X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/8996bf77204b6084796608ebad3b1688212d8bfc..632da605831a84fe3d6a17b5d3f4ce7114378f77:/src/redis.c diff --git a/src/redis.c b/src/redis.c index a7d8254b..3914003d 100644 --- a/src/redis.c +++ b/src/redis.c @@ -31,11 +31,6 @@ #include "slowlog.h" #include "bio.h" -#ifdef HAVE_BACKTRACE -#include -#include -#endif /* HAVE_BACKTRACE */ - #include #include #include @@ -70,9 +65,31 @@ double R_Zero, R_PosInf, R_NegInf, R_Nan; struct redisServer server; /* server global state */ struct redisCommand *commandTable; -/* Our command table. Command flags are expressed using strings where every - * character represents a flag. Later the populateCommandTable() function will - * take care of populating the real 'flags' field using this characters. +/* Our command table. + * + * Every entry is composed of the following fields: + * + * name: a string representing the command name. + * function: pointer to the C function implementing the command. + * arity: number of arguments, it is possible to use -N to say >= N + * sflags: command flags as string. See below for a table of flags. + * flags: flags as bitmask. Computed by Redis using the 'sflags' field. + * get_keys_proc: an optional function to get key arguments from a command. + * This is only used when the following three fields are not + * enough to specify what arguments are keys. + * first_key_index: first argument that is a key + * last_key_index: last argument that is a key + * key_step: step to get all the keys from first to last argument. For instance + * in MSET the step is two since arguments are key,val,key,val,... + * microseconds: microseconds of total execution time for this command. + * calls: total number of calls of this command. + * + * The flags, microseconds and calls fields are computed by Redis and should + * always be set to zero. + * + * Command flags are expressed using strings where every character represents + * a flag. Later the populateCommandTable() function will take care of + * populating the real 'flags' field using this characters. * * This is the meaning of the flags: * @@ -83,14 +100,15 @@ struct redisCommand *commandTable; * p: Pub/Sub related command. * f: force replication of this command, regarless of server.dirty. * s: command not allowed in scripts. - * r: random command. Command is not deterministic, that is, the same command + * R: random command. Command is not deterministic, that is, the same command * with the same arguments, with the same key space, may have different * results. For instance SPOP and RANDOMKEY are two random commands. */ struct redisCommand redisCommandTable[] = { {"get",getCommand,2,"r",0,NULL,1,1,1,0,0}, {"set",setCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0}, {"setnx",setnxCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0}, - {"setex",setexCommand,4,"wm",0,noPreloadGetKeys,2,2,1,0,0}, + {"setex",setexCommand,4,"wm",0,noPreloadGetKeys,1,1,1,0,0}, + {"psetex",psetexCommand,4,"wm",0,noPreloadGetKeys,1,1,1,0,0}, {"append",appendCommand,3,"wm",0,NULL,1,1,1,0,0}, {"strlen",strlenCommand,2,"r",0,NULL,1,1,1,0,0}, {"del",delCommand,-2,"w",0,noPreloadGetKeys,1,-1,1,0,0}, @@ -110,9 +128,9 @@ struct redisCommand redisCommandTable[] = { {"linsert",linsertCommand,5,"wm",0,NULL,1,1,1,0,0}, {"rpop",rpopCommand,2,"w",0,NULL,1,1,1,0,0}, {"lpop",lpopCommand,2,"w",0,NULL,1,1,1,0,0}, - {"brpop",brpopCommand,-3,"w",0,NULL,1,1,1,0,0}, - {"brpoplpush",brpoplpushCommand,4,"wm",0,NULL,1,2,1,0,0}, - {"blpop",blpopCommand,-3,"w",0,NULL,1,-2,1,0,0}, + {"brpop",brpopCommand,-3,"ws",0,NULL,1,1,1,0,0}, + {"brpoplpush",brpoplpushCommand,4,"wms",0,NULL,1,2,1,0,0}, + {"blpop",blpopCommand,-3,"ws",0,NULL,1,-2,1,0,0}, {"llen",llenCommand,2,"r",0,NULL,1,1,1,0,0}, {"lindex",lindexCommand,3,"r",0,NULL,1,1,1,0,0}, {"lset",lsetCommand,4,"wm",0,NULL,1,1,1,0,0}, @@ -128,11 +146,11 @@ struct redisCommand redisCommandTable[] = { {"spop",spopCommand,2,"wRs",0,NULL,1,1,1,0,0}, {"srandmember",srandmemberCommand,2,"rR",0,NULL,1,1,1,0,0}, {"sinter",sinterCommand,-2,"r",0,NULL,1,-1,1,0,0}, - {"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,2,-1,1,0,0}, + {"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0}, {"sunion",sunionCommand,-2,"r",0,NULL,1,-1,1,0,0}, - {"sunionstore",sunionstoreCommand,-3,"wm",0,NULL,2,-1,1,0,0}, + {"sunionstore",sunionstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0}, {"sdiff",sdiffCommand,-2,"r",0,NULL,1,-1,1,0,0}, - {"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,2,-1,1,0,0}, + {"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0}, {"smembers",sinterCommand,2,"r",0,NULL,1,1,1,0,0}, {"zadd",zaddCommand,-4,"wm",0,NULL,1,1,1,0,0}, {"zincrby",zincrbyCommand,4,"wm",0,NULL,1,1,1,0,0}, @@ -156,6 +174,7 @@ struct redisCommand redisCommandTable[] = { {"hmset",hmsetCommand,-4,"wm",0,NULL,1,1,1,0,0}, {"hmget",hmgetCommand,-3,"r",0,NULL,1,1,1,0,0}, {"hincrby",hincrbyCommand,4,"wm",0,NULL,1,1,1,0,0}, + {"hincrbyfloat",hincrbyfloatCommand,4,"wm",0,NULL,1,1,1,0,0}, {"hdel",hdelCommand,-3,"w",0,NULL,1,1,1,0,0}, {"hlen",hlenCommand,2,"r",0,NULL,1,1,1,0,0}, {"hkeys",hkeysCommand,2,"r",0,NULL,1,1,1,0,0}, @@ -164,6 +183,7 @@ struct redisCommand redisCommandTable[] = { {"hexists",hexistsCommand,3,"r",0,NULL,1,1,1,0,0}, {"incrby",incrbyCommand,3,"wm",0,NULL,1,1,1,0,0}, {"decrby",decrbyCommand,3,"wm",0,NULL,1,1,1,0,0}, + {"incrbyfloat",incrbyfloatCommand,3,"wm",0,NULL,1,1,1,0,0}, {"getset",getsetCommand,3,"wm",0,NULL,1,1,1,0,0}, {"mset",msetCommand,-3,"wm",0,NULL,1,-1,2,0,0}, {"msetnx",msetnxCommand,-3,"wm",0,NULL,1,-1,2,0,0}, @@ -174,15 +194,17 @@ struct redisCommand redisCommandTable[] = { {"renamenx",renamenxCommand,3,"w",0,renameGetKeys,1,2,1,0,0}, {"expire",expireCommand,3,"w",0,NULL,1,1,1,0,0}, {"expireat",expireatCommand,3,"w",0,NULL,1,1,1,0,0}, + {"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0}, + {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0}, {"keys",keysCommand,2,"r",0,NULL,0,0,0,0,0}, {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0}, - {"auth",authCommand,2,"r",0,NULL,0,0,0,0,0}, + {"auth",authCommand,2,"rs",0,NULL,0,0,0,0,0}, {"ping",pingCommand,1,"r",0,NULL,0,0,0,0,0}, {"echo",echoCommand,2,"r",0,NULL,0,0,0,0,0}, - {"save",saveCommand,1,"ar",0,NULL,0,0,0,0,0}, + {"save",saveCommand,1,"ars",0,NULL,0,0,0,0,0}, {"bgsave",bgsaveCommand,1,"ar",0,NULL,0,0,0,0,0}, {"bgrewriteaof",bgrewriteaofCommand,1,"ar",0,NULL,0,0,0,0,0}, - {"shutdown",shutdownCommand,1,"ar",0,NULL,0,0,0,0,0}, + {"shutdown",shutdownCommand,-1,"ar",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}, @@ -195,9 +217,10 @@ struct redisCommand redisCommandTable[] = { {"info",infoCommand,-1,"r",0,NULL,0,0,0,0,0}, {"monitor",monitorCommand,1,"ars",0,NULL,0,0,0,0,0}, {"ttl",ttlCommand,2,"r",0,NULL,1,1,1,0,0}, + {"pttl",pttlCommand,2,"r",0,NULL,1,1,1,0,0}, {"persist",persistCommand,2,"w",0,NULL,1,1,1,0,0}, {"slaveof",slaveofCommand,3,"aws",0,NULL,0,0,0,0,0}, - {"debug",debugCommand,-2,"aw",0,NULL,0,0,0,0,0}, + {"debug",debugCommand,-2,"aws",0,NULL,0,0,0,0,0}, {"config",configCommand,-2,"ar",0,NULL,0,0,0,0,0}, {"subscribe",subscribeCommand,-2,"rps",0,NULL,0,0,0,0,0}, {"unsubscribe",unsubscribeCommand,-1,"rps",0,NULL,0,0,0,0,0}, @@ -210,8 +233,8 @@ struct redisCommand redisCommandTable[] = { {"restore",restoreCommand,4,"awm",0,NULL,1,1,1,0,0}, {"migrate",migrateCommand,6,"aw",0,NULL,0,0,0,0,0}, {"asking",askingCommand,1,"r",0,NULL,0,0,0,0,0}, - {"dump",dumpCommand,2,"ar",0,NULL,0,0,0,0,0}, - {"object",objectCommand,-2,"r",0,NULL,0,0,0,0,0}, + {"dump",dumpCommand,2,"ar",0,NULL,1,1,1,0,0}, + {"object",objectCommand,-2,"r",0,NULL,2,2,2,0,0}, {"client",clientCommand,-2,"ar",0,NULL,0,0,0,0,0}, {"eval",evalCommand,-3,"wms",0,zunionInterGetKeys,0,0,0,0,0}, {"evalsha",evalShaCommand,-3,"wms",0,zunionInterGetKeys,0,0,0,0,0}, @@ -288,6 +311,11 @@ long long ustime(void) { return ust; } +/* Return the UNIX time in milliseconds */ +long long mstime(void) { + return ustime()/1000; +} + /*====================== Hash table type implementation ==================== */ /* This is an hash table type that uses the SDS dynamic strings libary as @@ -530,7 +558,7 @@ void incrementallyRehash(void) { * for dict.c to resize the hash tables accordingly to the fact we have o not * running childs. */ void updateDictResizePolicy(void) { - if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1) + if (server.rdb_child_pid == -1 && server.aof_child_pid == -1) dictEnableResize(); else dictDisableResize(); @@ -553,19 +581,19 @@ void activeExpireCycle(void) { * of the keys were expired. */ do { long num = dictSize(db->expires); - time_t now = time(NULL); + long long now = mstime(); expired = 0; if (num > REDIS_EXPIRELOOKUPS_PER_CRON) num = REDIS_EXPIRELOOKUPS_PER_CRON; while (num--) { dictEntry *de; - time_t t; + long long t; if ((de = dictGetRandomKey(db->expires)) == NULL) break; - t = (time_t) dictGetEntryVal(de); + t = dictGetSignedIntegerVal(de); if (now > t) { - sds key = dictGetEntryKey(de); + sds key = dictGetKey(de); robj *keyobj = createStringObject(key,sdslen(key)); propagateExpire(db,keyobj); @@ -617,7 +645,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { /* We received a SIGTERM, shutting down here in a safe way, as it is * not ok doing so inside the signal handler. */ if (server.shutdown_asap) { - if (prepareForShutdown() == REDIS_OK) exit(0); + if (prepareForShutdown(0) == REDIS_OK) exit(0); redisLog(REDIS_WARNING,"SIGTERM received but errors trying to shut down the server, check the logs for more information"); } @@ -640,7 +668,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { * if we resize the HT while there is the saving child at work actually * a lot of memory movements in the parent will cause a lot of pages * copied. */ - if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1) { + if (server.rdb_child_pid == -1 && server.aof_child_pid == -1) { if (!(loops % 10)) tryResizeHashTables(); if (server.activerehashing) incrementallyRehash(); } @@ -659,14 +687,14 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { /* Start a scheduled AOF rewrite if this was requested by the user while * a BGSAVE was in progress. */ - if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1 && - server.aofrewrite_scheduled) + if (server.rdb_child_pid == -1 && server.aof_child_pid == -1 && + server.aof_rewrite_scheduled) { rewriteAppendOnlyFileBackground(); } /* Check if a background saving or AOF rewrite in progress terminated. */ - if (server.bgsavechildpid != -1 || server.bgrewritechildpid != -1) { + if (server.rdb_child_pid != -1 || server.aof_child_pid != -1) { int statloc; pid_t pid; @@ -676,7 +704,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { if (WIFSIGNALED(statloc)) bysignal = WTERMSIG(statloc); - if (pid == server.bgsavechildpid) { + if (pid == server.rdb_child_pid) { backgroundSaveDoneHandler(exitcode,bysignal); } else { backgroundRewriteDoneHandler(exitcode,bysignal); @@ -695,21 +723,21 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { now-server.lastsave > sp->seconds) { redisLog(REDIS_NOTICE,"%d changes in %d seconds. Saving...", sp->changes, sp->seconds); - rdbSaveBackground(server.dbfilename); + rdbSaveBackground(server.rdb_filename); break; } } /* Trigger an AOF rewrite if needed */ - if (server.bgsavechildpid == -1 && - server.bgrewritechildpid == -1 && - server.auto_aofrewrite_perc && - server.appendonly_current_size > server.auto_aofrewrite_min_size) + if (server.rdb_child_pid == -1 && + server.aof_child_pid == -1 && + server.aof_rewrite_perc && + server.aof_current_size > server.aof_rewrite_min_size) { - long long base = server.auto_aofrewrite_base_size ? - server.auto_aofrewrite_base_size : 1; - long long growth = (server.appendonly_current_size*100/base) - 100; - if (growth >= server.auto_aofrewrite_perc) { + long long base = server.aof_rewrite_base_size ? + server.aof_rewrite_base_size : 1; + long long growth = (server.aof_current_size*100/base) - 100; + if (growth >= server.aof_rewrite_perc) { redisLog(REDIS_NOTICE,"Starting automatic rewriting of AOF on %lld%% growth",growth); rewriteAppendOnlyFileBackground(); } @@ -754,8 +782,11 @@ void beforeSleep(struct aeEventLoop *eventLoop) { c->flags &= ~REDIS_UNBLOCKED; /* Process remaining data in the input buffer. */ - if (c->querybuf && sdslen(c->querybuf) > 0) + if (c->querybuf && sdslen(c->querybuf) > 0) { + server.current_client = c; processInputBuffer(c); + server.current_client = NULL; + } } /* Write the AOF buffer on disk */ @@ -794,7 +825,7 @@ void createSharedObjects(void) { shared.loadingerr = createObject(REDIS_STRING,sdsnew( "-LOADING Redis is loading the dataset in memory\r\n")); shared.slowscripterr = createObject(REDIS_STRING,sdsnew( - "-BUSY Redis is busy running a script. Please wait or stop the server with SHUTDOWN.\r\n")); + "-BUSY Redis is busy running a script. You can only call SCRIPT KILL or SHUTDOWN NOSAVE.