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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| import { getUserConfig } from '../../config/index.mjs' | ||
| import { getChatSystemPromptBase, pushRecord, setAbortController } from './shared.mjs' | ||
| import { getConversationPairs } from '../../utils/get-conversation-pairs.mjs' | ||
| import { fetchSSE } from '../../utils/fetch-sse.mjs' | ||
| import { isEmpty } from 'lodash-es' | ||
|
|
||
| /** | ||
| * @param {Runtime.Port} port | ||
| * @param {string} question | ||
| * @param {Session} session | ||
| */ | ||
| export async function generateAnswersWithClaudeApi(port, question, session) { | ||
| const { controller, messageListener, disconnectListener } = setAbortController(port) | ||
| const config = await getUserConfig() | ||
|
|
||
| const prompt = getConversationPairs( | ||
| session.conversationRecords.slice(-config.maxConversationContextLength), | ||
| false, | ||
| ) | ||
| prompt.unshift({ role: 'Assistant', content: await getChatSystemPromptBase() }) | ||
| prompt.push({ role: 'Human', content: question }) | ||
|
|
||
| let answer = '' | ||
| await fetchSSE( | ||
| `https://api.anthropic.com/v1/complete`, | ||
| { | ||
| method: 'POST', | ||
| signal: controller.signal, | ||
| headers: { | ||
| 'Content-Type': 'application/json', | ||
| 'accept': 'application/json', | ||
| 'anthropic-version': '2023-06-01', | ||
| 'x-api-key': config.claudeApiKey, | ||
| }, | ||
| body: JSON.stringify({ | ||
| model: "claude-2", | ||
| prompt: "\n\nHuman: " + question + "\n\nAssistant:", | ||
| stream: true, | ||
| max_tokens_to_sample: config.maxResponseTokenLength, | ||
| temperature: config.temperature, | ||
| }), | ||
| onMessage(message) { | ||
| console.debug('sse message', message); | ||
|
|
||
| let data; | ||
| try { | ||
| data = JSON.parse(message); | ||
| } catch (error) { | ||
| console.debug('json error', error); | ||
| return; | ||
| } | ||
|
|
||
| // The Claude v2 API may send metadata fields, handle them here | ||
| if (data.conversationId) session.conversationId = data.conversationId; | ||
| if (data.parentMessageId) session.parentMessageId = data.parentMessageId; | ||
|
|
||
| // In Claude's case, the "completion" key holds the text | ||
| if (data.completion) { | ||
| answer += data.completion; | ||
| port.postMessage({ answer: answer, done: false, session: null }); | ||
| } | ||
|
|
||
| // Check if the message indicates that Claude is done | ||
| if (data.stop_reason === 'stop_sequence') { | ||
| pushRecord(session, question, answer); | ||
| console.debug('conversation history', { content: session.conversationRecords }); | ||
| port.postMessage({ answer: null, done: true, session: session }); | ||
| } | ||
| }, | ||
| async onStart() {}, | ||
| async onEnd() { | ||
| port.postMessage({ done: true }) | ||
| port.onMessage.removeListener(messageListener) | ||
| port.onDisconnect.removeListener(disconnectListener) | ||
| }, | ||
| async onError(resp) { | ||
| port.onMessage.removeListener(messageListener) | ||
| port.onDisconnect.removeListener(disconnectListener) | ||
| if (resp instanceof Error) throw resp | ||
| const error = await resp.json().catch(() => ({})) | ||
| throw new Error( | ||
| !isEmpty(error) ? JSON.stringify(error) : `${resp.status} ${resp.statusText}`, | ||
| ) | ||
| }, | ||
| }, | ||
| ) | ||
| } |