Merge branch 'system-checks-incoming-email' into 'master'

Move Incoming Email checks to System Checks

See merge request !14028

7 files changed, 179 insertions, 15 deletions

diff --git a/lib/system_check/app/init_script_up_to_date_check.rb b/lib/system_check/app/init_script_up_to_date_check.rb
index 015c7ed1731..53a47eb0f42 100644
--- a/lib/system_check/app/init_script_up_to_date_check.rb
+++ b/lib/system_check/app/init_script_up_to_date_check.rb
@@ -7,26 +7,22 @@ module SystemCheck
       set_skip_reason 'skipped (omnibus-gitlab has no init script)'
 
       def skip?
-        omnibus_gitlab?
-      end
+        return true if omnibus_gitlab?
 
-      def multi_check
-        recipe_path = Rails.root.join('lib/support/init.d/', 'gitlab')
+        unless init_file_exists?
+          self.skip_reason = "can't check because of previous errors"
 
-        unless File.exist?(SCRIPT_PATH)
-          $stdout.puts "can't check because of previous errors".color(:magenta)
-          return
+          true
         end
+      end
+
+      def check?
+        recipe_path = Rails.root.join('lib/support/init.d/', 'gitlab')
 
         recipe_content = File.read(recipe_path)
         script_content = File.read(SCRIPT_PATH)
 
-        if recipe_content == script_content
-          $stdout.puts 'yes'.color(:green)
-        else
-          $stdout.puts 'no'.color(:red)
-          show_error
-        end
+        recipe_content == script_content
       end
 
       def show_error
@@ -38,6 +34,12 @@ module SystemCheck
         )
         fix_and_rerun
       end
+
+      private
+
+      def init_file_exists?
+        File.exist?(SCRIPT_PATH)
+      end
     end
   end
 end
diff --git a/lib/system_check/base_check.rb b/lib/system_check/base_check.rb
index 7f9e2ffffc2..0f5742dd67f 100644
--- a/lib/system_check/base_check.rb
+++ b/lib/system_check/base_check.rb
@@ -62,6 +62,25 @@ module SystemCheck
       call_or_return(@skip_reason) || 'skipped'
     end
 
