cleanup api-db-stores a bit

packages/unleash-api/lib/db/event-store.js

@@ -1,36 +1,45 @@
 'use strict';
 
+const { EventEmitter } = require('events');
+
 const EVENT_COLUMNS = ['id', 'type', 'created_by', 'created_at', 'data'];
 
-module.exports = function (db) {
+class EventStore extends EventEmitter {
-    function storeEvent (event) {
+
-        return db('events').insert({
+    constructor (db) {
+        super();
+        this.db = db;
+    }
+
+    store (event) {
+        return this.db('events').insert({
             type: event.type,
             created_by: event.createdBy, // eslint-disable-line
             data: event.data,
-        });
+        })
+        .then(() => this.emit(event.type, event));
     }
 
-    function getEvents () {
+    getEvents () {
-        return db
+        return this.db
             .select(EVENT_COLUMNS)
             .from('events')
             .limit(100)
             .orderBy('created_at', 'desc')
-            .map(rowToEvent);
+            .map(this.rowToEvent);
     }
 
-    function getEventsFilterByName (name) {
+    getEventsFilterByName (name) {
-        return db
+        return this.db
         .select(EVENT_COLUMNS)
         .from('events')
         .limit(100)
         .whereRaw('data ->> \'name\' = ?', [name])
         .orderBy('created_at', 'desc')
-        .map(rowToEvent);
+        .map(this.rowToEvent);
     }
 
-    function rowToEvent (row) {
+    rowToEvent (row) {
         return {
             id: row.id,
             type: row.type,
@@ -39,11 +48,7 @@ module.exports = function (db) {
             data: row.data,
         };
     }
-
-    return {
-        store: storeEvent,
-        getEvents,
-        getEventsFilterByName,
-    };
 };
 
+module.exports = EventStore;
+

packages/unleash-api/lib/db/feature-toggle-store.js

@@ -5,42 +5,43 @@ const logger = require('../logger');
 const NotFoundError = require('../error/notfound-error');
 const FEATURE_COLUMNS = ['name', 'description', 'enabled', 'strategies'];
 
-module.exports = function (db, eventStore) {
+class FeatureToggleStore {
-    eventStore.on(eventType.featureCreated, event => createFeature(event.data));
+    constructor (db, eventStore) {
+        this.db = db;
+        eventStore.on(eventType.featureCreated, event => this._createFeature(event.data));
+        eventStore.on(eventType.featureUpdated, event => this._updateFeature(event.data));
+        eventStore.on(eventType.featureArchived, event => this._archiveFeature(event.data));
+        eventStore.on(eventType.featureRevived, event => this._reviveFeature(event.data));
+    }
     
-    eventStore.on(eventType.featureUpdated, event => updateFeature(event.data));
 
-    eventStore.on(eventType.featureArchived, event => archiveFeature(event.data));
+    getFeatures () {
-
+        return this.db
-    eventStore.on(eventType.featureRevived, event => reviveFeature(event.data));
-
-    function getFeatures () {
-        return db
             .select(FEATURE_COLUMNS)
             .from('features')
             .where({ archived: 0 })
             .orderBy('name', 'asc')
-            .map(rowToFeature);
+            .map(this.rowToFeature);
     }
 
-    function getFeature (name) {
+    getFeature (name) {
-        return db
+        return this.db
             .first(FEATURE_COLUMNS)
             .from('features')
             .where({ name })
-            .then(rowToFeature);
+            .then(this.rowToFeature);
     }
 
-    function getArchivedFeatures () {
+    getArchivedFeatures () {
-        return db
+        return this.db
             .select(FEATURE_COLUMNS)
             .from('features')
             .where({ archived: 1 })
             .orderBy('name', 'asc')
-            .map(rowToFeature);
+            .map(this.rowToFeature);
     }
 
-    function rowToFeature (row) {
+    rowToFeature (row) {
         if (!row) {
             throw new NotFoundError('No feature toggle found');
         }
@@ -52,7 +53,7 @@ module.exports = function (db, eventStore) {
         };
     }
 
-    function eventDataToRow (data) {
+    eventDataToRow (data) {
         return {
             name: data.name,
             description: data.description,
@@ -62,25 +63,25 @@ module.exports = function (db, eventStore) {
         };
     }
 
-    function createFeature (data) {
+    _createFeature (data) {
-        return db('features')
+        return this.db('features')
-            .insert(eventDataToRow(data))
+            .insert(this.eventDataToRow(data))
             .catch(err => {
                 logger.error('Could not insert feature, error was: ', err);
             });
     }
 
