Move code for pushing on a (blocking) RPOPLPUSH

[redis.git] / src / redis.c

diff --git a/src/redis.c b/src/redis.c
index 8519f46fffd50134b30013233a2b636d9f2db1ff..8a5f9632aec78a083748db6227d5dbc45494d6d6 100644 (file)
--- a/src/redis.c
+++ b/src/redis.c
@@ -89,6 +89,7 @@ struct redisCommand readonlyCommandTable[] = {
     {"rpop",rpopCommand,2,0,NULL,1,1,1},
     {"lpop",lpopCommand,2,0,NULL,1,1,1},
     {"brpop",brpopCommand,-3,0,NULL,1,1,1},
+    {"brpoplpush",brpoplpushCommand,4,REDIS_CMD_DENYOOM,NULL,1,2,1},
     {"blpop",blpopCommand,-3,0,NULL,1,1,1},
     {"llen",llenCommand,2,0,NULL,1,1,1},
     {"lindex",lindexCommand,3,0,NULL,1,1,1},
@@ -96,7 +97,7 @@ struct redisCommand readonlyCommandTable[] = {
     {"lrange",lrangeCommand,4,0,NULL,1,1,1},
     {"ltrim",ltrimCommand,4,0,NULL,1,1,1},
     {"lrem",lremCommand,4,0,NULL,1,1,1},
-    {"rpoplpush",rpoplpushcommand,3,REDIS_CMD_DENYOOM,NULL,1,2,1},
+    {"rpoplpush",rpoplpushCommand,3,REDIS_CMD_DENYOOM,NULL,1,2,1},
     {"sadd",saddCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1},
     {"srem",sremCommand,3,0,NULL,1,1,1},
     {"smove",smoveCommand,4,0,NULL,1,2,1},
@@ -124,7 +125,7 @@ struct redisCommand readonlyCommandTable[] = {
     {"zcount",zcountCommand,4,0,NULL,1,1,1},
     {"zrevrange",zrevrangeCommand,-4,0,NULL,1,1,1},
     {"zcard",zcardCommand,2,0,NULL,1,1,1},
-    {"zscore",zscoreCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1},
+    {"zscore",zscoreCommand,3,0,NULL,1,1,1},
     {"zrank",zrankCommand,3,0,NULL,1,1,1},
     {"zrevrank",zrevrankCommand,3,0,NULL,1,1,1},
     {"hset",hsetCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1},
@@ -572,7 +573,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
     }
 
     /* Close connections of timedout clients */
-    if ((server.maxidletime && !(loops % 100)) || server.blpop_blocked_clients)
+    if ((server.maxidletime && !(loops % 100)) || server.bpop_blocked_clients)
         closeTimedoutClients();
 
     /* Check if a background saving or AOF rewrite in progress terminated */
@@ -702,6 +703,8 @@ void createSharedObjects(void) {
         "-ERR source and destination objects are the same\r\n"));
     shared.outofrangeerr = createObject(REDIS_STRING,sdsnew(
         "-ERR index out of range\r\n"));
+    shared.loadingerr = createObject(REDIS_STRING,sdsnew(
+        "-LOADING Redis is loading the dataset in memory\r\n"));
     shared.space = createObject(REDIS_STRING,sdsnew(" "));
     shared.colon = createObject(REDIS_STRING,sdsnew(":"));
     shared.plus = createObject(REDIS_STRING,sdsnew("+"));
@@ -739,6 +742,7 @@ void initServerConfig() {
     server.verbosity = REDIS_VERBOSE;
     server.maxidletime = REDIS_MAXIDLETIME;
     server.saveparams = NULL;
+    server.loading = 0;
     server.logfile = NULL; /* NULL = log on standard output */
     server.glueoutputbuf = 1;
     server.daemonize = 0;
@@ -755,7 +759,7 @@ void initServerConfig() {
     server.rdbcompression = 1;
     server.activerehashing = 1;
     server.maxclients = 0;
-    server.blpop_blocked_clients = 0;
+    server.bpop_blocked_clients = 0;
     server.maxmemory = 0;
     server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
     server.maxmemory_samples = 3;
@@ -811,11 +815,6 @@ void initServer() {
     setupSigSegvAction();
 
     server.mainthread = pthread_self();
-    server.devnull = fopen("/dev/null","w");
-    if (server.devnull == NULL) {
-        redisLog(REDIS_WARNING, "Can't open /dev/null: %s", server.neterr);
-        exit(1);
-    }
     server.clients = listCreate();
     server.slaves = listCreate();
     server.monitors = listCreate();
@@ -1006,6 +1005,12 @@ int processCommand(redisClient *c) {
         return REDIS_OK;
     }
 
