diff --git a/devops-service/lib/executors/server_executor.rb b/devops-service/lib/executors/server_executor.rb
index 53fd4a0..1ea9b3a 100644
--- a/devops-service/lib/executors/server_executor.rb
+++ b/devops-service/lib/executors/server_executor.rb
@@ -3,6 +3,7 @@ require "lib/executors/expiration_scheduler"
 require "lib/puts_and_flush"
 require "hooks"
 require 'net/ssh'
+require_relative 'server_operation_result'
 
 module Devops
   module Executor
@@ -10,18 +11,6 @@ module Devops
       include Hooks
       include PutsAndFlush
 
-      ERROR_CODES = {
-        server_bootstrap_fail: 2,
-        server_cannot_update_tags: 3,
-        server_bootstrap_private_ip_unset: 4,
-        server_not_in_chef_nodes: 5,
-        server_bootstrap_unknown_error: 7,
-        deploy_unknown_error: 6,
-        deploy_failed: 8,
-        creating_server_unknown_error: 9,
-        creating_server_in_cloud_failed: 10
-      }
-
       # waiting for 5*60 seconds (5 min)
       MAX_SSH_RETRIES_AMOUNT = 60
 
@@ -56,21 +45,8 @@ module Devops
         @current_user = options[:current_user]
       end
 
-      def self.error_code(reason)
-        ERROR_CODES.fetch(reason)
-      end
-
-      def self.reason_from_error_code(integer_code)
-        ERROR_CODES.key(integer_code) || :unknown_error
-      end
-
-      def self.error_occured_during_bootstrap?(code)
-        reason = reason_from_error_code(code)
-        [:server_bootstrap_fail, :server_not_in_chef_nodes, :server_bootstrap_unknown_error].include?(reason)
-      end
-
       def error_code(reason)
-        self.class.error_code(reason)
+        ServerOperationResult.code_of_reason(reason)
       end
 
       def create_server_object options
diff --git a/devops-service/lib/executors/server_operation_result.rb b/devops-service/lib/executors/server_operation_result.rb
new file mode 100644
index 0000000..ede226f
--- /dev/null
+++ b/devops-service/lib/executors/server_operation_result.rb
@@ -0,0 +1,41 @@
+module Devops
+  module Executor
+    class ServerOperationResult
+      RESULT_CODES = {
+        ok: 0,
+        server_bootstrap_fail: 2,
+        server_cannot_update_tags: 3,
+        server_bootstrap_private_ip_unset: 4,
+        server_not_in_chef_nodes: 5,
+        server_bootstrap_unknown_error: 7,
+        deploy_unknown_error: 6,
+        deploy_failed: 8,
+        creating_server_unknown_error: 9,
+        creating_server_in_cloud_failed: 10
+      }
+
+      attr_reader :code
+
+      def initialize(error_code)
+        @code = error_code
+      end
+
+      def ok?
+        @code == 0
+      end
+
+      def reason
+        RESULT_CODES.key(@code) || :unknown_error
+      end
+
+      def occured_during_bootstrap?(code)
+        [:server_bootstrap_fail, :server_not_in_chef_nodes, :server_bootstrap_unknown_error].include?(reason)
+      end
+
+      def self.code_of_reason(reason)
+        RESULT_CODES.fetch(reason)
+      end
+
+    end
+  end
+end
\ No newline at end of file
diff --git a/devops-service/spec/executors/server_executor_spec.rb b/devops-service/spec/executors/server_executor_spec.rb
index 97f94ba..8447642 100644
--- a/devops-service/spec/executors/server_executor_spec.rb
+++ b/devops-service/spec/executors/server_executor_spec.rb
@@ -53,18 +53,6 @@ RSpec.describe Devops::Executor::ServerExecutor, type: :executor, stubbed_connec
   end
 
 
-  describe '.reason_from_error_code' do
-    it 'returns symbol given an integer' do
-      expect(described_class.reason_from_error_code(2)).to eq :server_bootstrap_fail
-    end
-
-    it "returns :unknown_error if can't recognize error code" do
-      expect(described_class.reason_from_error_code(123)).to eq :unknown_error
-    end
-  end
-
-
-
   describe '#create_server_object' do
     it 'builds Server object' do
       server = executor.create_server_object('created_by' => 'me')
diff --git a/devops-service/workers/stack_bootstrap/stack_servers_bootstrapper.rb b/devops-service/workers/stack_bootstrap/stack_servers_bootstrapper.rb
index 302232b..bb0d3e9 100644
--- a/devops-service/workers/stack_bootstrap/stack_servers_bootstrapper.rb
+++ b/devops-service/workers/stack_bootstrap/stack_servers_bootstrapper.rb
@@ -28,15 +28,16 @@ class StackServersBootstrapper
   private
 
   def check_bootstrap_result!(server_id, result_code, job_id)
-    if result_code == 0
+    operation_result = Devops::Executor::ServerOperationResult.new(result_code)
+
+    if operation_result.ok?
       puts_and_flush "Server '#{server_id}' has been bootstraped (job #{job_id})."
       return
     end
 
-    reason = Devops::Executor::ServerExecutor.reason_from_error_code(result_code)
-    puts_and_flush "Server '#{server_id}' bootstraped failed (job #{job_id}). Reason: #{reason}"
+    puts_and_flush "Server '#{server_id}' bootstraped failed (job #{job_id}). Reason: #{operation_result.reason}"
 
-    if Devops::Executor::ServerExecutor.error_occured_during_bootstrap?(result_code)
+    if operation_result.occured_during_bootstrap?(operation_result.code)
       raise StackServerBootstrapError # will cause rollback of a stack
     else
       raise StackServerDeployError # will not cause rollback of a stack