-    function updateFeature (data) {
+    _updateFeature (data) {
-        return db('features')
+        return this.db('features')
             .where({ name: data.name })
-            .update(eventDataToRow(data))
+            .update(this.eventDataToRow(data))
             .catch(err => {
                 logger.error('Could not update feature, error was: ', err);
             });
     }
 
-    function archiveFeature (data) {
+    _archiveFeature (data) {
-        return db('features')
+        return this.db('features')
             .where({ name: data.name })
             .update({ archived: 1 })
             .catch(err => {
@@ -88,21 +89,14 @@ module.exports = function (db, eventStore) {
             });
     }
 
-    function reviveFeature (data) {
+    _reviveFeature (data) {
-        return db('features')
+        return this.db('features')
             .where({ name: data.name })
             .update({ archived: 0, enabled: 0 })
             .catch(err => {
                 logger.error('Could not archive feature, error was: ', err);
             });
     }
-
-
-    return {
-        getFeatures,
-        getFeature,
-        getArchivedFeatures,
-        _createFeature: createFeature, // visible for testing
-        _updateFeature: updateFeature,  // visible for testing
-    };
 };
+
+module.exports = FeatureToggleStore;

packages/unleash-api/lib/db/index.js

@@ -1,13 +1,21 @@
 'use strict';
 
-const eventDbCreator = require('./event');
+const EventStore = require('./event-store');
+const FeatureToggleStore = require('./feature-toggle-store');
+const StrategyStore = require('./strategy-store');
 const clientInstancesDbCreator = require('./client-instances');
 const clientMetricsDbCreator = require('./client-metrics');
 const clientStrategiesDbCreator = require('./client-strategies');
 
-module.exports = (db) => ({
+module.exports = (db) => {
-    eventDb: eventDbCreator(db),
+    const eventStore = new EventStore(db);
+
+    return {
+        eventStore,
+        featureToggleStore: new FeatureToggleStore(db, eventStore),
+        strategyStore: new StrategyStore(db, eventStore),
         clientInstancesDb: clientInstancesDbCreator(db),
         clientMetricsDb: clientMetricsDbCreator(db),
         clientStrategiesDb: clientStrategiesDbCreator(db),
-});
+    };
+};

packages/unleash-api/lib/db/strategy-store.js

@@ -4,36 +4,39 @@ const eventType = require('../event-type');
 const logger = require('../logger');
 const NotFoundError = require('../error/notfound-error');
 const STRATEGY_COLUMNS = ['name', 'description', 'parameters_template'];
+const TABLE = 'strategies';
 
-module.exports = function (db, eventStore) {
+class StrategyStore {
-    eventStore.on(eventType.strategyCreated, event => createStrategy(event.data));
+    constructor (db, eventStore) {
-
+        this.db = db;
+        eventStore.on(eventType.strategyCreated, event => this._createStrategy(event.data));
         eventStore.on(eventType.strategyDeleted, event => {
-        db('strategies')
+            db(TABLE)
                 .where('name', event.data.name)
                 .del()
                 .catch(err => {
                     logger.error('Could not delete strategy, error was: ', err);
                 });
         });
+    }
 
-    function getStrategies () {
+    getStrategies () {
-        return db
+        return this.db
             .select(STRATEGY_COLUMNS)
-            .from('strategies')
+            .from(TABLE)
             .orderBy('created_at', 'asc')
-            .map(rowToStrategy);
+            .map(this.rowToStrategy);
     }
 
-    function getStrategy (name) {
+    getStrategy (name) {
-        return db
+        return this.db
             .first(STRATEGY_COLUMNS)
-            .from('strategies')
+            .from(TABLE)
             .where({ name })
-            .then(rowToStrategy);
+            .then(this.rowToStrategy);
     }
 
-    function rowToStrategy (row) {
+    rowToStrategy (row) {
         if (!row) {
             throw new NotFoundError('No strategy found');
         }
@@ -45,7 +48,7 @@ module.exports = function (db, eventStore) {
         };
     }
 
-    function eventDataToRow (data) {
+    eventDataToRow (data) {
         return {
             name: data.name,
             description: data.description,
@@ -53,18 +56,14 @@ module.exports = function (db, eventStore) {
         };
     }
 
-    function createStrategy (data) {
+    _createStrategy (data) {
-        db('strategies')
+        this.db(TABLE)
-            .insert(eventDataToRow(data))
+            .insert(this.eventDataToRow(data))
             .catch(err => {
                 logger.error('Could not insert strategy, error was: ', err);
             });
     }
-
-    return {
-        getStrategies,
-        getStrategy,
-        _createStrategy: createStrategy, // visible for testing
-    };
 };
 
