fix(postgres/connection-manager): Only fetch OIDs once (#8733)

* fix(postgres/connection-manager): Only fetch OIDs once

* fix: make sure postgres extensions are enabled on travis

.travis.yml

@@ -25,7 +25,7 @@ addons:
 before_script:
   - "mysql -e 'create database sequelize_test;'"
   - "psql -c 'create database sequelize_test;' -U postgres"
-  - "psql sequelize_test -c 'create extension postgis;' -U postgres"
+  - "psql sequelize_test -c 'create extension postgis;create extension if not exists hstore;create extension if not exists btree_gist;' -U postgres"
 
 script:
   - "if [ $COVERAGE ]; then npm run cover && bash <(curl -s https://codecov.io/bash) -f coverage/lcov.info; else npm run test; fi"

lib/dialects/postgres/connection-manager.js

@@ -29,6 +29,7 @@ ConnectionManager = function(dialect, sequelize) {
     throw err;
   }
 
+  this._oidsFetched = false;
   this.refreshTypeParser(dataTypes.postgres);
 };
 
@@ -148,7 +149,7 @@ ConnectionManager.prototype.connect = function(config) {
     }
 
     // fetch OIDs for Geometry / Hstore / Enum as they are dynamic
-    if (dataTypes.HSTORE.types.postgres.oids.length === 0) {
+    if (!self._oidsFetched) {
       query += 'SELECT typname, typtype, oid, typarray FROM pg_type WHERE (typtype = \'b\' AND typname IN (\'hstore\', \'geometry\', \'geography\')) OR (typtype = \'e\')';
     }
 
@@ -172,6 +173,8 @@ ConnectionManager.prototype.connect = function(config) {
 
         self.$refreshTypeParser(type);
       }).on('end', function () {
+        self._oidsFetched = true;
+
         resolve();
       });
     });

test/integration/dialects/postgres/connection-manager.test.js

@@ -25,12 +25,5 @@ if (dialect.match(/^postgres/)) {
     it('should correctly parse the moment based timezone', function() {
       return checkTimezoneParsing(this.sequelize.options);
     });
-
-    it('should correctly parse the moment based timezone while fetching hstore oids', function() {
-      // reset oids so we need to refetch them
-      DataTypes.HSTORE.types.postgres.oids = [];
-      DataTypes.HSTORE.types.postgres.array_oids = [];
-      return checkTimezoneParsing(this.sequelize.options);
-    });
   });
 }

test/integration/support.js

 'use strict';
 
-var Support = require('../support')
-  , dialect = Support.getTestDialect();
-
-before(function() {
-  if (dialect !== 'postgres' && dialect !== 'postgres-native') {
-    return;
-  }
-  return Support.sequelize.Promise.all([
-    Support.sequelize.query('CREATE EXTENSION IF NOT EXISTS hstore', {raw: true}),
-    Support.sequelize.query('CREATE EXTENSION IF NOT EXISTS btree_gist', {raw: true})
-  ]);
-});
+var Support = require('../support');
 
 beforeEach(function() {
   this.sequelize.test.trackRunningQueries();