Redis 2.6.4

[redis.git] / src / redis.c

diff --git a/src/redis.c b/src/redis.c
index 8dc0e0ebb1c41987a965ad9912f291b1276a78c8..9cdca553db63fb436084648eb45d3b02eeab68a9 100644 (file)
--- a/src/redis.c
+++ b/src/redis.c
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
+ * 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
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without


@@ -110,6 +110,7 @@ struct redisCommand *commandTable;
  * t: Allow command while a slave has stale data but is not allowed to
  *    server this data. Normally no command is accepted in this condition
  *    but just a few.
  * t: Allow command while a slave has stale data but is not allowed to
  *    server this data. Normally no command is accepted in this condition
  *    but just a few.

+ * M: Do not automatically propagate the command on MONITOR.

  */
 struct redisCommand redisCommandTable[] = {
     {"get",getCommand,2,"r",0,NULL,1,1,1,0,0},
  */
 struct redisCommand redisCommandTable[] = {
     {"get",getCommand,2,"r",0,NULL,1,1,1,0,0},


@@ -216,7 +217,7 @@ struct redisCommand redisCommandTable[] = {
     {"lastsave",lastsaveCommand,1,"r",0,NULL,0,0,0,0,0},
     {"type",typeCommand,2,"r",0,NULL,1,1,1,0,0},
     {"multi",multiCommand,1,"rs",0,NULL,0,0,0,0,0},
     {"lastsave",lastsaveCommand,1,"r",0,NULL,0,0,0,0,0},
     {"type",typeCommand,2,"r",0,NULL,1,1,1,0,0},
     {"multi",multiCommand,1,"rs",0,NULL,0,0,0,0,0},

-    {"exec",execCommand,1,"s",0,NULL,0,0,0,0,0},
+    {"exec",execCommand,1,"sM",0,NULL,0,0,0,0,0},

     {"discard",discardCommand,1,"rs",0,NULL,0,0,0,0,0},
     {"sync",syncCommand,1,"ars",0,NULL,0,0,0,0,0},
     {"replconf",replconfCommand,-1,"ars",0,NULL,0,0,0,0,0},
     {"discard",discardCommand,1,"rs",0,NULL,0,0,0,0,0},
     {"sync",syncCommand,1,"ars",0,NULL,0,0,0,0,0},
     {"replconf",replconfCommand,-1,"ars",0,NULL,0,0,0,0,0},


@@ -901,8 +902,12 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 
             if (pid == server.rdb_child_pid) {
                 backgroundSaveDoneHandler(exitcode,bysignal);
 
             if (pid == server.rdb_child_pid) {
                 backgroundSaveDoneHandler(exitcode,bysignal);

-            } else {
+            } else if (pid == server.aof_child_pid) {

                 backgroundRewriteDoneHandler(exitcode,bysignal);
                 backgroundRewriteDoneHandler(exitcode,bysignal);

+            } else {
+                redisLog(REDIS_WARNING,
+                    "Warning, detected child with unmatched pid: %ld",
+                    (long)pid);

             }
             updateDictResizePolicy();
         }
             }
             updateDictResizePolicy();
         }


@@ -1328,11 +1333,11 @@ void initServer() {
 
     /* 32 bit instances are limited to 4GB of address space, so if there is
      * no explicit limit in the user provided configuration we set a limit
 
     /* 32 bit instances are limited to 4GB of address space, so if there is
      * no explicit limit in the user provided configuration we set a limit

-     * at 3.5GB using maxmemory with 'noeviction' policy'. This saves
-     * useless crashes of the Redis instance. */
+     * at 3 GB using maxmemory with 'noeviction' policy'. This avoids
+     * useless crashes of the Redis instance for out of memory. */

     if (server.arch_bits == 32 && server.maxmemory == 0) {
     if (server.arch_bits == 32 && server.maxmemory == 0) {

