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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Mbvb1223\Pinecone\Inference; |
| 6 | |
| 7 | use GuzzleHttp\Client; |
| 8 | use GuzzleHttp\Exception\GuzzleException; |
| 9 | use Mbvb1223\Pinecone\Errors\PineconeException; |
| 10 | use Mbvb1223\Pinecone\Errors\PineconeValidationException; |
| 11 | use Mbvb1223\Pinecone\Utils\Configuration; |
| 12 | use Mbvb1223\Pinecone\Utils\HandlesApiResponse; |
| 13 | |
| 14 | class InferenceClient |
| 15 | { |
| 16 | use HandlesApiResponse; |
| 17 | |
| 18 | private Client $httpClient; |
| 19 | |
| 20 | public function __construct(Configuration $config) |
| 21 | { |
| 22 | $this->httpClient = new Client([ |
| 23 | 'base_uri' => $config->getControllerHost(), |
| 24 | 'timeout' => $config->getTimeout(), |
| 25 | 'headers' => $config->getDefaultHeaders(), |
| 26 | ]); |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * Generate embeddings for the given inputs. |
| 31 | * |
| 32 | * @param string $model The embedding model to use. |
| 33 | * @param array<int, string|array{text: string}> $inputs Array of input strings or objects with 'text' key. |
| 34 | * @param array<string, mixed> $parameters Optional model-specific parameters. |
| 35 | * @return array<string, mixed> The embedding response. |
| 36 | */ |
| 37 | public function embed(string $model, array $inputs, array $parameters = []): array |
| 38 | { |
| 39 | if (empty($model)) { |
| 40 | throw new PineconeValidationException('Model name is required for embedding.'); |
| 41 | } |
| 42 | |
| 43 | if (empty($inputs)) { |
| 44 | throw new PineconeValidationException('At least one input is required for embedding.'); |
| 45 | } |
| 46 | |
| 47 | try { |
| 48 | // Normalize inputs: accept strings or objects with 'text' key |
| 49 | $normalizedInputs = array_map(function ($input) { |
| 50 | if (is_string($input)) { |
| 51 | return ['text' => $input]; |
| 52 | } |
| 53 | |
| 54 | return $input; |
| 55 | }, $inputs); |
| 56 | |
| 57 | $payload = [ |
| 58 | 'model' => $model, |
| 59 | 'inputs' => $normalizedInputs, |
| 60 | ]; |
| 61 | |
| 62 | if (!empty($parameters)) { |
| 63 | $payload['parameters'] = (object) $parameters; |
| 64 | } |
| 65 | |
| 66 | $response = $this->httpClient->post('/embed', [ |
| 67 | 'json' => $payload, |
| 68 | ]); |
| 69 | |
| 70 | return $this->handleResponse($response); |
| 71 | } catch (GuzzleException $e) { |
| 72 | throw new PineconeException('Failed to generate embeddings: ' . $e->getMessage(), 0, $e); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Rerank documents by relevance to a query. |
| 78 | * |
| 79 | * @param string $model The reranking model to use. |
| 80 | * @param string $query The query to rank against. |
| 81 | * @param array<int, array<string, string>> $documents The documents to rerank. |
| 82 | * @param int $topN Number of top results to return (0 means return all). |
| 83 | * @param bool $returnDocuments Whether to include documents in the response. |
| 84 | * @param array<int, string> $rankFields Fields to use for ranking. |
| 85 | * @param array<string, mixed> $parameters Optional model-specific parameters. |
| 86 | * @return array<string, mixed> The reranking response. |
| 87 | */ |
| 88 | public function rerank( |
| 89 | string $model, |
| 90 | string $query, |
| 91 | array $documents, |
| 92 | int $topN = 0, |
| 93 | bool $returnDocuments = true, |
| 94 | array $rankFields = [], |
| 95 | array $parameters = [], |
| 96 | ): array { |
| 97 | if (empty($model)) { |
| 98 | throw new PineconeValidationException('Model name is required for reranking.'); |
| 99 | } |
| 100 | |
| 101 | if (empty($query)) { |
| 102 | throw new PineconeValidationException('Query is required for reranking.'); |
| 103 | } |
| 104 | |
| 105 | if (empty($documents)) { |
| 106 | throw new PineconeValidationException('At least one document is required for reranking.'); |
| 107 | } |
| 108 | |
| 109 | try { |
| 110 | $payload = [ |
| 111 | 'model' => $model, |
| 112 | 'query' => $query, |
| 113 | 'documents' => $documents, |
| 114 | 'return_documents' => $returnDocuments, |
| 115 | ]; |
| 116 | |
| 117 | if ($topN > 0) { |
| 118 | $payload['top_n'] = $topN; |
| 119 | } |
| 120 | |
| 121 | if (!empty($rankFields)) { |
| 122 | $payload['rank_fields'] = $rankFields; |
| 123 | } |
| 124 | |
| 125 | if (!empty($parameters)) { |
| 126 | $payload['parameters'] = (object) $parameters; |
| 127 | } |
| 128 | |
| 129 | $response = $this->httpClient->post('/rerank', [ |
| 130 | 'json' => $payload, |
| 131 | ]); |
| 132 | |
| 133 | return $this->handleResponse($response); |
| 134 | } catch (GuzzleException $e) { |
| 135 | throw new PineconeException('Failed to rerank documents: ' . $e->getMessage(), 0, $e); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | /** @return array<string, mixed> */ |
| 140 | public function listModels(): array |
| 141 | { |
| 142 | try { |
| 143 | $response = $this->httpClient->get('/models'); |
| 144 | |
| 145 | return $this->handleResponse($response); |
| 146 | } catch (GuzzleException $e) { |
| 147 | throw new PineconeException('Failed to list models: ' . $e->getMessage(), 0, $e); |
| 148 | } |
| 149 | } |
| 150 | } |