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	add /completion.js file to make it easy to use the server from js
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								examples/server/completion.js.hpp
									
									
									
									
									
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								examples/server/completion.js.hpp
									
									
									
									
									
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							| @@ -0,0 +1,193 @@ | ||||
| unsigned char completion_js[] = { | ||||
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|   0x6c, 0x6c, 0x79, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x63, 0x6f, | ||||
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|   0x72, 0x74, 0x28, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x0a, 0x20, | ||||
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|   0x65, 0x6e, 0x74, 0x3b, 0x0a, 0x7d, 0x0a | ||||
| }; | ||||
| unsigned int completion_js_len = 2275; | ||||
| @@ -4,11 +4,19 @@ | ||||
| # get the directory of this script file | ||||
| DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" | ||||
| PUBLIC=$DIR/public | ||||
| OUTPUT=$DIR/templats.hpp | ||||
|  | ||||
| echo "// Generated file, do not edit" > $OUTPUT | ||||
| echo "" > $OUTPUT | ||||
|  | ||||
| echo "download js bundle files" | ||||
| curl https://npm.reversehttp.com/@preact/signals-core,@preact/signals,htm/preact,preact,preact/hooks > $PUBLIC/index.js | ||||
| echo >> $PUBLIC/index.js # add newline | ||||
|  | ||||
| echo "generate hpp files" | ||||
| xxd -n index_html -i $PUBLIC/index.html  > $DIR/index.html.hpp | ||||
| xxd -n index_js -i $PUBLIC/index.js   > $DIR/index.js.hpp | ||||
| FILES=$(ls $PUBLIC) | ||||
|  | ||||
| for FILE in $FILES; do | ||||
|   func=$(echo $FILE | tr '.' '_') | ||||
|   echo "generate $FILE.hpp ($func)" | ||||
|   xxd -n $func -i $PUBLIC/$FILE > $DIR/$FILE.hpp | ||||
| done | ||||
|   | ||||
										
											
												File diff suppressed because it is too large
												Load Diff
											
										
									
								
							
							
								
								
									
										81
									
								
								examples/server/public/completion.js
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										81
									
								
								examples/server/public/completion.js
									
									
									
									
									
