Remove Neo4J

23 files changed, 6 insertions, 323 deletions

diff --git a/Dockerfile.app b/Dockerfile
index dfc0ad5b7..dfc0ad5b7 100644
--- a/Dockerfile.app
+++ b/Dockerfile
diff --git a/Dockerfile.neo4j b/Dockerfile.neo4j
deleted file mode 100644
index 373c2abb0..000000000
--- a/Dockerfile.neo4j
+++ /dev/null
@@ -1,17 +0,0 @@
-FROM neo4j:latest
-
-ENV NEO4J_AUTH=none
-
-RUN cd /var/lib/neo4j/plugins \
-  && wget http://products.graphaware.com/download/framework-server-community/graphaware-server-community-all-3.0.6.43.jar \
-  && wget http://products.graphaware.com/download/noderank/graphaware-noderank-3.0.6.43.3.jar
-RUN echo "dbms.unmanaged_extension_classes=com.graphaware.server=/graphaware" >> /var/lib/neo4j/conf/neo4j.conf
-RUN echo 'com.graphaware.runtime.enabled=true\n\
-com.graphaware.module.NR.1=com.graphaware.module.noderank.NodeRankModuleBootstrapper\n\
-com.graphaware.module.NR.maxTopRankNodes=10\n\
-com.graphaware.module.NR.dampingFactor=0.85\n\
-com.graphaware.module.NR.propertyKey=nodeRank\n'\
-  >> /var/lib/neo4j/conf/neo4j.conf
-RUN echo 'com.graphaware.runtime.stats.disabled=true\n\
-com.graphaware.server.stats.disabled=true\n'\
-  >> /var/lib/neo4j/conf/neo4j.conf
diff --git a/Gemfile b/Gemfile
index 4abed33ff..40f7a4002 100644
--- a/Gemfile
+++ b/Gemfile
@@ -43,7 +43,6 @@ gem 'rack-attack'
 gem 'rack-cors', require: 'rack/cors'
 gem 'sidekiq'
 gem 'ledermann-rails-settings'
-gem 'neography'
 gem 'pg_search'
 
