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优化功能

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This commit is contained in:
Vinlic 2024-03-08 21:38:04 +08:00
parent 78b267c3e8
commit 9a50c30ef7
4 changed files with 125 additions and 52 deletions
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1
package.json
View File

@ -14,6 +14,7 @@
],
"scripts": {
"dev": "tsup src/index.ts --format cjs,esm --sourcemap --dts --publicDir public --watch --onSuccess \"node dist/index.js\"",
"start": "node dist/index.js",
"build": "tsup src/index.ts --format cjs,esm --sourcemap --dts --clean --publicDir public"
},
"author": "Vinlic",

1
src/api/consts/exceptions.ts
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@ -2,4 +2,5 @@ export default {
API_TEST: [-9999, 'API异常错误'],
API_REQUEST_PARAMS_INVALID: [-2000, '请求参数非法'],
API_REQUEST_FAILED: [-2001, '请求失败'],
API_TOKEN_EXPIRES: [-2002, 'Token已失效']
}

154
src/api/controllers/chat.ts
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@ -8,69 +8,70 @@ import { createParser } from 'eventsource-parser'
import logger from '@/lib/logger.ts';
import util from '@/lib/util.ts';
const TOKEN_EXPIRES = 120;
let currentAccessToken: string | null = null;
let currentRefreshToken: string | null = null;
let latestRefreshTime = 0;
const ACCESS_TOKEN_EXPIRES = 300;
const accessTokenMap = new Map();
function setRefreshToken(refreshToken: string) {
currentRefreshToken = refreshToken || 'eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJ1c2VyLWNlbnRlciIsImV4cCI6MTcxNzY2NzkzMSwiaWF0IjoxNzA5ODkxOTMxLCJqdGkiOiJjbmxlMm1wcmRpamFpbGxzcHJuMCIsInR5cCI6InJlZnJlc2giLCJzdWIiOiJjbmVyMGgybG5sOTU3N3MzMmluZyIsInNwYWNlX2lkIjoiY25lcXA1ODNyMDdkajd1a3JqcjAiLCJhYnN0cmFjdF91c2VyX2lkIjoiY25lcXA1ODNyMDdkajd1a3JqcWcifQ.XMDecAmBq817_n3xtRqIwIlS9QQLIClS1PaVh4EY8bqhiHr8SxFxbiTEyuRuPPTnCB90eUJNc_LchLMjUo8cKA';
}
async function refreshToken() {
const refreshToken = currentRefreshToken;
async function requestToken(refreshToken: string) {
const result = await axios.get('https://kimi.moonshot.cn/api/auth/token/refresh', {
headers: {
Authorization: `Bearer ${refreshToken}`
}
},
validateStatus: () => true
});
const {
access_token,
refresh_token
} = checkResult(result);
currentAccessToken = access_token;
currentRefreshToken = refresh_token;
logger.info(`Current access_token: ${currentAccessToken}`);
logger.info(`Current refresh_token: ${currentRefreshToken}`);
logger.success('Token refresh completed');
} = checkResult(result, refreshToken);
return {
accessToken: access_token,
refreshToken: refresh_token,
refreshTime: util.unixTimestamp() + ACCESS_TOKEN_EXPIRES
}
}
async function requestToken() {
if (util.unixTimestamp() - latestRefreshTime > TOKEN_EXPIRES)
await refreshToken();
return currentAccessToken;
async function acquireToken(refreshToken: string): Promise<string> {
let result = accessTokenMap.get(refreshToken);
if (!result) {
result = await requestToken(refreshToken);
accessTokenMap.set(refreshToken, result);
}
if (util.unixTimestamp() > result.refreshTime)
result = await requestToken(refreshToken);
return result.accessToken;
}
async function createConversation(name: string) {
const token = await requestToken();
async function createConversation(name: string, refreshToken: string) {
const token = await acquireToken(refreshToken);
const result = await axios.post('https://kimi.moonshot.cn/api/chat', {
name,
is_example: false
}, {
headers: {
Authorization: `Bearer ${token}`
}
},
validateStatus: () => true
});
const {
id: convId
} = checkResult(result);
} = checkResult(result, refreshToken);
return convId;
}
async function removeConversation(convId: string) {
const token = await requestToken();
async function removeConversation(convId: string, refreshToken: string) {
const token = await acquireToken(refreshToken);
const result = await axios.delete(`https://kimi.moonshot.cn/api/chat/${convId}`, {
headers: {
Authorization: `Bearer ${token}`
}
},
validateStatus: () => true
});
checkResult(result);
checkResult(result, refreshToken);
}
async function createCompletionStream(messages: any[], useSearch = true) {
console.log(messages);
const convId = await createConversation(`cmpl-${util.uuid(false)}`);
const token = await requestToken();
async function createCompletion(messages: any[], refreshToken: string, useSearch = true) {
logger.info(messages);
const convId = await createConversation(`cmpl-${util.uuid(false)}`, refreshToken);
const token = await acquireToken(refreshToken);
const result = await axios.post(`https://kimi.moonshot.cn/api/chat/${convId}/completion/stream`, {
messages,
use_search: useSearch
@ -78,25 +79,87 @@ async function createCompletionStream(messages: any[], useSearch = true) {
headers: {
Authorization: `Bearer ${token}`
},
validateStatus: () => true,
