dig(:ai_persona, :commands)
permitted[:commands] = permit_commands(commands)
end
permitted
end
def permit_commands(commands)
return [] if !commands.is_a?(Array)
commands.filter_map do |command, options|
break nil if !command.is_a?(String)
options&.permit! if options && options.is_a?(ActionController::Parameters)
if options
[command, options]
else
command
end
end
end
def validate_extension!(filename)
extension = File.extname(filename)[1..-1] || ""
authorized_extensions = %w[txt md]
if !authorized_extensions.include?(extension)
raise Discourse::InvalidParameters.new(
I18n.t(
"upload.unauthorized",
authorized_extensions: authorized_extensions.join(" "),
),
)
end
end
def validate_file_size!(filesize)
max_size_bytes = 20.megabytes
if filesize > max_size_bytes
raise Discourse::InvalidParameters.new(
I18n.t(
"upload.attachments.too_large_humanized",
max_size: ActiveSupport::NumberHelper.number_to_human_size(max_size_bytes),
),
)
end
end
end
end
end
@@ -1,12 +0,0 @@
# frozen_string_literal: true
module DiscourseAi
module Admin
class DashboardController < ::Admin::StaffController
requires_plugin DiscourseAi::PLUGIN_NAME
def sentiment
end
end
end
end
@@ -6,21 +6,6 @@ module DiscourseAi
requires_plugin ::DiscourseAi::PLUGIN_NAME
requires_login
def show_debug_info
post = Post.find(params[:post_id])
guardian.ensure_can_debug_ai_bot_conversation!(post)
posts =
Post
.where("post_number <= ?", post.post_number)
.where(topic_id: post.topic_id)
.order("post_number DESC")
debug_info = AiApiAuditLog.where(post: posts).order(created_at: :desc).first
render json: debug_info, status: 200
end
def stop_streaming_response
post = Post.find(params[:post_id])
guardian.ensure_can_see!(post)
@@ -1,108 +0,0 @@
# frozen_string_literal: true
module DiscourseAi
module AiBot
class SharedAiConversationsController < ::ApplicationController
requires_plugin ::DiscourseAi::PLUGIN_NAME
requires_login only: %i[create update destroy]
before_action :require_site_settings!
skip_before_action :preload_json, :check_xhr, :redirect_to_login_if_required, only: %i[show]
def create
ensure_allowed_create!
RateLimiter.new(current_user, "share-ai-conversation", 10, 1.minute).performed!
shared_conversation = SharedAiConversation.share_conversation(current_user, @topic)
if shared_conversation.persisted?
render json: success_json.merge(share_key: shared_conversation.share_key)
else
render json: failed_json.merge(error: I18n.t("discourse_ai.share_ai.failed_to_share")),
status: :unprocessable_entity
end
end
def destroy
ensure_allowed_destroy!
SharedAiConversation.destroy_conversation(@shared_conversation)
render json:
success_json.merge(message: I18n.t("discourse_ai.share_ai.conversation_deleted"))
end
def show
@shared_conversation = SharedAiConversation.find_by(share_key: params[:share_key])
raise Discourse::NotFound if @shared_conversation.blank?
expires_in 1.minute, public: true
response.headers["X-Robots-Tag"] = "noindex"
if request.format.json?
render json: success_json.merge(@shared_conversation.to_json)
else
render "show", layout: false
end
end
def preview
ensure_allowed_preview!
data = SharedAiConversation.build_conversation_data(@topic, include_usernames: true)
data[:error] = @error if @error
data[:share_key] = @shared_conversation.share_key if @shared_conversation
data[:topic_id] = @topic.id
render json: data
end
private
def require_site_settings!
if !SiteSetting.discourse_ai_enabled ||
!SiteSetting.ai_bot_public_sharing_allowed_groups_map.any? ||
!SiteSetting.ai_bot_enabled
raise Discourse::NotFound
end
end
def ensure_allowed_preview!
@topic = Topic.find_by(id: params[:topic_id])
raise Discourse::NotFound if !@topic
@shared_conversation = SharedAiConversation.find_by(target: @topic)
@error = DiscourseAi::AiBot::EntryPoint.ai_share_error(@topic, guardian)
if @error == :not_allowed
raise Discourse::InvalidAccess.new(
nil,
nil,
custom_message: "discourse_ai.share_ai.errors.#{@error}",
)
end
end
def ensure_allowed_destroy!
@shared_conversation = SharedAiConversation.find_by(share_key: params[:share_key])
raise Discourse::InvalidAccess if @shared_conversation.blank?
guardian.ensure_can_destroy_shared_ai_bot_conversation!(@shared_conversation)
end
def ensure_allowed_create!