+    # Define a reason why we skipped the SystemCheck (during runtime)
+    #
+    # This is used when you need dynamic evaluation like when you have
+    # multiple reasons why a check can fail
+    #
+    # @param [String] reason to be displayed
+    def skip_reason=(reason)
+      @skip_reason = reason
+    end
+
+    # Skip reason defined during runtime
+    #
+    # This value have precedence over the one defined in the subclass
+    #
+    # @return [String] the reason
+    def skip_reason
+      @skip_reason
+    end
+
     # Does the check support automatically repair routine?
     #
     # @return [Boolean] whether check implemented `#repair!` method or not
diff --git a/lib/system_check/incoming_email/foreman_configured_check.rb b/lib/system_check/incoming_email/foreman_configured_check.rb
new file mode 100644
index 00000000000..1db7bf2b782
--- /dev/null
+++ b/lib/system_check/incoming_email/foreman_configured_check.rb
@@ -0,0 +1,23 @@
+module SystemCheck
+  module IncomingEmail
+    class ForemanConfiguredCheck < SystemCheck::BaseCheck
+      set_name 'Foreman configured correctly?'
+
+      def check?
+        path = Rails.root.join('Procfile')
+
+        File.exist?(path) && File.read(path) =~ /^mail_room:/
+      end
+
+      def show_error
+        try_fixing_it(
+          'Enable mail_room in your Procfile.'
+        )
+        for_more_information(
+          'doc/administration/reply_by_email.md'
+        )
+        fix_and_rerun
+      end
+    end
+  end
+end
diff --git a/lib/system_check/incoming_email/imap_authentication_check.rb b/lib/system_check/incoming_email/imap_authentication_check.rb
new file mode 100644
index 00000000000..dee108d987b
--- /dev/null
+++ b/lib/system_check/incoming_email/imap_authentication_check.rb
@@ -0,0 +1,45 @@
+module SystemCheck
+  module IncomingEmail
+    class ImapAuthenticationCheck < SystemCheck::BaseCheck
+      set_name 'IMAP server credentials are correct?'
+
+      def check?
+        if mailbox_config
+          begin
+            imap = Net::IMAP.new(config[:host], port: config[:port], ssl: config[:ssl])
+            imap.starttls if config[:start_tls]
+            imap.login(config[:email], config[:password])
+            connected = true
+          rescue
+            connected = false
+          end
+        end
+
+        connected
+      end
+
+      def show_error
+        try_fixing_it(
+          'Check that the information in config/gitlab.yml is correct'
+        )
+        for_more_information(
+          'doc/administration/reply_by_email.md'
+        )
+        fix_and_rerun
+      end
+
+      private
+
+      def mailbox_config
+        return @config if @config
+
+        config_path = Rails.root.join('config', 'mail_room.yml').to_s
+        erb = ERB.new(File.read(config_path))
+        erb.filename = config_path
+        config_file = YAML.load(erb.result)
+
+        @config = config_file[:mailboxes]&.first
+      end
+    end
+  end
+end
diff --git a/lib/system_check/incoming_email/initd_configured_check.rb b/lib/system_check/incoming_email/initd_configured_check.rb
new file mode 100644
index 00000000000..ea23b8ef49c
--- /dev/null
+++ b/lib/system_check/incoming_email/initd_configured_check.rb
@@ -0,0 +1,32 @@
+module SystemCheck
+  module IncomingEmail
+    class InitdConfiguredCheck < SystemCheck::BaseCheck
+      set_name 'Init.d configured correctly?'
+
+      def skip?
+        omnibus_gitlab?
+      end
+
+      def check?
+        mail_room_configured?
+      end
+
+      def show_error
+        try_fixing_it(
+          'Enable mail_room in the init.d configuration.'
+        )
+        for_more_information(
+          'doc/administration/reply_by_email.md'
+        )
+        fix_and_rerun
+      end
+
+      private
+
+      def mail_room_configured?
+        path = '/etc/default/gitlab'
+        File.exist?(path) && File.read(path).include?('mail_room_enabled=true')
+      end
+    end
+  end
+end
diff --git a/lib/system_check/incoming_email/mail_room_running_check.rb b/lib/system_check/incoming_email/mail_room_running_check.rb
new file mode 100644
index 00000000000..c1807501829
--- /dev/null
+++ b/lib/system_check/incoming_email/mail_room_running_check.rb
@@ -0,0 +1,43 @@
+module SystemCheck
+  module IncomingEmail
+    class MailRoomRunningCheck < SystemCheck::BaseCheck
+      set_name 'MailRoom running?'
+
+      def skip?
+        return true if omnibus_gitlab?
+
+        unless mail_room_configured?
+          self.skip_reason = "can't check because of previous errors"
+          true
+        end
+      end
+
+      def check?
+        mail_room_running?
+      end
+
+      def show_error
+        try_fixing_it(
+          sudo_gitlab('RAILS_ENV=production bin/mail_room start')
+        )
+        for_more_information(
+          see_installation_guide_section('Install Init Script'),
+          'see log/mail_room.log for possible errors'
+        )
+        fix_and_rerun
+      end
+
+      private
+
+      def mail_room_configured?
+        path = '/etc/default/gitlab'
+        File.exist?(path) && File.read(path).include?('mail_room_enabled=true')
+      end
+
+      def mail_room_running?
+        ps_ux, _ = Gitlab::Popen.popen(%w(ps uxww))
+        ps_ux.include?("mail_room")
+      end
+    end
+  end
+end
diff --git a/lib/system_check/simple_executor.rb b/lib/system_check/simple_executor.rb
index 6604b1078cf..00221f77cf4 100644
--- a/lib/system_check/simple_executor.rb
+++ b/lib/system_check/simple_executor.rb
@@ -23,7 +23,7 @@ module SystemCheck
     #
     # @param [BaseCheck] check class
     def <<(check)
-      raise ArgumentError unless check < BaseCheck
+      raise ArgumentError unless check.is_a?(Class) && check < BaseCheck
       @checks << check
     end
 
@@ -48,7 +48,7 @@ module SystemCheck
 
       # When implements skip method, we run it first, and if true, skip the check
       if check.can_skip? && check.skip?
-        $stdout.puts check_klass.skip_reason.color(:magenta)
+        $stdout.puts check.skip_reason.try(:color, :magenta) || check_klass.skip_reason.color(:magenta)
         return
       end