-        redisLog(REDIS_WARNING,"Warning: 32 bit instance detected but no memory limit set. Setting 3.5 GB maxmemory limit with 'noeviction' policy now.");
-        server.maxmemory = 3584LL*(1024*1024); /* 3584 MB = 3.5 GB */
+        redisLog(REDIS_WARNING,"Warning: 32 bit instance detected but no memory limit set. Setting 3 GB maxmemory limit with 'noeviction' policy now.");
+        server.maxmemory = 3072LL*(1024*1024); /* 3 GB */

         server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
     }
 
         server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
     }
 


@@ -1365,6 +1370,7 @@ void populateCommandTable(void) {
             case 'S': c->flags |= REDIS_CMD_SORT_FOR_SCRIPT; break;
             case 'l': c->flags |= REDIS_CMD_LOADING; break;
             case 't': c->flags |= REDIS_CMD_STALE; break;
             case 'S': c->flags |= REDIS_CMD_SORT_FOR_SCRIPT; break;
             case 'l': c->flags |= REDIS_CMD_LOADING; break;
             case 't': c->flags |= REDIS_CMD_STALE; break;

+            case 'M': c->flags |= REDIS_CMD_SKIP_MONITOR; break;

             default: redisPanic("Unsupported command flag"); break;
             }
             f++;
             default: redisPanic("Unsupported command flag"); break;
             }
             f++;


@@ -1440,7 +1446,7 @@ struct redisCommand *lookupCommandByCString(char *s) {
 }
 
 /* Propagate the specified command (in the context of the specified database id)
 }
 
 /* Propagate the specified command (in the context of the specified database id)

- * to AOF, Slaves and Monitors.
+ * to AOF and Slaves.

  *
  * flags are an xor between:
  * + REDIS_PROPAGATE_NONE (no propagation of command at all)
  *
  * flags are an xor between:
  * + REDIS_PROPAGATE_NONE (no propagation of command at all)


@@ -1470,8 +1476,12 @@ void call(redisClient *c, int flags) {
 
     /* Sent the command to clients in MONITOR mode, only if the commands are
      * not geneated from reading an AOF. */
 
     /* Sent the command to clients in MONITOR mode, only if the commands are
      * not geneated from reading an AOF. */

-    if (listLength(server.monitors) && !server.loading)
+    if (listLength(server.monitors) &&
+        !server.loading &&
+        !(c->cmd->flags & REDIS_CMD_SKIP_MONITOR))
+    {

         replicationFeedMonitors(c,server.monitors,c->db->id,c->argv,c->argc);
         replicationFeedMonitors(c,server.monitors,c->db->id,c->argv,c->argc);

+    }

 
     /* Call the command. */
     redisOpArrayInit(&server.also_propagate);
 
     /* Call the command. */
     redisOpArrayInit(&server.also_propagate);


@@ -1521,7 +1531,7 @@ void call(redisClient *c, int flags) {
 }
 
 /* If this function gets called we already read a whole
 }
 
 /* If this function gets called we already read a whole

- * command, argments are in the client argv/argc fields.
+ * command, arguments are in the client argv/argc fields.

  * processCommand() execute the command or prepare the
  * server for a bulk read from the client.
  *
  * processCommand() execute the command or prepare the
  * server for a bulk read from the client.
  *


@@ -1623,6 +1633,7 @@ int processCommand(redisClient *c) {
 
     /* Lua script too slow? Only allow commands with REDIS_CMD_STALE flag. */
     if (server.lua_timedout &&
 
     /* Lua script too slow? Only allow commands with REDIS_CMD_STALE flag. */
     if (server.lua_timedout &&

+          c->cmd->proc != authCommand &&

         !(c->cmd->proc == shutdownCommand &&
           c->argc == 2 &&
           tolower(((char*)c->argv[1]->ptr)[0]) == 'n') &&
         !(c->cmd->proc == shutdownCommand &&
           c->argc == 2 &&
           tolower(((char*)c->argv[1]->ptr)[0]) == 'n') &&


@@ -1812,7 +1823,7 @@ sds genRedisInfoString(char *section) {
     unsigned long lol, bib;
     int allsections = 0, defsections = 0;
     int sections = 0;
     unsigned long lol, bib;
     int allsections = 0, defsections = 0;
     int sections = 0;

-    
+

     if (section) {
         allsections = strcasecmp(section,"all") == 0;
         defsections = strcasecmp(section,"default") == 0;
     if (section) {
         allsections = strcasecmp(section,"all") == 0;
         defsections = strcasecmp(section,"default") == 0;