@topic = Topic.find_by(id: params[:topic_id])
raise Discourse::NotFound if !@topic
error = DiscourseAi::AiBot::EntryPoint.ai_share_error(@topic, guardian)
if error
raise Discourse::InvalidAccess.new(
nil,
nil,
custom_message: "discourse_ai.share_ai.errors.#{error}",
)
end
end
end
end
end
@@ -8,7 +8,14 @@ module DiscourseAi
before_action :ensure_can_request_suggestions
before_action :rate_limiter_performed!, except: %i[prompts]
include SecureUploadEndpointHelpers
def prompts
render json:
ActiveModel::ArraySerializer.new(
DiscourseAi::AiHelper::LlmPrompt.new.available_prompts,
root: false,
),
status: 200
end
def suggest
input = get_text_param!
@@ -16,45 +23,45 @@ module DiscourseAi
prompt = CompletionPrompt.find_by(id: params[:mode])
raise Discourse::InvalidParameters.new(:mode) if !prompt || !prompt.enabled?
if prompt.id == CompletionPrompt::CUSTOM_PROMPT
raise Discourse::InvalidParameters.new(:custom_prompt) if params[:custom_prompt].blank?
prompt.custom_instruction = params[:custom_prompt]
if prompt.prompt_type == "custom_prompt" && params[:custom_prompt].blank?
raise Discourse::InvalidParameters.new(:custom_prompt)
end
suggest_thumbnails(input) if prompt.id == CompletionPrompt::ILLUSTRATE_POST
hijack do
render json:
DiscourseAi::AiHelper::Assistant.new.generate_and_send_prompt(
prompt,
input,
current_user,
),
DiscourseAi::AiHelper::LlmPrompt.new.generate_and_send_prompt(prompt, params),
status: 200
end
rescue DiscourseAi::Completions::Endpoints::Base::CompletionFailed
rescue ::DiscourseAi::Inference::OpenAiCompletions::CompletionFailed,
::DiscourseAi::Inference::HuggingFaceTextGeneration::CompletionFailed,
::DiscourseAi::Inference::AnthropicCompletions::CompletionFailed => e
render_json_error I18n.t("discourse_ai.ai_helper.errors.completion_request_failed"),
status: 502
end
def suggest_title
input = get_text_param!
input_hash = { text: input }
prompt = CompletionPrompt.enabled_by_name("generate_titles")
raise Discourse::InvalidParameters.new(:mode) if !prompt
llm_prompt =
DiscourseAi::AiHelper::LlmPrompt
.new
.available_prompts(name_filter: "generate_titles")
.first
prompt = CompletionPrompt.find_by(id: llm_prompt[:id])
raise Discourse::InvalidParameters.new(:mode) if !prompt || !prompt.enabled?
hijack do
render json:
DiscourseAi::AiHelper::Assistant.new.generate_and_send_prompt(
DiscourseAi::AiHelper::LlmPrompt.new.generate_and_send_prompt(
prompt,
input,
current_user,
input_hash,
),
status: 200
end
rescue DiscourseAi::Completions::Endpoints::Base::CompletionFailed
rescue ::DiscourseAi::Inference::OpenAiCompletions::CompletionFailed,
::DiscourseAi::Inference::HuggingFaceTextGeneration::CompletionFailed,
::DiscourseAi::Inference::AnthropicCompletions::CompletionFailed => e
render_json_error I18n.t("discourse_ai.ai_helper.errors.completion_request_failed"),
status: 502
end
@@ -79,7 +86,9 @@ module DiscourseAi
status: 200
end
def suggest_thumbnails(input)
def suggest_thumbnails
input = get_text_param!
hijack do
thumbnails = DiscourseAi::AiHelper::Painter.new.commission_thumbnails(input, current_user)
@@ -87,78 +96,25 @@ module DiscourseAi
end
end
def explain
post_id = get_post_param!
term_to_explain = get_text_param!
post = Post.includes(:topic).find_by(id: post_id)
raise Discourse::InvalidParameters.new(:post_id) unless post
Jobs.enqueue(
:stream_post_helper,
post_id: post.id,
user_id: current_user.id,
term_to_explain: term_to_explain,
)
render json: { success: true }, status: 200
rescue DiscourseAi::Completions::Endpoints::Base::CompletionFailed
render_json_error I18n.t("discourse_ai.ai_helper.errors.completion_request_failed"),
status: 502
end
def caption_image
image_url = params[:image_url]
raise Discourse::InvalidParameters.new(:image_url) if !image_url
image = upload_from_full_url(image_url)
raise Discourse::NotFound if image.blank?
final_image_url = get_caption_url(image, image_url)
hijack do
caption =
DiscourseAi::AiHelper::Assistant.new.generate_image_caption(
final_image_url,
current_user,
)
render json: {
caption:
"#{caption} (#{I18n.t("discourse_ai.ai_helper.image_caption.attribution")})",
},
status: 200
end
rescue DiscourseAi::Completions::Endpoints::Base::CompletionFailed, Net::HTTPBadResponse
render_json_error I18n.t("discourse_ai.ai_helper.errors.completion_request_failed"),
status: 502
end
private
def get_text_param!
params[:text].tap { |t| raise Discourse::InvalidParameters.new(:text) if t.blank? }
end
def get_post_param!
params[:post_id].tap { |t| raise Discourse::InvalidParameters.new(:post_id) if t.blank? }
end
def rate_limiter_performed!