+    /* Loading DB? Return an error if the command is not INFO */
+    if (server.loading && cmd->proc != infoCommand) {
+        addReply(c, shared.loadingerr);
+        return REDIS_OK;
+    }
+
     /* Exec the command */
     if (c->flags & REDIS_MULTI &&
         cmd->proc != execCommand && cmd->proc != discardCommand &&
@@ -1133,6 +1138,8 @@ sds genRedisInfoString(void) {
         "used_memory_rss:%zu\r\n"
         "mem_fragmentation_ratio:%.2f\r\n"
         "use_tcmalloc:%d\r\n"
+        "loading:%d\r\n"
+        "aof_enabled:%d\r\n"
         "changes_since_last_save:%lld\r\n"
         "bgsave_in_progress:%d\r\n"
         "last_save_time:%ld\r\n"
@@ -1163,7 +1170,7 @@ sds genRedisInfoString(void) {
         (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000,
         listLength(server.clients)-listLength(server.slaves),
         listLength(server.slaves),
-        server.blpop_blocked_clients,
+        server.bpop_blocked_clients,
         zmalloc_used_memory(),
         hmem,
         zmalloc_get_rss(),
@@ -1173,6 +1180,8 @@ sds genRedisInfoString(void) {
 #else
         0,
 #endif
+        server.loading,
+        server.appendonly,
         server.dirty,
         server.bgsavechildpid != -1,
         server.lastsave,
@@ -1243,6 +1252,35 @@ sds genRedisInfoString(void) {
         );
         unlockThreadedIO();
     }
+    if (server.loading) {
+        double perc;
+        time_t eta, elapsed;
+        off_t remaining_bytes = server.loading_total_bytes-
+                                server.loading_loaded_bytes;
+
+        perc = ((double)server.loading_loaded_bytes /
+               server.loading_total_bytes) * 100;
+
+        elapsed = time(NULL)-server.loading_start_time;
+        if (elapsed == 0) {
+            eta = 1; /* A fake 1 second figure if we don't have enough info */
+        } else {
+            eta = (elapsed*remaining_bytes)/server.loading_loaded_bytes;
+        }
+
+        info = sdscatprintf(info,
+            "loading_start_time:%ld\r\n"
+            "loading_total_bytes:%llu\r\n"
+            "loading_loaded_bytes:%llu\r\n"
+            "loading_loaded_perc:%.2f\r\n"
+            "loading_eta_seconds:%ld\r\n"
+            ,(unsigned long) server.loading_start_time,
+            (unsigned long long) server.loading_total_bytes,
+            (unsigned long long) server.loading_loaded_bytes,
+            perc,
+            eta
+        );
+    }
     for (j = 0; j < server.dbnum; j++) {
         long long keys, vkeys;
 
@@ -1290,6 +1328,8 @@ void monitorCommand(redisClient *c) {
 void freeMemoryIfNeeded(void) {
     /* Remove keys accordingly to the active policy as long as we are
      * over the memory limit. */
+    if (server.maxmemory_policy == REDIS_MAXMEMORY_NO_EVICTION) return;
+
     while (server.maxmemory && zmalloc_used_memory() > server.maxmemory) {
         int j, k, freed = 0;
 
@@ -1328,6 +1368,10 @@ void freeMemoryIfNeeded(void) {
 
                     de = dictGetRandomKey(dict);
                     thiskey = dictGetEntryKey(de);
+                    /* When policy is volatile-lru we need an additonal 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);
                     o = dictGetEntryVal(de);
                     thisval = estimateObjectIdleTime(o);