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Keyspace events: it is now possible to select subclasses of events.

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When keyspace events are enabled, the overhead is not sever but
noticeable, so this commit introduces the ability to select subclasses
of events in order to avoid to generate events the user is not
interested in.

The events can be selected using redis.conf or CONFIG SET / GET.
This commit is contained in:
antirez
2013-01-25 13:19:08 +01:00
parent 6de052cd77
commit b9bc4f9132
14 changed files with 237 additions and 108 deletions
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24
src/config.c
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@ -385,9 +385,13 @@ void loadServerConfigFromString(char *config) {
} else if (!strcasecmp(argv[0],"slave-priority") && argc == 2) {
server.slave_priority = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"notify-keyspace-events") && argc == 2) {
if ((server.notify_keyspace_events = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
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. */
@ -707,10 +711,10 @@ void configSetCommand(redisClient *c) {
if (yn == -1) goto badfmt;
server.rdb_compression = yn;
} else if (!strcasecmp(c->argv[2]->ptr,"notify-keyspace-events")) {
int yn = yesnotoi(o->ptr);
int flags = keyspaceEventsStringToFlags(o->ptr);
if (yn == -1) goto badfmt;
server.notify_keyspace_events = yn;
if (flags == -1) goto badfmt;
server.notify_keyspace_events = flags;
} else if (!strcasecmp(c->argv[2]->ptr,"slave-priority")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
ll <= 0) goto badfmt;
@ -820,7 +824,6 @@ void configGetCommand(redisClient *c) {
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("notify-keyspace-events", server.notify_keyspace_events);
/* Everything we can't handle with macros follows. */
@ -935,6 +938,15 @@ void configGetCommand(redisClient *c) {
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++;
}
setDeferredMultiBulkLength(c,replylen,matches*2);
}