cls-lua: write object classes in Lua

Introduces cls_lua that allows object classes to be created dynamically
using the Lua language. Each request is processed in an empty Lua VM
instance, and scripts can be submitted using bufferlist or JSON
encoding.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>

src/cls/CMakeLists.txt

@@ -128,3 +128,17 @@ endif (WITH_CEPHFS)
 
 add_library(cls_numops_client STATIC numops/cls_numops_client.cc)
 
+add_library(cls_lua SHARED
+    lua/cls_lua.cc
+    lua/lua_bufferlist.cc
+)
+set_target_properties(cls_lua PROPERTIES VERSION "1.0.0" SOVERSION "1")
+install(TARGETS cls_lua DESTINATION lib/rados-classes)
+target_link_libraries(cls_lua
+    liblua
+    json_spirit
+)
+
+add_library(cls_lua_client
+    lua/cls_lua_client.cc
+)

src/cls/Makefile-client.am

@@ -67,6 +67,11 @@ libcls_journal_client_la_SOURCES = \
 noinst_LTLIBRARIES += libcls_journal_client.la
 DENCODER_DEPS += libcls_journal_client.la
 
+libcls_lua_client_la_SOURCES = cls/lua/cls_lua_client.cc
+libcls_lua_client_la_CPPFLAGS = $(LIBLUA_CPPFLAGS) $(AM_CPPFLAGS)
+libcls_lua_client_la_LIBADD = $(LIBLUA)
+noinst_LTLIBRARIES += libcls_lua_client.la
+
 noinst_HEADERS += \
 	cls/lock/cls_lock_types.h \
 	cls/lock/cls_lock_ops.h \
@@ -101,4 +106,7 @@ noinst_HEADERS += \
 	cls/cephfs/cls_cephfs.h \
 	cls/cephfs/cls_cephfs_client.h \
 	cls/journal/cls_journal_client.h \
-	cls/journal/cls_journal_types.h
+	cls/journal/cls_journal_types.h \
+	cls/lua/cls_lua.h \
+	cls/lua/cls_lua_client.h \
+	cls/lua/cls_lua_ops.h

src/cls/Makefile-server.am

@@ -81,4 +81,12 @@ libcls_journal_la_LIBADD = $(PTHREAD_LIBS) $(EXTRALIBS)
 libcls_journal_la_LDFLAGS = ${AM_LDFLAGS} -module -avoid-version -shared -export-symbols-regex '.*__cls_.*'
 radoslib_LTLIBRARIES += libcls_journal.la
 
+libcls_lua_la_SOURCES = \
+	cls/lua/cls_lua.cc \
+	cls/lua/lua_bufferlist.cc
+libcls_lua_la_CPPFLAGS = $(LIBLUA_CPPFLAGS) $(AM_CPPFLAGS)
+libcls_lua_la_LIBADD = $(LIBLUA)
+libcls_lua_la_LDFLAGS = ${AM_LDFLAGS} -module -avoid-version -shared -export-symbols-regex '.*__cls_.*'
+radoslib_LTLIBRARIES += libcls_lua.la
+
 endif # WITH_OSD