Update versioning fields for compatibility (#47)

New info information to be used to determine the valkey versioning info.

Internally, introduce new define values for "SERVER_VERSION" which is
different from the Redis compatibility version, "REDIS_VERSION".

Add two new info fields:
`server_version`: The Valkey server version
`server_name`: Indicates that the server is valkey.

Add one new RDB field: `server_ver`, which indicates the valkey version
that produced the server.

Add 3 new LUA globals: `SERVER_VERSION_NUM`, `SERVER_VERSION`, and
`SERVER_NAME`. Which reflect the valkey version instead of the Redis
compatibility version.

Also clean up various places where Redis and configuration was being
used that is no longer necessary.

---------

Signed-off-by: Madelyn Olson <madelyneolson@gmail.com>

src/cli_common.c

@@ -413,7 +413,7 @@ sds escapeJsonString(sds s, const char *p, size_t len) {
 }
 
 sds cliVersion(void) {
-    sds version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
+    sds version = sdscatprintf(sdsempty(), "%s", SERVER_VERSION);
 
     /* Add git commit and working tree status when available. */
     if (strtoll(serverGitSHA1(),NULL,16)) {

src/config.c

@@ -634,8 +634,7 @@ void loadServerConfigFromString(char *config) {
 
 loaderr:
     if (argv) sdsfreesplitres(argv,argc);
-    fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR (Redis %s) ***\n",
-        REDIS_VERSION);
+    fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR (Version %s) ***\n", SERVER_VERSION);
     if (i < totlines) {
         fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
         fprintf(stderr, ">>> '%s'\n", lines[i]);

src/debug.c

@@ -2252,7 +2252,7 @@ static void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
 
     bugReportStart();
     serverLog(LL_WARNING,
-        "Redis %s crashed by signal: %d, si_code: %d", REDIS_VERSION, sig, info->si_code);
+        SERVER_NAME " %s crashed by signal: %d, si_code: %d", SERVER_VERSION, sig, info->si_code);
     if (sig == SIGSEGV || sig == SIGBUS) {
         serverLog(LL_WARNING,
         "Accessing address: %p", (void*)info->si_addr);

src/lolwut.c

@@ -44,7 +44,7 @@ void lolwut6Command(client *c);
  * This is what unstable versions of Redis will display. */
 void lolwutUnstableCommand(client *c) {
     sds rendered = sdsnew("Redis ver. ");
-    rendered = sdscat(rendered,REDIS_VERSION);
+    rendered = sdscat(rendered,SERVER_VERSION);
     rendered = sdscatlen(rendered,"\n",1);
     addReplyVerbatim(c,rendered,sdslen(rendered),"txt");
     sdsfree(rendered);
@@ -52,7 +52,7 @@ void lolwutUnstableCommand(client *c) {
 
 /* LOLWUT [VERSION <version>] [... version specific arguments ...] */
 void lolwutCommand(client *c) {
-    char *v = REDIS_VERSION;
+    char *v = SERVER_VERSION;
     char verstr[64];
 
     if (c->argc >= 3 && !strcasecmp(c->argv[1]->ptr,"version")) {

src/lolwut5.c

@@ -169,7 +169,7 @@ void lolwut5Command(client *c) {
     sds rendered = renderCanvas(canvas);
     rendered = sdscat(rendered,
         "\nGeorg Nees - schotter, plotter on paper, 1968. Redis ver. ");
-    rendered = sdscat(rendered,REDIS_VERSION);
+    rendered = sdscat(rendered,SERVER_VERSION);
     rendered = sdscatlen(rendered,"\n",1);
     addReplyVerbatim(c,rendered,sdslen(rendered),"txt");
     sdsfree(rendered);

src/lolwut6.c

@@ -193,7 +193,7 @@ void lolwut6Command(client *c) {
     rendered = sdscat(rendered,
         "\nDedicated to the 8 bit game developers of past and present.\n"
         "Original 8 bit image from Plaguemon by hikikomori. Redis ver. ");
-    rendered = sdscat(rendered,REDIS_VERSION);
+    rendered = sdscat(rendered,SERVER_VERSION);
     rendered = sdscatlen(rendered,"\n",1);
     addReplyVerbatim(c,rendered,sdslen(rendered),"txt");
     sdsfree(rendered);

