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passepartout/lisp/system-model-embedding.lisp
Amr Gharbeia 717d63d84a
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v0.3.0: finish Async Embedding Gateway — mark-vector-stale, cron, defskill, ROADMAP updates
- Add mark-vector-stale(id, content): sets :vector to :pending, queues for re-embed
- Register cron job (embed-all-pending every 10m on :reflex tier via orchestrator)
- Add defskill :passepartout-system-model-embedding (priority 70)
- Remove embedding from topological-sort exclusion list in core-skills
- Export mark-vector-stale in core-defpackage
- Contract: items 4 (mark-vector-stale) and 5 (cron registration)
- Test: test-mark-vector-stale (5 checks)
- ROADMAP: mark Context Manager, Async Embedding Gateway, TUI Experience as DONE
- All v0.3.0 items now complete. Total: 5 suites, 85 checks, 0 failures
2026-05-05 18:24:08 -04:00

189 lines
8.0 KiB
Common Lisp

(in-package :passepartout)
(defvar *embedding-provider* :hashing
"Active embedding provider: :hashing, :local, :openai.")
(defvar *embedding-queue* nil
"Queue of text objects awaiting embedding.")
(defvar *embedding-batch-size* 10
"Maximum texts per embedding API call.")
(defun embedding-backend-local (text)
"Generate embeddings via a local OpenAI-compatible endpoint."
(let* ((url (or (uiop:getenv "LOCAL_BASE_URL") (format nil "http://~a" (or (uiop:getenv "OLLAMA_HOST") "localhost:11434"))))
(model (or (uiop:getenv "EMBEDDING_MODEL") "nomic-embed-text"))
(body (cl-json:encode-json-to-string
`((model . ,model) (input . ,text)))))
(handler-case
(let* ((response (dex:post (format nil "~a/api/embeddings" url)
:headers '(("Content-Type" . "application/json"))
:content body :connect-timeout 5 :read-timeout 30))
(json (cl-json:decode-json-from-string response))
(data (car (cdr (assoc :data json)))))
(or (cdr (assoc :embedding data))
(list :error "No embedding in response")))
(error (c)
(list :error (format nil "Embedding failed: ~a" c))))))
(defun embedding-backend-openai (text)
"Generate embeddings via OpenAI compatible /v1/embeddings endpoint."
(let* ((api-key (uiop:getenv "OPENAI_API_KEY"))
(base-url (or (uiop:getenv "EMBEDDING_BASE_URL") "https://api.openai.com/v1"))
(model (or (uiop:getenv "EMBEDDING_MODEL") "text-embedding-3-small"))
(body (cl-json:encode-json-to-string
`((model . ,model) (input . ,text)))))
(handler-case
(let* ((response (dex:post (format nil "~a/embeddings" base-url)
:headers `(("Content-Type" . "application/json")
("Authorization" . ,(format nil "Bearer ~a" api-key)))
:content body :connect-timeout 5 :read-timeout 30))
(json (cl-json:decode-json-from-string response))
(data (car (cdr (assoc :data json)))))
(or (cdr (assoc :embedding data))
(list :error "No embedding in response")))
(error (c)
(list :error (format nil "OpenAI Embedding failed: ~a" c))))))
(defun embedding-backend-hashing (text)
"Fallback: produces a deterministic vector from the text hash."
(let* ((digest (ironclad:digest-sequence :sha256 (babel:string-to-octets text)))
(vec (make-array 8 :element-type 'single-float :initial-element 0.0)))
(dotimes (i (min (length digest) 8))
(setf (aref vec i) (float (/ (aref digest i) 255.0) 0.0)))
vec))
(defvar *embedding-backend* nil
"Explicit backend override (nil = use *embedding-provider*).")
(defun embeddings-compute (text)
"Compute an embedding vector for text using the active backend."
(embed-object text))
(defun embed-object (text)
"Embed a single text string using the active backend."
(let* ((selected (or *embedding-backend* *embedding-provider* :hashing))
(backend (case selected
(:local #'embedding-backend-local)
(:openai #'embedding-backend-openai)
(t #'embedding-backend-hashing))))
(if backend
(progn
(log-message "EMBEDDING: Provider ~a, backend=~a" selected backend)
(funcall backend text))
(progn
(log-message "EMBEDDING: No backend for provider ~a, using hashing" selected)
(embedding-backend-hashing text)))))
(defun embed-queue-object (object)
"Queue a text object for async embedding."
