Merge branch 'ldap_connections'

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Conflicts:
	CHANGELOG

CHANGELOG

@@ -18,6 +18,7 @@ v 6.7.0
   - Add webhook when a new tag is pushed (Jeroen van Baarsen)
   - Add button for toggling inline comments in diff view
   - Add retry feature for repository import
+  - Reuse the GitLab LDAP connection within each request
 v 6.6.2
   - Fix 500 error on branch/tag create or remove via UI

app/controllers/application_controller.rb

@@ -182,13 +182,15 @@ class ApplicationController < ActionController::Base
   def ldap_security_check
     if current_user && current_user.requires_ldap_check?
-      if gitlab_ldap_access.allowed?(current_user)
-        current_user.last_credential_check_at = Time.now
-        current_user.save
-      else
-        sign_out current_user
-        flash[:alert] = "Access denied for your LDAP account."
-        redirect_to new_user_session_path
+      gitlab_ldap_access do |access|
+        if access.allowed?(current_user)
+          current_user.last_credential_check_at = Time.now
+          current_user.save
+        else
+          sign_out current_user
+          flash[:alert] = "Access denied for your LDAP account."
+          redirect_to new_user_session_path
+        end
       end
     end
   end
@@ -198,8 +200,8 @@ class ApplicationController < ActionController::Base
     @event_filter ||= EventFilter.new(filters)
   end
-  def gitlab_ldap_access
-    Gitlab::LDAP::Access.new
+  def gitlab_ldap_access(&block)
+    Gitlab::LDAP::Access.open { |access| block.call(access) }
   end
   # JSON for infinite scroll via Pager object

lib/gitlab/ldap/access.rb

 module Gitlab
   module LDAP
     class Access
+      attr_reader :adapter
+
+      def self.open(&block)
+        Gitlab::LDAP::Adapter.open do |adapter|
+          block.call(self.new(adapter))
+        end
+      end
+
+      def initialize(adapter=nil)
+        @adapter = adapter
+      end
+
       def allowed?(user)
-        !!Gitlab::LDAP::Person.find_by_dn(user.extern_uid)
+        !!Gitlab::LDAP::Person.find_by_dn(user.extern_uid, adapter)
       rescue
         false
       end

lib/gitlab/ldap/adapter.rb

@@ -3,7 +3,17 @@ module Gitlab
     class Adapter
       attr_reader :ldap
-      def initialize
+      def self.open(&block)
+        Net::LDAP.open(adapter_options) do |ldap|
+          block.call(self.new(ldap))
+        end
+      end
+
+      def self.config
+        Gitlab.config.ldap
+      end
+
+      def self.adapter_options
         encryption = config['method'].to_s == 'ssl' ? :simple_tls : nil
         options = {
@@ -23,8 +33,12 @@ module Gitlab
         if config['password'] || config['bind_dn']
           options.merge!(auth_options)
         end
-        @ldap = Net::LDAP.new(options)
+        options
+      end
+
+      def initialize(ldap=nil)
+        @ldap = ldap || Net::LDAP.new(self.class.adapter_options)
       end
       def users(field, value)
@@ -65,7 +79,7 @@ module Gitlab
       private
       def config
-        @config ||= Gitlab.config.ldap
+        @config ||= self.class.config
       end
     end
   end

lib/gitlab/ldap/person.rb

 module Gitlab
   module LDAP
     class Person
-      def self.find_by_uid(uid)
-        Gitlab::LDAP::Adapter.new.user(config.uid, uid)
+      def self.find_by_uid(uid, adapter=nil)
+        adapter ||= Gitlab::LDAP::Adapter.new
+        adapter.user(config.uid, uid)
       end
-      def self.find_by_dn(dn)
-        Gitlab::LDAP::Adapter.new.user('dn', dn)
+      def self.find_by_dn(dn, adapter=nil)
+        adapter ||= Gitlab::LDAP::Adapter.new
+        adapter.user('dn', dn)
       end
       def initialize(entry)