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chr-hertel
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[Store] Add Meilisearch
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‎examples/.env

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@@ -70,3 +70,7 @@ GEMINI_API_KEY=
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# For MariaDB store. Server defined in compose.yaml
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MARIADB_URI=pdo-mysql://[email protected]:3309/my_database
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# Meilisearch
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MEILISEARCH_HOST=http://127.0.0.1:7700
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MEILISEARCH_API_KEY=changeMe

‎examples/compose.yaml

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@@ -15,3 +15,10 @@ services:
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POSTGRES_PASSWORD: postgres
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ports:
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- "5432:5432"
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meilisearch:
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image: getmeili/meilisearch:v1.15
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environment:
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MEILI_MASTER_KEY: "${MEILISEARCH_MASTER_KEY:-changeMe}"
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ports:
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- "7700:7700"

‎examples/store/meilisearch-similarity-search.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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use Symfony\AI\Agent\Agent;
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use Symfony\AI\Agent\Toolbox\AgentProcessor;
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use Symfony\AI\Agent\Toolbox\Tool\SimilaritySearch;
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use Symfony\AI\Agent\Toolbox\Toolbox;
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use Symfony\AI\Platform\Bridge\OpenAI\Embeddings;
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use Symfony\AI\Platform\Bridge\OpenAI\GPT;
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use Symfony\AI\Platform\Bridge\OpenAI\PlatformFactory;
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use Symfony\AI\Platform\Message\Message;
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use Symfony\AI\Platform\Message\MessageBag;
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use Symfony\AI\Store\Bridge\Meilisearch\Store;
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use Symfony\AI\Store\Document\Metadata;
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use Symfony\AI\Store\Document\TextDocument;
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use Symfony\AI\Store\Document\Vectorizer;
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use Symfony\AI\Store\Indexer;
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use Symfony\Component\Dotenv\Dotenv;
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use Symfony\Component\HttpClient\HttpClient;
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use Symfony\Component\Uid\Uuid;
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require_once dirname(__DIR__).'/vendor/autoload.php';
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(new Dotenv())->loadEnv(dirname(__DIR__).'/.env');
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if (!isset($_SERVER['OPENAI_API_KEY'], $_SERVER['MEILISEARCH_HOST'], $_SERVER['MEILISEARCH_API_KEY'])) {
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echo 'Please set OPENAI_API_KEY, MEILISEARCH_API_KEY and MEILISEARCH_HOST environment variables.'.\PHP_EOL;
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exit(1);
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}
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// initialize the store
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$store = new Store(
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httpClient: HttpClient::create(),
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endpointUrl: $_SERVER['MEILISEARCH_HOST'],
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apiKey: $_SERVER['MEILISEARCH_API_KEY'],
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indexName: 'movies',
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);
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// our data
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$movies = [
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['title' => 'Inception', 'description' => 'A skilled thief is given a chance at redemption if he can successfully perform inception, the act of planting an idea in someone\'s subconscious.', 'director' => 'Christopher Nolan'],
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['title' => 'The Matrix', 'description' => 'A hacker discovers the world he lives in is a simulated reality and joins a rebellion to overthrow its controllers.', 'director' => 'The Wachowskis'],
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['title' => 'The Godfather', 'description' => 'The aging patriarch of an organized crime dynasty transfers control of his empire to his reluctant son.', 'director' => 'Francis Ford Coppola'],
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];
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// create embeddings and documents
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$documents = [];
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foreach ($movies as $i => $movie) {
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$documents[] = new TextDocument(
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id: Uuid::v4(),
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content: 'Title: '.$movie['title'].\PHP_EOL.'Director: '.$movie['director'].\PHP_EOL.'Description: '.$movie['description'],
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metadata: new Metadata($movie),
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);
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}
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// initialize the index
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$store->initialize();
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// create embeddings for documents
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$platform = PlatformFactory::create($_SERVER['OPENAI_API_KEY']);
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$vectorizer = new Vectorizer($platform, $embeddings = new Embeddings());
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$indexer = new Indexer($vectorizer, $store);
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$indexer->index($documents);
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$model = new GPT(GPT::GPT_4O_MINI);
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$similaritySearch = new SimilaritySearch($platform, $embeddings, $store);
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$toolbox = Toolbox::create($similaritySearch);
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$processor = new AgentProcessor($toolbox);
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$agent = new Agent($platform, $model, [$processor], [$processor]);
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$messages = new MessageBag(
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Message::forSystem('Please answer all user questions only using SimilaritySearch function.'),
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Message::ofUser('Which movie fits the theme of technology?')
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);
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$response = $agent->call($messages);
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echo $response->getContent().\PHP_EOL;