src/mkreleasehdr.sh

@@ -12,5 +12,5 @@ echo "#define REDIS_GIT_SHA1 \"$GIT_SHA1\"" > release.h
 echo "#define REDIS_GIT_DIRTY \"$GIT_DIRTY\"" >> release.h
 echo "#define REDIS_BUILD_ID \"$BUILD_ID\"" >> release.h
 echo "#include \"version.h\"" >> release.h
-echo "#define REDIS_BUILD_ID_RAW REDIS_VERSION REDIS_BUILD_ID REDIS_GIT_DIRTY REDIS_GIT_SHA1" >> release.h
+echo "#define REDIS_BUILD_ID_RAW SERVER_NAME SERVER_VERSION REDIS_BUILD_ID REDIS_GIT_DIRTY REDIS_GIT_SHA1" >> release.h
 touch release.c # Force recompile of release.c

src/module.c

@@ -13295,7 +13295,7 @@ int RM_GetKeyspaceNotificationFlagsAll(void) {
  * Example for 6.0.7 the return value will be 0x00060007.
  */
 int RM_GetServerVersion(void) {
-    return REDIS_VERSION_NUM;
+    return SERVER_VERSION_NUM;
 }
 
 /**

src/networking.c

@@ -3650,7 +3650,7 @@ void helloCommand(client *c) {
     addReplyBulkCString(c,"redis");
 
     addReplyBulkCString(c,"version");
-    addReplyBulkCString(c,REDIS_VERSION);
+    addReplyBulkCString(c,SERVER_VERSION);
 
     addReplyBulkCString(c,"proto");
     addReplyLongLong(c,c->resp);

src/rdb.c

@@ -1195,6 +1195,8 @@ int rdbSaveInfoAuxFields(rio *rdb, int rdbflags, rdbSaveInfo *rsi) {
     int aof_base = (rdbflags & RDBFLAGS_AOF_PREAMBLE) != 0;
 
     /* Add a few fields about the state when the RDB was created. */
+    if (rdbSaveAuxFieldStrStr(rdb,"server-ver",SERVER_VERSION) == -1) return -1;
+    /* Print Redis version for backwards compatibility with redis. */
     if (rdbSaveAuxFieldStrStr(rdb,"redis-ver",REDIS_VERSION) == -1) return -1;
     if (rdbSaveAuxFieldStrInt(rdb,"redis-bits",redis_bits) == -1) return -1;
     if (rdbSaveAuxFieldStrInt(rdb,"ctime",time(NULL)) == -1) return -1;
@@ -3162,7 +3164,10 @@ int rdbLoadRioWithLoadingCtx(rio *rdb, int rdbflags, rdbSaveInfo *rsi, rdbLoadin
             } else if (!strcasecmp(auxkey->ptr,"lua")) {
                 /* Won't load the script back in memory anymore. */
             } else if (!strcasecmp(auxkey->ptr,"redis-ver")) {
-                serverLog(LL_NOTICE,"Loading RDB produced by version %s",
+                serverLog(LL_NOTICE,"Loading RDB produced by Redis version %s",
+                    (char*)auxval->ptr);
+            } else if (!strcasecmp(auxkey->ptr,"server-ver")) {
+                serverLog(LL_NOTICE,"Loading RDB produced by server version %s",
                     (char*)auxval->ptr);
             } else if (!strcasecmp(auxkey->ptr,"ctime")) {
                 time_t age = time(NULL)-strtol(auxval->ptr,NULL,10);