\r\n")); shared.space = createObject(REDIS_STRING,sdsnew(" ")); shared.colon = createObject(REDIS_STRING,sdsnew(":")); shared.plus = createObject(REDIS_STRING,sdsnew("+")); @@ -830,8 +861,9 @@ void initServerConfig() { server.ipfd = -1; server.sofd = -1; server.dbnum = REDIS_DEFAULT_DBNUM; - server.verbosity = REDIS_VERBOSE; + server.verbosity = REDIS_NOTICE; server.maxidletime = REDIS_MAXIDLETIME; + server.client_max_querybuf_len = REDIS_MAX_QUERYBUF_LEN; server.saveparams = NULL; server.loading = 0; server.logfile = NULL; /* NULL = log on standard output */ @@ -839,22 +871,22 @@ void initServerConfig() { server.syslog_ident = zstrdup("redis"); server.syslog_facility = LOG_LOCAL0; server.daemonize = 0; - server.appendonly = 0; - server.appendfsync = APPENDFSYNC_EVERYSEC; - server.no_appendfsync_on_rewrite = 0; - server.auto_aofrewrite_perc = REDIS_AUTO_AOFREWRITE_PERC; - server.auto_aofrewrite_min_size = REDIS_AUTO_AOFREWRITE_MIN_SIZE; - server.auto_aofrewrite_base_size = 0; - server.aofrewrite_scheduled = 0; - server.lastfsync = time(NULL); - server.appendfd = -1; - server.appendseldb = -1; /* Make sure the first time will not match */ + server.aof_state = REDIS_AOF_OFF; + server.aof_fsync = AOF_FSYNC_EVERYSEC; + server.aof_no_fsync_on_rewrite = 0; + server.aof_rewrite_perc = REDIS_AOF_REWRITE_PERC; + server.aof_rewrite_min_size = REDIS_AOF_REWRITE_MIN_SIZE; + server.aof_rewrite_base_size = 0; + server.aof_rewrite_scheduled = 0; + server.aof_last_fsync = time(NULL); + server.aof_fd = -1; + server.aof_selected_db = -1; /* Make sure the first time will not match */ server.aof_flush_postponed_start = 0; server.pidfile = zstrdup("/var/run/redis.pid"); - server.dbfilename = zstrdup("dump.rdb"); - server.appendfilename = zstrdup("appendonly.aof"); + server.rdb_filename = zstrdup("dump.rdb"); + server.aof_filename = zstrdup("appendonly.aof"); server.requirepass = NULL; - server.rdbcompression = 1; + server.rdb_compression = 1; server.activerehashing = 1; server.maxclients = REDIS_MAX_CLIENTS; server.bpop_blocked_clients = 0; @@ -869,10 +901,11 @@ void initServerConfig() { server.zset_max_ziplist_entries = REDIS_ZSET_MAX_ZIPLIST_ENTRIES; server.zset_max_ziplist_value = REDIS_ZSET_MAX_ZIPLIST_VALUE; server.shutdown_asap = 0; - server.repl_ping_slave_period = REDIS_REPL_PING_SLAVE_PERIOD; - server.repl_timeout = REDIS_REPL_TIMEOUT; + server.repl_ping_slave_period = REDIS_REPL_PING_SLAVE_PERIOD; + server.repl_timeout = REDIS_REPL_TIMEOUT; server.cluster_enabled = 0; server.cluster.configfile = zstrdup("nodes.conf"); + server.lua_caller = NULL; server.lua_time_limit = REDIS_LUA_TIME_LIMIT; server.lua_client = NULL; server.lua_timedout = 0; @@ -884,12 +917,11 @@ void initServerConfig() { appendServerSaveParams(300,100); /* save after 5 minutes and 100 changes */ appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */ /* Replication related */ - server.isslave = 0; server.masterauth = NULL; server.masterhost = NULL; server.masterport = 6379; server.master = NULL; - server.replstate = REDIS_REPL_NONE; + server.repl_state = REDIS_REPL_NONE; server.repl_syncio_timeout = REDIS_REPL_SYNCIO_TIMEOUT; server.repl_serve_stale_data = 1; server.repl_down_since = -1; @@ -911,6 +943,49 @@ void initServerConfig() { /* Slow log */ server.slowlog_log_slower_than = REDIS_SLOWLOG_LOG_SLOWER_THAN; server.slowlog_max_len = REDIS_SLOWLOG_MAX_LEN; + + /* Assert */ + server.assert_failed = ""; + server.assert_file = ""; + server.assert_line = 0; + server.bug_report_start = 0; +} + +/* This function will try to raise the max number of open files accordingly to + * the configured max number of clients. It will also account for 32 additional + * file descriptors as we need a few more for persistence, listening + * sockets, log files and so forth. + * + * If it will not be possible to set the limit accordingly to the configured + * max number of clients, the function will do the reverse setting + * server.maxclients to the value that we can actually handle. */ +void adjustOpenFilesLimit(void) { + rlim_t maxfiles = server.maxclients+32; + struct rlimit limit; + + if (maxfiles < 1024) maxfiles = 1024; + if (getrlimit(RLIMIT_NOFILE,&limit) == -1) { + redisLog(REDIS_WARNING,"Unable to obtain the current NOFILE limit (%s), assuming 1024 and setting the max clients configuration accordingly.", + strerror(errno)); + server.maxclients = 1024-32; + } else { + rlim_t oldlimit = limit.rlim_cur; + + /* Set the max number of files if the current limit is not enough + * for our needs. */ + if (oldlimit < maxfiles) { + limit.rlim_cur = maxfiles; + limit.rlim_max = maxfiles; + if (setrlimit(RLIMIT_NOFILE,&limit) == -1) { + server.maxclients = oldlimit-32; + redisLog(REDIS_WARNING,"Unable to set the max number of files limit to %d (%s), setting the max clients configuration to %d.", + (int) maxfiles, strerror(errno), (int) server.maxclients); + } else { + redisLog(REDIS_NOTICE,"Max number of open files set to %d", + (int) maxfiles); + } + } + } } void initServer() { @@ -925,13 +1000,15 @@ void initServer() { server.syslog_facility); } + server.current_client = NULL; server.clients = listCreate(); server.slaves = listCreate(); server.monitors = listCreate(); server.unblocked_clients = listCreate(); createSharedObjects(); - server.el = aeCreateEventLoop(); + adjustOpenFilesLimit(); + server.el = aeCreateEventLoop(server.maxclients+1024); server.db = zmalloc(sizeof(redisDb)*server.dbnum); if (server.port != 0) { @@ -966,10 +1043,10 @@ void initServer() { listSetFreeMethod(server.pubsub_patterns,freePubsubPattern); listSetMatchMethod(server.pubsub_patterns,listMatchPubsubPattern); server.cronloops = 0; - server.bgsavechildpid = -1; - server.bgrewritechildpid = -1; - server.bgrewritebuf = sdsempty(); - server.aofbuf = sdsempty(); + server.rdb_child_pid = -1; + server.aof_child_pid = -1; + server.aof_rewrite_buf = sdsempty(); + server.aof_buf = sdsempty(); server.lastsave = time(NULL); server.dirty = 0; server.stat_numcommands = 0; @@ -981,6 +1058,7 @@ void initServer() { server.stat_keyspace_hits = 0; server.stat_peak_memory = 0; server.stat_fork_time = 0; + server.stat_rejected_conn = 0; server.unixtime = time(NULL); aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL); if (server.ipfd > 0 && aeCreateFileEvent(server.el,server.ipfd,AE_READABLE, @@ -988,9 +1066,10 @@ void initServer() { if (server.sofd > 0 && aeCreateFileEvent(server.el,server.sofd,AE_READABLE, acceptUnixHandler,NULL) == AE_ERR) oom("creating file event"); - if (server.appendonly) { - server.appendfd = open(server.appendfilename,O_WRONLY|O_APPEND|O_CREAT,0644); - if (server.appendfd == -1) { + if (server.aof_state == REDIS_AOF_ON) { + server.aof_fd = open(server.aof_filename, + O_WRONLY|O_APPEND|O_CREAT,0644); + if (server.aof_fd == -1) { redisLog(REDIS_WARNING, "Can't open the append-only file: %s", strerror(errno)); exit(1); @@ -1003,38 +1082,6 @@ void initServer() { bioInit(); srand(time(NULL)^getpid()); - /* Try to raise the max number of open files accordingly to the - * configured max number of clients. Also account for 32 additional - * file descriptors as we need a few more for persistence, listening - * sockets, log files and so forth. */ - { - rlim_t maxfiles = server.maxclients+32; - struct rlimit limit; - - if (maxfiles < 1024) maxfiles = 1024; - if (getrlimit(RLIMIT_NOFILE,&limit) == -1) { - redisLog(REDIS_WARNING,"Unable to obtain the current NOFILE limit (%s), assuming 1024 and setting the max clients configuration accordingly.", - strerror(errno)); - server.maxclients = 1024-32; - } else { - rlim_t oldlimit = limit.rlim_cur; - - /* Set the max number of files if the current limit is not enough - * for our needs. */ - if (oldlimit < maxfiles) { - limit.rlim_cur = maxfiles; - limit.rlim_max = maxfiles; - if (setrlimit(RLIMIT_NOFILE,&limit) == -1) { - server.maxclients = oldlimit-32; - redisLog(REDIS_WARNING,"Unable to set the max number of files limit to %d (%s), setting the max clients configuration to %d.", - (int) maxfiles, strerror(errno), (int) server.maxclients); - } else { - redisLog(REDIS_NOTICE,"Max number of open files set to %d", - (int) maxfiles); - } - } - } - } } /* Populates the Redis Command Table starting from the hard coded list @@ -1107,7 +1154,7 @@ void call(redisClient *c) { slowlogPushEntryIfNeeded(c->argv,c->argc,duration); c->cmd->calls++; - if (server.appendonly && dirty > 0) + if (server.aof_state != REDIS_AOF_OFF && dirty > 0) feedAppendOnlyFile(c->cmd,c->db->id,c->argv,c->argc); if ((dirty > 0 || c->cmd->flags & REDIS_CMD_FORCE_REPLICATION) && listLength(server.slaves)) @@ -1138,7 +1185,7 @@ int processCommand(redisClient *c) { /* Now lookup the command and check ASAP about trivial error conditions * such as wrong arity, bad command name and so forth. */ - c->cmd = lookupCommand(c->argv[0]->ptr); + c->cmd = c->lastcmd = lookupCommand(c->argv[0]->ptr); if (!c->cmd) { addReplyErrorFormat(c,"unknown command '%s'", (char*)c->argv[0]->ptr); @@ -1206,7 +1253,7 @@ int processCommand(redisClient *c) { /* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and * we are a slave with a broken link with master. */ - if (server.masterhost && server.replstate != REDIS_REPL_CONNECTED && + if (server.masterhost && server.repl_state != REDIS_REPL_CONNECTED && server.repl_serve_stale_data == 0 && c->cmd->proc != infoCommand && c->cmd->proc != slaveofCommand) { @@ -1221,8 +1268,15 @@ int processCommand(redisClient *c) { return REDIS_OK; } - /* Lua script too slow? */ - if (server.lua_timedout && c->cmd->proc != shutdownCommand) { + /* Lua script too slow? Only allow SHUTDOWN NOSAVE and SCRIPT KILL. */ + if (server.lua_timedout && + !