anthropic.php
2 years ago
core.php
2 years ago
factory.php
2 years ago
google.php
2 years ago
huggingface.php
2 years ago
openai.php
2 years ago
openrouter.php
2 years ago
anthropic.php
280 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Engines_Anthropic extends Meow_MWAI_Engines_OpenAI |
| 4 | { |
| 5 | |
| 6 | // Streaming |
| 7 | protected $streamInTokens = null; |
| 8 | protected $streamOutTokens = null; |
| 9 | |
| 10 | public function __construct( $core, $env ) |
| 11 | { |
| 12 | parent::__construct( $core, $env ); |
| 13 | } |
| 14 | |
| 15 | protected function set_environment() { |
| 16 | $env = $this->env; |
| 17 | $this->apiKey = $env['apikey']; |
| 18 | } |
| 19 | |
| 20 | protected function build_url( $query, $endpoint = null ) { |
| 21 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 22 | if ( $query instanceof Meow_MWAI_Query_Text ) { |
| 23 | $url = trailingslashit( $endpoint ) . 'messages'; |
| 24 | } |
| 25 | else { |
| 26 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 27 | } |
| 28 | return $url; |
| 29 | } |
| 30 | |
| 31 | protected function build_headers( $query ) { |
| 32 | parent::build_headers( $query ); |
| 33 | $headers = array( |
| 34 | 'Content-Type' => 'application/json', |
| 35 | 'x-api-key' => $this->apiKey, |
| 36 | 'anthropic-version' => '2023-06-01', |
| 37 | 'User-Agent' => 'AI Engine', |
| 38 | ); |
| 39 | return $headers; |
| 40 | } |
| 41 | |
| 42 | public function final_checks( Meow_MWAI_Query_Base $query ) { |
| 43 | // We skip this completely. |
| 44 | // maxMessages is handed in build_messages(). |
| 45 | } |
| 46 | |
| 47 | protected function build_messages( $query ) { |
| 48 | $messages = []; |
| 49 | |
| 50 | // Then, if any, we need to add the 'messages', they are already formatted. |
| 51 | foreach ( $query->messages as $message ) { |
| 52 | $messages[] = $message; |
| 53 | } |
| 54 | |
| 55 | // Handle the maxMessages |
| 56 | if ( !empty( $query->maxMessages ) ) { |
| 57 | $messages = array_slice( $messages, -$query->maxMessages ); |
| 58 | } |
| 59 | |
| 60 | // If the first message is not a 'user' role, we remove it. |
| 61 | if ( !empty( $messages ) && $messages[0]['role'] !== 'user' ) { |
| 62 | array_shift( $messages ); |
| 63 | } |
| 64 | |
| 65 | // Finally, we need to add the message |
| 66 | // If there is a file (image), we need to sent the data (not the URL, as it's not supported by Anthropic yet). |
| 67 | $fileUrl = $query->get_file_url(); |
| 68 | |
| 69 | if ( !empty( $fileUrl ) ) { |
| 70 | // Currently, Claude supports the base64 source type for images, and the image/jpeg, image/png, image/gif, and image/webp media types: https://docs.anthropic.com/claude/reference/messages-examples#vision. |
| 71 | $mime = $query->get_file_mime_type(); |
| 72 | $messages[] = [ |
| 73 | 'role' => 'user', |
| 74 | 'content' => [ |
| 75 | [ |
| 76 | "type" => "text", |
| 77 | "text" => $query->get_message() |
| 78 | ], |
| 79 | [ |
| 80 | "type" => "image", |
| 81 | "source" => [ |
| 82 | "type" => "base64", |
| 83 | "media_type" => $mime, |
| 84 | "data" => $query->get_file_data() |
| 85 | ] |
| 86 | ] |
| 87 | ] |
| 88 | ]; |
| 89 | } |
| 90 | else { |
| 91 | $messages[] = [ 'role' => 'user', 'content' => $query->get_message() ]; |
| 92 | } |
| 93 | |
| 94 | return $messages; |
| 95 | } |
| 96 | |
| 97 | protected function build_body( $query, $streamCallback = null, $extra = null ) { |
| 98 | if ( $query instanceof Meow_MWAI_Query_Text ) { |
| 99 | $body = array( |