 gem 'react-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index b058ae940..4a72b6b93 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -132,7 +132,6 @@ GEM
       thread
       thread_safe
     erubis (2.7.0)
-    excon (0.53.0)
     execjs (2.7.0)
     fabrication (2.15.2)
     fast_blank (1.0.0)
@@ -213,19 +212,11 @@ GEM
     mini_portile2 (2.1.0)
     minitest (5.9.1)
     multi_json (1.12.1)
-    neography (1.8.0)
-      excon (>= 0.33.0)
-      json (>= 1.7.7)
-      multi_json (>= 1.3.2)
-      os (>= 0.9.6)
-      rake (>= 0.8.7)
-      rubyzip (>= 1.0.0)
     nio4r (1.2.1)
     nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
     oj (2.17.3)
     orm_adapter (0.5.0)
-    os (0.9.6)
     ostatus2 (1.0.2)
       addressable (~> 2.4)
       http (~> 2.0)
@@ -339,7 +330,6 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.8.1)
-    rubyzip (1.2.0)
     safe_yaml (1.0.4)
     sass (3.4.22)
     sass-rails (5.0.6)
@@ -435,7 +425,6 @@ DEPENDENCIES
   letter_opener
   link_header
   lograge
-  neography
   nokogiri
   oj
   ostatus2
diff --git a/app/assets/javascripts/components/actions/suggestions.jsx b/app/assets/javascripts/components/actions/suggestions.jsx
deleted file mode 100644
index 6b3aa69dd..000000000
--- a/app/assets/javascripts/components/actions/suggestions.jsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import api from '../api';
-
-export const SUGGESTIONS_FETCH_REQUEST = 'SUGGESTIONS_FETCH_REQUEST';
-export const SUGGESTIONS_FETCH_SUCCESS = 'SUGGESTIONS_FETCH_SUCCESS';
-export const SUGGESTIONS_FETCH_FAIL    = 'SUGGESTIONS_FETCH_FAIL';
-
-export function fetchSuggestions() {
-  return (dispatch, getState) => {
-    dispatch(fetchSuggestionsRequest());
-
-    api(getState).get('/api/v1/accounts/suggestions').then(response => {
-      dispatch(fetchSuggestionsSuccess(response.data));
-    }).catch(error => {
-      dispatch(fetchSuggestionsFail(error));
-    });
-  };
-};
-
-export function fetchSuggestionsRequest() {
-  return {
-    type: SUGGESTIONS_FETCH_REQUEST
-  };
-};
-
-export function fetchSuggestionsSuccess(accounts) {
-  return {
-    type: SUGGESTIONS_FETCH_SUCCESS,
-    accounts: accounts
-  };
-};
-
-export function fetchSuggestionsFail(error) {
-  return {
-    type: SUGGESTIONS_FETCH_FAIL,
-    error: error
-  };
-};
diff --git a/app/assets/javascripts/components/features/compose/components/suggestions_box.jsx b/app/assets/javascripts/components/features/compose/components/suggestions_box.jsx
deleted file mode 100644
index 6850629ba..000000000
--- a/app/assets/javascripts/components/features/compose/components/suggestions_box.jsx
+++ /dev/null
@@ -1,86 +0,0 @@
-import PureRenderMixin from 'react-addons-pure-render-mixin';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import AccountContainer from '../../../containers/account_container';
-import { FormattedMessage } from 'react-intl';
-
-const outerStyle = {
-  position: 'relative'
-};
-
-const headerStyle = {
-  fontSize: '14px',
-  fontWeight: '500',
-  display: 'block',
-  padding: '10px',
-  color: '#9baec8',
-  background: '#454b5e',