(c->cmd->proc != shutdownCommand && + c->argc == 2 && + tolower(((char*)c->argv[1]->ptr)[0]) == 'n') && + !(c->cmd->proc == scriptCommand && + c->argc == 2 && + tolower(((char*)c->argv[1]->ptr)[0]) == 'k')) + { addReply(c, shared.slowscripterr); return REDIS_OK; } @@ -1242,32 +1296,35 @@ int processCommand(redisClient *c) { /*================================== Shutdown =============================== */ -int prepareForShutdown() { +int prepareForShutdown(int flags) { + int save = flags & REDIS_SHUTDOWN_SAVE; + int nosave = flags & REDIS_SHUTDOWN_NOSAVE; + redisLog(REDIS_WARNING,"User requested shutdown..."); /* Kill the saving child if there is a background saving in progress. We want to avoid race conditions, for instance our saving child may overwrite the synchronous saving did by SHUTDOWN. */ - if (server.bgsavechildpid != -1) { + if (server.rdb_child_pid != -1) { redisLog(REDIS_WARNING,"There is a child saving an .rdb. Killing it!"); - kill(server.bgsavechildpid,SIGKILL); - rdbRemoveTempFile(server.bgsavechildpid); + kill(server.rdb_child_pid,SIGKILL); + rdbRemoveTempFile(server.rdb_child_pid); } - if (server.appendonly) { + if (server.aof_state != REDIS_AOF_OFF) { /* Kill the AOF saving child as the AOF we already have may be longer * but contains the full dataset anyway. */ - if (server.bgrewritechildpid != -1) { + if (server.aof_child_pid != -1) { redisLog(REDIS_WARNING, "There is a child rewriting the AOF. Killing it!"); - kill(server.bgrewritechildpid,SIGKILL); + kill(server.aof_child_pid,SIGKILL); } /* Append only file: fsync() the AOF and exit */ redisLog(REDIS_NOTICE,"Calling fsync() on the AOF file."); - aof_fsync(server.appendfd); + aof_fsync(server.aof_fd); } - if (server.saveparamslen > 0) { + if ((server.saveparamslen > 0 && !nosave) || save) { redisLog(REDIS_NOTICE,"Saving the final RDB snapshot before exiting."); /* Snapshotting. Perform a SYNC SAVE and exit */ - if (rdbSave(server.dbfilename) != REDIS_OK) { + if (rdbSave(server.rdb_filename) != REDIS_OK) { /* Ooops.. error saving! The best we can do is to continue * operating. Note that if there was a background saving process, * in the next cron() Redis will be notified that the background @@ -1367,6 +1424,7 @@ sds genRedisInfoString(char *section) { "redis_git_dirty:%d\r\n" "arch_bits:%s\r\n" "multiplexing_api:%s\r\n" + "gcc_version:%d.%d.%d\r\n" "process_id:%ld\r\n" "tcp_port:%d\r\n" "uptime_in_seconds:%ld\r\n" @@ -1377,6 +1435,11 @@ sds genRedisInfoString(char *section) { strtol(redisGitDirty(),NULL,10) > 0, (sizeof(long) == 8) ? "64" : "32", aeGetApiName(), +#ifdef __GNUC__ + __GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__, +#else + 0,0,0, +#endif (long) getpid(), server.port, uptime, @@ -1439,20 +1502,24 @@ sds genRedisInfoString(char *section) { "last_save_time:%ld\r\n" "bgrewriteaof_in_progress:%d\r\n", server.loading, - server.appendonly, + server.aof_state != REDIS_AOF_OFF, server.dirty, - server.bgsavechildpid != -1, + server.rdb_child_pid != -1, server.lastsave, - server.bgrewritechildpid != -1); + server.aof_child_pid != -1); - if (server.appendonly) { + if (server.aof_state != REDIS_AOF_OFF) { info = sdscatprintf(info, "aof_current_size:%lld\r\n" "aof_base_size:%lld\r\n" - "aof_pending_rewrite:%d\r\n", - (long long) server.appendonly_current_size, - (long long) server.auto_aofrewrite_base_size, - server.aofrewrite_scheduled); + "aof_pending_rewrite:%d\r\n" + "aof_buffer_length:%zu\r\n" + "aof_pending_bio_fsync:%llu\r\n", + (long long) server.aof_current_size, + (long long) server.aof_rewrite_base_size, + server.aof_rewrite_scheduled, + sdslen(server.aof_buf), + bioPendingJobsOfType(REDIS_BIO_AOF_FSYNC)); } if (server.loading) { @@ -1494,6 +1561,7 @@ sds genRedisInfoString(char *section) { "# Stats\r\n" "total_connections_received:%lld\r\n" "total_commands_processed:%lld\r\n" + "rejected_connections:%lld\r\n" "expired_keys:%lld\r\n" "evicted_keys:%lld\r\n" "keyspace_hits:%lld\r\n" @@ -1503,6 +1571,7 @@ sds genRedisInfoString(char *section) { "latest_fork_usec:%lld\r\n", server.stat_numconnections, server.stat_numcommands, + server.stat_rejected_conn, server.stat_expiredkeys, server.stat_evictedkeys, server.stat_keyspace_hits, @@ -1528,14 +1597,14 @@ sds genRedisInfoString(char *section) { "master_sync_in_progress:%d\r\n" ,server.masterhost, server.masterport, - (server.replstate == REDIS_REPL_CONNECTED) ? + (server.repl_state == REDIS_REPL_CONNECTED) ? "up" : "down", server.master ? ((int)(time(NULL)-server.master->lastinteraction)) : -1, - server.replstate == REDIS_REPL_TRANSFER + server.repl_state == REDIS_REPL_TRANSFER ); - if (server.replstate == REDIS_REPL_TRANSFER) { + if (server.repl_state == REDIS_REPL_TRANSFER) { info = sdscatprintf(info, "master_sync_left_bytes:%ld\r\n" "master_sync_last_io_seconds_ago:%d\r\n" @@ -1544,7 +1613,7 @@ sds genRedisInfoString(char *section) { ); } - if (server.replstate != REDIS_REPL_CONNECTED) { + if (server.repl_state != REDIS_REPL_CONNECTED) { info = sdscatprintf(info, "master_link_down_since_seconds:%ld\r\n", (long)time(NULL)-server.repl_down_since); @@ -1553,6 +1622,37 @@ sds genRedisInfoString(char *section) { info = sdscatprintf(info, "connected_slaves:%d\r\n", listLength(server.slaves)); + if (listLength(server.slaves)) { + int slaveid = 0; + listNode *ln; + listIter li; + + listRewind(server.slaves,&li); + while((ln = listNext(&li))) { + redisClient *slave = listNodeValue(ln); + char *state = NULL; + char ip[32]; + int port; + + if (anetPeerToString(slave->fd,ip,&port) == -1) continue; + switch(slave->replstate) { + case REDIS_REPL_WAIT_BGSAVE_START: + case REDIS_REPL_WAIT_BGSAVE_END: + state = "wait_bgsave"; + break; + case REDIS_REPL_SEND_BULK: + state = "send_bulk"; + break; + case REDIS_REPL_ONLINE: + state = "online"; + break; + } + if (state == NULL) continue; + info = sdscatprintf(info,"slave%d:%s,%d,%s\r\n", + slaveid,ip,port,state); + slaveid++; + } + } } /* CPU */ @@ -1679,7 +1779,7 @@ void freeMemoryIfNeeded(void) { server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_RANDOM) { de = dictGetRandomKey(dict); - bestkey = dictGetEntryKey(de); + bestkey = dictGetKey(de); } /* volatile-lru and allkeys-lru policy */ @@ -1692,12 +1792,12 @@ void freeMemoryIfNeeded(void) { robj *o; de = dictGetRandomKey(dict); - thiskey = dictGetEntryKey(de); + thiskey = dictGetKey(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); + o = dictGetVal(de); thisval = estimateObjectIdleTime(o); /* Higher idle time is better candidate for deletion */ @@ -1715,8 +1815,8 @@ void freeMemoryIfNeeded(void) { long thisval; de = dictGetRandomKey(dict); - thiskey = dictGetEntryKey(de); - thisval = (long) dictGetEntryVal(de); + thiskey = dictGetKey(de); + thisval = (long) dictGetVal(de); /* Expire sooner (minor expire unix timestamp) is better * candidate for deletion */ @@ -1798,8 +1898,16 @@ void version() { } void usage() { - fprintf(stderr,"Usage: ./redis-server [/path/to/redis.conf]\n"); + fprintf(stderr,"Usage: ./redis-server [/path/to/redis.conf] [options]\n"); fprintf(stderr," ./redis-server - (read config from stdin)\n"); + fprintf(stderr," ./redis-server -v or --version\n"); + fprintf(stderr," ./redis-server -h or --help\n\n"); + fprintf(stderr,"Examples:\n"); + fprintf(stderr," ./redis-server (run the server with default conf)\n"); + fprintf(stderr," ./redis-server /etc/redis/6379.conf\n"); + fprintf(stderr," ./redis-server --port 7777\n"); + fprintf(stderr," ./redis-server --port 7777 --slaveof 127.0.0.1 8888\n"); + fprintf(stderr," ./redis-server /etc/myredis.conf --loglevel verbose\n"); exit(1); } @@ -1820,19 +1928,73 @@ void redisAsciiArt(void) { zfree(buf); } +static void sigtermHandler(int sig) { + REDIS_NOTUSED(sig); + + redisLog(REDIS_WARNING,"Received SIGTERM, scheduling shutdown..."); + server.shutdown_asap = 1; +} + +void setupSignalHandlers(void) { + struct sigaction act; + + /* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction is used. + * Otherwise, sa_handler is used. */ + sigemptyset(&act.sa_mask); + act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND; + act.sa_handler = sigtermHandler; + sigaction(SIGTERM, &act, NULL); + +#ifdef