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redict/src/config.c
antirez 894eba07c8 Introduction of a new string encoding: EMBSTR 
Previously two string encodings were used for string objects:

1) REDIS_ENCODING_RAW: a string object with obj->ptr pointing to an sds
stirng.

2) REDIS_ENCODING_INT: a string object where the obj->ptr void pointer
is casted to a long.

This commit introduces a experimental new encoding called
REDIS_ENCODING_EMBSTR that implements an object represented by an sds
string that is not modifiable but allocated in the same memory chunk as
the robj structure itself.

The chunk looks like the following:

+--------------+-----------+------------+--------+----+
| robj data... | robj->ptr | sds header | string | \0 |
+--------------+-----+-----+------------+--------+----+
                     |                       ^
                     +-----------------------+

The robj->ptr points to the contiguous sds string data, so the object
can be manipulated with the same functions used to manipulate plan
string objects, however we need just on malloc and one free in order to
allocate or release this kind of objects. Moreover it has better cache
locality.

This new allocation strategy should benefit both the memory usage and
the performances. A performance gain between 60 and 70% was observed
during micro-benchmarks, however there is more work to do to evaluate
the performance impact and the memory usage behavior.
2013-07-22 10:31:38 +02:00

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/* Configuration file parsing and CONFIG GET/SET commands implementation.
*
* 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 <fcntl.h>
#include <sys/stat.h>
static struct {
const char *name;
const int value;
} validSyslogFacilities[] = {
{"user", LOG_USER},
{"local0", LOG_LOCAL0},
{"local1", LOG_LOCAL1},
{"local2", LOG_LOCAL2},
{"local3", LOG_LOCAL3},
{"local4", LOG_LOCAL4},
{"local5", LOG_LOCAL5},
{"local6", LOG_LOCAL6},
{"local7", LOG_LOCAL7},
{NULL, 0}
};
clientBufferLimitsConfig clientBufferLimitsDefaults[REDIS_CLIENT_LIMIT_NUM_CLASSES] = {
{0, 0, 0}, /* normal */
{1024*1024*256, 1024*1024*64, 60}, /* slave */
{1024*1024*32, 1024*1024*8, 60} /* pubsub */
};
/*-----------------------------------------------------------------------------
* Config file parsing
*----------------------------------------------------------------------------*/
int yesnotoi(char *s) {
if (!strcasecmp(s,"yes")) return 1;
else if (!strcasecmp(s,"no")) return 0;
else return -1;
}
void appendServerSaveParams(time_t seconds, int changes) {
server.saveparams = zrealloc(server.saveparams,sizeof(struct saveparam)*(server.saveparamslen+1));
server.saveparams[server.saveparamslen].seconds = seconds;
server.saveparams[server.saveparamslen].changes = changes;
server.saveparamslen++;
}
void resetServerSaveParams() {
zfree(server.saveparams);
server.saveparams = NULL;
server.saveparamslen = 0;
}
void loadServerConfigFromString(char *config) {
char *err = NULL;
int linenum = 0, totlines, i;
sds *lines;
lines = sdssplitlen(config,strlen(config),"\n",1,&totlines);
for (i = 0; i < totlines; i++) {
sds *argv;
int argc;
linenum = i+1;
lines[i] = sdstrim(lines[i]," \t\r\n");
/* Skip comments and blank lines */
if (lines[i][0] == '#' || lines[i][0] == '\0') continue;
/* Split into arguments */
argv = sdssplitargs(lines[i],&argc);
if (argv == NULL) {
err = "Unbalanced quotes in configuration line";
goto loaderr;
}
/* Skip this line if the resulting command vector is empty. */
if (argc == 0) {
sdsfreesplitres(argv,argc);
continue;
}
sdstolower(argv[0]);
/* Execute config directives */
if (!strcasecmp(argv[0],"timeout") && argc == 2) {
server.maxidletime = atoi(argv[1]);
if (server.maxidletime < 0) {
err = "Invalid timeout value"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"tcp-keepalive") && argc == 2) {
server.tcpkeepalive = atoi(argv[1]);
if (server.tcpkeepalive < 0) {
err = "Invalid tcp-keepalive value"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"port") && argc == 2) {
server.port = atoi(argv[1]);
if (server.port < 0 || server.port > 65535) {
err = "Invalid port"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"bind") && argc >= 2) {
int j, addresses = argc-1;
if (addresses > REDIS_BINDADDR_MAX) {
err = "Too many bind addresses specified"; goto loaderr;
}
for (j = 0; j < addresses; j++)
server.bindaddr[j] = zstrdup(argv[j+1]);
server.bindaddr_count = addresses;
} else if (!strcasecmp(argv[0],"unixsocket") && argc == 2) {
server.unixsocket = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"unixsocketperm") && argc == 2) {
errno = 0;
server.unixsocketperm = (mode_t)strtol(argv[1], NULL, 8);
if (errno || server.unixsocketperm > 0777) {
err = "Invalid socket file permissions"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"save")) {
if (argc == 3) {
int seconds = atoi(argv[1]);
int changes = atoi(argv[2]);
if (seconds < 1 || changes < 0) {
err = "Invalid save parameters"; goto loaderr;
}
appendServerSaveParams(seconds,changes);
} else if (argc == 2 && !strcasecmp(argv[1],"")) {
resetServerSaveParams();
}
} else if (!strcasecmp(argv[0],"dir") && argc == 2) {
if (chdir(argv[1]) == -1) {
redisLog(REDIS_WARNING,"Can't chdir to '%s': %s",
argv[1], strerror(errno));
exit(1);
}
} else if (!strcasecmp(argv[0],"loglevel") && argc == 2) {
if (!strcasecmp(argv[1],"debug")) server.verbosity = REDIS_DEBUG;
else if (!strcasecmp(argv[1],"verbose")) server.verbosity = REDIS_VERBOSE;
else if (!strcasecmp(argv[1],"notice")) server.verbosity = REDIS_NOTICE;
else if (!strcasecmp(argv[1],"warning")) server.verbosity = REDIS_WARNING;
else {
err = "Invalid log level. Must be one of debug, notice, warning";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"logfile") && argc == 2) {
FILE *logfp;
zfree(server.logfile);
server.logfile = zstrdup(argv[1]);
if (server.logfile[0] != '\0') {
/* Test if we are able to open the file. The server will not
* be able to abort just for this problem later... */
logfp = fopen(server.logfile,"a");
if (logfp == NULL) {
err = sdscatprintf(sdsempty(),
"Can't open the log file: %s", strerror(errno));
goto loaderr;
}
fclose(logfp);
}
} else if (!strcasecmp(argv[0],"syslog-enabled") && argc == 2) {
if ((server.syslog_enabled = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"syslog-ident") && argc == 2) {
if (server.syslog_ident) zfree(server.syslog_ident);
server.syslog_ident = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"syslog-facility") && argc == 2) {
int i;
for (i = 0; validSyslogFacilities[i].name; i++) {
if (!strcasecmp(validSyslogFacilities[i].name, argv[1])) {
server.syslog_facility = validSyslogFacilities[i].value;
break;
}
}
if (!validSyslogFacilities[i].name) {
err = "Invalid log facility. Must be one of USER or between LOCAL0-LOCAL7";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"databases") && argc == 2) {
server.dbnum = atoi(argv[1]);
if (server.dbnum < 1) {
err = "Invalid number of databases"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"include") && argc == 2) {
loadServerConfig(argv[1],NULL);
} else if (!strcasecmp(argv[0],"maxclients") && argc == 2) {
server.maxclients = atoi(argv[1]);
if (server.maxclients < 1) {
err = "Invalid max clients limit"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
server.maxmemory = memtoll(argv[1],NULL);
} else if (!strcasecmp(argv[0],"maxmemory-policy") && argc == 2) {
if (!strcasecmp(argv[1],"volatile-lru")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
} else if (!strcasecmp(argv[1],"volatile-random")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
} else if (!strcasecmp(argv[1],"volatile-ttl")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
} else if (!strcasecmp(argv[1],"allkeys-lru")) {
server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
} else if (!strcasecmp(argv[1],"allkeys-random")) {
server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
} else if (!strcasecmp(argv[1],"noeviction")) {
server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
} else {
err = "Invalid maxmemory policy";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"maxmemory-samples") && argc == 2) {
server.maxmemory_samples = atoi(argv[1]);
if (server.maxmemory_samples <= 0) {
err = "maxmemory-samples must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
server.masterhost = sdsnew(argv[1]);
server.masterport = atoi(argv[2]);
server.repl_state = REDIS_REPL_CONNECT;
} else if (!strcasecmp(argv[0],"repl-ping-slave-period") && argc == 2) {