‎src/store/doc/index.rst

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@@ -40,6 +40,7 @@ You can find more advanced usage in combination with an Agent using the store fo
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* `Similarity Search with MariaDB (RAG)`_
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* `Similarity Search with MongoDB (RAG)`_
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* `Similarity Search with Pinecone (RAG)`_
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* `Similarity Search with Meilisearch (RAG)`_
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Supported Stores
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----------------
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* `MongoDB Atlas`_ (requires `mongodb/mongodb` as additional dependency)
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* `Pinecone`_ (requires `probots-io/pinecone-php` as additional dependency)
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* `Postgres`_ (requires `ext-pdo`)
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* `Meilisearch`_
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.. note::
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@@ -86,10 +88,12 @@ This leads to a store implementing two methods::
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.. _`Similarity Search with MariaDB (RAG)`: https://github.com/symfony/ai/blob/main/examples/store/mariadb-similarity-search.php
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.. _`Similarity Search with MongoDB (RAG)`: https://github.com/symfony/ai/blob/main/examples/store/mongodb-similarity-search.php
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.. _`Similarity Search with Pinecone (RAG)`: https://github.com/symfony/ai/blob/main/examples/store/pinecone-similarity-search.php
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.. _`Similarity Search with Meilisearch (RAG)`: https://github.com/symfony/ai/blob/main/examples/store/meilisearch-similarity-search.php
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.. _`Azure AI Search`: https://azure.microsoft.com/products/ai-services/ai-search
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.. _`Chroma`: https://www.trychroma.com/
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.. _`MariaDB`: https://mariadb.org/projects/mariadb-vector/
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.. _`MongoDB Atlas`: https://www.mongodb.com/atlas
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.. _`Pinecone`: https://www.pinecone.io/
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.. _`Postgres`: https://www.postgresql.org/about/news/pgvector-070-released-2852/
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.. _`Meilisearch`: https://www.meilisearch.com/
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.. _`GitHub`: https://github.com/symfony/ai/issues/16

‎src/store/src/Bridge/Meilisearch/Store.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\AI\Store\Bridge\Meilisearch;
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use Symfony\AI\Platform\Vector\NullVector;
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use Symfony\AI\Platform\Vector\Vector;
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use Symfony\AI\Store\Document\Metadata;
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use Symfony\AI\Store\Document\VectorDocument;
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use Symfony\AI\Store\Exception\InvalidArgumentException;
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use Symfony\AI\Store\InitializableStoreInterface;
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use Symfony\AI\Store\VectorStoreInterface;
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use Symfony\Component\Uid\Uuid;
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use Symfony\Contracts\HttpClient\HttpClientInterface;
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/**
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* @author Guillaume Loulier <[email protected]>
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*/
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final readonly class Store implements InitializableStoreInterface, VectorStoreInterface
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{
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/**
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* @param string $embedder The name of the embedder where vectors are stored
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* @param string $vectorFieldName The name of the field int the index that contains the vector
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*/
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public function __construct(
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private HttpClientInterface $httpClient,
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private string $endpointUrl,
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#[\SensitiveParameter] private string $apiKey,
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private string $indexName,
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private string $embedder = 'default',
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private string $vectorFieldName = '_vectors',
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private int $embeddingsDimension = 1536,
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) {
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}
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public function add(VectorDocument ...$documents): void
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{
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$this->request('PUT', \sprintf('indexes/%s/documents', $this->indexName), array_map(
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$this->convertToIndexableArray(...), $documents)
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);
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}
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public function query(Vector $vector, array $options = [], ?float $minScore = null): array
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{
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$response = $this->request('POST', \sprintf('indexes/%s/search', $this->indexName), [
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'vector' => $vector->getData(),
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'showRankingScore' => true,
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'retrieveVectors' => true,
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'hybrid' => [
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'embedder' => $this->embedder,
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'semanticRatio' => 1.0,
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],
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]);
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return array_map($this->convertToVectorDocument(...), $response['hits']);
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}
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public function initialize(array $options = []): void
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{
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if ([] !== $options) {
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throw new InvalidArgumentException('No supported options');
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}
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$this->request('POST', 'indexes', [
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'uid' => $this->indexName,
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'primaryKey' => 'id',
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]);
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$this->request('PATCH', \sprintf('indexes/%s/settings', $this->indexName), [
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'embedders' => [
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$this->embedder => [
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'source' => 'userProvided',
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'dimensions' => $this->embeddingsDimension,
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],
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],
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]);
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}
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/**
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* @param array<string, mixed> $payload
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*
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* @return array<string, mixed>
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*/
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private function request(string $method, string $endpoint, array $payload): array
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{
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$url = \sprintf('%s/%s', $this->endpointUrl, $endpoint);
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$response = $this->httpClient->request($method, $url, [
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'headers' => [
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'Authorization' => \sprintf('Bearer %s', $this->apiKey),
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],
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'json' => $payload,
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]);
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return $response->toArray();
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}
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/**
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* @return array<string, mixed>
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*/
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private function convertToIndexableArray(VectorDocument $document): array
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{
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return array_merge([
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'id' => $document->id->toRfc4122(),
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$this->vectorFieldName => [
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$this->embedder => [
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'embeddings' => $document->vector->getData(),
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'regenerate' => false,
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],
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],
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], $document->metadata->getArrayCopy());
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}
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/**
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* @param array<string, mixed> $data
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*/
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private function convertToVectorDocument(array $data): VectorDocument
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{
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return new VectorDocument(
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id: Uuid::fromString($data['id']),
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vector: !\array_key_exists($this->vectorFieldName, $data) || null === $data[$this->vectorFieldName]
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? new NullVector()
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: new Vector($data[$this->vectorFieldName][$this->embedder]['embeddings']),
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metadata: new Metadata($data),
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);
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}
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}

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