Gearheads: bump to v4.1.6

CHANGELOG.md

@@ -3,6 +3,14 @@ Changelog
 
 All notable changes to this project will be documented in this file.
 
+## [4.1.6] - 2023-07-28
+
+### Fixed
+
+- Fix memory leak in streaming server ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26228))
+- Fix wrong filters sometimes applying in streaming ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26159), [ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26213), [renchap](https://github.com/mastodon/mastodon/pull/26233))
+- Fix incorrect connect timeout in outgoing requests ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26116))
+
 ## [4.1.5] - 2023-07-21
 
 ### Added

app/lib/request.rb

@@ -285,11 +285,11 @@ class Request
         end
 
         until socks.empty?
-          _, available_socks, = IO.select(nil, socks, nil, Request::TIMEOUT[:connect])
+          _, available_socks, = IO.select(nil, socks, nil, Request::TIMEOUT[:connect_timeout])
 
           if available_socks.nil?
             socks.each(&:close)
-            raise HTTP::TimeoutError, "Connect timed out after #{Request::TIMEOUT[:connect]} seconds"
+            raise HTTP::TimeoutError, "Connect timed out after #{Request::TIMEOUT[:connect_timeout]} seconds"
           end
 
           available_socks.each do |sock|

docker-compose.yml

@@ -56,7 +56,7 @@ services:
 
   web:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.5
+    image: ghcr.io/mastodon/mastodon:v4.1.6
     restart: always
     env_file: .env.production
     command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 3000"
@@ -77,7 +77,7 @@ services:
 
   streaming:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.5
+    image: ghcr.io/mastodon/mastodon:v4.1.6
     restart: always
     env_file: .env.production
     command: node ./streaming
@@ -95,7 +95,7 @@ services:
 
   sidekiq:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.5
+    image: ghcr.io/mastodon/mastodon:v4.1.6
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq

lib/mastodon/version.rb

@@ -13,7 +13,7 @@ module Mastodon
     end
 
     def patch
-      5
+      6
     end
 
     def flags

streaming/index.js

@@ -226,9 +226,15 @@ const startWorker = async (workerId) => {
     callbacks.forEach(callback => callback(json));
   };
 
+  /**
+   * @callback SubscriptionListener
+   * @param {ReturnType<parseJSON>} json of the message
+   * @returns void
+   */
+
   /**
    * @param {string} channel
-   * @param {function(string): void} callback
+   * @param {SubscriptionListener} callback
    */
   const subscribe = (channel, callback) => {
     log.silly(`Adding listener for ${channel}`);
@@ -245,7 +251,7 @@ const startWorker = async (workerId) => {
 
   /**
    * @param {string} channel
-   * @param {function(Object<string, any>): void} callback
+   * @param {SubscriptionListener} callback
    */
   const unsubscribe = (channel, callback) => {
     log.silly(`Removing listener for ${channel}`);
@@ -623,51 +629,66 @@ const startWorker = async (workerId) => {
    * @param {string[]} ids
    * @param {any} req
    * @param {function(string, string): void} output
-   * @param {function(string[], function(string): void): void} attachCloseHandler
+   * @param {undefined | function(string[], SubscriptionListener): void} attachCloseHandler
    * @param {boolean=} needsFiltering
-   * @returns {function(object): void}
+   * @returns {SubscriptionListener}
    */
   const streamFrom = (ids, req, output, attachCloseHandler, needsFiltering = false) => {
     const accountId = req.accountId || req.remoteAddress;
 
     log.verbose(req.requestId, `Starting stream from ${ids.join(', ')} for ${accountId}`);
 
-    // Currently message is of type string, soon it'll be Record<string, any>
+    const transmit = (event, payload) => {
-    const listener = message => {
+      // TODO: Replace "string"-based delete payloads with object payloads:
-      const { event, payload, queued_at } = message;
-
-      const transmit = () => {
-        const now = new Date().getTime();
-        const delta = now - queued_at;
       const encodedPayload = typeof payload === 'object' ? JSON.stringify(payload) : payload;
 