+module.exports = StrategyStore;
+

packages/unleash-api/lib/event-store.js

@@ -1,15 +0,0 @@
-'use strict';
-
-const EventEmitter = require('events').EventEmitter;
-
-module.exports = class EventStore extends EventEmitter {
-    constructor (eventDb) {
-        super();
-        this.eventDb = eventDb;
-    }
-
-    create  (event) {
-        return this.eventDb.store(event).then(() => this.emit(event.type, event));
-    }
-};
-

packages/unleash-api/lib/routes/event.js

@@ -4,17 +4,17 @@ const eventDiffer = require('../event-differ');
 const version = 1;
 
 module.exports = function (app, config) {
-    const eventDb = config.eventDb;
+    const eventStore = config.eventStore;
 
     app.get('/events', (req, res) => {
-        eventDb.getEvents().then(events => {
+        eventStore.getEvents().then(events => {
             eventDiffer.addDiffs(events);
             res.json({ version, events });
         });
     });
 
     app.get('/events/:name', (req, res) => {
-        eventDb.getEventsFilterByName(req.params.name).then(events => {
+        eventStore.getEventsFilterByName(req.params.name).then(events => {
             if (events) {
                 eventDiffer.addDiffs(events);
                 res.json(events);

packages/unleash-api/lib/routes/feature-archive.js

@@ -6,11 +6,11 @@ const ValidationError = require('../error/validation-error');
 const validateRequest = require('../error/validate-request');
 
 module.exports = function (app, config) {
-    const featureDb = config.featureDb;
+    const featureToggleStore = config.featureToggleStore;
     const eventStore = config.eventStore;
 
     app.get('/archive/features', (req, res) => {
-        featureDb.getArchivedFeatures().then(archivedFeatures => {
+        featureToggleStore.getArchivedFeatures().then(archivedFeatures => {
             res.json({ features: archivedFeatures });
         });
     });
@@ -19,7 +19,7 @@ module.exports = function (app, config) {
         req.checkBody('name', 'Name is required').notEmpty();
 
         validateRequest(req)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.featureRevived,
                 createdBy: req.connection.remoteAddress,
                 data: req.body,

packages/unleash-api/lib/routes/feature.js

@@ -13,17 +13,17 @@ const legacyFeatureMapper = require('../helper/legacy-feature-mapper');
 const version = 1;
 
 module.exports = function (app, config) {
-    const featureDb = config.featureDb;
+    const featureToggleStore = config.featureToggleStore;
     const eventStore = config.eventStore;
 
     app.get('/features', (req, res) => {
-        featureDb.getFeatures()
+        featureToggleStore.getFeatures()
             .then((features) => features.map(legacyFeatureMapper.addOldFields))
             .then(features => res.json({ version, features }));
     });
 
     app.get('/features/:featureName', (req, res) => {
-        featureDb.getFeature(req.params.featureName)
+        featureToggleStore.getFeature(req.params.featureName)
             .then(legacyFeatureMapper.addOldFields)
             .then(feature => res.json(feature).end())
             .catch(() => res.status(404).json({ error: 'Could not find feature' }));
@@ -36,7 +36,7 @@ module.exports = function (app, config) {
         validateRequest(req)
             .then(validateFormat)
             .then(validateUniqueName)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.featureCreated,
                 createdBy: extractUser(req),
                 data: legacyFeatureMapper.toNewFormat(req.body),
@@ -61,8 +61,8 @@ module.exports = function (app, config) {
 
         updatedFeature.name = featureName;
 
-        featureDb.getFeature(featureName)
+        featureToggleStore.getFeature(featureName)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.featureUpdated,
                 createdBy: userName,
                 data: updatedFeature,
@@ -79,8 +79,8 @@ module.exports = function (app, config) {
         const featureName    = req.params.featureName;
         const userName       = extractUser(req);
 