responseType: 'stream'
});
return createTransStream(convId, result.data);
const answer = await receiveStream(convId, result.data);
removeConversation(convId, refreshToken)
.catch(err => console.error(err));
return answer;
}
function checkResult(result: AxiosResponse) {
if(!result.data)
async function createCompletionStream(messages: any[], refreshToken: string, useSearch = true) {
logger.info(messages);
const convId = await createConversation(`cmpl-${util.uuid(false)}`, refreshToken);
const token = await acquireToken(refreshToken);
const result = await axios.post(`https://kimi.moonshot.cn/api/chat/${convId}/completion/stream`, {
messages,
use_search: useSearch
}, {
headers: {
Authorization: `Bearer ${token}`
},
validateStatus: () => true,
responseType: 'stream'
});
return createTransStream(convId, result.data, () => {
removeConversation(convId, refreshToken)
.catch(err => console.error(err));
});
}
function checkResult(result: AxiosResponse, refreshToken: string) {
if(result.status == 401) {
accessTokenMap.delete(refreshToken);
throw new APIException(EX.API_REQUEST_FAILED);
}
if (!result.data)
return null;
const { error_type, message } = result.data;
if (!_.isString(error_type))
return result.data;
console.log(result.data);
throw new APIException(EX.API_REQUEST_FAILED, message);
if (error_type == 'auth.token.invalid')
accessTokenMap.delete(refreshToken);
throw new APIException(EX.API_REQUEST_FAILED, `[请求kimi失败]: ${message}`);
}
function createTransStream(convId: string, stream: any) {
async function receiveStream(convId: string, stream: any) {
return new Promise((resolve, reject) => {
const data = {
id: convId,
model: 'kimi',
object: 'chat.completion',
choices: [
{ index: 0, message: { role: 'assistant', content: '' }, finish_reason: 'stop' }
],
created: parseInt(performance.now() as any)
};
const parser = createParser(event => {
try {
if (event.type !== "event") return;
const result = _.attempt(() => JSON.parse(event.data));
if (_.isError(result))
throw new Error(`stream response invalid: ${event.data}`);
if (result.event == 'cmpl') {
data.choices[0].message.content += result.text;
}
else if (result.event == 'all_done')
resolve(data);
}
catch (err) {
logger.error(err);
reject(err);
}
});
stream.on("data", buffer => parser.feed(buffer.toString()));
stream.once("error", err => reject(err));
stream.once("close", () => resolve(data));
});
}
function createTransStream(convId: string, stream: any, endCallback?: Function) {
const created = parseInt(performance.now() as any);
const transStream = new PassThrough();
!transStream.closed && transStream.write(`data: ${JSON.stringify({
id: convId,
model: 'kimi',
@ -135,8 +198,8 @@ function createTransStream(convId: string, stream: any) {
created
})}\n\n`;
!transStream.closed && transStream.write(data);
!transStream.closed && transStream.end('[DONE]');
removeConversation(convId).catch(err => console.error(err));
!transStream.closed && transStream.end('data: [DONE]\n\n');
endCallback && endCallback();
}
}
catch (err) {
@ -145,14 +208,13 @@ function createTransStream(convId: string, stream: any) {
}
});
stream.on("data", buffer => parser.feed(buffer.toString()));
stream.once("error", () => !transStream.closed && transStream.end('[DONE]'));
stream.once("close", () => !transStream.closed && transStream.end('[DONE]'));
stream.once("error", () => !transStream.closed && transStream.end('data: [DONE]\n\n'));
stream.once("close", () => !transStream.closed && transStream.end('data: [DONE]\n\n'));
return transStream;
}
export default {
setRefreshToken,
refreshToken,
createConversation,
createCompletion,
createCompletionStream
};

19
src/api/routes/chat.ts
View File

@ -3,6 +3,7 @@ import _ from 'lodash';
import Request from '@/lib/request/Request.ts';
import Response from '@/lib/response/Response.ts';
import chat from '@/api/controllers/chat.ts';
import logger from '@/lib/logger.ts';
export default {
@ -13,11 +14,19 @@ export default {
'/completions': async (request: Request) => {
request
.validate('body.messages', _.isArray)
chat.setRefreshToken(request.body.refresh_token);
const stream = await chat.createCompletionStream(request.body.messages, request.body.use_search);
return new Response(stream, {
type: "text/event-stream"
});
.validate('headers.authorization', _.isString)
const token = request.headers.authorization;
const refreshToken = token.replace('Bearer ', '');
logger.info(`Refresh token: ${refreshToken}`);
const messages = request.body.messages;
if (request.body.stream) {
const stream = await chat.createCompletionStream(request.body.messages, refreshToken, request.body.use_search);
return new Response(stream, {
type: "text/event-stream"
});
}
else
return await chat.createCompletion(messages, refreshToken, request.body.use_search);
}
}