-        log.silly(req.requestId, `Transmitting for ${accountId}: ${event} ${encodedPayload} Delay: ${delta}ms`);
+      log.silly(req.requestId, `Transmitting for ${accountId}: ${event} ${encodedPayload}`);
       output(event, encodedPayload);
     };
 
-      // Only messages that may require filtering are statuses, since notifications
+    // The listener used to process each message off the redis subscription,
-      // are already personalized and deletes do not matter
+    // message here is an object with an `event` and `payload` property. Some
-      if (!needsFiltering || event !== 'update') {
+    // events also include a queued_at value, but this is being removed shortly.
-        transmit();
+    /** @type {SubscriptionListener} */
+    const listener = message => {
+      const { event, payload } = message;
+
+      // Streaming only needs to apply filtering to some channels and only to
+      // some events. This is because majority of the filtering happens on the
+      // Ruby on Rails side when producing the event for streaming.
+      //
+      // The only events that require filtering from the streaming server are
+      // `update` and `status.update`, all other events are transmitted to the
+      // client as soon as they're received (pass-through).
+      //
+      // The channels that need filtering are determined in the function
+      // `channelNameToIds` defined below:
+      if (!needsFiltering || (event !== 'update' && event !== 'status.update')) {
+        transmit(event, payload);
         return;
       }
 
-      const unpackedPayload = payload;
+      // The rest of the logic from here on in this function is to handle
-      const targetAccountIds = [unpackedPayload.account.id].concat(unpackedPayload.mentions.map(item => item.id));
+      // filtering of statuses:
-      const accountDomain = unpackedPayload.account.acct.split('@')[1];
 
-      if (Array.isArray(req.chosenLanguages) && unpackedPayload.language !== null && req.chosenLanguages.indexOf(unpackedPayload.language) === -1) {
+      // Filter based on language:
-        log.silly(req.requestId, `Message ${unpackedPayload.id} filtered by language (${unpackedPayload.language})`);
+      if (Array.isArray(req.chosenLanguages) && payload.language !== null && req.chosenLanguages.indexOf(payload.language) === -1) {
+        log.silly(req.requestId, `Message ${payload.id} filtered by language (${payload.language})`);
         return;
       }
 
       // When the account is not logged in, it is not necessary to confirm the block or mute
       if (!req.accountId) {
-        transmit();
+        transmit(event, payload);
         return;
       }
 
-      pgPool.connect((err, client, done) => {
+      // Filter based on domain blocks, blocks, mutes, or custom filters:
+      const targetAccountIds = [payload.account.id].concat(payload.mentions.map(item => item.id));
+      const accountDomain = payload.account.acct.split('@')[1];
+
+      // TODO: Move this logic out of the message handling loop
+      pgPool.connect((err, client, releasePgConnection) => {
         if (err) {
           log.error(err);
           return;
@@ -682,40 +703,57 @@ const startWorker = async (workerId) => {
                         SELECT 1
                         FROM mutes
                         WHERE account_id = $1
-                          AND target_account_id IN (${placeholders(targetAccountIds, 2)})`, [req.accountId, unpackedPayload.account.id].concat(targetAccountIds)),
+                          AND target_account_id IN (${placeholders(targetAccountIds, 2)})`, [req.accountId, payload.account.id].concat(targetAccountIds)),
         ];
 
         if (accountDomain) {
           queries.push(client.query('SELECT 1 FROM account_domain_blocks WHERE account_id = $1 AND domain = $2', [req.accountId, accountDomain]));
         }
 