server.repl_ping_slave_period = atoi(argv[1]);
if (server.repl_ping_slave_period <= 0) {
err = "repl-ping-slave-period must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-timeout") && argc == 2) {
server.repl_timeout = atoi(argv[1]);
if (server.repl_timeout <= 0) {
err = "repl-timeout must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-disable-tcp-nodelay") && argc==2) {
if ((server.repl_disable_tcp_nodelay = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-backlog-size") && argc == 2) {
long long size = memtoll(argv[1],NULL);
if (size <= 0) {
err = "repl-backlog-size must be 1 or greater.";
goto loaderr;
}
resizeReplicationBacklog(size);
} else if (!strcasecmp(argv[0],"repl-backlog-ttl") && argc == 2) {
server.repl_backlog_time_limit = atoi(argv[1]);
if (server.repl_backlog_time_limit < 0) {
err = "repl-backlog-ttl can't be negative ";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"masterauth") && argc == 2) {
server.masterauth = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"slave-serve-stale-data") && argc == 2) {
if ((server.repl_serve_stale_data = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"slave-read-only") && argc == 2) {
if ((server.repl_slave_ro = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"rdbcompression") && argc == 2) {
if ((server.rdb_compression = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"rdbchecksum") && argc == 2) {
if ((server.rdb_checksum = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"activerehashing") && argc == 2) {
if ((server.activerehashing = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"daemonize") && argc == 2) {
if ((server.daemonize = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"hz") && argc == 2) {
server.hz = atoi(argv[1]);
if (server.hz < REDIS_MIN_HZ) server.hz = REDIS_MIN_HZ;
if (server.hz > REDIS_MAX_HZ) server.hz = REDIS_MAX_HZ;
} else if (!strcasecmp(argv[0],"appendonly") && argc == 2) {
int yes;
if ((yes = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
server.aof_state = yes ? REDIS_AOF_ON : REDIS_AOF_OFF;
} else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
if (!pathIsBaseName(argv[1])) {
err = "appendfilename can't be a path, just a filename";
goto loaderr;
}
zfree(server.aof_filename);
server.aof_filename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"no-appendfsync-on-rewrite")
&& argc == 2) {
if ((server.aof_no_fsync_on_rewrite= yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
if (!strcasecmp(argv[1],"no")) {
server.aof_fsync = AOF_FSYNC_NO;
} else if (!strcasecmp(argv[1],"always")) {
server.aof_fsync = AOF_FSYNC_ALWAYS;
} else if (!strcasecmp(argv[1],"everysec")) {
server.aof_fsync = AOF_FSYNC_EVERYSEC;
} else {
err = "argument must be 'no', 'always' or 'everysec'";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"auto-aof-rewrite-percentage") &&
argc == 2)
{
server.aof_rewrite_perc = atoi(argv[1]);
if (server.aof_rewrite_perc < 0) {
err = "Invalid negative percentage for AOF auto rewrite";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"auto-aof-rewrite-min-size") &&
argc == 2)
{
server.aof_rewrite_min_size = memtoll(argv[1],NULL);
} else if (!strcasecmp(argv[0],"aof-rewrite-incremental-fsync") &&
argc == 2)
{
if ((server.aof_rewrite_incremental_fsync = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"requirepass") && argc == 2) {
if (strlen(argv[1]) > REDIS_AUTHPASS_MAX_LEN) {
err = "Password is longer than REDIS_AUTHPASS_MAX_LEN";
goto loaderr;
}
server.requirepass = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"pidfile") && argc == 2) {
zfree(server.pidfile);
server.pidfile = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"dbfilename") && argc == 2) {
if (!pathIsBaseName(argv[1])) {
err = "dbfilename can't be a path, just a filename";
goto loaderr;
}
zfree(server.rdb_filename);
server.rdb_filename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"hash-max-ziplist-entries") && argc == 2) {
server.hash_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"hash-max-ziplist-value") && argc == 2) {
server.hash_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"list-max-ziplist-entries") && argc == 2){
server.list_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"list-max-ziplist-value") && argc == 2) {
server.list_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"set-max-intset-entries") && argc == 2) {
server.set_max_intset_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-entries") && argc == 2) {
server.zset_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-value") && argc == 2) {
server.zset_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"rename-command") && argc == 3) {
struct redisCommand *cmd = lookupCommand(argv[1]);
int retval;
if (!cmd) {
err = "No such command in rename-command";
goto loaderr;
}
/* If the target command name is the empty string we just
* remove it from the command table. */
retval = dictDelete(server.commands, argv[1]);
redisAssert(retval == DICT_OK);
/* Otherwise we re-add the command under a different name. */
if (sdslen(argv[2]) != 0) {
sds copy = sdsdup(argv[2]);
retval = dictAdd(server.commands, copy, cmd);
if (retval != DICT_OK) {
sdsfree(copy);
err = "Target command name already exists"; goto loaderr;
}
}
} else if (!strcasecmp(argv[0],"cluster-enabled") && argc == 2) {
if ((server.cluster_enabled = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"cluster-config-file") && argc == 2) {
zfree(server.cluster_configfile);
server.cluster_configfile = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"cluster-node-timeout") && argc == 2) {
server.cluster_node_timeout = atoi(argv[1]);
if (server.cluster_node_timeout <= 0) {
err = "cluster node timeout must be 1 or greater"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"lua-time-limit") && argc == 2) {
server.lua_time_limit = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"slowlog-log-slower-than") &&
argc == 2)
{
server.slowlog_log_slower_than = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"slowlog-max-len") && argc == 2) {
server.slowlog_max_len = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"client-output-buffer-limit") &&
argc == 5)
{
int class = getClientLimitClassByName(argv[1]);
unsigned long long hard, soft;
int soft_seconds;
if (class == -1) {
err = "Unrecognized client limit class";
goto loaderr;
}
hard = memtoll(argv[2],NULL);
soft = memtoll(argv[3],NULL);
soft_seconds = atoi(argv[4]);
if (soft_seconds < 0) {
err = "Negative number of seconds in soft limit is invalid";
goto loaderr;
}
server.client_obuf_limits[class].hard_limit_bytes = hard;
server.client_obuf_limits[class].soft_limit_bytes = soft;
server.client_obuf_limits[class].soft_limit_seconds = soft_seconds;
} else if (!strcasecmp(argv[0],"stop-writes-on-bgsave-error") &&
argc == 2) {
if ((server.stop_writes_on_bgsave_err = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"slave-priority") && argc == 2) {
server.slave_priority = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"min-slaves-to-write") && argc == 2) {
server.repl_min_slaves_to_write = atoi(argv[1]);
if (server.repl_min_slaves_to_write < 0) {
err = "Invalid value for min-slaves-to-write."; goto loaderr;
}
} else if (!strcasecmp(argv[0],"min-slaves-max-lag") && argc == 2) {
server.repl_min_slaves_max_lag = atoi(argv[1]);
if (server.repl_min_slaves_max_lag < 0) {
err = "Invalid value for min-slaves-max-lag."; goto loaderr;
}
} else if (!strcasecmp(argv[0],"notify-keyspace-events") && argc == 2) {
int flags = keyspaceEventsStringToFlags(argv[1]);
if (flags == -1) {
err = "Invalid event class character. Use 'g$lshzxeA'.";
goto loaderr;
}
server.notify_keyspace_events = flags;
} else if (!strcasecmp(argv[0],"sentinel")) {
/* argc == 1 is handled by main() as we need to enter the sentinel
* mode ASAP. */
if (argc != 1) {
if (!server.sentinel_mode) {
err = "sentinel directive while not in sentinel mode";
goto loaderr;
}
err = sentinelHandleConfiguration(argv+1,argc-1);
if (err) goto loaderr;
}
} else {
err = "Bad directive or wrong number of arguments"; goto loaderr;
}
sdsfreesplitres(argv,argc);
}
sdsfreesplitres(lines,totlines);
/* Sanity checks. */
if (server.cluster_enabled && server.masterhost) {
err = "slaveof directive not allowed in cluster mode";
goto loaderr;
}
return;
loaderr:
fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR ***\n");
fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
fprintf(stderr, ">>> '%s'\n", lines[i]);
fprintf(stderr, "%s\n", err);
exit(1);
}
/* Load the server configuration from the specified filename.