@@ -1825,7 +1836,11 @@ sds genRedisInfoString(char *section) {
     /* Server */
     if (allsections || defsections || !strcasecmp(section,"server")) {
         struct utsname name;
     /* Server */
     if (allsections || defsections || !strcasecmp(section,"server")) {
         struct utsname name;

+        char *mode;

 
 

+        if (server.sentinel_mode) mode = "sentinel";
+        else mode = "standalone";
+    

         if (sections++) info = sdscat(info,"\r\n");
         uname(&name);
         info = sdscatprintf(info,
         if (sections++) info = sdscat(info,"\r\n");
         uname(&name);
         info = sdscatprintf(info,


@@ -1833,6 +1848,7 @@ sds genRedisInfoString(char *section) {
             "redis_version:%s\r\n"
             "redis_git_sha1:%s\r\n"
             "redis_git_dirty:%d\r\n"
             "redis_version:%s\r\n"
             "redis_git_sha1:%s\r\n"
             "redis_git_dirty:%d\r\n"

+            "redis_mode:%s\r\n"

             "os:%s %s %s\r\n"
             "arch_bits:%d\r\n"
             "multiplexing_api:%s\r\n"
             "os:%s %s %s\r\n"
             "arch_bits:%d\r\n"
             "multiplexing_api:%s\r\n"


@@ -1846,6 +1862,7 @@ sds genRedisInfoString(char *section) {
             REDIS_VERSION,
             redisGitSHA1(),
             strtol(redisGitDirty(),NULL,10) > 0,
             REDIS_VERSION,
             redisGitSHA1(),
             strtol(redisGitDirty(),NULL,10) > 0,

+            mode,

             name.sysname, name.release, name.machine,
             server.arch_bits,
             aeGetApiName(),
             name.sysname, name.release, name.machine,
             server.arch_bits,
             aeGetApiName(),


@@ -2057,7 +2074,10 @@ sds genRedisInfoString(char *section) {
                     (long)server.unixtime-server.repl_down_since);
             }
             info = sdscatprintf(info,
                     (long)server.unixtime-server.repl_down_since);
             }
             info = sdscatprintf(info,

-                "slave_priority:%d\r\n", server.slave_priority);
+                "slave_priority:%d\r\n"
+                "slave_read_only:%d\r\n",
+                server.slave_priority,
+                server.repl_slave_ro);

         }
         info = sdscatprintf(info,
             "connected_slaves:%lu\r\n",
         }
         info = sdscatprintf(info,
             "connected_slaves:%lu\r\n",


@@ -2159,7 +2179,7 @@ void infoCommand(redisClient *c) {
 }
 
 void monitorCommand(redisClient *c) {
 }
 
 void monitorCommand(redisClient *c) {

-    /* ignore MONITOR if aleady slave or in monitor mode */
+    /* ignore MONITOR if already slave or in monitor mode */

     if (c->flags & REDIS_SLAVE) return;
 
     c->flags |= (REDIS_SLAVE|REDIS_MONITOR);
     if (c->flags & REDIS_SLAVE) return;
 
     c->flags |= (REDIS_SLAVE|REDIS_MONITOR);


@@ -2258,7 +2278,7 @@ int freeMemoryIfNeeded(void) {
 
                     de = dictGetRandomKey(dict);
                     thiskey = dictGetKey(de);
 
                     de = dictGetRandomKey(dict);
                     thiskey = dictGetKey(de);

-                    /* When policy is volatile-lru we need an additonal lookup
+                    /* When policy is volatile-lru we need an additional lookup

                      * to locate the real key, as dict is set to db->expires. */
                     if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU)
                         de = dictFind(db->dict, thiskey);
                      * to locate the real key, as dict is set to db->expires. */
                     if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU)
                         de = dictFind(db->dict, thiskey);


@@ -2408,20 +2428,14 @@ void redisAsciiArt(void) {
     char *buf = zmalloc(1024*16);
     char *mode = "stand alone";
 
     char *buf = zmalloc(1024*16);
     char *mode = "stand alone";
 

-    if (server.cluster_enabled) mode = "cluster";
-    else if (server.sentinel_mode) mode = "sentinel";
+    if (server.sentinel_mode) mode = "sentinel";

 
     snprintf(buf,1024*16,ascii_logo,
         REDIS_VERSION,
         redisGitSHA1(),
         strtol(redisGitDirty(),NULL,10) > 0,
         (sizeof(long) == 8) ? "64" : "32",
 
     snprintf(buf,1024*16,ascii_logo,
         REDIS_VERSION,
         redisGitSHA1(),
         strtol(redisGitDirty(),NULL,10) > 0,
         (sizeof(long) == 8) ? "64" : "32",

-<<<<<<< HEAD
-        "stand alone",
-        server.port,
-=======

         mode, server.port,
         mode, server.port,

->>>>>>> 6b5daa2... First implementation of Redis Sentinel.

