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[redis.git] / src / scripting.c

diff --git a/src/scripting.c b/src/scripting.c
index 01aa2006f3ddd02fad86bd09ac9c7b5ac25c768a..d614f42a13f87d14d383604ff59c1224b8d70fa9 100644 (file)
--- a/src/scripting.c
+++ b/src/scripting.c
@@ -1,3 +1,32 @@
+/*
+ * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #include "redis.h"
 #include "sha1.h"
 #include "rand.h"
@@ -503,7 +532,7 @@ void scriptingInit(void) {
     /* Initialize a dictionary we use to map SHAs to scripts.
      * This is useful for replication, as we need to replicate EVALSHA
      * as EVAL, so we need to remember the associated script. */
-    server.lua_scripts = dictCreate(&dbDictType,NULL);
+    server.lua_scripts = dictCreate(&shaScriptObjectDictType,NULL);
 
     /* Register the redis commands table and fields */
     lua_newtable(lua);
@@ -544,14 +573,6 @@ void scriptingInit(void) {
     lua_pushcfunction(lua, luaRedisSha1hexCommand);
     lua_settable(lua, -3);
 
-    /* redis.NIL */
-    lua_pushstring(lua, "NIL");
-    lua_newtable(lua);
-    lua_pushstring(lua, "nilbulk");
-    lua_pushboolean(lua, 1);
-    lua_settable(lua, -3);
-    lua_settable(lua, -3);
-
     /* redis.error_reply and redis.status_reply */
     lua_pushstring(lua, "error_reply");
     lua_pushcfunction(lua, luaRedisErrorReplyCommand);
@@ -654,30 +675,9 @@ void luaReplyToRedisReply(redisClient *c, lua_State *lua) {
         addReplyLongLong(c,(long long)lua_tonumber(lua,-1));
         break;
     case LUA_TTABLE:
-        /* The table can be an array or it may be in a special format that
-         * Lua uses to return special Redis protocol data types.
-         *
-         * 1) Errors are retuned as a single element table with 'err' field.
-         * 2) Status reply are returned as a single element table with 'ok'
-         *    field.
-         * 3) A Redis nil bulk reply is returned as a single element table
-         *    with 'nilbulk' field set to true.
-         *
-         * All the rest is considered just an array and is translated into
-         * a Redis multi bulk reply. */
-
-        /* Nil bulk reply */
-        lua_pushstring(lua,"nilbulk");
-        lua_gettable(lua,-2);
-        t = lua_type(lua,-1);
-        if (t == LUA_TBOOLEAN) {
-            addReply(c,shared.nullbulk);
-            lua_pop(lua,2);
-            return;
-        }
-        lua_pop(lua,1);
-
-        /* Error reply */
+        /* We need to check if it is an array, an error, or a status reply.
+         * Error are returned as a single element table with 'err' field.
+         * Status replies are returned as single elment table with 'ok' field */
         lua_pushstring(lua,"err");
         lua_gettable(lua,-2);
         t = lua_type(lua,-1);
@@ -689,9 +689,8 @@ void luaReplyToRedisReply(redisClient *c, lua_State *lua) {
             lua_pop(lua,2);
             return;
         }
-        lua_pop(lua,1);
 
-        /* Status reply */
+        lua_pop(lua,1);
         lua_pushstring(lua,"ok");
         lua_gettable(lua,-2);
         t = lua_type(lua,-1);
@@ -702,7 +701,6 @@ void luaReplyToRedisReply(redisClient *c, lua_State *lua) {
             sdsfree(ok);
             lua_pop(lua,1);
         } else {
-            /* Multi bulk reply. */
             void *replylen = addDeferredMultiBulkLength(c);
             int j = 1, mbulklen = 0;
 
@@ -1008,9 +1006,9 @@ void scriptCommand(redisClient *c) {
         sdsfree(sha);
     } else if (c->argc == 2 && !strcasecmp(c->argv[1]->ptr,"kill")) {
         if (server.lua_caller == NULL) {
-            addReplyError(c,"No scripts in execution right now.");
+            addReplySds(c,sdsnew("-NOTBUSY No scripts in execution right now.\r\n"));
         } else if (server.lua_write_dirty) {
-            addReplyError(c, "Sorry the script already executed write commands against the dataset. You can either wait the script termination or kill the server in an hard way using the SHUTDOWN NOSAVE command.");
+            addReplySds(c,sdsnew("-UNKILLABLE Sorry the script already executed write commands against the dataset. You can either wait the script termination or kill the server in an hard way using the SHUTDOWN NOSAVE command.\r\n"));
         } else {
             server.lua_kill = 1;
             addReply(c,shared.ok);