src/script_lua.c

@@ -1383,6 +1383,7 @@ void luaSetTableProtectionRecursively(lua_State *lua) {
 }
 
 void luaRegisterVersion(lua_State* lua) {
+    /* For legacy compatibility reasons include Redis versions. */
     lua_pushstring(lua,"REDIS_VERSION_NUM");
     lua_pushnumber(lua,REDIS_VERSION_NUM);
     lua_settable(lua,-3);
@@ -1390,6 +1391,19 @@ void luaRegisterVersion(lua_State* lua) {
     lua_pushstring(lua,"REDIS_VERSION");
     lua_pushstring(lua,REDIS_VERSION);
     lua_settable(lua,-3);
+
+    /* Now push the Valkey version information. */
+    lua_pushstring(lua,"SERVER_VERSION_NUM");
+    lua_pushnumber(lua,SERVER_VERSION_NUM);
+    lua_settable(lua,-3);
+
+    lua_pushstring(lua,"SERVER_VERSION");
+    lua_pushstring(lua,SERVER_VERSION);
+    lua_settable(lua,-3);
+
+    lua_pushstring(lua,"SERVER_NAME");
+    lua_pushstring(lua,SERVER_NAME);
+    lua_settable(lua,-3);
 }
 
 void luaRegisterLogFunction(lua_State* lua) {

src/sentinel.c

@@ -1846,8 +1846,7 @@ void loadSentinelConfigFromQueue(void) {
     return;
 
 loaderr:
-    fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR (Redis %s) ***\n",
-        REDIS_VERSION);
+    fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR (Version %s) ***\n", SERVER_VERSION);
     fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
     fprintf(stderr, ">>> '%s'\n", line);
     fprintf(stderr, "%s\n", err);

src/server.c

@@ -5585,6 +5585,8 @@ sds genRedisInfoString(dict *section_dict, int all_sections, int everything) {
 
         info = sdscatfmt(info, "# Server\r\n" FMTARGS(
             "redis_version:%s\r\n", REDIS_VERSION,
+            "server_name:%s\r\n", SERVER_NAME,
+            "server_version:%s\r\n", SERVER_VERSION,
             "redis_git_sha1:%s\r\n", serverGitSHA1(),
             "redis_git_dirty:%i\r\n", strtol(serverGitDirty(),NULL,10) > 0,
             "redis_build_id:%s\r\n", serverBuildIdString(),
@@ -6265,7 +6267,7 @@ void daemonize(void) {
 sds getVersion(void) {
     sds version = sdscatprintf(sdsempty(),
         "v=%s sha=%s:%d malloc=%s bits=%d build=%llx",
-        REDIS_VERSION,
+        SERVER_VERSION,
         serverGitSHA1(),
         atoi(serverGitDirty()) > 0,
         ZMALLOC_LIB,
@@ -6319,7 +6321,7 @@ void redisAsciiArt(void) {
         );
     } else {
         snprintf(buf,1024*16,ascii_logo,
-            REDIS_VERSION,
+            SERVER_VERSION,
             serverGitSHA1(),
             strtol(serverGitDirty(),NULL,10) > 0,
             (sizeof(long) == 8) ? "64" : "32",
@@ -7153,9 +7155,8 @@ int main(int argc, char **argv) {
     if (background) daemonize();
 
     serverLog(LL_NOTICE, "oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo");
-    serverLog(LL_NOTICE,
-        "Redis version=%s, bits=%d, commit=%s, modified=%d, pid=%d, just started",
-            REDIS_VERSION,
+    serverLog(LL_NOTICE, SERVER_NAME " version=%s, bits=%d, commit=%s, modified=%d, pid=%d, just started",
+            SERVER_VERSION,
             (sizeof(long) == 8) ? 64 : 32,
             serverGitSHA1(),
             strtol(serverGitDirty(),NULL,10) > 0,

src/version.h

@@ -1,2 +1,8 @@
-#define REDIS_VERSION "255.255.255"
-#define REDIS_VERSION_NUM 0x00ffffff
+#define SERVER_NAME "valkey"
+#define SERVER_VERSION "255.255.255"
+#define SERVER_VERSION_NUM 0x00ffffff
+
+/* Redis compatibility version, should never
+ * exceed 7.2.x. */
+#define REDIS_VERSION "7.2.4"
+#define REDIS_VERSION_NUM 0x00070204

tests/unit/moduleapi/misc.tcl

@@ -21,8 +21,7 @@ start_server {overrides {save {900 1}} tags {"modules"}} {
     }
 
     test {test redis version} {
-        set version [s redis_version]
-        assert_equal $version [r test.redisversion]
+        assert_equal [s server_version] [r test.redisversion]
     }
 
     test {test long double conversions} {