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Posted to commits@trafficserver.apache.org by jp...@apache.org on 2012/05/11 06:01:20 UTC
[27/32] git commit: Initial lua remap plugin skeleton
Initial lua remap plugin skeleton
Project: http://git-wip-us.apache.org/repos/asf/trafficserver/repo
Commit: http://git-wip-us.apache.org/repos/asf/trafficserver/commit/4cf9720c
Tree: http://git-wip-us.apache.org/repos/asf/trafficserver/tree/4cf9720c
Diff: http://git-wip-us.apache.org/repos/asf/trafficserver/diff/4cf9720c
Branch: refs/heads/jpeach/lua
Commit: 4cf9720c058a2e7225b41bc7c8a1cb1c69f06d39
Parents: a79a638
Author: James Peach <jp...@apache.org>
Authored: Wed Apr 4 22:10:02 2012 -0700
Committer: James Peach <jp...@apache.org>
Committed: Thu May 10 20:23:40 2012 -0700
----------------------------------------------------------------------
build/ax_lua.m4 | 199 ++++++++++++++++++++++++++++++++++++++++++
configure.ac | 9 ++
plugins/Makefile.am | 2 +-
plugins/lua/Makefile.am | 33 +++++++
plugins/lua/lua.cc | 102 +++++++++++++++++++++
5 files changed, 344 insertions(+), 1 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/4cf9720c/build/ax_lua.m4
----------------------------------------------------------------------
diff --git a/build/ax_lua.m4 b/build/ax_lua.m4
new file mode 100644
index 0000000..5ee0915
--- /dev/null
+++ b/build/ax_lua.m4
@@ -0,0 +1,199 @@
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_lua.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_WITH_LUA
+# AX_PROG_LUA [(MIN-VERSION, [TOO-BIG-VERSION])]
+# AX_LUA_VERSION (MIN-VERSION, [TOO-BIG-VERSION])
+# AX_LUA_HEADERS
+# AX_LUA_HEADERS_VERSION (MIN-VERSION, [TOO-BIG-VERSION])
+# AX_LUA_LIBS
+# AX_LUA_READLINE
+#
+# DESCRIPTION
+#
+# Detect Lua interpreter, headers and libraries, optionally enforcing a
+# particular range of versions. If only one version is given, then exactly
+# this version is required.
+#
+# AX_WITH_LUA searches for a Lua interpreter and defines LUA if found.
+#
+# AX_PROG_LUA searches for a Lua interpreter in the given version range,
+# if any, and defines LUA if found, or stops with an error if not.
+#
+# AX_LUA_VERSION checks that the version of Lua is at least MIN-VERSION
+# and less than TOO-BIG-VERSION, if given.
+#
+# AX_LUA_HEADERS searches for Lua headers and defines HAVE_LUA_H and
+# HAVE_LUALIB_H if found, and defines LUA_INCLUDE to the preprocessor
+# flags needed, if any.
+#
+# AX_LUA_HEADERS_VERSION checks that the Lua headers' version is at least
+# MIN-VERSION, and less than TOO-BIG-VERSION, if given.
+#
+# AX_LUA_LIBS searches for Lua libraries and defines LUA_LIB if found.
+#
+# AX_LUA_READLINE configures Lua to be built with readline support, if
+# available. This macro requires AX_LIB_READLINE.
+#
+# Versions are specified as three-digit integers whose first digit is the
+# major version and last two are the minor version (the same format as
+# LUA_VERSION_NUM in lua.h); e.g. 501 for Lua 5.1. The revision (e.g. the
+# "3" in "5.1.3") is ignored.
+#
+# The following options are added by these macros:
+#
+# --with-lua-suffix=ARG Lua binaries and library files are
+# suffixed with ARG.
+#
+# LICENSE
+#
+# Copyright (c) 2011 Reuben Thomas <rr...@sc3d.org>
+# Copyright (c) 2009 Matthieu Moy <Ma...@imag.fr>
+# Copyright (c) 2009 Tom Payne <tw...@gmail.com>
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation, either version 3 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+# Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception, the respective Autoconf Macro's copyright owner
+# gives unlimited permission to copy, distribute and modify the configure
+# scripts that are the output of Autoconf when processing the Macro. You
+# need not follow the terms of the GNU General Public License when using
+# or distributing such scripts, even though portions of the text of the
+# Macro appear in them. The GNU General Public License (GPL) does govern
+# all other use of the material that constitutes the Autoconf Macro.
+#
+# This special exception to the GPL applies to versions of the Autoconf
+# Macro released by the Autoconf Archive. When you make and distribute a
+# modified version of the Autoconf Macro, you may extend this special
+# exception to the GPL to apply to your modified version as well.