* The function appends the additional configuration directives stored
* in the 'options' string to the config file before loading.
*
* Both filename and options can be NULL, in such a case are considered
* empty. This way loadServerConfig can be used to just load a file or
* just load a string. */
void loadServerConfig(char *filename, char *options) {
sds config = sdsempty();
char buf[REDIS_CONFIGLINE_MAX+1];
/* Load the file content */
if (filename) {
FILE *fp;
if (filename[0] == '-' && filename[1] == '\0') {
fp = stdin;
} else {
if ((fp = fopen(filename,"r")) == NULL) {
redisLog(REDIS_WARNING,
"Fatal error, can't open config file '%s'", filename);
exit(1);
}
}
while(fgets(buf,REDIS_CONFIGLINE_MAX+1,fp) != NULL)
config = sdscat(config,buf);
if (fp != stdin) fclose(fp);
}
/* Append the additional options */
if (options) {
config = sdscat(config,"\n");
config = sdscat(config,options);
}
loadServerConfigFromString(config);
sdsfree(config);
}
/*-----------------------------------------------------------------------------
* CONFIG SET implementation
*----------------------------------------------------------------------------*/
void configSetCommand(redisClient *c) {
robj *o;
long long ll;
redisAssertWithInfo(c,c->argv[2],sdsEncodedObject(c->argv[2]));
redisAssertWithInfo(c,c->argv[3],sdsEncodedObject(c->argv[3]));
o = c->argv[3];
if (!strcasecmp(c->argv[2]->ptr,"dbfilename")) {
if (!pathIsBaseName(o->ptr)) {
addReplyError(c, "dbfilename can't be a path, just a filename");
return;
}
zfree(server.rdb_filename);
server.rdb_filename = zstrdup(o->ptr);
} else if (!strcasecmp(c->argv[2]->ptr,"requirepass")) {
if (sdslen(o->ptr) > REDIS_AUTHPASS_MAX_LEN) goto badfmt;
zfree(server.requirepass);
server.requirepass = ((char*)o->ptr)[0] ? zstrdup(o->ptr) : NULL;
} else if (!strcasecmp(c->argv[2]->ptr,"masterauth")) {
zfree(server.masterauth);
server.masterauth = ((char*)o->ptr)[0] ? zstrdup(o->ptr) : NULL;
} else if (!strcasecmp(c->argv[2]->ptr,"maxmemory")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0) goto badfmt;
server.maxmemory = ll;
if (server.maxmemory) {
if (server.maxmemory < zmalloc_used_memory()) {
redisLog(REDIS_WARNING,"WARNING: the new maxmemory value set via CONFIG SET is smaller than the current memory usage. This will result in keys eviction and/or inability to accept new write commands depending on the maxmemory-policy.");
}
freeMemoryIfNeeded();
}
} else if (!strcasecmp(c->argv[2]->ptr,"maxclients")) {
int orig_value = server.maxclients;
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
/* Try to check if the OS is capable of supporting so many FDs. */
server.maxclients = ll;
if (ll > orig_value) {
adjustOpenFilesLimit();
if (server.maxclients != ll) {
addReplyErrorFormat(c,"The operating system is not able to handle the specified number of clients, try with %d", server.maxclients);
server.maxclients = orig_value;
return;
}
if (aeGetSetSize(server.el) <
server.maxclients + REDIS_EVENTLOOP_FDSET_INCR)
{
if (aeResizeSetSize(server.el,
server.maxclients + REDIS_EVENTLOOP_FDSET_INCR) == AE_ERR)
{
addReplyError(c,"The event loop API used by Redis is not able to handle the specified number of clients");
server.maxclients = orig_value;
return;
}
}
}
} else if (!strcasecmp(c->argv[2]->ptr,"hz")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.hz = ll;
if (server.hz < REDIS_MIN_HZ) server.hz = REDIS_MIN_HZ;
if (server.hz > REDIS_MAX_HZ) server.hz = REDIS_MAX_HZ;
} else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-policy")) {
if (!strcasecmp(o->ptr,"volatile-lru")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
} else if (!strcasecmp(o->ptr,"volatile-random")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
} else if (!strcasecmp(o->ptr,"volatile-ttl")) {
server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
} else if (!strcasecmp(o->ptr,"allkeys-lru")) {
server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
} else if (!strcasecmp(o->ptr,"allkeys-random")) {
server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
} else if (!strcasecmp(o->ptr,"noeviction")) {
server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
} else {
goto badfmt;
}
} else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-samples")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll <= 0) goto badfmt;
server.maxmemory_samples = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"timeout")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0 || ll > LONG_MAX) goto badfmt;
server.maxidletime = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"tcp-keepalive")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0 || ll > INT_MAX) goto badfmt;
server.tcpkeepalive = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"appendfsync")) {
if (!strcasecmp(o->ptr,"no")) {
server.aof_fsync = AOF_FSYNC_NO;
} else if (!strcasecmp(o->ptr,"everysec")) {
server.aof_fsync = AOF_FSYNC_EVERYSEC;
} else if (!strcasecmp(o->ptr,"always")) {
server.aof_fsync = AOF_FSYNC_ALWAYS;
} else {
goto badfmt;
}
} else if (!strcasecmp(c->argv[2]->ptr,"no-appendfsync-on-rewrite")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.aof_no_fsync_on_rewrite = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"appendonly")) {
int enable = yesnotoi(o->ptr);
if (enable == -1) goto badfmt;
if (enable == 0 && server.aof_state != REDIS_AOF_OFF) {
stopAppendOnly();
} else if (enable && server.aof_state == REDIS_AOF_OFF) {
if (startAppendOnly() == REDIS_ERR) {
addReplyError(c,
"Unable to turn on AOF. Check server logs.");
return;
}
}
} else if (!strcasecmp(c->argv[2]->ptr,"auto-aof-rewrite-percentage")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.aof_rewrite_perc = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"auto-aof-rewrite-min-size")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.aof_rewrite_min_size = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"aof-rewrite-incremental-fsync")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.aof_rewrite_incremental_fsync = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"save")) {
int vlen, j;
sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
/* Perform sanity check before setting the new config:
* - Even number of args
* - Seconds >= 1, changes >= 0 */
if (vlen & 1) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
for (j = 0; j < vlen; j++) {
char *eptr;
long val;
val = strtoll(v[j], &eptr, 10);
if (eptr[0] != '\0' ||
((j & 1) == 0 && val < 1) ||
((j & 1) == 1 && val < 0)) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
}
/* Finally set the new config */
resetServerSaveParams();
for (j = 0; j < vlen; j += 2) {
time_t seconds;
int changes;
seconds = strtoll(v[j],NULL,10);
changes = strtoll(v[j+1],NULL,10);
appendServerSaveParams(seconds, changes);
}
sdsfreesplitres(v,vlen);
} else if (!strcasecmp(c->argv[2]->ptr,"slave-serve-stale-data")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.repl_serve_stale_data = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"slave-read-only")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.repl_slave_ro = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"dir")) {
if (chdir((char*)o->ptr) == -1) {
addReplyErrorFormat(c,"Changing directory: %s", strerror(errno));
return;
}
} else if (!strcasecmp(c->argv[2]->ptr,"hash-max-ziplist-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.hash_max_ziplist_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"hash-max-ziplist-value")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.hash_max_ziplist_value = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"list-max-ziplist-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.list_max_ziplist_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"list-max-ziplist-value")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.list_max_ziplist_value = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"set-max-intset-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.set_max_intset_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.zset_max_ziplist_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-value")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.zset_max_ziplist_value = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"lua-time-limit")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.lua_time_limit = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"slowlog-log-slower-than")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR) goto badfmt;
