Deliver posts to remote followers

src/processor/http/deliver-post.ts

@@ -0,0 +1,94 @@
+import Channel from '../../models/channel';
+import Following from '../../models/following';
+import ChannelWatching from '../../models/channel-watching';
+import Post, { pack } from '../../models/post';
+import User, { isLocalUser } from '../../models/user';
+import stream, { publishChannelStream } from '../../publishers/stream';
+import context from '../../remote/activitypub/renderer/context';
+import renderNote from '../../remote/activitypub/renderer/note';
+import request from '../../remote/request';
+
+export default ({ data }) => Post.findOne({ _id: data.id }).then(post => {
+	const promisedPostObj = pack(post);
+	const promises = [];
+
+	// タイムラインへの投稿
+	if (!post.channelId) {
+		promises.push(
+			// Publish event to myself's stream
+			promisedPostObj.then(postObj => {
+				stream(post.userId, 'post', postObj);
+			}),
+
+			Promise.all([
+				User.findOne({ _id: post.userId }),
+
+				// Fetch all followers
+				Following.aggregate([
+					{
+						$lookup: {
+							from: 'users',
+							localField: 'followerId',
+							foreignField: '_id',
+							as: 'follower'
+						}
+					},
+					{
+					$match: {
+							followeeId: post.userId
+						}
+					}
+				], {
+					_id: false
+				})
+			]).then(([user, followers]) => Promise.all(followers.map(following => {
+				if (isLocalUser(following.follower)) {
+					// Publish event to followers stream
+					return promisedPostObj.then(postObj => {
+						stream(following.followerId, 'post', postObj);
+					});
+				}
+
+				return renderNote(user, post).then(rendered => {
+					rendered['@context'] = context;
+					return request(user, following.follower[0].account.inbox, rendered);
+				});
+			})))
+		);
+	}
+
+	// チャンネルへの投稿
+	if (post.channelId) {
+		promises.push(
+			// Increment channel index(posts count)
+			Channel.update({ _id: post.channelId }, {
+				$inc: {
+					index: 1
+				}
+			}),
+
+			// Publish event to channel
+			promisedPostObj.then(postObj => {
+				publishChannelStream(post.channelId, 'post', postObj);
+			}),
+
+			Promise.all([
+				promisedPostObj,
+
+				// Get channel watchers
+				ChannelWatching.find({
+					channelId: post.channelId,
+					// 削除されたドキュメントは除く
+					deletedAt: { $exists: false }
+				})
+			]).then(([postObj, watches]) => {
+				// チャンネルの視聴者(のタイムライン)に配信
+				watches.forEach(w => {
+					stream(w.userId, 'post', postObj);
+				});
+			})
+		);
+	}
+
+	return Promise.all(promises);
+});

src/processor/http/follow.ts

@@ -1,6 +1,3 @@
-import { request } from 'https';
-import { sign } from 'http-signature';
-import { URL } from 'url';
 import User, { isLocalUser, pack as packUser } from '../../models/user';
 import Following from '../../models/following';
 import FollowingLog from '../../models/following-log';
@@ -9,7 +6,7 @@ import event from '../../publishers/stream';
 import notify from '../../publishers/notify';
 import context from '../../remote/activitypub/renderer/context';
 import render from '../../remote/activitypub/renderer/follow';
-import config from '../../config';
+import request from '../../remote/request';
 
 export default ({ data }) => Following.findOne({ _id: data.following }).then(({ followerId, followeeId }) => {
 	const promisedFollower = User.findOne({ _id: followerId });
@@ -60,45 +57,10 @@ export default ({ data }) => Following.findOne({ _id: data.following }).then(({
 				followeeEvent = packUser(follower, followee)
 					.then(packed => event(followee._id, 'followed', packed));
 			} else if (isLocalUser(follower)) {
-				followeeEvent = new Promise((resolve, reject) => {
-					const {
-						protocol,
-						hostname,
-						port,
-						pathname,
-						search
-					} = new URL(followee.account.inbox);
+				const rendered = render(follower, followee);
+				rendered['@context'] = context;
 
-					const req = request({
-						protocol,
-						hostname,
-						port,
-						method: 'POST',
-						path: pathname + search,
-					}, res => {
-						res.on('close', () => {
-							if (res.statusCode >= 200 && res.statusCode < 300) {
-								resolve();
-							} else {
-								reject(res);
-							}
-						});
-
-						res.on('data', () => {});
-						res.on('error', reject);
-					});
-
-					sign(req, {
-						authorizationHeaderName: 'Signature',
-						key: follower.account.keypair,
-						keyId: `acct:${follower.username}@${config.host}`
-					});
-
-					const rendered = render(follower, followee);
-					rendered['@context'] = context;
-
-					req.end(JSON.stringify(rendered));
-				});
+				followeeEvent = request(follower, followee.account.inbox, rendered);
 			}
 
 			return Promise.all([followerEvent, followeeEvent]);

src/processor/http/index.ts

@@ -1,9 +1,11 @@
+import deliverPost from './deliver-post';
 import follow from './follow';
 import performActivityPub from './perform-activitypub';
 import processInbox from './process-inbox';
 import reportGitHubFailure from './report-github-failure';
 
 const handlers = {
+  deliverPost,
   follow,
   performActivityPub,
   processInbox,