HAVE_BACKTRACE + sigemptyset(&act.sa_mask); + act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO; + act.sa_sigaction = sigsegvHandler; + sigaction(SIGSEGV, &act, NULL); + sigaction(SIGBUS, &act, NULL); + sigaction(SIGFPE, &act, NULL); + sigaction(SIGILL, &act, NULL); +#endif + return; +} + int main(int argc, char **argv) { long long start; zmalloc_enable_thread_safeness(); initServerConfig(); - if (argc == 2) { + if (argc >= 2) { + int j = 1; /* First option to parse in argv[] */ + sds options = sdsempty(); + char *configfile = NULL; + + /* Handle special options --help and --version */ if (strcmp(argv[1], "-v") == 0 || strcmp(argv[1], "--version") == 0) version(); - if (strcmp(argv[1], "--help") == 0) usage(); + if (strcmp(argv[1], "--help") == 0 || + strcmp(argv[1], "-h") == 0) usage(); + /* First argument is the config file name? */ + if (argv[j][0] != '-' || argv[j][1] != '-') + configfile = argv[j++]; + /* All the other options are parsed and conceptually appended to the + * configuration file. For instance --port 6380 will generate the + * string "port 6380\n" to be parsed after the actual file name + * is parsed, if any. */ + while(j != argc) { + if (argv[j][0] == '-' && argv[j][1] == '-') { + /* Option name */ + if (sdslen(options)) options = sdscat(options,"\n"); + options = sdscat(options,argv[j]+2); + options = sdscat(options," "); + } else { + /* Option argument */ + options = sdscatrepr(options,argv[j],strlen(argv[j])); + options = sdscat(options," "); + } + j++; + } resetServerSaveParams(); - loadServerConfig(argv[1]); - } else if ((argc > 2)) { - usage(); + 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'"); } @@ -1840,16 +2002,16 @@ int main(int argc, char **argv) { initServer(); if (server.daemonize) createPidFile(); redisAsciiArt(); - redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION); + redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION); #ifdef __linux__ linuxOvercommitMemoryWarning(); #endif start = ustime(); - if (server.appendonly) { - if (loadAppendOnlyFile(server.appendfilename) == REDIS_OK) + if (server.aof_state == REDIS_AOF_ON) { + if (loadAppendOnlyFile(server.aof_filename) == REDIS_OK) redisLog(REDIS_NOTICE,"DB loaded from append only file: %.3f seconds",(float)(ustime()-start)/1000000); } else { - if (rdbLoad(server.dbfilename) == REDIS_OK) { + if (rdbLoad(server.rdb_filename) == REDIS_OK) { redisLog(REDIS_NOTICE,"DB loaded from disk: %.3f seconds", (float)(ustime()-start)/1000000); } else if (errno != ENOENT) { @@ -1867,105 +2029,4 @@ int main(int argc, char **argv) { return 0; } -#ifdef HAVE_BACKTRACE -static void *getMcontextEip(ucontext_t *uc) { -#if defined(__FreeBSD__) - return (void*) uc->uc_mcontext.mc_eip; -#elif defined(__dietlibc__) - return (void*) uc->uc_mcontext.eip; -#elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6) - #if __x86_64__ - return (void*) uc->uc_mcontext->__ss.__rip; - #elif __i386__ - return (void*) uc->uc_mcontext->__ss.__eip; - #else - return (void*) uc->uc_mcontext->__ss.__srr0; - #endif -#elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6) - #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__) - return (void*) uc->uc_mcontext->__ss.__rip; - #else - return (void*) uc->uc_mcontext->__ss.__eip; - #endif -#elif defined(__i386__) - return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */ -#elif defined(__X86_64__) || defined(__x86_64__) - return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */ -#elif defined(__ia64__) /* Linux IA64 */ - return (void*) uc->uc_mcontext.sc_ip; -#else - return NULL; -#endif -} - -static void sigsegvHandler(int sig, siginfo_t *info, void *secret) { - void *trace[100]; - char **messages = NULL; - int i, trace_size = 0; - ucontext_t *uc = (ucontext_t*) secret; - sds infostring; - struct sigaction act; - REDIS_NOTUSED(info); - - redisLog(REDIS_WARNING, - "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig); - infostring = genRedisInfoString("all"); - redisLogRaw(REDIS_WARNING, infostring); - /* It's not safe to sdsfree() the returned string under memory - * corruption conditions. Let it leak as we are going to abort */ - - trace_size = backtrace(trace, 100); - /* overwrite sigaction with caller's address */ - if (getMcontextEip(uc) != NULL) { - trace[1] = getMcontextEip(uc); - } - messages = backtrace_symbols(trace, trace_size); - - for (i=1; i