server.slowlog_log_slower_than = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"slowlog-max-len")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.slowlog_max_len = (unsigned)ll;
} else if (!strcasecmp(c->argv[2]->ptr,"loglevel")) {
if (!strcasecmp(o->ptr,"warning")) {
server.verbosity = REDIS_WARNING;
} else if (!strcasecmp(o->ptr,"notice")) {
server.verbosity = REDIS_NOTICE;
} else if (!strcasecmp(o->ptr,"verbose")) {
server.verbosity = REDIS_VERBOSE;
} else if (!strcasecmp(o->ptr,"debug")) {
server.verbosity = REDIS_DEBUG;
} else {
goto badfmt;
}
} else if (!strcasecmp(c->argv[2]->ptr,"client-output-buffer-limit")) {
int vlen, j;
sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
/* We need a multiple of 4: <class> <hard> <soft> <soft_seconds> */
if (vlen % 4) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
/* Sanity check of single arguments, so that we either refuse the
* whole configuration string or accept it all, even if a single
* error in a single client class is present. */
for (j = 0; j < vlen; j++) {
char *eptr;
long val;
if ((j % 4) == 0) {
if (getClientLimitClassByName(v[j]) == -1) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
} else {
val = strtoll(v[j], &eptr, 10);
if (eptr[0] != '\0' || val < 0) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
}
}
/* Finally set the new config */
for (j = 0; j < vlen; j += 4) {
int class;
unsigned long long hard, soft;
int soft_seconds;
class = getClientLimitClassByName(v[j]);
hard = strtoll(v[j+1],NULL,10);
soft = strtoll(v[j+2],NULL,10);
soft_seconds = strtoll(v[j+3],NULL,10);
server.client_obuf_limits[class].hard_limit_bytes = hard;
server.client_obuf_limits[class].soft_limit_bytes = soft;
server.client_obuf_limits[class].soft_limit_seconds = soft_seconds;
}
sdsfreesplitres(v,vlen);
} else if (!strcasecmp(c->argv[2]->ptr,"stop-writes-on-bgsave-error")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.stop_writes_on_bgsave_err = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"repl-ping-slave-period")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll <= 0) goto badfmt;
server.repl_ping_slave_period = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"repl-timeout")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll <= 0) goto badfmt;
server.repl_timeout = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"repl-backlog-size")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll <= 0) goto badfmt;
resizeReplicationBacklog(ll);
} else if (!strcasecmp(c->argv[2]->ptr,"repl-backlog-ttl")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.repl_backlog_time_limit = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"watchdog-period")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
if (ll)
enableWatchdog(ll);
else
disableWatchdog();
} else if (!strcasecmp(c->argv[2]->ptr,"rdbcompression")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.rdb_compression = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"notify-keyspace-events")) {
int flags = keyspaceEventsStringToFlags(o->ptr);
if (flags == -1) goto badfmt;
server.notify_keyspace_events = flags;
} else if (!strcasecmp(c->argv[2]->ptr,"repl-disable-tcp-nodelay")) {
int yn = yesnotoi(o->ptr);
if (yn == -1) goto badfmt;
server.repl_disable_tcp_nodelay = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"slave-priority")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0) goto badfmt;
server.slave_priority = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"min-slaves-to-write")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0) goto badfmt;
server.repl_min_slaves_to_write = ll;
refreshGoodSlavesCount();
} else if (!strcasecmp(c->argv[2]->ptr,"min-slaves-max-lag")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll < 0) goto badfmt;
server.repl_min_slaves_max_lag = ll;
refreshGoodSlavesCount();
} else if (!strcasecmp(c->argv[2]->ptr,"cluster-node-timeout")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll <= 0) goto badfmt;
server.cluster_node_timeout = ll;
} else {
addReplyErrorFormat(c,"Unsupported CONFIG parameter: %s",
(char*)c->argv[2]->ptr);
return;
}
addReply(c,shared.ok);
return;
badfmt: /* Bad format errors */
addReplyErrorFormat(c,"Invalid argument '%s' for CONFIG SET '%s'",
(char*)o->ptr,
(char*)c->argv[2]->ptr);
}
/*-----------------------------------------------------------------------------
* CONFIG GET implementation
*----------------------------------------------------------------------------*/
#define config_get_string_field(_name,_var) do { \
if (stringmatch(pattern,_name,0)) { \
addReplyBulkCString(c,_name); \
addReplyBulkCString(c,_var ? _var : ""); \
matches++; \
} \
} while(0);
#define config_get_bool_field(_name,_var) do { \
if (stringmatch(pattern,_name,0)) { \
addReplyBulkCString(c,_name); \
addReplyBulkCString(c,_var ? "yes" : "no"); \
matches++; \
} \
} while(0);
#define config_get_numerical_field(_name,_var) do { \
if (stringmatch(pattern,_name,0)) { \
ll2string(buf,sizeof(buf),_var); \
addReplyBulkCString(c,_name); \
addReplyBulkCString(c,buf); \
matches++; \
} \
} while(0);
void configGetCommand(redisClient *c) {
robj *o = c->argv[2];
void *replylen = addDeferredMultiBulkLength(c);
char *pattern = o->ptr;
char buf[128];
int matches = 0;
redisAssertWithInfo(c,o,sdsEncodedObject(o));
/* String values */
config_get_string_field("dbfilename",server.rdb_filename);
config_get_string_field("requirepass",server.requirepass);
config_get_string_field("masterauth",server.masterauth);
config_get_string_field("unixsocket",server.unixsocket);
config_get_string_field("logfile",server.logfile);
config_get_string_field("pidfile",server.pidfile);
/* Numerical values */
config_get_numerical_field("maxmemory",server.maxmemory);
config_get_numerical_field("maxmemory-samples",server.maxmemory_samples);
config_get_numerical_field("timeout",server.maxidletime);
config_get_numerical_field("tcp-keepalive",server.tcpkeepalive);
config_get_numerical_field("auto-aof-rewrite-percentage",
server.aof_rewrite_perc);
config_get_numerical_field("auto-aof-rewrite-min-size",
server.aof_rewrite_min_size);
config_get_numerical_field("hash-max-ziplist-entries",
server.hash_max_ziplist_entries);
config_get_numerical_field("hash-max-ziplist-value",
server.hash_max_ziplist_value);
config_get_numerical_field("list-max-ziplist-entries",
server.list_max_ziplist_entries);
config_get_numerical_field("list-max-ziplist-value",
server.list_max_ziplist_value);
config_get_numerical_field("set-max-intset-entries",
server.set_max_intset_entries);
config_get_numerical_field("zset-max-ziplist-entries",
server.zset_max_ziplist_entries);
config_get_numerical_field("zset-max-ziplist-value",
server.zset_max_ziplist_value);
config_get_numerical_field("lua-time-limit",server.lua_time_limit);
config_get_numerical_field("slowlog-log-slower-than",
server.slowlog_log_slower_than);
config_get_numerical_field("slowlog-max-len",
server.slowlog_max_len);
config_get_numerical_field("port",server.port);
config_get_numerical_field("databases",server.dbnum);
config_get_numerical_field("repl-ping-slave-period",server.repl_ping_slave_period);
config_get_numerical_field("repl-timeout",server.repl_timeout);
config_get_numerical_field("repl-backlog-size",server.repl_backlog_size);
config_get_numerical_field("repl-backlog-ttl",server.repl_backlog_time_limit);
config_get_numerical_field("maxclients",server.maxclients);
config_get_numerical_field("watchdog-period",server.watchdog_period);
config_get_numerical_field("slave-priority",server.slave_priority);
config_get_numerical_field("min-slaves-to-write",server.repl_min_slaves_to_write);
config_get_numerical_field("min-slaves-max-lag",server.repl_min_slaves_max_lag);