-        featureDb.getFeature(featureName)
+        featureToggleStore.getFeature(featureName)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.featureArchived,
                 createdBy: userName,
                 data: {
@@ -97,7 +97,7 @@ module.exports = function (app, config) {
 
     function validateUniqueName (req) {
         return new BPromise((resolve, reject) => {
-            featureDb.getFeature(req.body.name)
+            featureToggleStore.getFeature(req.body.name)
                 .then(() => {
                     reject(new NameExistsError('Feature name already exist'));
                 }, () => {

packages/unleash-api/lib/routes/strategy.js

@@ -11,17 +11,17 @@ const extractUser = require('../extract-user');
 const version = 1;
 
 module.exports = function (app, config) {
-    const strategyDb = config.strategyDb;
+    const strategyStore = config.strategyStore;
     const eventStore = config.eventStore;
 
     app.get('/strategies', (req, res) => {
-        strategyDb.getStrategies().then(strategies => {
+        strategyStore.getStrategies().then(strategies => {
             res.json({ version, strategies });
         });
     });
 
     app.get('/strategies/:name', (req, res) => {
-        strategyDb.getStrategy(req.params.name)
+        strategyStore.getStrategy(req.params.name)
             .then(strategy => {
                 res.json(strategy);
             })
@@ -33,8 +33,8 @@ module.exports = function (app, config) {
     app.delete('/strategies/:name', (req, res) => {
         const strategyName = req.params.name;
 
-        strategyDb.getStrategy(strategyName)
+        strategyStore.getStrategy(strategyName)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.strategyDeleted,
                 createdBy: extractUser(req),
                 data: {
@@ -61,7 +61,7 @@ module.exports = function (app, config) {
 
         validateRequest(req)
             .then(validateStrategyName)
-            .then(() => eventStore.create({
+            .then(() => eventStore.store({
                 type: eventType.strategyCreated,
                 createdBy: extractUser(req),
                 data: newStrategy,
@@ -81,7 +81,7 @@ module.exports = function (app, config) {
 
     function validateStrategyName (req) {
         return new BPromise((resolve, reject) => {
-            strategyDb.getStrategy(req.body.name)
+            strategyStore.getStrategy(req.body.name)
                 .then(() => {
                     reject(new NameExistsError('Feature name already exist'));
                 }, () => {

packages/unleash-api/server-impl.js

@@ -13,23 +13,23 @@ function createApp (options) {
     const db = require('./lib/db/db-pool')(options.databaseUri);
 
     // Database dependecies (statefull)
-    const { eventDb, clientInstancesDb, clientMetricsDb, clientStrategiesDb } = require('./lib/db')(db);
+    const {
-
+        eventStore,
-    // Needs some cleanup!
+        featureToggleStore,
-    const EventStore = require('./lib/event-store');
+        strategyStore,
-    const eventStore = new EventStore(eventDb);
+        clientInstancesDb,
-    const featureDb = require('./lib/db/feature')(db, eventStore);
+        clientMetricsDb,
-    const strategyDb = require('./lib/db/strategy')(db, eventStore);
+        clientStrategiesDb,
+    } = require('./lib/db')(db);
 
     const config = {
         baseUriPath: options.baseUriPath,
         port: options.port,
         publicFolder: options.publicFolder,
         db,
-        eventDb,
         eventStore,
-        featureDb,
+        featureToggleStore,
-        strategyDb,
+        strategyStore,
         clientMetricsDb,
         clientStrategiesDb,
         clientInstancesDb,

packages/unleash-api/test/e2e/test-helper.js

@@ -6,20 +6,22 @@ const BPromise = require('bluebird');
 let request = require('supertest');
 const databaseUri = require('./database-config').getDatabaseUri();
 const knex = require('../../lib/db/db-pool')(databaseUri);
-const { eventDb, clientInstancesDb, clientStrategiesDb, clientMetricsDb } = require('../../lib/db')(knex);
+const {
-const EventStore = require('../../lib/event-store');
+    eventStore,
-const eventStore = new EventStore(eventDb);
+    featureToggleStore,
-const featureDb = require('../../lib/db/feature')(knex, eventStore);
+    strategyStore,
-const strategyDb = require('../../lib/db/strategy')(knex, eventStore);
+    clientInstancesDb,
+    clientStrategiesDb,
+    clientMetricsDb,
+} = require('../../lib/db')(knex);
 
 
 const app = require('../../app')({
     baseUriPath: '',
     db: knex,
-    eventDb,
     eventStore,
-    featureDb,
+    featureToggleStore,
-    strategyDb,
+    strategyStore,
     clientStrategiesDb,
     clientInstancesDb,
     clientMetricsDb,
@@ -42,7 +44,7 @@ function createStrategies () {
                 emails: 'String',
             },
         },
-    ], strategy => strategyDb._createStrategy(strategy));
+    ], strategy => strategyStore._createStrategy(strategy));
 }
 
 function createFeatures () {
@@ -106,7 +108,7 @@ function createFeatures () {
                 },
             }],
         },
-    ], feature => featureDb._createFeature(feature));
+    ], feature => featureToggleStore._createFeature(feature));
 }
 
 function destroyStrategies () {