-  overflow: 'hidden'
-};
-
-const nextStyle = {
-  display: 'inline-block',
-  float: 'right',
-  fontWeight: '400',
-  color: '#2b90d9'
-};
-
-const SuggestionsBox = React.createClass({
-
-  propTypes: {
-    accountIds: ImmutablePropTypes.list,
-    perWindow: React.PropTypes.number
-  },
-
-  getInitialState () {
-    return {
-      index: 0
-    };
-  },
-
-  getDefaultProps () {
-    return {
-      perWindow: 2
-    };
-  },
-
-  mixins: [PureRenderMixin],
-
-  handleNextClick (e) {
-    e.preventDefault();
-
-    let newIndex = this.state.index + 1;
-
-    if (this.props.accountIds.skip(this.props.perWindow * newIndex).size === 0) {
-      newIndex = 0;
-    }
-
-    this.setState({ index: newIndex });
-  },
-
-  render () {
-    const { accountIds, perWindow } = this.props;
-
-    if (!accountIds || accountIds.size === 0) {
-      return <div />;
-    }
-
-    let nextLink = '';
-
-    if (accountIds.size > perWindow) {
-      nextLink = <a href='#' style={nextStyle} onClick={this.handleNextClick}><FormattedMessage id='suggestions_box.refresh' defaultMessage='Refresh' /></a>;
-    }
-
-    return (
-      <div style={outerStyle}>
-        <strong style={headerStyle}>
-          <FormattedMessage id='suggestions_box.who_to_follow' defaultMessage='Who to follow' /> {nextLink}
-        </strong>
-
-        {accountIds.skip(perWindow * this.state.index).take(perWindow).map(accountId => <AccountContainer key={accountId} id={accountId} withNote={false} />)}
-      </div>
-    );
-  }
-
-});
-
-export default SuggestionsBox;
diff --git a/app/assets/javascripts/components/features/compose/containers/suggestions_container.jsx b/app/assets/javascripts/components/features/compose/containers/suggestions_container.jsx
deleted file mode 100644
index 944ceed85..000000000
--- a/app/assets/javascripts/components/features/compose/containers/suggestions_container.jsx
+++ /dev/null
@@ -1,8 +0,0 @@
-import { connect }           from 'react-redux';
-import SuggestionsBox        from '../components/suggestions_box';
-
-const mapStateToProps = (state) => ({
-  accountIds: state.getIn(['user_lists', 'suggestions'])
-});
-
-export default connect(mapStateToProps)(SuggestionsBox);
diff --git a/app/assets/javascripts/components/features/compose/index.jsx b/app/assets/javascripts/components/features/compose/index.jsx
index 5c1b22e00..4017c8949 100644
--- a/app/assets/javascripts/components/features/compose/index.jsx
+++ b/app/assets/javascripts/components/features/compose/index.jsx
@@ -3,9 +3,7 @@ import ComposeFormContainer from './containers/compose_form_container';
 import UploadFormContainer from './containers/upload_form_container';
 import NavigationContainer from './containers/navigation_container';
 import PureRenderMixin from 'react-addons-pure-render-mixin';
-import SuggestionsContainer from './containers/suggestions_container';
 import SearchContainer from './containers/search_container';
-import { fetchSuggestions } from '../../actions/suggestions';
 import { connect } from 'react-redux';
 import { mountCompose, unmountCompose } from '../../actions/compose';
 