config_get_numerical_field("hz",server.hz);
config_get_numerical_field("cluster-node-timeout",server.cluster_node_timeout);
/* Bool (yes/no) values */
config_get_bool_field("no-appendfsync-on-rewrite",
server.aof_no_fsync_on_rewrite);
config_get_bool_field("slave-serve-stale-data",
server.repl_serve_stale_data);
config_get_bool_field("slave-read-only",
server.repl_slave_ro);
config_get_bool_field("stop-writes-on-bgsave-error",
server.stop_writes_on_bgsave_err);
config_get_bool_field("daemonize", server.daemonize);
config_get_bool_field("rdbcompression", server.rdb_compression);
config_get_bool_field("rdbchecksum", server.rdb_checksum);
config_get_bool_field("activerehashing", server.activerehashing);
config_get_bool_field("repl-disable-tcp-nodelay",
server.repl_disable_tcp_nodelay);
config_get_bool_field("aof-rewrite-incremental-fsync",
server.aof_rewrite_incremental_fsync);
/* Everything we can't handle with macros follows. */
if (stringmatch(pattern,"appendonly",0)) {
addReplyBulkCString(c,"appendonly");
addReplyBulkCString(c,server.aof_state == REDIS_AOF_OFF ? "no" : "yes");
matches++;
}
if (stringmatch(pattern,"dir",0)) {
char buf[1024];
if (getcwd(buf,sizeof(buf)) == NULL)
buf[0] = '\0';
addReplyBulkCString(c,"dir");
addReplyBulkCString(c,buf);
matches++;
}
if (stringmatch(pattern,"maxmemory-policy",0)) {
char *s;
switch(server.maxmemory_policy) {
case REDIS_MAXMEMORY_VOLATILE_LRU: s = "volatile-lru"; break;
case REDIS_MAXMEMORY_VOLATILE_TTL: s = "volatile-ttl"; break;
case REDIS_MAXMEMORY_VOLATILE_RANDOM: s = "volatile-random"; break;
case REDIS_MAXMEMORY_ALLKEYS_LRU: s = "allkeys-lru"; break;
case REDIS_MAXMEMORY_ALLKEYS_RANDOM: s = "allkeys-random"; break;
case REDIS_MAXMEMORY_NO_EVICTION: s = "noeviction"; break;
default: s = "unknown"; break; /* too harmless to panic */
}
addReplyBulkCString(c,"maxmemory-policy");
addReplyBulkCString(c,s);
matches++;
}
if (stringmatch(pattern,"appendfsync",0)) {
char *policy;
switch(server.aof_fsync) {
case AOF_FSYNC_NO: policy = "no"; break;
case AOF_FSYNC_EVERYSEC: policy = "everysec"; break;
case AOF_FSYNC_ALWAYS: policy = "always"; break;
default: policy = "unknown"; break; /* too harmless to panic */
}
addReplyBulkCString(c,"appendfsync");
addReplyBulkCString(c,policy);
matches++;
}
if (stringmatch(pattern,"save",0)) {
sds buf = sdsempty();
int j;
for (j = 0; j < server.saveparamslen; j++) {
buf = sdscatprintf(buf,"%jd %d",
(intmax_t)server.saveparams[j].seconds,
server.saveparams[j].changes);
if (j != server.saveparamslen-1)
buf = sdscatlen(buf," ",1);
}
addReplyBulkCString(c,"save");
addReplyBulkCString(c,buf);
sdsfree(buf);
matches++;
}
if (stringmatch(pattern,"loglevel",0)) {
char *s;
switch(server.verbosity) {
case REDIS_WARNING: s = "warning"; break;
case REDIS_VERBOSE: s = "verbose"; break;
case REDIS_NOTICE: s = "notice"; break;
case REDIS_DEBUG: s = "debug"; break;
default: s = "unknown"; break; /* too harmless to panic */
}
addReplyBulkCString(c,"loglevel");
addReplyBulkCString(c,s);
matches++;
}
if (stringmatch(pattern,"client-output-buffer-limit",0)) {
sds buf = sdsempty();
int j;
for (j = 0; j < REDIS_CLIENT_LIMIT_NUM_CLASSES; j++) {
buf = sdscatprintf(buf,"%s %llu %llu %ld",
getClientLimitClassName(j),
server.client_obuf_limits[j].hard_limit_bytes,
server.client_obuf_limits[j].soft_limit_bytes,
(long) server.client_obuf_limits[j].soft_limit_seconds);
if (j != REDIS_CLIENT_LIMIT_NUM_CLASSES-1)
buf = sdscatlen(buf," ",1);
}
addReplyBulkCString(c,"client-output-buffer-limit");
addReplyBulkCString(c,buf);
sdsfree(buf);
matches++;
}
if (stringmatch(pattern,"unixsocketperm",0)) {
char buf[32];
snprintf(buf,sizeof(buf),"%o",server.unixsocketperm);
addReplyBulkCString(c,"unixsocketperm");
addReplyBulkCString(c,buf);
matches++;
}
if (stringmatch(pattern,"slaveof",0)) {
char buf[256];
addReplyBulkCString(c,"slaveof");
if (server.masterhost)
snprintf(buf,sizeof(buf),"%s %d",
server.masterhost, server.masterport);
else
buf[0] = '\0';
addReplyBulkCString(c,buf);
matches++;
}
if (stringmatch(pattern,"notify-keyspace-events",0)) {
robj *flagsobj = createObject(REDIS_STRING,
keyspaceEventsFlagsToString(server.notify_keyspace_events));
addReplyBulkCString(c,"notify-keyspace-events");
addReplyBulk(c,flagsobj);
decrRefCount(flagsobj);
matches++;
}
if (stringmatch(pattern,"bind",0)) {
sds aux = sdsjoin(server.bindaddr,server.bindaddr_count," ");
addReplyBulkCString(c,"bind");
addReplyBulkCString(c,aux);
sdsfree(aux);
matches++;
}
setDeferredMultiBulkLength(c,replylen,matches*2);
}
/*-----------------------------------------------------------------------------
* CONFIG REWRITE implementation
*----------------------------------------------------------------------------*/
/* IGNORE:
*
* rename-command
* include
*
* Special handling:
*
* notify-keyspace-events
* client-output-buffer-limit
* save
* appendonly
* appendfsync
* dir
* maxmemory-policy
* loglevel
* unixsocketperm
* slaveof
*
* Type of config directives:
*
* CUSTOM
* VERBATIM
* YESNO
* L
* LL
*
*/
/* We use the following dictionary type to store where a configuration
* option is mentioned in the old configuration file, so it's
* like "maxmemory" -> list of line numbers (first line is zero). */
unsigned int dictSdsHash(const void *key);
int dictSdsKeyCompare(void *privdata, const void *key1, const void *key2);
void dictSdsDestructor(void *privdata, void *val);
void dictListDestructor(void *privdata, void *val);
dictType optionToLineDictType = {
dictSdsHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
dictSdsKeyCompare, /* key compare */
dictSdsDestructor, /* key destructor */
dictListDestructor /* val destructor */
};
/* The config rewrite state. */
struct rewriteConfigState {
dict *option_to_line; /* Option -> list of config file lines map */
int numlines; /* Number of lines in current config */
sds *lines; /* Current lines as an array of sds strings */
int has_tail; /* True if we already added directives that were
not present in the original config file. */
};
/* Append the new line to the current configuration state. */
void rewriteConfigAppendLine(struct rewriteConfigState *state, sds line) {
state->lines = zrealloc(state->lines, sizeof(char*) * (state->numlines+1));
state->lines[state->numlines++] = line;
}
/* Populate the option -> list of line numbers map. */
void rewriteConfigAddLineNumberToOption(struct rewriteConfigState *state, sds option, int linenum) {
list *l = dictFetchValue(state->option_to_line,option);
if (l == NULL) {
l = listCreate();
dictAdd(state->option_to_line,sdsdup(option),l);
}
listAddNodeTail(l,(void*)(long)linenum);
}
/* Read the old file, split it into lines to populate a newly created
* config rewrite state, and return it to the caller.
*
* If it is impossible to read the old file, NULL is returned.
* If the old file does not exist at all, an empty state is returned. */
struct rewriteConfigState *rewriteConfigReadOldFile(char *path) {
FILE *fp = fopen(path,"r");
struct rewriteConfigState *state = zmalloc(sizeof(*state));
char buf[REDIS_CONFIGLINE_MAX+1];
int linenum = -1;
if (fp == NULL && errno != ENOENT) return NULL;
state->option_to_line = dictCreate(&optionToLineDictType,NULL);
state->numlines = 0;
state->lines = NULL;
state->has_tail = 0;
if (fp == NULL) return state;
/* Read the old file line by line, populate the state. */
while(fgets(buf,REDIS_CONFIGLINE_MAX+1,fp) != NULL) {
int argc;
sds *argv;
sds line = sdstrim(sdsnew(buf),"\r\n\t ");
linenum++; /* Zero based, so we init at -1 */
/* Handle comments and empty lines. */
if (line[0] == '#' || line[0] == '\0') {
rewriteConfigAppendLine(state,line);
continue;
}
/* Not a comment, split into arguments. */
argv = sdssplitargs(line,&argc);
if (argv == NULL) {
/* Apparently the line is unparsable for some reason, for
* instance it may have unbalanced quotes. Load it as a
* comment. */
sds aux = sdsnew("# ??? ");
aux = sdscatsds(aux,line);
sdsfree(line);
rewriteConfigAppendLine(state,aux);
continue;
}
sdstolower(argv[0]); /* We only want lowercase config directives. */
/* Now we populate the state according to the content of this line.