RateLimiter.new(current_user, "ai_assistant", 6, 3.minutes).performed!
end
def ensure_can_request_suggestions
if !current_user.in_any_groups?(SiteSetting.ai_helper_allowed_groups_map)
raise Discourse::InvalidAccess
end
end
user_group_ids = current_user.group_ids
def get_caption_url(image_upload, image_url)
if image_upload.secure?
check_secure_upload_permission(image_upload)
return Discourse.store.url_for(image_upload)
end
allowed =
SiteSetting.ai_helper_allowed_groups_map.any? do |group_id|
user_group_ids.include?(group_id)
end
UrlHelper.absolute(image_url)
raise Discourse::InvalidAccess if !allowed
end
end
end
@@ -36,34 +36,6 @@ module DiscourseAi
render_serialized(grouped_results, GroupedSearchResultSerializer, result: grouped_results)
end
end
def quick_search
query = params[:q].to_s
if query.length < SiteSetting.min_search_term_length
raise Discourse::InvalidParameters.new(:q)
end
grouped_results =
Search::GroupedSearchResults.new(
type_filter: SEMANTIC_SEARCH_TYPE,
term: query,
search_context: guardian,
use_pg_headlines_for_excerpt: false,
)
semantic_search = DiscourseAi::Embeddings::SemanticSearch.new(guardian)
if !semantic_search.cached_query?(query)
RateLimiter.new(current_user, "semantic-search", 60, 1.minutes).performed!
end
hijack do
semantic_search.quick_search(query).each { |topic_post| grouped_results.add(topic_post) }
render_serialized(grouped_results, GroupedSearchResultSerializer, result: grouped_results)
end
end
end
end
end
@@ -1,15 +0,0 @@
# frozen_string_literal: true
module DiscourseAi
module AiBot
module SharedAiConversationsHelper
# bump up version when assets change
# long term we may want to change this cause it is hard to remember
# to bump versions, but for now this does the job
VERSION = "1"
def share_asset_url(short_path)
::UrlHelper.local_cdn_url("/plugins/discourse-ai/ai-share/#{short_path}?#{VERSION}")
end
end
end
end
-32
View File
@@ -1,32 +0,0 @@
# frozen_string_literal: true
module ::Jobs
class CreateAiReply < ::Jobs::Base
sidekiq_options retry: false
def execute(args)
return unless bot_user = User.find_by(id: args[:bot_user_id])
return unless post = Post.includes(:topic).find_by(id: args[:post_id])
persona_id = args[:persona_id]
begin
persona =
if args[:skip_persona_security_check]
persona = AiPersona.all_personas.find { |persona| persona.id == persona_id }
else
persona = DiscourseAi::AiBot::Personas::Persona.find_by(user: post.user, id: persona_id)
end
raise DiscourseAi::AiBot::Bot::BOT_NOT_FOUND if persona.nil?
bot = DiscourseAi::AiBot::Bot.as(bot_user, persona: persona.new)
DiscourseAi::AiBot::Playground.new(bot).reply_to(post)
rescue DiscourseAi::AiBot::Bot::BOT_NOT_FOUND
Rails.logger.warn(
"Bot not found for post #{post.id} - perhaps persona was deleted or bot was disabled",
)
end
end
end
end
-172
View File
@@ -1,172 +0,0 @@
# frozen_string_literal: true
module ::Jobs
class DigestRagUpload < ::Jobs::Base
CHUNK_SIZE = 1024
CHUNK_OVERLAP = 64
MAX_FRAGMENTS = 100_000
# TODO(roman): Add a way to automatically recover from errors, resulting in unindexed uploads.
def execute(args)
return if (upload = Upload.find_by(id: args[:upload_id])).nil?
return if (ai_persona = AiPersona.find_by(id: args[:ai_persona_id])).nil?
truncation = DiscourseAi::Embeddings::Strategies::Truncation.new
vector_rep =
DiscourseAi::Embeddings::VectorRepresentations::Base.current_representation(truncation)
tokenizer = vector_rep.tokenizer
chunk_tokens = ai_persona.rag_chunk_tokens
overlap_tokens = ai_persona.rag_chunk_overlap_tokens
fragment_ids = RagDocumentFragment.where(ai_persona: ai_persona, upload: upload).pluck(:id)
# Check if this is the first time we process this upload.
if fragment_ids.empty?
document = get_uploaded_file(upload)
return if document.nil?