@@ -19,7 +17,6 @@ const Compose = React.createClass({
 
   componentDidMount () {
     this.props.dispatch(mountCompose());
-    this.props.dispatch(fetchSuggestions());
   },
 
   componentWillUnmount () {
@@ -29,14 +26,10 @@ const Compose = React.createClass({
   render () {
     return (
       <Drawer>
-        <div style={{ flex: '1 1 auto' }}>
-          <SearchContainer />
-          <NavigationContainer />
-          <ComposeFormContainer />
-          <UploadFormContainer />
-        </div>
-
-        <SuggestionsContainer />
+        <SearchContainer />
+        <NavigationContainer />
+        <ComposeFormContainer />
+        <UploadFormContainer />
       </Drawer>
     );
   }
diff --git a/app/assets/javascripts/components/locales/de.jsx b/app/assets/javascripts/components/locales/de.jsx
index 85412635e..4e2a70edb 100644
--- a/app/assets/javascripts/components/locales/de.jsx
+++ b/app/assets/javascripts/components/locales/de.jsx
@@ -41,8 +41,6 @@ const en = {
   "search.placeholder": "Suche",
   "search.account": "Konto",
   "search.hashtag": "Hashtag",
-  "suggestions_box.who_to_follow": "Wem folgen",
-  "suggestions_box.refresh": "Aktualisieren",
   "upload_button.label": "Media-Datei anfügen",
   "upload_form.undo": "Entfernen",
   "notification.follow": "{name} folgt dir",
diff --git a/app/assets/javascripts/components/locales/en.jsx b/app/assets/javascripts/components/locales/en.jsx
index 0ea324f66..e6ae25453 100644
--- a/app/assets/javascripts/components/locales/en.jsx
+++ b/app/assets/javascripts/components/locales/en.jsx
@@ -45,8 +45,6 @@ const en = {
   "search.placeholder": "Search",
   "search.account": "Account",
   "search.hashtag": "Hashtag",
-  "suggestions_box.who_to_follow": "Who to follow",
-  "suggestions_box.refresh": "Refresh",
   "upload_button.label": "Add media",
   "upload_form.undo": "Undo",
   "notification.follow": "{name} followed you",
diff --git a/app/assets/javascripts/components/locales/es.jsx b/app/assets/javascripts/components/locales/es.jsx
index 47377e5ae..d4434bba7 100644
--- a/app/assets/javascripts/components/locales/es.jsx
+++ b/app/assets/javascripts/components/locales/es.jsx
@@ -42,8 +42,6 @@ const es = {
   "search.placeholder": "Buscar",
   "search.account": "Cuenta",
   "search.hashtag": "Etiqueta",
-  "suggestions_box.who_to_follow": "A quién seguir",
-  "suggestions_box.refresh": "Refrescar",
   "upload_button.label": "Añadir medio",
   "upload_form.undo": "Deshacer",
   "notification.follow": "{name} le esta ahora siguiendo",
diff --git a/app/assets/javascripts/components/locales/fr.jsx b/app/assets/javascripts/components/locales/fr.jsx
index 0cf4c5d52..4673305f7 100644
--- a/app/assets/javascripts/components/locales/fr.jsx
+++ b/app/assets/javascripts/components/locales/fr.jsx
@@ -41,8 +41,6 @@ const fr = {
   "search.placeholder": "Chercher",
   "search.account": "Compte",
   "search.hashtag": "Mot-clé",
-  "suggestions_box.who_to_follow": "Suggestions",
-  "suggestions_box.refresh": "Rafraîchir",
   "upload_button.label": "Joindre un média",
   "upload_form.undo": "Annuler",
   "notification.follow": "{name} s’est abonné⋅e à vos statuts",
diff --git a/app/assets/javascripts/components/locales/pt.jsx b/app/assets/javascripts/components/locales/pt.jsx
index 02b21f3cb..e67bd80ac 100644
--- a/app/assets/javascripts/components/locales/pt.jsx
+++ b/app/assets/javascripts/components/locales/pt.jsx
@@ -40,8 +40,6 @@ const pt = {
   "search.placeholder": "Busca",
   "search.account": "Conta",
   "search.hashtag": "Hashtag",
-  "suggestions_box.who_to_follow": "Quem seguir",
-  "suggestions_box.refresh": "Recarregar",
   "upload_button.label": "Adicionar media",
   "upload_form.undo": "Desfazer"
 };
diff --git a/app/assets/javascripts/components/reducers/user_lists.jsx b/app/assets/javascripts/components/reducers/user_lists.jsx
index 65598f8a0..3608e4209 100644
--- a/app/assets/javascripts/components/reducers/user_lists.jsx
+++ b/app/assets/javascripts/components/reducers/user_lists.jsx
@@ -4,7 +4,6 @@ import {
   FOLLOWING_FETCH_SUCCESS,
   FOLLOWING_EXPAND_SUCCESS
 } from '../actions/accounts';
-import { SUGGESTIONS_FETCH_SUCCESS } from '../actions/suggestions';
 import {
   REBLOGS_FETCH_SUCCESS,
   FAVOURITES_FETCH_SUCCESS
@@ -14,7 +13,6 @@ import Immutable from 'immutable';
 const initialState = Immutable.Map({
   followers: Immutable.Map(),
   following: Immutable.Map(),
-  suggestions: Immutable.List(),
   reblogged_by: Immutable.Map(),
   favourited_by: Immutable.Map()
 });
@@ -42,8 +40,6 @@ export default function userLists(state = initialState, action) {
       return normalizeList(state, 'following', action.id, action.accounts, action.next);
     case FOLLOWING_EXPAND_SUCCESS:
       return appendToList(state, 'following', action.id, action.accounts, action.next);
-    case SUGGESTIONS_FETCH_SUCCESS:
-      return state.set('suggestions', Immutable.List(action.accounts.map(item => item.id)));
     case REBLOGS_FETCH_SUCCESS:
       return state.setIn(['reblogged_by', action.id], Immutable.List(action.accounts.map(item => item.id)));
     case FAVOURITES_FETCH_SUCCESS:
diff --git a/app/controllers/api/v1/accounts_controller.rb b/app/controllers/api/v1/accounts_controller.rb
index 4ae900583..5546ee588 100644
--- a/app/controllers/api/v1/accounts_controller.rb
+++ b/app/controllers/api/v1/accounts_controller.rb
@@ -46,16 +46,6 @@ class Api::V1::AccountsController < ApiController
     render action: :index
   end
 