+
+#serial 16
+
+dnl Helper function to declare extra options
+AC_DEFUN([_AX_LUA_OPTS],
+ [AC_ARG_WITH([lua-suffix],
+ [AS_HELP_STRING([--with-lua-suffix=ARG],
+ [Lua binary and library files are suffixed with ARG])])])dnl
+
+AC_DEFUN([AX_WITH_LUA],
+ [_AX_LUA_OPTS
+ if test "x$LUA" = x; then
+ AC_PATH_PROG(LUA, lua$with_lua_suffix)
+ fi])dnl
+
+AC_DEFUN([AX_PROG_LUA],
+ [AX_WITH_LUA
+ if test -z "$LUA"; then
+ AC_MSG_FAILURE([Lua not found])
+ fi
+ if test -n "$1"; then
+ AX_LUA_VERSION($1, $2)
+ fi
+ AC_SUBST(LUA)])dnl
+
+dnl Helper function to parse minimum & maximum versions
+AC_DEFUN([_AX_LUA_VERSIONS],
+ [lua_min_version=$1
+ lua_max_version=$2
+ if test "x$lua_min_version" = x; then
+ lua_min_version=0
+ fi
+ if test "x$lua_max_version" = x; then
+ lua_max_version=$(($lua_min_version + 1))
+ fi])
+
+AC_DEFUN([AX_LUA_VERSION],
+ [_AX_LUA_OPTS
+ _AX_LUA_VERSIONS($1, $2)
+ AC_MSG_CHECKING([Lua version is in range $lua_min_version <= v < $lua_max_version])
+ if test "x$LUA" != x; then
+ lua_text_version=$(LUA_INIT= $LUA -e 'print(_VERSION)' 2>&1 | cut -d' ' -f2)
+ case $lua_text_version in
+ 5.2*)
+ lua_version=502
+ ;;
+ 5.1*)
+ lua_version=501
+ ;;
+ 5.0*)
+ lua_version=500
+ ;;
+ 4.0*)
+ lua_version=400
+ ;;
+ *)
+ lua_version=-1
+ ;;
+ esac
+ if test $lua_version -ge "$lua_min_version" && test $lua_version -lt "$lua_max_version"; then
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ AC_MSG_FAILURE([Lua version not in desired range.])
+ fi
+ else
+ AC_MSG_RESULT([no])
+ AC_MSG_FAILURE([Lua version not in desired range.])
+ fi])dnl
+
+AC_DEFUN([AX_LUA_HEADERS],
+ [_AX_LUA_OPTS
+ LUA_OLD_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
+ AC_CHECK_HEADERS([lua.h lualib.h])
+ CPPFLAGS="$LUA_OLD_CPPFLAGS"])dnl
+
+AC_DEFUN([AX_LUA_LIBS],
+ [_AX_LUA_OPTS
+ AC_CHECK_LIB([m], [exp], [lua_extra_libs="$lua_extra_libs -lm"], [])
+ AC_CHECK_LIB([dl], [dlopen], [lua_extra_libs="$lua_extra_libs -ldl"], [])
+ AC_CHECK_LIB([lua$with_lua_suffix],
+ [lua_load],
+ [LUA_LIB="$LUA_LIB -llua$with_lua_suffix $lua_extra_libs"],
+ [],
+ [$LUA_LIB $lua_extra_libs])])dnl
+
+AC_DEFUN([AX_LUA_HEADERS_VERSION],
+ [_AX_LUA_OPTS
+ _AX_LUA_VERSIONS($1, $2)
+ AC_MSG_CHECKING([lua.h version is in range $lua_min_version <= v < $lua_max_version])
+ LUA_OLD_LIBS="$LIBS"
+ LIBS="$LIBS $LUA_LIB"
+ LUA_OLD_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
+ AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <lua.h>
+#include <stdlib.h>
+#include <stdio.h>
+int main()
+{
+ printf("(found %s, %d)... ", LUA_VERSION, LUA_VERSION_NUM);
+ if (LUA_VERSION_NUM >= $lua_min_version && LUA_VERSION_NUM < $lua_max_version)
+ exit(EXIT_SUCCESS);
+ exit(EXIT_FAILURE);
+}
+]])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ AC_MSG_FAILURE([lua.h version not in desired range])])
+ LIBS="$LUA_OLD_LIBS"
+ CPPFLAGS="$LUA_OLD_CPPFLAGS"])dnl
+
+AC_DEFUN([AX_LUA_READLINE],
+ [AX_LIB_READLINE
+ if test -n "$ac_cv_header_readline_readline_h" && test -n "$ac_cv_header_readline_history_h"; then
+ LUA_LIBS_CFLAGS="-DLUA_USE_READLINE $LUA_LIBS_CFLAGS"
+ fi])dnl
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/4cf9720c/configure.ac
----------------------------------------------------------------------
diff --git a/configure.ac b/configure.ac
index e191848..6cccd01 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1053,6 +1053,14 @@ AC_SUBST(arg_max)
# Check for libreadline/libedit
AX_LIB_READLINE
+#
+# Check for Lua, at least version 5.1
+AX_LUA_HEADERS_VERSION(501)
+AX_LUA_LIBS