										Normal file
									
								
							| @@ -0,0 +1,81 @@ | ||||
| const paramDefaults = { | ||||
|   stream: true, | ||||
|   n_predict: 500, | ||||
|   temperature: 0.2, | ||||
|   stop: ["</s>"] | ||||
| }; | ||||
|  | ||||
| /** | ||||
|  * This function completes the input text using a llama dictionary. | ||||
|  * @param {object} params - The parameters for the completion request. | ||||
|  * @param {object} controller - an instance of AbortController if you need one, or null. | ||||
|  * @param {function} callback - The callback function to call when the completion is done. | ||||
|  * @returns {string} the completed text as a string. Ideally ignored, and you get at it via the callback. | ||||
|  */ | ||||
| export const llamaComplete = async (params, controller, callback) => { | ||||
|   if (!controller) { | ||||
|     controller = new AbortController(); | ||||
|   } | ||||
|   const completionParams = { ...paramDefaults, ...params }; | ||||
|  | ||||
|   // we use fetch directly here becasue the built in fetchEventSource does not support POST | ||||
|   const response = await fetch("/completion", { | ||||
|     method: 'POST', | ||||
|     body: JSON.stringify(completionParams), | ||||
|     headers: { | ||||
|       'Connection': 'keep-alive', | ||||
|       'Content-Type': 'application/json', | ||||
|       'Accept': 'text/event-stream' | ||||
|     }, | ||||
|     signal: controller.signal, | ||||
|   }); | ||||
|  | ||||
|   const reader = response.body.getReader(); | ||||
|   const decoder = new TextDecoder(); | ||||
|  | ||||
|   let content = ""; | ||||
|  | ||||
|   try { | ||||
|  | ||||
|     let cont = true; | ||||
|  | ||||
|     while (cont) { | ||||
|       const result = await reader.read(); | ||||
|       if (result.done) { | ||||
|         break; | ||||
|       } | ||||
|  | ||||
|       // sse answers in the form multiple lines of: value\n with data always present as a key. in our case we | ||||
|       // mainly care about the data: key here, which we expect as json | ||||
|       const text = decoder.decode(result.value); | ||||
|  | ||||
|       // parse all sse events and add them to result | ||||
|       const regex = /^(\S+):\s(.*)$/gm; | ||||
|       for (const match of text.matchAll(regex)) { | ||||
|         result[match[1]] = match[2] | ||||
|       } | ||||
|  | ||||
|       // since we know this is llama.cpp, let's just decode the json in data | ||||
|       result.data = JSON.parse(result.data); | ||||
|       content += result.data.content; | ||||
|  | ||||
|       // callack | ||||
|       if (callback) { | ||||
|         cont = callback(result) != false; | ||||
|       } | ||||
|  | ||||
|       // if we got a stop token from server, we will break here | ||||
|       if (result.data.stop) { | ||||
|         break; | ||||
|       } | ||||
|     } | ||||
|   } catch (e) { | ||||
|     console.error("llama error: ", e); | ||||
|     throw e; | ||||
|   } | ||||
|   finally { | ||||
|     controller.abort(); | ||||
|   } | ||||
|  | ||||
|   return content; | ||||
| } | ||||
| @@ -63,12 +63,13 @@ | ||||
|     } | ||||
|   </style> | ||||
|  | ||||
|  | ||||
|   <script type="module"> | ||||
|     import { | ||||
|       html, h, signal, effect, computed, render, useSignal, useEffect, useRef | ||||
|     } from '/index.js'; | ||||
|  | ||||
|     import { llamaComplete } from '/completion.js'; | ||||
|  | ||||
|     const transcript = signal([]) | ||||
|     const chatStarted = computed(() => transcript.value.length > 0) | ||||
|  | ||||
| @@ -93,79 +94,13 @@ | ||||
|       return String(str).replaceAll(/\{\{(.*?)\}\}/g, (_, key) => template(params[key])); | ||||
|     } | ||||
|  | ||||
|     const llamaCompletionStream = async (params) => { | ||||
|       controller.value = new AbortController(); | ||||
|       const sig = controller.value.signal; | ||||
|  | ||||
|       const data = JSON.stringify({ | ||||
|         stream: true, | ||||
|         prompt: params.prompt, | ||||
|         n_predict: parseInt(nPredict.value), | ||||
|         temperature: parseFloat(temperature.value), | ||||
|         stop: ["</s>", template("{{bot}}:"), template("{{user}}:")] | ||||
|       }); | ||||
|  | ||||
|       // we use fetch directly here becasue the built in fetchEventSource does not support POST | ||||
|       const response = await fetch("/completion", { | ||||
|         method: 'POST', | ||||
|         body: data, | ||||
|         headers: { | ||||
|           'Connection': 'keep-alive', | ||||
|           'Content-Type': 'application/json', | ||||
|           'Accept': 'text/event-stream' | ||||
|         }, | ||||
|         signal: sig, | ||||
|       }); | ||||
|  | ||||
|       const reader = response.body.getReader(); | ||||