RagDocumentFragment.publish_status(upload, { total: 0, indexed: 0, left: 0 })
fragment_ids = []
idx = 0
ActiveRecord::Base.transaction do
chunk_document(
file: document,
tokenizer: tokenizer,
chunk_tokens: chunk_tokens,
overlap_tokens: overlap_tokens,
) do |chunk, metadata|
fragment_ids << RagDocumentFragment.create!(
ai_persona: ai_persona,
fragment: chunk,
fragment_number: idx + 1,
upload: upload,
metadata: metadata,
).id
idx += 1
if idx > MAX_FRAGMENTS
Rails.logger.warn("Upload #{upload.id} has too many fragments, truncating.")
break
end
end
end
end
fragment_ids.each_slice(50) do |slice|
Jobs.enqueue(:generate_rag_embeddings, fragment_ids: slice)
end
end
private
def chunk_document(file:, tokenizer:, chunk_tokens:, overlap_tokens:)
buffer = +""
current_metadata = nil
done = false
overlap = ""
# generally this will be plenty
read_size = chunk_tokens * 10
while buffer.present? || !done
if buffer.length < read_size
read = file.read(read_size)
done = true if read.nil?
read = Encodings.to_utf8(read) if read
buffer << (read || "")
end
# at this point we unconditionally have 2x CHUNK_SIZE worth of data in the buffer
metadata_regex = /\[\[metadata (.*?)\]\]/m
before_metadata, new_metadata, after_metadata = buffer.split(metadata_regex)
to_chunk = nil
if before_metadata.present?
to_chunk = before_metadata
elsif after_metadata.present?
current_metadata = new_metadata
to_chunk = after_metadata
buffer = buffer.split(metadata_regex, 2).last
overlap = ""
else
current_metadata = new_metadata
buffer = buffer.split(metadata_regex, 2).last
overlap = ""
next
end
chunk, split_char = first_chunk(to_chunk, tokenizer: tokenizer, chunk_tokens: chunk_tokens)
buffer = buffer[chunk.length..-1]
processed_chunk = overlap + chunk
processed_chunk.strip!
processed_chunk.gsub!(/\n[\n]+/, "\n\n")
yield processed_chunk, current_metadata
current_chunk_tokens = tokenizer.encode(chunk)
overlap_token_ids = current_chunk_tokens[-overlap_tokens..-1] || current_chunk_tokens
overlap = ""
while overlap_token_ids.present?
begin
overlap = tokenizer.decode(overlap_token_ids) + split_char
break if overlap.encoding == Encoding::UTF_8
rescue StandardError
# it is possible that we truncated mid char
end
overlap_token_ids.shift
end
# remove first word it is probably truncated
overlap = overlap.split(" ", 2).last
end
end
def first_chunk(text, chunk_tokens:, tokenizer:, splitters: ["\n\n", "\n", ".", ""])
return text, " " if tokenizer.tokenize(text).length <= chunk_tokens
splitters = splitters.find_all { |s| text.include?(s) }.compact
buffer = +""
split_char = nil
splitters.each do |splitter|
split_char = splitter
text
.split(split_char)
.each do |part|
break if tokenizer.tokenize(buffer + split_char + part).length > chunk_tokens
buffer << split_char
buffer << part
end
break if buffer.length > 0
end
[buffer, split_char]
end
def get_uploaded_file(upload)
store = Discourse.store
@file ||=
if store.external?
# Upload#filesize could be approximate.
# add two extra Mbs to make sure that we'll be able to download the upload.
max_filesize = upload.filesize + 2.megabytes
store.download(upload, max_file_size_kb: max_filesize)
else
File.open(store.path_for(upload))
end
end
end
end
@@ -1,21 +0,0 @@
# frozen_string_literal: true
module Jobs
class GenerateChatThreadTitle < ::Jobs::Base
sidekiq_options queue: "low"
def execute(args)
return unless SiteSetting.ai_helper_automatic_chat_thread_title
return if (thread_id = args[:thread_id]).blank?
thread = ::Chat::Thread.find_by_id(thread_id)
return if thread.nil? || thread.title.present?
title = DiscourseAi::AiHelper::ChatThreadTitler.new(thread).suggested_title
return if title.blank?
# TODO use a proper API that will make the new title update live
thread.update!(title: title)
end
end
end

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