         (long) getpid()
     );
     redisLogRaw(REDIS_NOTICE|REDIS_LOG_RAW,buf);
         (long) getpid()
     );
     redisLogRaw(REDIS_NOTICE|REDIS_LOG_RAW,buf);


@@ -2459,12 +2473,6 @@ void setupSignalHandlers(void) {
 
 void memtest(size_t megabytes, int passes);
 
 
 void memtest(size_t megabytes, int passes);
 

-<<<<<<< HEAD
-void redisOutOfMemoryHandler(size_t allocation_size) {
-    redisLog(REDIS_WARNING,"Out Of Memory allocating %zu bytes!",
-        allocation_size);
-    redisPanic("OOM");
-=======

 /* Returns 1 if there is --sentinel among the arguments or if
  * argv[0] is exactly "redis-sentinel". */
 int checkForSentinelMode(int argc, char **argv) {
 /* Returns 1 if there is --sentinel among the arguments or if
  * argv[0] is exactly "redis-sentinel". */
 int checkForSentinelMode(int argc, char **argv) {


@@ -2491,7 +2499,12 @@ void loadDataFromDisk(void) {
             exit(1);
         }
     }
             exit(1);
         }
     }

->>>>>>> 6b5daa2... First implementation of Redis Sentinel.
+}
+
+void redisOutOfMemoryHandler(size_t allocation_size) {
+    redisLog(REDIS_WARNING,"Out Of Memory allocating %zu bytes!",
+        allocation_size);
+    redisPanic("OOM");

 }
 
 int main(int argc, char **argv) {
 }
 
 int main(int argc, char **argv) {


@@ -2559,7 +2572,7 @@ int main(int argc, char **argv) {
         loadServerConfig(configfile,options);
         sdsfree(options);
     } else {
         loadServerConfig(configfile,options);
         sdsfree(options);
     } else {

-        redisLog(REDIS_WARNING,"Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf'");
+        redisLog(REDIS_WARNING, "Warning: no config file specified, using the default config. In order to specify a config file use %s /path/to/%s.conf", argv[0], server.sentinel_mode ? "sentinel" : "redis");

     }
     if (server.daemonize) daemonize();
     initServer();
     }
     if (server.daemonize) daemonize();
     initServer();


@@ -2567,7 +2580,7 @@ int main(int argc, char **argv) {
     redisAsciiArt();
 
     if (!server.sentinel_mode) {
     redisAsciiArt();
 
     if (!server.sentinel_mode) {

-        /* Things only needed when not runnign in Sentinel mode. */
+        /* Things only needed when not running in Sentinel mode. */

         redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION);
     #ifdef __linux__
         linuxOvercommitMemoryWarning();
         redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION);
     #ifdef __linux__
         linuxOvercommitMemoryWarning();


@@ -2579,6 +2592,11 @@ int main(int argc, char **argv) {
             redisLog(REDIS_NOTICE,"The server is now ready to accept connections at %s", server.unixsocket);
     }
 
             redisLog(REDIS_NOTICE,"The server is now ready to accept connections at %s", server.unixsocket);
     }
 

+    /* Warning the user about suspicious maxmemory setting. */
+    if (server.maxmemory > 0 && server.maxmemory < 1024*1024) {
+        redisLog(REDIS_WARNING,"WARNING: You specified a maxmemory value that is less than 1MB (current value is %llu bytes). Are you sure this is what you really want?", server.maxmemory);
+    }
+

     aeSetBeforeSleepProc(server.el,beforeSleep);
     aeMain(server.el);
     aeDeleteEventLoop(server.el);
     aeSetBeforeSleepProc(server.el,beforeSleep);
     aeMain(server.el);
     aeDeleteEventLoop(server.el);