fix(backend/ApNoteService): try retrieving again when failed by duplication

packages/backend/src/core/activitypub/models/ApNoteService.ts

@@ -131,13 +131,13 @@ export class ApNoteService {
 		this.logger.debug(`Note fetched: ${JSON.stringify(note, null, 2)}`);
 
 		if (note.id && !checkHttps(note.id)) {
-			throw new Error('unexpected shcema of note.id: ' + note.id);
+			throw new Error('unexpected schema of note.id: ' + note.id);
 		}
 
 		const url = getOneApHrefNullable(note.url);
 
 		if (url && !checkHttps(url)) {
-			throw new Error('unexpected shcema of note url: ' + url);
+			throw new Error('unexpected schema of note url: ' + url);
 		}
 
 		this.logger.info(`Creating the Note: ${note.id}`);
@@ -271,6 +271,7 @@ export class ApNoteService {
 
 		const poll = await this.apQuestionService.extractPollFromQuestion(note, resolver).catch(() => undefined);
 
+		try {
 			return await this.noteCreateService.create(actor, {
 				createdAt: note.published ? new Date(note.published) : null,
 				files,
@@ -289,6 +290,17 @@ export class ApNoteService {
 				uri: note.id,
 				url: url,
 			}, silent);
+		} catch (err: any) {
+			if (err.name !== 'duplicated') {
+				throw err;
+			}
+			this.logger.info('The note is already inserted while creating itself, reading again');
+			const duplicate = await this.fetchNote(value);
+			if (!duplicate) {
+				throw new Error('The note creation failed with duplication error even when there is no duplication');
+			}
+			return duplicate;
+		}
 	}
 
 	/**

packages/backend/test/unit/activitypub.ts

@@ -259,6 +259,21 @@ describe('ActivityPub', () => {
 			assert.strictEqual(note.text, 'test test foo');
 			assert.strictEqual(note.uri, actor2Note.id);
 		});
+
+		test('Fetch a note that is a featured note of the attributed actor', async () => {
+			const actor = createRandomActor();
+			actor.featured = `${actor.id}/collections/featured`;
+
+			const featured = createRandomFeaturedCollection(actor, 5);
+			const firstNote = (featured.items as NonTransientIPost[])[0];
+
+			resolver.register(actor.id, actor);
+			resolver.register(actor.featured, featured);
+			resolver.register(firstNote.id, firstNote);
+
+			const note = await noteService.createNote(firstNote.id as string, resolver);
+			assert.strictEqual(note?.uri, firstNote.id);
+		});
 	});
 
 	describe('Images', () => {