George Lambert
8f9707a3b7
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Each module has SUMMARY.md and NATS.md (who sends/receives, subject addresses, payload). Tests: splitter 3, worm 3, aggregator 2. Forgejo repos pushed separately; this commit keeps them in the monorepo.
71 lines
1.9 KiB
JavaScript
71 lines
1.9 KiB
JavaScript
/**
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* Split a Zapier/middleware request into chain vs archive parts.
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* @module splitRequest
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*/
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import { createHash } from 'node:crypto';
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/**
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* @param {string} data
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* @returns {string}
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*/
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export function sha256Hex(data) {
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return createHash('sha256').update(String(data), 'utf8').digest('hex');
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}
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/**
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* @param {object} body
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* @returns {{
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* chain: { sha256: string, hashAlg: string, data?: string },
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* archivePuts: Array<{ kind: string, sha256: string, record: object }>,
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* includeAttached: boolean
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* }}
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*/
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export function splitRequest(body = {}) {
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const sha256 = (body.sha256 || (body.data != null ? sha256Hex(body.data) : '')).toLowerCase();
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if (!sha256) {
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throw new Error('data or sha256 is required');
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}
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const includeAttached = Boolean(body.includeAttached);
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const archivePuts = [];
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if (body.publicMetadata && Object.keys(body.publicMetadata).length) {
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archivePuts.push({
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kind: 'publicMeta',
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sha256,
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record: { publicMetadata: body.publicMetadata },
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});
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}
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if (body.privateMetadata && Object.keys(body.privateMetadata).length) {
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archivePuts.push({
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kind: 'privateMeta',
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sha256,
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record: { privateMetadata: body.privateMetadata },
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});
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}
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const files = Array.isArray(body.files) ? body.files : [];
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for (const f of files) {
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const bytes = f.contentBase64
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? Buffer.from(String(f.contentBase64), 'base64')
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: Buffer.from(String(f.data ?? ''), 'utf8');
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const fileHash = sha256Hex(bytes);
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archivePuts.push({
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kind: 'file',
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sha256,
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record: {
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path: f.path || f.filename || 'file.bin',
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size: bytes.length,
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contentSha256: fileHash,
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contentBase64: bytes.toString('base64'),
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},
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});
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}
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return {
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chain: {
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sha256,
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hashAlg: body.hashAlg || 'SHA256',
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data: body.data,
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},
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archivePuts,
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includeAttached,
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};
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}
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