-  def common_followers
-    @accounts = @account.common_followers_with(current_user.account)
-    render action: :index
-  end
-
-  def suggestions
-    @accounts = FollowSuggestion.get(current_user.account_id)
-    render action: :index
-  end
-
   def statuses
     @statuses = @account.statuses.paginate_by_max_id(DEFAULT_STATUSES_LIMIT, params[:max_id], params[:since_id]).to_a
     @statuses = cache(@statuses)
diff --git a/app/models/account.rb b/app/models/account.rb
index 16d654195..a60a23e14 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -130,15 +130,6 @@ class Account < ApplicationRecord
     username
   end
 
-  def common_followers_with(other_account)
-    results  = Neography::Rest.new.execute_query('MATCH (a {account_id: {a_id}})-[:follows]->(b)-[:follows]->(c {account_id: {c_id}}) RETURN b.account_id', a_id: id, c_id: other_account.id)
-    ids      = results['data'].map(&:first)
-    accounts = Account.where(id: ids).with_counters.limit(20).map { |a| [a.id, a] }.to_h
-    ids.map { |id| accounts[id] }.compact
-  rescue Neography::NeographyError, Excon::Error::Socket
-    []
-  end
-
   class << self
     def find_local!(username)
       find_remote!(username, nil)
diff --git a/app/models/follow.rb b/app/models/follow.rb
index cc5bceb75..f83490caa 100644
--- a/app/models/follow.rb
+++ b/app/models/follow.rb
@@ -27,32 +27,4 @@ class Follow < ApplicationRecord
   def title
     destroyed? ? "#{account.acct} is no longer following #{target_account.acct}" : "#{account.acct} started following #{target_account.acct}"
   end
-
-  after_create  :add_to_graph
-  after_destroy :remove_from_graph
-
-  def sync!
-    add_to_graph
-  end
-
-  private
-
-  def add_to_graph
-    neo = Neography::Rest.new
-
-    a = neo.create_unique_node('account_index', 'Account', account_id.to_s, account_id: account_id)
-    b = neo.create_unique_node('account_index', 'Account', target_account_id.to_s, account_id: target_account_id)
-
-    neo.create_unique_relationship('follow_index', 'Follow', id.to_s, 'follows', a, b)
-  rescue Neography::NeographyError, Excon::Error::Socket => e
-    Rails.logger.error e
-  end
-
-  def remove_from_graph
-    neo = Neography::Rest.new
-    rel = neo.get_relationship_index('follow_index', 'Follow', id.to_s)
-    neo.delete_relationship(rel)
-  rescue Neography::NeographyError, Excon::Error::Socket => e
-    Rails.logger.error e
-  end
 end
diff --git a/app/models/follow_suggestion.rb b/app/models/follow_suggestion.rb
deleted file mode 100644
index 2daa40dcb..000000000
--- a/app/models/follow_suggestion.rb
+++ /dev/null
@@ -1,50 +0,0 @@
-# frozen_string_literal: true
-
-class FollowSuggestion
-  class << self
-    def get(for_account_id, limit = 10)
-      neo = Neography::Rest.new
-
-      query = <<END
-MATCH (a {account_id: {id}})-[:follows]->(b)-[:follows]->(c)
-WHERE a <> c
-AND NOT (a)-[:follows]->(c)
-RETURN DISTINCT c.account_id, count(b), c.nodeRank
-ORDER BY count(b) DESC, c.nodeRank DESC
-LIMIT {limit}
-END
-
-      results = neo.execute_query(query, id: for_account_id, limit: limit)
-
-      if results.empty? || results['data'].empty?
-        results = fallback(for_account_id, limit)
-      elsif results['data'].size < limit
-        results['data'] = (results['data'] + fallback(for_account_id, limit - results['data'].size)['data']).uniq
-      end
-
-      account_ids  = results['data'].map(&:first)
-      blocked_ids  = Block.where(account_id: for_account_id).pluck(:target_account_id)
-      accounts_map = Account.where(id: account_ids - blocked_ids).with_counters.map { |a| [a.id, a] }.to_h
-
-      account_ids.map { |id| accounts_map[id] }.compact
-    rescue Neography::NeographyError, Excon::Error::Socket => e
-      Rails.logger.error e
-      return []
-    end
-
-    private
-
-    def fallback(for_account_id, limit)
-      neo = Neography::Rest.new
-
-      query = <<END
-MATCH (b)
-RETURN b.account_id
-ORDER BY b.nodeRank DESC
-LIMIT {limit}
-END
-
-      neo.execute_query(query, id: for_account_id, limit: limit)
-    end
-  end
-end
diff --git a/config/initializers/neography.rb b/config/initializers/neography.rb
deleted file mode 100644
index bd6ead3b0..000000000
--- a/config/initializers/neography.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-Neography.configure do |config|
-  config.protocol             = "http"
-  config.server               = ENV.fetch('NEO4J_HOST') { 'localhost' }
-  config.port                 = ENV.fetch('NEO4J_PORT') { 7474 }
-end
diff --git a/config/routes.rb b/config/routes.rb
index 00185c5e8..e0c14b47a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -80,7 +80,6 @@ Rails.application.routes.draw do
         collection do
           get :relationships
           get :verify_credentials
-          get :suggestions
           get :search
         end
 
