Resolve #4151

1 files changed, 90 insertions, 0 deletions

diff --git a/src/queue/processors/export-blocking.ts b/src/queue/processors/export-blocking.ts
new file mode 100644
index 0000000000..b7a2d3122f
--- /dev/null
+++ b/src/queue/processors/export-blocking.ts
@@ -0,0 +1,90 @@
+
+import * as bq from 'bee-queue';
+import * as tmp from 'tmp';
+import * as fs from 'fs';
+import * as mongo from 'mongodb';
+
+import { queueLogger } from '../logger';
+import addFile from '../../services/drive/add-file';
+import User from '../../models/user';
+import dateFormat = require('dateformat');
+import Blocking from '../../models/blocking';
+import config from '../../config';
+
+const logger = queueLogger.createSubLogger('export-blocking');
+
+export async function exportBlocking(job: bq.Job, done: any): Promise<void> {
+	logger.info(`Exporting blocking of ${job.data.user._id} ...`);
+
+	const user = await User.findOne({
+		_id: new mongo.ObjectID(job.data.user._id.toString())
+	});
+
+	// Create temp file
+	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
+		tmp.file((e, path, fd, cleanup) => {
+			if (e) return rej(e);
+			res([path, cleanup]);
+		});
+	});
+
+	logger.info(`Temp file is ${path}`);
+
+	const stream = fs.createWriteStream(path, { flags: 'a' });
+
+	let exportedCount = 0;
+	let ended = false;
+	let cursor: any = null;
+
+	while (!ended) {
+		const blockings = await Blocking.find({
+			blockerId: user._id,
+			...(cursor ? { _id: { $gt: cursor } } : {})
+		}, {
+			limit: 100,
+			sort: {
+				_id: 1
+			}
+		});
+
+		if (blockings.length === 0) {
+			ended = true;
+			job.reportProgress(100);
+			break;
+		}
+
+		cursor = blockings[blockings.length - 1]._id;
+
+		for (const block of blockings) {
+			const u = await User.findOne({ _id: block.blockeeId }, { fields: { username: true, host: true } });
+			const content = u.host ? `${u.username}@${u.host}` : `${u.username}@${config.host}`;
+			await new Promise((res, rej) => {
+				stream.write(content + '\n', err => {
+					if (err) {
+						logger.error(err);
+						rej(err);
+					} else {
+						res();
+					}
+				});
+			});
+			exportedCount++;
+		}
+
+		const total = await Blocking.count({
+			blockerId: user._id,
+		});
+
+		job.reportProgress(exportedCount / total);
+	}
+
+	stream.end();
+	logger.succ(`Exported to: ${path}`);
+
+	const fileName = dateFormat(new Date(), 'blocking-yyyy-mm-dd-HH-MM-ss') + '.json';
+	const driveFile = await addFile(user, path, fileName);
+
+	logger.succ(`Exported to: ${driveFile._id}`);
+	cleanup();
+	done();
+}