(push object *embedding-queue*)
(log-message "EMBEDDING: Queued object"))
(defun embed-all-pending ()
"Drain the embedding queue, store vectors in the store-keyed objects."
(let ((batch (nreverse *embedding-queue*)))
(setf *embedding-queue* nil)
(dolist (item batch)
(handler-case
(let ((id (getf item :id))
(text (getf item :text)))
(when (and id text)
(let ((vec (embeddings-compute text))
(obj (gethash id *memory-store*)))
(when (and obj vec (not (listp vec)))
(setf (memory-object-vector obj) vec))
(log-message "EMBEDDING: Computed vector for ~a (~d dims)" id (length vec)))))
(error (c)
(log-message "EMBEDDING: Failed to embed object: ~a" c))))))
;; Apply env var override at load time
(let ((provider-env (uiop:getenv "EMBEDDING_PROVIDER")))
(when provider-env
(let ((kw (intern (string-upcase provider-env) :keyword)))
(setf *embedding-provider* kw)
(log-message "EMBEDDING: Set provider to ~a from EMBEDDING_PROVIDER env" kw))))
(log-message "EMBEDDING: Gateway loaded with provider ~a" *embedding-provider*)
(defun mark-vector-stale (id &optional content)
"Mark a memory object's vector as :pending and queue it for re-embedding.
When content is not supplied, reads from the object in *memory-store*."
(let* ((obj (gethash id *memory-store*))
(text (or content (and obj (memory-object-content obj)))))
(when obj
(setf (memory-object-vector obj) :pending))
(when text
(push (list :id id :text text) *embedding-queue*)
(log-message "EMBEDDING: Marked ~a vector stale, queued for re-embed" id))
(or obj text)))
(defskill :passepartout-system-model-embedding
:priority 70
:trigger (lambda (ctx) (declare (ignore ctx)) nil))
;; Register periodic batch embedding via cron (when orchestrator available)
(when (fboundp 'orchestrator-register-cron)
(handler-case
(orchestrator-register-cron :embed-batch
"<2026-05-05 Tue +10m>"
'embed-all-pending
:reflex)
(error (c)
(log-message "EMBEDDING: Cron registration failed: ~a" c))))
(eval-when (:compile-toplevel :load-toplevel :execute)
(ql:quickload :fiveam :silent t))
(defpackage :passepartout-embedding-tests
(:use :cl :passepartout)
(:export #:embedding-suite))
(in-package :passepartout-embedding-tests)
(fiveam:def-suite embedding-suite :description "Embedding gateway verification")
(fiveam:in-suite embedding-suite)
(fiveam:test test-embedding-backend-hashing
"Contract 2: hashing backend produces 8-element float vector."
(let ((vec (embedding-backend-hashing "hello world")))
(fiveam:is (arrayp vec))
(fiveam:is (= 8 (length vec)))
(fiveam:is (every #'numberp (coerce vec 'list)))))
(fiveam:test test-embedding-backend-hashing-deterministic
"Contract 2: same input produces same vector."
(let ((v1 (embedding-backend-hashing "test"))
(v2 (embedding-backend-hashing "test")))
(fiveam:is (equalp v1 v2))))
(fiveam:test test-embeddings-compute
"Contract 1: embeddings-compute returns a float vector."
(let ((vec (embeddings-compute "some text")))
(fiveam:is (arrayp vec))
(fiveam:is (> (length vec) 0))))
(fiveam:test test-embed-queue-and-drain
"Contract 3: embed-all-pending drains queue and stores vectors."
(let ((*embedding-queue* nil))
(embed-queue-object '(:id "test-obj" :text "sample text"))
(fiveam:is (= 1 (length *embedding-queue*)))
(embed-all-pending)
(fiveam:is (null *embedding-queue*))))
(fiveam:test test-mark-vector-stale
"Contract 4: mark-vector-stale sets vector to :pending and queues for re-embed."
(let ((*embedding-queue* nil))
;; Create an object in memory with a vector
(let ((obj (make-memory-object :id "stale-test" :content "stale content"
:vector #(1.0 2.0 3.0))))
(setf (gethash "stale-test" *memory-store*) obj)
(mark-vector-stale "stale-test")
(fiveam:is (eq :pending (memory-object-vector obj)))
(fiveam:is (= 1 (length *embedding-queue*)))
(let ((item (first *embedding-queue*)))
(fiveam:is (string= "stale-test" (getf item :id)))
(fiveam:is (string= "stale content" (getf item :text))))
;; Clean up
(remhash "stale-test" *memory-store*))))