@@ -88,7 +87,6 @@ Rails.application.routes.draw do
           get :statuses
           get :followers
           get :following
-          get :common_followers
 
           post :follow
           post :unfollow
diff --git a/docker-compose.yml b/docker-compose.yml
index 9f9126805..3392dd242 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,16 +6,9 @@ services:
   redis:
     restart: always
     image: redis
-  neo4j:
-    restart: always
-    build:
-      context: .
-      dockerfile: Dockerfile.neo4j
   web:
     restart: always
-    build:
-      context: .
-      dockerfile: Dockerfile.app
+    build: .
     env_file: .env.production
     command: bundle exec rails s -p 3000 -b '0.0.0.0'
     ports:
@@ -23,20 +16,16 @@ services:
     depends_on:
       - db
       - redis
-      - neo4j
     volumes:
       - ./public/assets:/mastodon/public/assets
       - ./public/system:/mastodon/public/system
   sidekiq:
     restart: always
-    build:
-      context: .
-      dockerfile: Dockerfile.app
+    build: .
     env_file: .env.production
     command: bundle exec sidekiq -q default -q mailers
     depends_on:
       - db
       - redis
-      - neo4j
     volumes:
       - ./public/system:/mastodon/public/system
diff --git a/lib/tasks/mastodon.rake b/lib/tasks/mastodon.rake
index 93461bd0a..8730a64cd 100644
--- a/lib/tasks/mastodon.rake
+++ b/lib/tasks/mastodon.rake
@@ -49,11 +49,4 @@ namespace :mastodon do
       Redis.current.keys('feed:*').each { |key| Redis.current.del(key) }
     end
   end
-
-  namespace :graphs do
-    desc 'Syncs all follow relationships to Neo4J'
-    task sync: :environment do
-      Follow.find_each(&:sync!)
-    end
-  end
 end
diff --git a/spec/controllers/api/v1/accounts_controller_spec.rb b/spec/controllers/api/v1/accounts_controller_spec.rb
index 98eea28ce..e4532305b 100644
--- a/spec/controllers/api/v1/accounts_controller_spec.rb
+++ b/spec/controllers/api/v1/accounts_controller_spec.rb
@@ -46,20 +46,6 @@ RSpec.describe Api::V1::AccountsController, type: :controller do
     end
   end
 
-  describe 'GET #suggestions' do
-    it 'returns http success' do
-      get :suggestions
-      expect(response).to have_http_status(:success)
-    end
-  end
-
-  describe 'GET #common_followers' do
-    it 'returns http success' do
-      get :common_followers, params: { id: user.account.id }
-      expect(response).to have_http_status(:success)
-    end
-  end
-
   describe 'POST #follow' do
     let(:other_account) { Fabricate(:user, email: 'bob@example.com', account: Fabricate(:account, username: 'bob')).account }