Preserve per-source pacing across queue jobs and add source pause

scraper/test/source-pause.test.js

@@ -0,0 +1,26 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs/promises');
+const os = require('node:os');
+const path = require('node:path');
+const { ScraperService } = require('../service');
+
+test('an operator can pause one source while other lanes continue', async t => {
+  const root = await fs.mkdtemp(path.join(os.tmpdir(), 'mc-source-pause-'));
+  const service = await new ScraperService({ libraryRoot: path.join(root, 'library'),
+    dataRoot: path.join(root, 'data') }).init();
+  t.after(async () => { await service.close(); await fs.rm(root, { recursive: true, force: true }); });
+  await assert.rejects(service.control('pause-source', 'unknown'), /Unknown source/);
+  await service.control('pause-source', 'weebcentral');
+  assert.equal(service.state.sourcePaused.weebcentral, true);
+  await service.control('resume');
+  assert.equal(service.state.paused, false);
+  assert.equal(service.state.sourcePaused.weebcentral, true);
+  service.state.queue.push({ source: 'weebcentral', status: 'error', failure: { kind: 'access' } });
+  await assert.rejects(service.control('resume-source', 'weebcentral'), /access block/);
+  service.state.queue.pop();
+  await service.control('resume-source', 'weebcentral');
+  assert.equal(service.state.sourcePaused.weebcentral, undefined);
+});