* Append the line and populate the option -> line numbers map. */
rewriteConfigAppendLine(state,line);
rewriteConfigAddLineNumberToOption(state,argv[0],linenum);
sdsfreesplitres(argv,argc);
}
fclose(fp);
return state;
}
/* Rewrite the specified configuration option with the new "line".
* It progressively uses lines of the file that were already used for the same
* configuraiton option in the old version of the file, removing that line from
* the map of options -> line numbers.
*
* If there are lines associated with a given configuration option and
* "force" is non-zero, the line is appended to the configuration file.
* Usually "force" is true when an option has not its default value, so it
* must be rewritten even if not present previously.
*
* The first time a line is appended into a configuration file, a comment
* is added to show that starting from that point the config file was generated
* by CONFIG REWRITE.
*
* "line" is either used, or freed, so the caller does not need to free it
* in any way. */
void rewriteConfigRewriteLine(struct rewriteConfigState *state, char *option, sds line, int force) {
sds o = sdsnew(option);
list *l = dictFetchValue(state->option_to_line,o);
if (!l && !force) {
/* Option not used previously, and we are not forced to use it. */
sdsfree(line);
sdsfree(o);
return;
}
if (l) {
listNode *ln = listFirst(l);
int linenum = (long) ln->value;
/* There are still lines in the old configuration file we can reuse
* for this option. Replace the line with the new one. */
listDelNode(l,ln);
if (listLength(l) == 0) dictDelete(state->option_to_line,o);
sdsfree(state->lines[linenum]);
state->lines[linenum] = line;
} else {
/* Append a new line. */
if (!state->has_tail) {
rewriteConfigAppendLine(state,
sdsnew("# Generated by CONFIG REWRITE"));
state->has_tail = 1;
}
rewriteConfigAppendLine(state,line);
}
sdsfree(o);
}
/* Write the long long 'bytes' value as a string in a way that is parsable
* inside redis.conf. If possible uses the GB, MB, KB notation. */
int rewriteConfigFormatMemory(char *buf, size_t len, long long bytes) {
int gb = 1024*1024*1024;
int mb = 1024*1024;
int kb = 1024;
if (bytes && (bytes % gb) == 0) {
return snprintf(buf,len,"%lldgb",bytes/gb);
} else if (bytes && (bytes % mb) == 0) {
return snprintf(buf,len,"%lldmb",bytes/mb);
} else if (bytes && (bytes % kb) == 0) {
return snprintf(buf,len,"%lldkb",bytes/kb);
} else {
return snprintf(buf,len,"%lld",bytes);
}
}
/* Rewrite a simple "option-name <bytes>" configuration option. */
void rewriteConfigBytesOption(struct rewriteConfigState *state, char *option, long long value, long long defvalue) {
char buf[64];
int force = value != defvalue;
sds line;
rewriteConfigFormatMemory(buf,sizeof(buf),value);
line = sdscatprintf(sdsempty(),"%s %s",option,buf);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite a yes/no option. */
void rewriteConfigYesNoOption(struct rewriteConfigState *state, char *option, int value, int defvalue) {
int force = value != defvalue;
sds line = sdscatprintf(sdsempty(),"%s %s",option,
value ? "yes" : "no");
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite a string option. */
void rewriteConfigStringOption(struct rewriteConfigState *state, char *option, char *value, char *defvalue) {
int force = 1;
sds line;
/* String options set to NULL need to be not present at all in the
* configuration file to be set to NULL again at the next reboot. */
if (value == NULL) return;
/* Compare the strings as sds strings to have a binary safe comparison. */
if (defvalue && strcmp(value,defvalue) == 0) force = 0;
line = sdsnew(option);
line = sdscatlen(line, " ", 1);
line = sdscatrepr(line, value, strlen(value));
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite a numerical (long long range) option. */
void rewriteConfigNumericalOption(struct rewriteConfigState *state, char *option, long long value, long long defvalue) {
int force = value != defvalue;
sds line = sdscatprintf(sdsempty(),"%s %lld",option,value);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite a octal option. */
void rewriteConfigOctalOption(struct rewriteConfigState *state, char *option, int value, int defvalue) {
int force = value != defvalue;
sds line = sdscatprintf(sdsempty(),"%s %o",option,value);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite an enumeration option, after the "value" every enum/value pair
* is specified, terminated by NULL. After NULL the default value is
* specified. See how the function is used for more information. */
void rewriteConfigEnumOption(struct rewriteConfigState *state, char *option, int value, ...) {
va_list ap;
char *enum_name, *matching_name = NULL;
int enum_val, def_val, force;
sds line;
va_start(ap, value);
while(1) {
enum_name = va_arg(ap,char*);
enum_val = va_arg(ap,int);
if (enum_name == NULL) {
def_val = enum_val;
break;
}
if (value == enum_val) matching_name = enum_name;
}
va_end(ap);
force = value != def_val;
line = sdscatprintf(sdsempty(),"%s %s",option,matching_name);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite the syslog-fability option. */
void rewriteConfigSyslogfacilityOption(struct rewriteConfigState *state) {
int value = server.syslog_facility, j;
int force = value != LOG_LOCAL0;
char *name = NULL, *option = "syslog-facility";
sds line;
for (j = 0; validSyslogFacilities[j].name; j++) {
if (validSyslogFacilities[j].value == value) {
name = (char*) validSyslogFacilities[j].name;
break;
}
}
line = sdscatprintf(sdsempty(),"%s %s",option,name);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite the save option. */
void rewriteConfigSaveOption(struct rewriteConfigState *state) {
int j;
sds line;
/* Note that if there are no save parameters at all, all the current
* config line with "save" will be detected as orphaned and deleted,
* resulting into no RDB persistence as expected. */
for (j = 0; j < server.saveparamslen; j++) {
line = sdscatprintf(sdsempty(),"save %ld %d",
server.saveparams[j].seconds, server.saveparams[j].changes);
rewriteConfigRewriteLine(state,"save",line,1);
}
}
/* Rewrite the dir option, always using absolute paths.*/
void rewriteConfigDirOption(struct rewriteConfigState *state) {
char cwd[1024];
if (getcwd(cwd,sizeof(cwd)) == NULL) return; /* no rewrite on error. */
rewriteConfigStringOption(state,"dir",cwd,NULL);
}
/* Rewrite the slaveof option. */
void rewriteConfigSlaveofOption(struct rewriteConfigState *state) {
char *option = "slaveof";
sds line;
/* If this is a master, we want all the slaveof config options
* in the file to be removed. */
if (server.masterhost == NULL) return;
line = sdscatprintf(sdsempty(),"%s %s %d", option,
server.masterhost, server.masterport);
rewriteConfigRewriteLine(state,option,line,1);
}
/* Rewrite the appendonly option. */
void rewriteConfigAppendonlyOption(struct rewriteConfigState *state) {
int force = server.aof_state != REDIS_AOF_OFF;
char *option = "appendonly";
sds line;
line = sdscatprintf(sdsempty(),"%s %s", option,
(server.aof_state == REDIS_AOF_OFF) ? "no" : "yes");
