From 8f5cf8cd2dba33cc42dcc3f0379414f3199decec Mon Sep 17 00:00:00 2001
From: Chris Arcand <chris@chrisarcand.com>
Date: Wed, 11 Oct 2017 10:27:34 -0500
Subject: [PATCH] Add PostgreSQL version restriction

ManageIQ is only compatible with PostgreSQL 9.4 or 9.5, and many odd
errors take a while to find when it's a simple version problem that
could be found immediately.

This adds a restriction to the AR adapter to maintain lazy-loading the
connection as expected.
---
 config/initializers/postgres_required_versions.rb | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 config/initializers/postgres_required_versions.rb

diff --git a/config/initializers/postgres_required_versions.rb b/config/initializers/postgres_required_versions.rb
new file mode 100644
index 00000000000..e98a1e3a4f6
--- /dev/null
+++ b/config/initializers/postgres_required_versions.rb
@@ -0,0 +1,8 @@
+ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.prepend Module.new {
+  def initialize(*args)
+    super
+    if postgresql_version < 90400 || postgresql_version >= 90600
+      raise "The version of PostgreSQL being connected to is incompatible with #{I18n.t("product.name")}"
+    end
+  end
+}