From 8e271d4f2a29bf1935cc2b3ecfecd0f444b933ba Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Thu, 18 Dec 2008 17:53:48 -0800
Subject: [PATCH] MogileFS::Mysql: read-only methods for MogileFS::MogileFS
 compat

These methods help allow MogileFS::Mysql objects to be used as a
drop-in replacement for MogileFS::MogileFS in read-only
situations.
---
 lib/mogilefs/mysql.rb | 10 ++++++++++
 test/test_mysql.rb    | 28 ++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/lib/mogilefs/mysql.rb b/lib/mogilefs/mysql.rb
index 4533db1..c8a35e0 100644
--- a/lib/mogilefs/mysql.rb
+++ b/lib/mogilefs/mysql.rb
@@ -109,6 +109,16 @@ class MogileFS::Mysql
     urls
   end
 
+  def readonly=(unused); true; end
+  def readonly; true; end
+  def readonly?; true; end
+  def store_file(key, klass, file); raise MogileFS::ReadOnlyError; end
+  def store_content(key, klass, content); raise MogileFS::ReadOnlyError; end
+  def new_file(key, klass, bytes=0, &block); raise MogileFS::ReadOnlyError; end
+  def rename(from, to); raise MogileFS::ReadOnlyError; end
+  def delete(key); raise MogileFS::ReadOnlyError; end
+  def sleep(duration); Kernel.sleep(duration || 10); {}; end
+
   private
 
     unless defined? GET_DEVICES
diff --git a/test/test_mysql.rb b/test/test_mysql.rb
index 2e7cf48..822916f 100644
--- a/test/test_mysql.rb
+++ b/test/test_mysql.rb
@@ -127,4 +127,32 @@ class TestMogileFS__Mysql < Test::Unit::TestCase
     assert_equal 456, @mg.size('foo')
   end
 
+  def test_store_file_readonly
+    assert_raises(MogileFS::ReadOnlyError) do
+      @mg.store_file 'new_key', 'test', '/dev/null'
+    end
+  end
+
+  def test_store_content_readonly
+    assert_raises(MogileFS::ReadOnlyError) do
+      @mg.store_content 'new_key', 'test', 'data'
+    end
+  end
+
+  def test_new_file_readonly
+    assert_raises(MogileFS::ReadOnlyError) { @mg.new_file 'new_key', 'test' }
+  end
+
+  def test_rename_readonly
+    assert_raises(MogileFS::ReadOnlyError) { @mg.rename 'a', 'b' }
+  end
+
+  def test_delete_readonly
+    assert_raises(MogileFS::ReadOnlyError) { @mg.delete 'no_such_key' }
+  end
+
+  def test_sleep
+    assert_nothing_raised { assert_equal({}, @mg.sleep(1)) }
+  end
+
 end
-- 
2.11.4.GIT