+AC_SUBST(LUA_LIB)
+AC_SUBST(LUA_INCLUDE)
+AM_CONDITIONAL([BUILD_LUA_SUPPORT], [test -n "$LUA_LIB"])
+
# -----------------------------------------------------------------------------
# 5. CHECK FOR HEADER FILES
@@ -1449,6 +1457,7 @@ AC_CONFIG_FILES([plugins/conf_remap/Makefile])
AC_CONFIG_FILES([plugins/regex_remap/Makefile])
AC_CONFIG_FILES([plugins/header_filter/Makefile])
AC_CONFIG_FILES([plugins/stats_over_http/Makefile])
+AC_CONFIG_FILES([plugins/lua/Makefile])
# various tools
AC_CONFIG_FILES([tools/Makefile])
# example plugins
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/4cf9720c/plugins/Makefile.am
----------------------------------------------------------------------
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 14d0bf9..6d3d433 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -14,4 +14,4 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-SUBDIRS = conf_remap regex_remap header_filter stats_over_http
+SUBDIRS = conf_remap regex_remap header_filter stats_over_http lua
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/4cf9720c/plugins/lua/Makefile.am
----------------------------------------------------------------------
diff --git a/plugins/lua/Makefile.am b/plugins/lua/Makefile.am
new file mode 100644
index 0000000..6878e8c
--- /dev/null
+++ b/plugins/lua/Makefile.am
@@ -0,0 +1,33 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+pkglibdir = ${pkglibexecdir}
+
+if BUILD_LUA_SUPPORT
+
+AM_CXXFLAGS = \
+ ${LUA_INCLUDE} \
+ -I$(top_builddir)/proxy/api \
+ -I$(top_srcdir)/proxy/api
+
+
+pkglib_LTLIBRARIES = lua.la
+
+lua_la_LIBADD = ${LUA_LIB}
+lua_la_SOURCES = lua.cc
+lua_la_LDFLAGS = -module -avoid-version -shared
+
+endif
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/4cf9720c/plugins/lua/lua.cc
----------------------------------------------------------------------
diff --git a/plugins/lua/lua.cc b/plugins/lua/lua.cc
new file mode 100644
index 0000000..1f37a62
--- /dev/null
+++ b/plugins/lua/lua.cc
@@ -0,0 +1,102 @@
+/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <ts/ts.h>
+#include <ts/remap.h>
+
+extern "C" {
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+}
+
+static void *
+LuaAllocate(void * ud, void * ptr, size_t osize, size_t nsize)
+{
+ TSReleaseAssert(ud == NULL);
+
+ if (nsize == 0) {
+ TSfree(ptr);
+ return NULL;
+ }
+
+ return TSrealloc(ptr, nsize);
+}
+
+static int
+LuaDebug(lua_State * lua)
+{
+ const char * tag = luaL_checkstring(lua, 1);
+ const char * message = luaL_checkstring(lua, 2);
+
+ TSDebug(tag, "%s", message);
+ return 0;
+}
+
+struct LuaExport
+{
+ lua_CFunction function;
+ const char * name;
+};
+
+static LuaExport LUAEXPORTS[] =
+{
+ { LuaDebug, "ts.debug"},
+ { NULL, NULL}
+};
+
+TSReturnCode
+TSRemapInit(TSRemapInterface * api_info, char * errbuf, int errbuf_size)
+{
+ TSDebug("lua", "loading lua plugin");
+ return TS_SUCCESS;
+}
+
+TSReturnCode
+TSRemapNewInstance(int argc, char * argv[], void ** ih, char * errbuf, int errbuf_size)
+{
+ lua_State * lua;
+
+ lua = lua_newstate(LuaAllocate, NULL);
+ if (lua == NULL) {
+ return TS_ERROR;
+ }
+
+ luaL_openlibs(lua);
+
+ for (const LuaExport * e = LUAEXPORTS; e->function != NULL; ++e) {
+ lua_pushcfunction(lua, e->function);
+ lua_setglobal(lua, e->name);
+ }
+
+ *ih = lua;
+ return TS_SUCCESS;
+}
+
+void
+TSRemapDeleteInstance(void * ih)
+{
+ lua_State * lua = (lua_State *)ih;
+ lua_close(lua);
+}
+
+TSRemapStatus
+TSRemapDoRemap(void * ih, TSHttpTxn rh, TSRemapRequestInfo *rri)
+{
+ return TSREMAP_NO_REMAP;
+}