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite the notify-keyspace-events option. */
void rewriteConfigNotifykeyspaceeventsOption(struct rewriteConfigState *state) {
int force = server.notify_keyspace_events != 0;
char *option = "notify-keyspace-events";
sds line, flags;
flags = keyspaceEventsFlagsToString(server.notify_keyspace_events);
line = sdsnew(option);
line = sdscatlen(line, " ", 1);
line = sdscatrepr(line, flags, sdslen(flags));
sdsfree(flags);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Rewrite the client-output-buffer-limit option. */
void rewriteConfigClientoutputbufferlimitOption(struct rewriteConfigState *state) {
int j;
char *option = "client-output-buffer-limit";
for (j = 0; j < REDIS_CLIENT_LIMIT_NUM_CLASSES; j++) {
int force = (server.client_obuf_limits[j].hard_limit_bytes !=
clientBufferLimitsDefaults[j].hard_limit_bytes) ||
(server.client_obuf_limits[j].soft_limit_bytes !=
clientBufferLimitsDefaults[j].soft_limit_bytes) ||
(server.client_obuf_limits[j].soft_limit_seconds !=
clientBufferLimitsDefaults[j].soft_limit_seconds);
sds line;
char hard[64], soft[64];
rewriteConfigFormatMemory(hard,sizeof(hard),
server.client_obuf_limits[j].hard_limit_bytes);
rewriteConfigFormatMemory(soft,sizeof(soft),
server.client_obuf_limits[j].soft_limit_bytes);
line = sdscatprintf(sdsempty(),"%s %s %s %s %ld",
option, getClientLimitClassName(j), hard, soft,
(long) server.client_obuf_limits[j].soft_limit_seconds);
rewriteConfigRewriteLine(state,option,line,force);
}
}
/* Rewrite the bind option. */
void rewriteConfigBindOption(struct rewriteConfigState *state) {
int force = 1;
sds line, addresses;
char *option = "bind";
/* Nothing to rewrite if we don't have bind addresses. */
if (server.bindaddr_count == 0) return;
/* Rewrite as bind <addr1> <addr2> ... <addrN> */
addresses = sdsjoin(server.bindaddr,server.bindaddr_count," ");
line = sdsnew(option);
line = sdscatlen(line, " ", 1);
line = sdscatsds(line, addresses);
sdsfree(addresses);
rewriteConfigRewriteLine(state,option,line,force);
}
/* Glue together the configuration lines in the current configuration
* rewrite state into a single string, stripping multiple empty lines. */
sds rewriteConfigGetContentFromState(struct rewriteConfigState *state) {
sds content = sdsempty();
int j, was_empty = 0;
for (j = 0; j < state->numlines; j++) {
/* Every cluster of empty lines is turned into a single empty line. */
if (sdslen(state->lines[j]) == 0) {
if (was_empty) continue;
was_empty = 1;
} else {
was_empty = 0;
}
content = sdscatsds(content,state->lines[j]);
content = sdscatlen(content,"\n",1);
}
return content;
}
/* Free the configuration rewrite state. */
void rewriteConfigReleaseState(struct rewriteConfigState *state) {
sdsfreesplitres(state->lines,state->numlines);
dictRelease(state->option_to_line);
zfree(state);
}
/* At the end of the rewrite process the state contains the remaining
* map between "option name" => "lines in the original config file".
* Lines used by the rewrite process were removed by the function
* rewriteConfigRewriteLine(), all the other lines are "orphaned" and
* should be replaced by empty lines.
*
* This function does just this, iterating all the option names and
* blanking all the lines still associated. */
void rewriteConfigRemoveOrphaned(struct rewriteConfigState *state) {
dictIterator *di = dictGetIterator(state->option_to_line);
dictEntry *de;
while((de = dictNext(di)) != NULL) {
list *l = dictGetVal(de);
while(listLength(l)) {
listNode *ln = listFirst(l);
int linenum = (long) ln->value;
sdsfree(state->lines[linenum]);
state->lines[linenum] = sdsempty();
listDelNode(l,ln);
}
}
dictReleaseIterator(di);
}
/* This function overwrites the old configuration file with the new content.
*
* 1) The old file length is obtained.
* 2) If the new content is smaller, padding is added.
* 3) A single write(2) call is used to replace the content of the file.
* 4) Later the file is truncated to the length of the new content.
*
* This way we are sure the file is left in a consistent state even if the
* process is stopped between any of the four operations.
*
* The function returns 0 on success, otherwise -1 is returned and errno
* set accordingly. */
int rewriteConfigOverwriteFile(char *configfile, sds content) {
int retval = 0;
int fd = open(configfile,O_RDWR|O_CREAT,0644);
int content_size = sdslen(content), padding = 0;
struct stat sb;
sds content_padded;
/* 1) Open the old file (or create a new one if it does not
* exist), get the size. */
if (fd == -1) return -1; /* errno set by open(). */
if (fstat(fd,&sb) == -1) {
close(fd);
return -1; /* errno set by fstat(). */
}
/* 2) Pad the content at least match the old file size. */
content_padded = sdsdup(content);
if (content_size < sb.st_size) {
/* If the old file was bigger, pad the content with
* a newline plus as many "#" chars as required. */
padding = sb.st_size - content_size;
content_padded = sdsgrowzero(content_padded,sb.st_size);
content_padded[content_size] = '\n';
memset(content_padded+content_size+1,'#',padding-1);
}
/* 3) Write the new content using a single write(2). */
if (write(fd,content_padded,strlen(content_padded)) == -1) {
retval = -1;
goto cleanup;
}
/* 4) Truncate the file to the right length if we used padding. */
if (padding) {
if (ftruncate(fd,content_size) == -1) {
/* Non critical error... */
}
}
cleanup:
sdsfree(content_padded);
close(fd);
return retval;
}
/* Rewrite the configuration file at "path".
* If the configuration file already exists, we try at best to retain comments
* and overall structure.
*
* Configuration parameters that are at their default value, unless already
* explicitly included in the old configuration file, are not rewritten.
*
* On error -1 is returned and errno is set accordingly, otherwise 0. */
int rewriteConfig(char *path) {
struct rewriteConfigState *state;
sds newcontent;
int retval;
/* Step 1: read the old config into our rewrite state. */
if ((state = rewriteConfigReadOldFile(path)) == NULL) return -1;
/* Step 2: rewrite every single option, replacing or appending it inside
* the rewrite state. */
/* TODO: Turn every default into a define, use it also in
* initServerConfig(). */
rewriteConfigYesNoOption(state,"daemonize",server.daemonize,0);
rewriteConfigStringOption(state,"pidfile",server.pidfile,REDIS_DEFAULT_PID_FILE);
rewriteConfigNumericalOption(state,"port",server.port,REDIS_SERVERPORT);
rewriteConfigBindOption(state);
rewriteConfigStringOption(state,"unixsocket",server.unixsocket,NULL);
rewriteConfigOctalOption(state,"unixsocketperm",server.unixsocketperm,REDIS_DEFAULT_UNIX_SOCKET_PERM);
rewriteConfigNumericalOption(state,"timeout",server.maxidletime,REDIS_MAXIDLETIME);
rewriteConfigNumericalOption(state,"tcp-keepalive",server.tcpkeepalive,REDIS_DEFAULT_TCP_KEEPALIVE);
rewriteConfigEnumOption(state,"loglevel",server.verbosity,
"debug", REDIS_DEBUG,
"verbose", REDIS_VERBOSE,
"notice", REDIS_NOTICE,
"warning", REDIS_WARNING,
NULL, REDIS_DEFAULT_VERBOSITY);
rewriteConfigStringOption(state,"logfile",server.logfile,REDIS_DEFAULT_LOGFILE);