-        if (!unpackedPayload.filtered && !req.cachedFilters) {
+        if (!payload.filtered && !req.cachedFilters) {
           queries.push(client.query('SELECT filter.id AS id, filter.phrase AS title, filter.context AS context, filter.expires_at AS expires_at, filter.action AS filter_action, keyword.keyword AS keyword, keyword.whole_word AS whole_word FROM custom_filter_keywords keyword JOIN custom_filters filter ON keyword.custom_filter_id = filter.id WHERE filter.account_id = $1 AND (filter.expires_at IS NULL OR filter.expires_at > NOW())', [req.accountId]));
         }
 
         Promise.all(queries).then(values => {
-          done();
+          releasePgConnection();
 
+          // Handling blocks & mutes and domain blocks: If one of those applies,
+          // then we don't transmit the payload of the event to the client
           if (values[0].rows.length > 0 || (accountDomain && values[1].rows.length > 0)) {
             return;
           }
 
-          if (!unpackedPayload.filtered && !req.cachedFilters) {
+          // If the payload already contains the `filtered` property, it means
+          // that filtering has been applied on the ruby on rails side, as
+          // such, we don't need to construct or apply the filters in streaming:
+          if (Object.prototype.hasOwnProperty.call(payload, "filtered")) {
+            transmit(event, payload);
+            return;
+          }
+
+          // Handling for constructing the custom filters and caching them on the request
+          // TODO: Move this logic out of the message handling lifecycle
+          if (!req.cachedFilters) {
             const filterRows = values[accountDomain ? 2 : 1].rows;
 
-            req.cachedFilters = filterRows.reduce((cache, row) => {
+            req.cachedFilters = filterRows.reduce((cache, filter) => {
-              if (cache[row.id]) {
+              if (cache[filter.id]) {
-                cache[row.id].keywords.push([row.keyword, row.whole_word]);
+                cache[filter.id].keywords.push([filter.keyword, filter.whole_word]);
               } else {
-                cache[row.id] = {
+                cache[filter.id] = {
-                  keywords: [[row.keyword, row.whole_word]],
+                  keywords: [[filter.keyword, filter.whole_word]],
-                  expires_at: row.expires_at,
+                  expires_at: filter.expires_at,
-                  repr: {
+                  filter: {
-                    id: row.id,
+                    id: filter.id,
-                    title: row.title,
+                    title: filter.title,
-                    context: row.context,
+                    context: filter.context,
-                    expires_at: row.expires_at,
+                    expires_at: filter.expires_at,
-                    filter_action: ['warn', 'hide'][row.filter_action],
+                    // filter.filter_action is the value from the
+                    // custom_filters.action database column, it is an integer
+                    // representing a value in an enum defined by Ruby on Rails:
+                    //
+                    // enum { warn: 0, hide: 1 }
+                    filter_action: ['warn', 'hide'][filter.filter_action],
                   },
                 };
               }
@@ -723,6 +761,10 @@ const startWorker = async (workerId) => {
               return cache;
             }, {});
 
+            // Construct the regular expressions for the custom filters: This
+            // needs to be done in a separate loop as the database returns one
+            // filterRow per keyword, so we need all the keywords before
+            // constructing the regular expression
             Object.keys(req.cachedFilters).forEach((key) => {
               req.cachedFilters[key].regexp = new RegExp(req.cachedFilters[key].keywords.map(([keyword, whole_word]) => {
                 let expr = keyword.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
@@ -742,31 +784,58 @@ const startWorker = async (workerId) => {
             });
           }
 