| 100 | "model" => $query->model, |
| 101 | "max_tokens" => $query->maxTokens, |
| 102 | "temperature" => $query->temperature, |
| 103 | "stream" => !is_null( $streamCallback ), |
| 104 | ); |
| 105 | |
| 106 | if ( !empty( $query->stop ) ) { |
| 107 | $body['stop'] = $query->stop; |
| 108 | } |
| 109 | |
| 110 | // First, we need to add the first message (the instructions). |
| 111 | if ( !empty( $query->instructions ) ) { |
| 112 | $body['system'] = $query->instructions; |
| 113 | } |
| 114 | |
| 115 | // If there is a context, we need to add it. |
| 116 | if ( !empty( $query->context ) ) { |
| 117 | if ( empty( $body['system'] ) ) { |
| 118 | $body['system'] = ""; |
| 119 | } |
| 120 | $body['system'] = empty( $body['system'] ) ? '' : $body['system'] . "\n\n"; |
| 121 | $body['system'] = $body['system'] . "Context:\n\n" . $query->context; |
| 122 | } |
| 123 | |
| 124 | $body['messages'] = $this->build_messages( $query ); |
| 125 | return $body; |
| 126 | } |
| 127 | else { |
| 128 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | protected function stream_data_handler( $json ) { |
| 133 | $content = null; |
| 134 | |
| 135 | // Get the data |
| 136 | if ( isset( $json['type'] ) && $json['type'] === 'message_start' ) { |
| 137 | $usage = $json['message']['usage']; |
| 138 | $this->streamInTokens = $usage['input_tokens']; |
| 139 | $this->inModel = $json['message']['model']; |
| 140 | $this->inId = $json['message']['id']; |
| 141 | } |
| 142 | else if ( isset( $json['type'] ) && ( $json['type'] === 'delta' || $json['type'] === 'content_block_delta' ) ) { |
| 143 | $content = $json['delta']['text']; |
| 144 | } |
| 145 | else if ( isset( $json['type'] ) && $json['type'] === 'message_delta' ) { |
| 146 | $usage = $json['usage']; |
| 147 | $this->streamOutTokens = $usage['output_tokens']; |
| 148 | } |
| 149 | else if ( isset( $json['type'] ) && $json['type'] === 'error' ) { |
| 150 | $error = $json['error']; |
| 151 | $message = $error['message']; |
| 152 | throw new Exception( $message ); |
| 153 | } |
| 154 | |
| 155 | // Avoid some endings |
| 156 | $endings = [ "<|im_end|>", "</s>" ]; |
| 157 | if ( in_array( $content, $endings ) ) { |
| 158 | $content = null; |
| 159 | } |
| 160 | |
| 161 | return ( $content === '0' || !empty( $content ) ) ? $content : null; |
| 162 | } |
| 163 | |
| 164 | public function run_completion_query( $query, $streamCallback = null ) : Meow_MWAI_Reply { |
| 165 | if ( !is_null( $streamCallback ) ) { |
| 166 | $this->streamCallback = $streamCallback; |
| 167 | add_action( 'http_api_curl', [ $this, 'stream_handler' ], 10, 3 ); |
| 168 | } |
| 169 | |
| 170 | $body = $this->build_body( $query, $streamCallback ); |
| 171 | $url = $this->build_url( $query ); |
| 172 | $headers = $this->build_headers( $query ); |
| 173 | $options = $this->build_options( $headers, $body ); |
| 174 | |
| 175 | try { |
| 176 | $res = $this->run_query( $url, $options, $streamCallback ); |
| 177 | $reply = new Meow_MWAI_Reply( $query ); |
| 178 | |
| 179 | $returned_id = null; |
| 180 | $returned_model = $this->inModel; |
| 181 | $returned_choices = []; |
| 182 | |
| 183 | if ( !is_null( $streamCallback ) ) { |
| 184 | // Streamed data |
| 185 | if ( empty( $this->streamContent ) ) { |
| 186 | $json = json_decode( $this->streamBuffer, true ); |
| 187 | if ( isset( $json['error']['message'] ) ) { |
| 188 | throw new Exception( $json['error']['message'] ); |
| 189 | } |
| 190 | } |
| 191 | $returned_id = $this->inId; |