rewriteConfigYesNoOption(state,"syslog-enabled",server.syslog_enabled,REDIS_DEFAULT_SYSLOG_ENABLED);
rewriteConfigStringOption(state,"syslog-ident",server.syslog_ident,REDIS_DEFAULT_SYSLOG_IDENT);
rewriteConfigSyslogfacilityOption(state);
rewriteConfigSaveOption(state);
rewriteConfigNumericalOption(state,"databases",server.dbnum,REDIS_DEFAULT_DBNUM);
rewriteConfigYesNoOption(state,"stop-writes-on-bgsave-error",server.stop_writes_on_bgsave_err,REDIS_DEFAULT_STOP_WRITES_ON_BGSAVE_ERROR);
rewriteConfigYesNoOption(state,"rdbcompression",server.rdb_compression,REDIS_DEFAULT_RDB_COMPRESSION);
rewriteConfigYesNoOption(state,"rdbchecksum",server.rdb_checksum,REDIS_DEFAULT_RDB_CHECKSUM);
rewriteConfigStringOption(state,"dbfilename",server.rdb_filename,REDIS_DEFAULT_RDB_FILENAME);
rewriteConfigDirOption(state);
rewriteConfigSlaveofOption(state);
rewriteConfigStringOption(state,"masterauth",server.masterauth,NULL);
rewriteConfigYesNoOption(state,"slave-serve-stale-data",server.repl_serve_stale_data,REDIS_DEFAULT_SLAVE_SERVE_STALE_DATA);
rewriteConfigYesNoOption(state,"slave-read-only",server.repl_slave_ro,REDIS_DEFAULT_SLAVE_READ_ONLY);
rewriteConfigNumericalOption(state,"repl-ping-slave-period",server.repl_ping_slave_period,REDIS_REPL_PING_SLAVE_PERIOD);
rewriteConfigNumericalOption(state,"repl-timeout",server.repl_timeout,REDIS_REPL_TIMEOUT);
rewriteConfigBytesOption(state,"repl-backlog-size",server.repl_backlog_size,REDIS_DEFAULT_REPL_BACKLOG_SIZE);
rewriteConfigBytesOption(state,"repl-backlog-ttl",server.repl_backlog_time_limit,REDIS_DEFAULT_REPL_BACKLOG_TIME_LIMIT);
rewriteConfigYesNoOption(state,"repl-disable-tcp-nodelay",server.repl_disable_tcp_nodelay,REDIS_DEFAULT_REPL_DISABLE_TCP_NODELAY);
rewriteConfigNumericalOption(state,"slave-priority",server.slave_priority,REDIS_DEFAULT_SLAVE_PRIORITY);
rewriteConfigStringOption(state,"requirepass",server.requirepass,NULL);
rewriteConfigNumericalOption(state,"maxclients",server.maxclients,REDIS_MAX_CLIENTS);
rewriteConfigBytesOption(state,"maxmemory",server.maxmemory,REDIS_DEFAULT_MAXMEMORY);
rewriteConfigEnumOption(state,"maxmemory-policy",server.maxmemory_policy,
"volatile-lru", REDIS_MAXMEMORY_VOLATILE_LRU,
"allkeys-lru", REDIS_MAXMEMORY_ALLKEYS_LRU,
"volatile-random", REDIS_MAXMEMORY_VOLATILE_RANDOM,
"allkeys-random", REDIS_MAXMEMORY_ALLKEYS_RANDOM,
"volatile-ttl", REDIS_MAXMEMORY_VOLATILE_TTL,
"noeviction", REDIS_MAXMEMORY_NO_EVICTION,
NULL, REDIS_DEFAULT_MAXMEMORY_POLICY);
rewriteConfigNumericalOption(state,"maxmemory-samples",server.maxmemory_samples,REDIS_DEFAULT_MAXMEMORY_SAMPLES);
rewriteConfigAppendonlyOption(state);
rewriteConfigEnumOption(state,"appendfsync",server.aof_fsync,
"everysec", AOF_FSYNC_EVERYSEC,
"always", AOF_FSYNC_ALWAYS,
"no", AOF_FSYNC_NO,
NULL, REDIS_DEFAULT_AOF_FSYNC);
rewriteConfigYesNoOption(state,"no-appendfsync-on-rewrite",server.aof_no_fsync_on_rewrite,REDIS_DEFAULT_AOF_NO_FSYNC_ON_REWRITE);
rewriteConfigNumericalOption(state,"auto-aof-rewrite-percentage",server.aof_rewrite_perc,REDIS_AOF_REWRITE_PERC);
rewriteConfigBytesOption(state,"auto-aof-rewrite-min-size",server.aof_rewrite_min_size,REDIS_AOF_REWRITE_MIN_SIZE);
rewriteConfigNumericalOption(state,"lua-time-limit",server.lua_time_limit,REDIS_LUA_TIME_LIMIT);
rewriteConfigYesNoOption(state,"cluster-enabled",server.cluster_enabled,0);
rewriteConfigStringOption(state,"cluster-config-file",server.cluster_configfile,REDIS_DEFAULT_CLUSTER_CONFIG_FILE);
rewriteConfigNumericalOption(state,"cluster-node-timeout",server.cluster_node_timeout,REDIS_CLUSTER_DEFAULT_NODE_TIMEOUT);
rewriteConfigNumericalOption(state,"slowlog-log-slower-than",server.slowlog_log_slower_than,REDIS_SLOWLOG_LOG_SLOWER_THAN);
rewriteConfigNumericalOption(state,"slowlog-max-len",server.slowlog_max_len,REDIS_SLOWLOG_MAX_LEN);
rewriteConfigNotifykeyspaceeventsOption(state);
rewriteConfigNumericalOption(state,"hash-max-ziplist-entries",server.hash_max_ziplist_entries,REDIS_HASH_MAX_ZIPLIST_ENTRIES);
rewriteConfigNumericalOption(state,"hash-max-ziplist-value",server.hash_max_ziplist_value,REDIS_HASH_MAX_ZIPLIST_VALUE);
rewriteConfigNumericalOption(state,"list-max-ziplist-entries",server.list_max_ziplist_entries,REDIS_LIST_MAX_ZIPLIST_ENTRIES);
rewriteConfigNumericalOption(state,"list-max-ziplist-value",server.list_max_ziplist_value,REDIS_LIST_MAX_ZIPLIST_VALUE);
rewriteConfigNumericalOption(state,"set-max-intset-entries",server.set_max_intset_entries,REDIS_SET_MAX_INTSET_ENTRIES);
rewriteConfigNumericalOption(state,"zset-max-ziplist-entries",server.zset_max_ziplist_entries,REDIS_ZSET_MAX_ZIPLIST_ENTRIES);
rewriteConfigNumericalOption(state,"zset-max-ziplist-value",server.zset_max_ziplist_value,REDIS_ZSET_MAX_ZIPLIST_VALUE);
rewriteConfigYesNoOption(state,"activerehashing",server.activerehashing,REDIS_DEFAULT_ACTIVE_REHASHING);
rewriteConfigClientoutputbufferlimitOption(state);
rewriteConfigNumericalOption(state,"hz",server.hz,REDIS_DEFAULT_HZ);
rewriteConfigYesNoOption(state,"aof-rewrite-incremental-fsync",server.aof_rewrite_incremental_fsync,REDIS_DEFAULT_AOF_REWRITE_INCREMENTAL_FSYNC);
/* Step 3: remove all the orphaned lines in the old file, that is, lines
* that were used by a config option and are no longer used, like in case
* of multiple "save" options or duplicated options. */
rewriteConfigRemoveOrphaned(state);
/* Step 4: generate a new configuration file from the modified state
* and write it into the original file. */
newcontent = rewriteConfigGetContentFromState(state);
retval = rewriteConfigOverwriteFile(server.configfile,newcontent);
sdsfree(newcontent);
rewriteConfigReleaseState(state);
return retval;
}
/*-----------------------------------------------------------------------------
* CONFIG command entry point
*----------------------------------------------------------------------------*/
void configCommand(redisClient *c) {
if (!strcasecmp(c->argv[1]->ptr,"set")) {
if (c->argc != 4) goto badarity;
configSetCommand(c);
} else if (!strcasecmp(c->argv[1]->ptr,"get")) {
if (c->argc != 3) goto badarity;
configGetCommand(c);
} else if (!strcasecmp(c->argv[1]->ptr,"resetstat")) {
if (c->argc != 2) goto badarity;
server.stat_keyspace_hits = 0;
server.stat_keyspace_misses = 0;
server.stat_numcommands = 0;
server.stat_numconnections = 0;
server.stat_expiredkeys = 0;
server.stat_rejected_conn = 0;
server.stat_fork_time = 0;
server.aof_delayed_fsync = 0;
resetCommandTableStats();
addReply(c,shared.ok);
} else if (!strcasecmp(c->argv[1]->ptr,"rewrite")) {
if (c->argc != 2) goto badarity;
if (server.configfile == NULL) {
addReplyError(c,"The server is running without a config file");
return;
}
if (rewriteConfig(server.configfile) == -1) {
addReplyErrorFormat(c,"Rewriting config file: %s", strerror(errno));
} else {
addReply(c,shared.ok);
}
} else {
addReplyError(c,
"CONFIG subcommand must be one of GET, SET, RESETSTAT");
}
return;
badarity:
addReplyErrorFormat(c,"Wrong number of arguments for CONFIG %s",
(char*) c->argv[1]->ptr);
}
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