-          // Check filters
+          // Apply cachedFilters against the payload, constructing a
-          if (req.cachedFilters && !unpackedPayload.filtered) {
+          // `filter_results` array of FilterResult entities
-            const status = unpackedPayload;
+          if (req.cachedFilters) {
-            const searchContent = ([status.spoiler_text || '', status.content].concat((status.poll && status.poll.options) ? status.poll.options.map(option => option.title) : [])).concat(status.media_attachments.map(att => att.description)).join('\n\n').replace(/<br\s*\/?>/g, '\n').replace(/<\/p><p>/g, '\n\n');
+            const status = payload;
-            const searchIndex = JSDOM.fragment(searchContent).textContent;
+            // TODO: Calculate searchableContent in Ruby on Rails:
+            const searchableContent = ([status.spoiler_text || '', status.content].concat((status.poll && status.poll.options) ? status.poll.options.map(option => option.title) : [])).concat(status.media_attachments.map(att => att.description)).join('\n\n').replace(/<br\s*\/?>/g, '\n').replace(/<\/p><p>/g, '\n\n');
+            const searchableTextContent = JSDOM.fragment(searchableContent).textContent;
 
             const now = new Date();
-            payload.filtered = [];
+            const filter_results = Object.values(req.cachedFilters).reduce((results, cachedFilter) => {
-            Object.values(req.cachedFilters).forEach((cachedFilter) => {
+              // Check the filter hasn't expired before applying:
-              if ((cachedFilter.expires_at === null || cachedFilter.expires_at > now)) {
+              if (cachedFilter.expires_at !== null && cachedFilter.expires_at < now) {
-                const keyword_matches = searchIndex.match(cachedFilter.regexp);
+                return results;
+              }
+
+              // Just in-case JSDOM fails to find textContent in searchableContent
+              if (!searchableTextContent) {
+                return results;
+              }
+
+              const keyword_matches = searchableTextContent.match(cachedFilter.regexp);
               if (keyword_matches) {
-                  payload.filtered.push({
+                // results is an Array of FilterResult; status_matches is always
-                    filter: cachedFilter.repr,
+                // null as we only are only applying the keyword-based custom
+                // filters, not the status-based custom filters.
+                // https://docs.joinmastodon.org/entities/FilterResult/
+                results.push({
+                  filter: cachedFilter.filter,
                   keyword_matches,
-                  });
+                  status_matches: null
-                }
-              }
                 });
               }
 
-          transmit();
+              return results;
+            }, []);
+
+            // Send the payload + the FilterResults as the `filtered` property
+            // to the streaming connection. To reach this code, the `event` must
+            // have been either `update` or `status.update`, meaning the
+            // `payload` is a Status entity, which has a `filtered` property:
+            //
+            // filtered: https://docs.joinmastodon.org/entities/Status/#filtered
+            transmit(event, {
+              ...payload,
+              filtered: filter_results
+            });
+          } else {
+            transmit(event, payload);
+          }
         }).catch(err => {
+          releasePgConnection();
           log.error(err);
-          done();
         });
       });
     };
@@ -775,7 +844,7 @@ const startWorker = async (workerId) => {
       subscribe(`${redisPrefix}${id}`, listener);
     });
 
-    if (attachCloseHandler) {
+    if (typeof attachCloseHandler === 'function') {
       attachCloseHandler(ids.map(id => `${redisPrefix}${id}`), listener);
     }
 
@@ -812,12 +881,13 @@ const startWorker = async (workerId) => {
   /**
    * @param {any} req
    * @param {function(): void} [closeHandler]
-   * @return {function(string[]): void}
+   * @returns {function(string[], SubscriptionListener): void}
    */
-  const streamHttpEnd = (req, closeHandler = undefined) => (ids) => {
+
+  const streamHttpEnd = (req, closeHandler = undefined) => (ids, listener) => {
     req.on('close', () => {
       ids.forEach(id => {
-        unsubscribe(id);
+        unsubscribe(id, listener);
       });
 
       if (closeHandler) {
@@ -1077,7 +1147,7 @@ const startWorker = async (workerId) => {
    * @typedef WebSocketSession
    * @property {any} socket
    * @property {any} request
-   * @property {Object.<string, { listener: function(string): void, stopHeartbeat: function(): void }>} subscriptions
+   * @property {Object.<string, { listener: SubscriptionListener, stopHeartbeat: function(): void }>} subscriptions
    */
 
   /**