104 lines
3.9 KiB
JavaScript
104 lines
3.9 KiB
JavaScript
// 复刻后端 yuxi/utils/subagent_thread_utils.py 的 make_child_thread_id：
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// child_thread_id = "subagent_" + sha256("{parent}:{slug}:{tool_call_id}")[:55]
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// 子智能体由 graph.ainvoke 独立调用，流式事件不带 tool_call_id，前端据此自行推算 child_thread_id。
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const PREFIX = 'subagent_'
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const DIGEST_LENGTH = 64 - PREFIX.length
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const SHA256_K = [
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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]
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const rightRotate = (value, shift) => ((value >>> shift) | (value << (32 - shift))) >>> 0
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const bytesToHex = (bytes) =>
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Array.from(bytes)
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.map((byte) => byte.toString(16).padStart(2, '0'))
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.join('')
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const sha256Hex = (bytes) => {
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const paddedLength = Math.ceil((bytes.length + 9) / 64) * 64
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const padded = new Uint8Array(paddedLength)
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padded.set(bytes)
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padded[bytes.length] = 0x80
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const view = new DataView(padded.buffer)
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const bitLength = bytes.length * 8
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view.setUint32(paddedLength - 8, Math.floor(bitLength / 0x100000000))
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view.setUint32(paddedLength - 4, bitLength >>> 0)
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const words = new Uint32Array(64)
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const hash = [
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0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
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]
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for (let offset = 0; offset < paddedLength; offset += 64) {
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for (let index = 0; index < 16; index += 1) {
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words[index] = view.getUint32(offset + index * 4)
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}
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for (let index = 16; index < 64; index += 1) {
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const s0 =
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rightRotate(words[index - 15], 7) ^
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rightRotate(words[index - 15], 18) ^
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(words[index - 15] >>> 3)
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const s1 =
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rightRotate(words[index - 2], 17) ^
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rightRotate(words[index - 2], 19) ^
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(words[index - 2] >>> 10)
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words[index] = (words[index - 16] + s0 + words[index - 7] + s1) >>> 0
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}
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let [a, b, c, d, e, f, g, h] = hash
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for (let index = 0; index < 64; index += 1) {
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const s1 = rightRotate(e, 6) ^ rightRotate(e, 11) ^ rightRotate(e, 25)
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const ch = (e & f) ^ (~e & g)
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const temp1 = (h + s1 + ch + SHA256_K[index] + words[index]) >>> 0
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const s0 = rightRotate(a, 2) ^ rightRotate(a, 13) ^ rightRotate(a, 22)
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const maj = (a & b) ^ (a & c) ^ (b & c)
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const temp2 = (s0 + maj) >>> 0
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h = g
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g = f
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f = e
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e = (d + temp1) >>> 0
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d = c
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c = b
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b = a
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a = (temp1 + temp2) >>> 0
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}
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hash[0] = (hash[0] + a) >>> 0
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hash[1] = (hash[1] + b) >>> 0
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hash[2] = (hash[2] + c) >>> 0
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hash[3] = (hash[3] + d) >>> 0
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hash[4] = (hash[4] + e) >>> 0
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hash[5] = (hash[5] + f) >>> 0
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hash[6] = (hash[6] + g) >>> 0
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hash[7] = (hash[7] + h) >>> 0
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}
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return hash.map((word) => word.toString(16).padStart(8, '0')).join('')
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}
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const digestSha256Hex = async (bytes) => {
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const subtle = globalThis.crypto?.subtle
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if (typeof subtle?.digest === 'function') {
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const buffer = await subtle.digest('SHA-256', bytes)
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return bytesToHex(new Uint8Array(buffer))
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}
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return sha256Hex(bytes)
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}
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export async function makeChildThreadId(parentThreadId, agentSlug, toolCallId) {
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if (!parentThreadId || !agentSlug || !toolCallId) return ''
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const data = new TextEncoder().encode(`${parentThreadId}:${agentSlug}:${toolCallId}`)
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const hex = await digestSha256Hex(data)
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return `${PREFIX}${hex.slice(0, DIGEST_LENGTH)}`
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}
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