Amr Gharbeia
9362c56678
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cl-dotenv preserves surrounding quotes in .env values (unlike bash). PROVIDER_CASCADE="deepseek,..." resulted in keywords like :"DEEPSEEK instead of :DEEPSEEK, causing all cascade lookups to fail silently. Fixes: - .env.example: remove quotes from PROVIDER_CASCADE - provider-cascade-initialize: add #" and #' to string-trim chars - system-model-router: same fix for LOCAL_BACKENDS parsing
142 lines
7.2 KiB
Common Lisp
142 lines
7.2 KiB
Common Lisp
(in-package :passepartout)
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(defparameter *provider-configs*
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'((:local . (:base-url nil :key-env nil :url-env "LOCAL_BASE_URL" :default-model "llama3"))
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(:openrouter . (:base-url "https://openrouter.ai/api/v1" :key-env "OPENROUTER_API_KEY" :default-model "openrouter/auto"))
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(:openai . (:base-url "https://api.openai.com/v1" :key-env "OPENAI_API_KEY" :default-model "gpt-4o-mini"))
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(:anthropic . (:base-url "https://api.anthropic.com/v1" :key-env "ANTHROPIC_API_KEY" :default-model "claude-3-5-sonnet-20241022"))
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(:groq . (:base-url "https://api.groq.com/openai/v1" :key-env "GROQ_API_KEY" :default-model "llama-3.1-70b-versatile"))
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(:gemini . (:base-url "https://generativelanguage.googleapis.com/v1beta/openai" :key-env "GEMINI_API_KEY" :default-model "gemini-2.0-flash"))
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(:deepseek . (:base-url "https://api.deepseek.com/v1" :key-env "DEEPSEEK_API_KEY" :default-model "deepseek-chat"))
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(:nvidia . (:base-url "https://integrate.api.nvidia.com/v1" :key-env "NVIDIA_API_KEY" :default-model "meta/llama-3.1-405b-instruct"))))
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(defun provider-config (provider)
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"Returns the configuration plist for a provider keyword."
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(cdr (assoc provider *provider-configs*)))
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(defun provider-available-p (provider)
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"Checks if a provider is configured. Checks API key or URL env vars."
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(let* ((config (provider-config provider))
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(key-env (getf config :key-env))
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(url-env (getf config :url-env))
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(base-url (getf config :base-url)))
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(cond (key-env (let ((key (uiop:getenv key-env))) (and key (> (length key) 0))))
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(url-env (let ((url (uiop:getenv url-env))) (and url (> (length url) 0))))
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(base-url t))))
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(defun provider-openai-request (prompt system-prompt &key model (provider :openrouter))
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"Executes a request against any OpenAI-compatible API endpoint."
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(let* ((config (provider-config provider))
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(base-url (getf config :base-url))
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(key-env (getf config :key-env))
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(url-env (getf config :url-env))
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(default-model (getf config :default-model))
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(api-key (when key-env (uiop:getenv key-env)))
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(model-id (or model default-model))
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(url (if url-env
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(let ((host (uiop:getenv url-env)))
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(if host
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(format nil "http://~a/v1/chat/completions" host)
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(format nil "~a/chat/completions" base-url)))
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(format nil "~a/chat/completions" base-url)))
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(timeout (or (ignore-errors
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(parse-integer (uiop:getenv "LLM_REQUEST_TIMEOUT")))
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30))
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(headers `(("Content-Type" . "application/json")
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,@(when api-key `(("Authorization" . ,(format nil "Bearer ~a" api-key))))
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,@(when (eq provider :openrouter)
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`(("HTTP-Referer" . "https://github.com/amrgharbeia/passepartout")
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("X-Title" . "Passepartout")))))
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(body (cl-json:encode-json-to-string
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`((model . ,model-id)
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(messages . (( (role . "system") (content . ,system-prompt) )
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( (role . "user") (content . ,prompt) )))))))
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(handler-case
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(let* ((response (dex:post url :headers headers :content body
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:connect-timeout (min 10 timeout)
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:read-timeout (max 10 (- timeout 5))))
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(json (cl-json:decode-json-from-string response))
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(choices (cdr (assoc :choices json)))
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(first-choice (car choices))
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(message (cdr (assoc :message first-choice)))
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(content (cdr (assoc :content message))))
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(if content
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(list :status :success :content content)
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(list :status :error :message (format nil "~a: No content" provider))))
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(error (c)
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(list :status :error :message (format nil "~a Failure: ~a" provider c))))))
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(defun provider-register-all ()
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"Scans environment variables and registers all available LLM backends."
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(dolist (entry *provider-configs*)
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(let ((provider (car entry)))
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(when (provider-available-p provider)
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(log-message "LLM BACKEND: Registering provider ~a" provider)
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(register-probabilistic-backend provider
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(lambda (prompt system-prompt &key model)
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(provider-openai-request prompt system-prompt :model model :provider provider)))))))
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(defun provider-cascade-initialize ()
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"Reads PROVIDER_CASCADE from env and sets *provider-cascade*."
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(let ((cascade-str (uiop:getenv "PROVIDER_CASCADE")))
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(if cascade-str
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(setf *provider-cascade*
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(mapcar (lambda (s) (intern (string-upcase (string-trim '(#\Space #\" #\') s)) :keyword))
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(uiop:split-string cascade-str :separator '(#\,))))
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(setf *provider-cascade* (mapcar #'car (remove-if (lambda (e)
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(member (car e) '(:local)))
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*provider-configs*))))))
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(defun test-provider-connection (provider &optional api-key)
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"Test a provider API key by hitting its models endpoint.
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Returns (:ok) on success, (:fail reason) on failure.
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If API-KEY is nil, reads from environment."
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(let* ((config (provider-config provider))
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(base-url (getf config :base-url))
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(key-env (getf config :key-env))
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(url-env (getf config :url-env))
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(key (or api-key (when key-env (uiop:getenv key-env)))))
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(handler-case
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(let ((url (if url-env
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(let ((host (or (uiop:getenv url-env) "")))
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(format nil "http://~a/api/tags" host))
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(format nil "~a/models" (or base-url "")))))
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(if key-env
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(progn (dex:get url :headers `(("Authorization" . ,(format nil "Bearer ~a" key)))
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:connect-timeout 5 :read-timeout 10)
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'(:ok))
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(if url-env
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(progn (dex:get url :connect-timeout 5 :read-timeout 10) '(:ok))
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'(:fail "No URL source for this provider"))))
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(error (c) `(:fail ,(format nil "~a" c))))))
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(provider-register-all)
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(provider-cascade-initialize)
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(defskill :passepartout-system-model-provider
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:priority 50
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:trigger (lambda (ctx) (declare (ignore ctx)) nil))
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(ql:quickload :fiveam :silent t))
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(defpackage :passepartout-llm-gateway-tests
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(:use :cl :passepartout)
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(:export #:llm-gateway-suite))
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(in-package :passepartout-llm-gateway-tests)
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(fiveam:def-suite llm-gateway-suite :description "Tests for the LLM provider backend")
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(fiveam:in-suite llm-gateway-suite)
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(fiveam:test test-provider-rejects-bad-keyword
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"Contract 3: provider-config returns nil for unregistered provider."
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(let ((config (provider-config :not-a-real-provider)))
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(fiveam:is (null config))))
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(fiveam:test test-provider-config-registered
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"Contract 1: provider-config returns configuration plist for registered provider."
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(let ((config (provider-config :openrouter)))
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(fiveam:is (listp config))
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(fiveam:is (getf config :base-url))))
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