| 192 | $returned_model = $this->inModel ? $this->inModel : $query->model; |
| 193 | $returned_in_tokens = !is_null( $this->streamInTokens ) ? $this->streamInTokens : null; |
| 194 | $returned_out_tokens = !is_null( $this->streamOutTokens ) ? $this->streamOutTokens : null; |
| 195 | $returned_choices = [ |
| 196 | [ |
| 197 | 'message' => [ |
| 198 | 'content' => $this->streamContent, |
| 199 | //'function_call' => $this->streamFunctionCall |
| 200 | ] |
| 201 | ] |
| 202 | ]; |
| 203 | } |
| 204 | else { |
| 205 | // Regular data |
| 206 | $data = $res['data']; |
| 207 | if ( empty( $data ) ) { |
| 208 | throw new Exception( 'No content received (res is null).' ); |
| 209 | } |
| 210 | if ( !$data['model'] ) { |
| 211 | error_log( print_r( $data, 1 ) ); |
| 212 | throw new Exception( 'Invalid response (no model information).' ); |
| 213 | } |
| 214 | $returned_id = $data['id']; |
| 215 | $returned_model = $data['model']; |
| 216 | $returned_in_tokens = isset( $data['usage']['input_tokens'] ) ? $data['usage']['input_tokens'] : null; |
| 217 | $returned_out_tokens = isset( $data['usage']['output_tokens'] ) ? $data['usage']['output_tokens'] : null; |
| 218 | // There is only one choice with |
| 219 | $returned_choices = [ [ |
| 220 | 'message' => [ |
| 221 | 'content' => $data['content'][0]['text'], |
| 222 | //'function_call' => $data['choices'][0]['delta']['function_call'] |
| 223 | ] |
| 224 | ] ]; |
| 225 | } |
| 226 | |
| 227 | $reply->set_choices( $returned_choices ); |
| 228 | if ( !empty( $returned_id ) ) { |
| 229 | $reply->set_id( $returned_id ); |
| 230 | } |
| 231 | |
| 232 | // Handle tokens. |
| 233 | $this->handle_tokens_usage( $reply, $query, $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 234 | |
| 235 | return $reply; |
| 236 | } |
| 237 | catch ( Exception $e ) { |
| 238 | $error = $e->getMessage(); |
| 239 | $json = json_decode( $error, true ); |
| 240 | if ( json_last_error() === JSON_ERROR_NONE ) { |
| 241 | if ( isset( $json['error'] ) && isset( $json['error']['message'] ) ) { |
| 242 | $error = $json['error']['message']; |
| 243 | } |
| 244 | } |
| 245 | error_log( $error ); |
| 246 | $service = $this->get_service_name(); |
| 247 | $message = "From $service: " . $error; |
| 248 | throw new Exception( $message ); |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | protected function get_service_name() { |
| 253 | return "Anthropic"; |
| 254 | } |
| 255 | |
| 256 | public function get_models() { |
| 257 | return apply_filters( 'mwai_anthropic_models', MWAI_ANTHROPIC_MODELS ); |
| 258 | } |
| 259 | |
| 260 | static public function get_models_static() { |
| 261 | return MWAI_ANTHROPIC_MODELS; |
| 262 | } |
| 263 | |
| 264 | public function handle_tokens_usage( $reply, $query, $returned_model, |
| 265 | $returned_in_tokens, $returned_out_tokens, $returned_price = null ) { |
| 266 | $returned_in_tokens = !is_null( $returned_in_tokens ) ? |
| 267 | $returned_in_tokens : $reply->get_in_tokens( $query ); |
| 268 | $returned_out_tokens = !is_null( $returned_out_tokens ) ? |
| 269 | $returned_out_tokens : $reply->get_out_tokens(); |
| 270 | if ( !empty( $reply->id ) ) { |
| 271 | // Would be cool to retrieve the usage from the API, but it's not possible. |
| 272 | } |
| 273 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 274 | $reply->set_usage( $usage ); |
| 275 | } |
| 276 | |
| 277 | public function get_price( Meow_MWAI_Query_Base $query, Meow_MWAI_Reply $reply ) { |
| 278 | return parent::get_price( $query, $reply ); |
| 279 | } |
| 280 | } |