|       const decoder = new TextDecoder(); | ||||
|  | ||||
|       try { | ||||
|  | ||||
|         while (true) { | ||||
|           const result = await reader.read(); | ||||
|           if (result.done) { | ||||
|             break; | ||||
|           } | ||||
|  | ||||
|           // sse answers in the form multiple lines of: value\n with data always present as a key. in our case we | ||||
|           // mainly care about the data: key here, which we expect as json | ||||
|           const text = decoder.decode(result.value); | ||||
|  | ||||
|           // parse all sse events and add them to result | ||||
|           const regex = /^(\S+):\s(.*)$/gm; | ||||
|           for (const match of text.matchAll(regex)) { | ||||
|             result[match[1]] = match[2] | ||||
|           } | ||||
|  | ||||
|           // since we know this is llama.cpp, let's just decode the json in data | ||||
|           result.data = JSON.parse(result.data); | ||||
|  | ||||
|           // callack | ||||
|           params.onmessage(result); | ||||
|  | ||||
|           // if we got a stop token from server, we will break here | ||||
|           if (result.data.stop) { | ||||
|             break; | ||||
|           } | ||||
|         } | ||||
|       } catch (e) { | ||||
|         console.error(e); | ||||
|         throw e; | ||||
|       } | ||||
|       finally { | ||||
|         controller.value.abort(); | ||||
|         controller.value = null; | ||||
|       } | ||||
|     } | ||||
|  | ||||
|  | ||||
|     // send message to server | ||||
|     const chat = async (msg) => { | ||||
|       if (controller.value) { | ||||
|         console.log('already running...'); | ||||
|         return; | ||||
|       } | ||||
|       controller.value = new AbortController(); | ||||
|       transcript.value = [...transcript.value, ['{{user}}', msg]]; | ||||
|  | ||||
|       const payload = template(chatTemplate.value, { | ||||
| @@ -176,9 +111,14 @@ | ||||
|       let currentMessage = ''; | ||||
|       let history = transcript.value; | ||||
|  | ||||
|       llamaCompletionStream({ | ||||
|       const params = { | ||||
|         prompt: payload, | ||||
|         onmessage: (message) => { | ||||
|         n_predict: parseInt(nPredict.value), | ||||
|         temperature: parseFloat(temperature.value), | ||||
|         stop: ["</s>", template("{{bot}}:"), template("{{user}}:")], | ||||
|       } | ||||
|  | ||||
|       await llamaComplete(params, controller.value, (message) => { | ||||
|         const data = message.data; | ||||
|         currentMessage += data.content; | ||||
|  | ||||
| @@ -187,8 +127,9 @@ | ||||
|         if (data.stop) { | ||||
|           console.log("-->", data, ' response was:', currentMessage, 'transcript state:', transcript.value); | ||||
|         } | ||||
|         } | ||||
|       }); | ||||
|       }) | ||||
|  | ||||
|       controller.value = null; | ||||
|     } | ||||
|  | ||||
|     function MessageInput() { | ||||
|   | ||||
| @@ -13,6 +13,7 @@ | ||||
| // auto generated files (update with ./deps.sh) | ||||
| #include "index.html.hpp" | ||||
| #include "index.js.hpp" | ||||
| #include "completion.js.hpp" | ||||
|  | ||||
| #ifndef SERVER_VERBOSE | ||||
| #define SERVER_VERBOSE 1 | ||||
| @@ -872,6 +873,7 @@ static void log_server_request(const Request & req, const Response & res) { | ||||
|     }); | ||||
| } | ||||
|  | ||||
|  | ||||
| int main(int argc, char ** argv) { | ||||
|     // own arguments required by this example | ||||
|     gpt_params params; | ||||
| @@ -923,6 +925,12 @@ int main(int argc, char ** argv) { | ||||
|         return false; | ||||
|     }); | ||||
|  | ||||
|     // this is only called if no index.html is found in the public --path | ||||
|     svr.Get("/completion.js", [](const Request &, Response & res) { | ||||
|         res.set_content(reinterpret_cast<const char*>(&completion_js), completion_js_len, "application/javascript"); | ||||
|         return false; | ||||
|     }); | ||||
|  | ||||
|     svr.Post("/completion", [&llama](const Request & req, Response & res) { | ||||
|         auto lock = llama.lock(); | ||||
|  | ||||
| @@ -1078,6 +1086,12 @@ int main(int argc, char ** argv) { | ||||
|         res.status = 500; | ||||
|     }); | ||||
|  | ||||
|     svr.set_error_handler([](const Request &, Response & res) { | ||||
|         res.set_content("File Not Found", "text/plain"); | ||||
|         res.status = 404; | ||||
|     }); | ||||
|  | ||||
|  | ||||
|     // set timeouts and change hostname and port | ||||
|     svr.set_read_timeout(sparams.read_timeout); | ||||
|     svr.set_write_timeout(sparams.write_timeout); | ||||
|   | ||||
		Reference in New Issue
	
	Block a user
	 Tobias Lütke
					Tobias Lütke