mirror of
https://github.com/fluencelabs/redis
synced 2025-06-22 21:41:32 +00:00
redis.c split into many different C files.
networking related stuff moved into networking.c moved more code more work on layout of source code SDS instantaneuos memory saving. By Pieter and Salvatore at VMware ;) cleanly compiling again after the first split, now splitting it in more C files moving more things around... work in progress split replication code splitting more Sets split Hash split replication split even more splitting more splitting minor change
This commit is contained in:
antirez
259
src/pubsub.c
Normal file
259
src/pubsub.c
Normal file
@ -0,0 +1,259 @@
|
||||
#include "redis.h"
|
||||
|
||||
void freePubsubPattern(void *p) {
|
||||
pubsubPattern *pat = p;
|
||||
|
||||
decrRefCount(pat->pattern);
|
||||
zfree(pat);
|
||||
}
|
||||
|
||||
int listMatchPubsubPattern(void *a, void *b) {
|
||||
pubsubPattern *pa = a, *pb = b;
|
||||
|
||||
return (pa->client == pb->client) &&
|
||||
(equalStringObjects(pa->pattern,pb->pattern));
|
||||
}
|
||||
|
||||
/* Subscribe a client to a channel. Returns 1 if the operation succeeded, or
|
||||
* 0 if the client was already subscribed to that channel. */
|
||||
int pubsubSubscribeChannel(redisClient *c, robj *channel) {
|
||||
struct dictEntry *de;
|
||||
list *clients = NULL;
|
||||
int retval = 0;
|
||||
|
||||
/* Add the channel to the client -> channels hash table */
|
||||
if (dictAdd(c->pubsub_channels,channel,NULL) == DICT_OK) {
|
||||
retval = 1;
|
||||
incrRefCount(channel);
|
||||
/* Add the client to the channel -> list of clients hash table */
|
||||
de = dictFind(server.pubsub_channels,channel);
|
||||
if (de == NULL) {
|
||||
clients = listCreate();
|
||||
dictAdd(server.pubsub_channels,channel,clients);
|
||||
incrRefCount(channel);
|
||||
} else {
|
||||
clients = dictGetEntryVal(de);
|
||||
}
|
||||
listAddNodeTail(clients,c);
|
||||
}
|
||||
/* Notify the client */
|
||||
addReply(c,shared.mbulk3);
|
||||
addReply(c,shared.subscribebulk);
|
||||
addReplyBulk(c,channel);
|
||||
addReplyLongLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Unsubscribe a client from a channel. Returns 1 if the operation succeeded, or
|
||||
* 0 if the client was not subscribed to the specified channel. */
|
||||
int pubsubUnsubscribeChannel(redisClient *c, robj *channel, int notify) {
|
||||
struct dictEntry *de;
|
||||
list *clients;
|
||||
listNode *ln;
|
||||
int retval = 0;
|
||||
|
||||
/* Remove the channel from the client -> channels hash table */
|
||||
incrRefCount(channel); /* channel may be just a pointer to the same object
|
||||
we have in the hash tables. Protect it... */
|
||||
if (dictDelete(c->pubsub_channels,channel) == DICT_OK) {
|
||||
retval = 1;
|
||||
/* Remove the client from the channel -> clients list hash table */
|
||||
de = dictFind(server.pubsub_channels,channel);
|
||||
redisAssert(de != NULL);
|
||||
clients = dictGetEntryVal(de);
|
||||
ln = listSearchKey(clients,c);
|
||||
redisAssert(ln != NULL);
|
||||
listDelNode(clients,ln);
|
||||
if (listLength(clients) == 0) {
|
||||
/* Free the list and associated hash entry at all if this was
|
||||
* the latest client, so that it will be possible to abuse
|
||||
* Redis PUBSUB creating millions of channels. */
|
||||
dictDelete(server.pubsub_channels,channel);
|
||||
}
|
||||
}
|
||||
/* Notify the client */
|
||||
if (notify) {
|
||||
addReply(c,shared.mbulk3);
|
||||
addReply(c,shared.unsubscribebulk);
|
||||
addReplyBulk(c,channel);
|
||||
addReplyLongLong(c,dictSize(c->pubsub_channels)+
|
||||
listLength(c->pubsub_patterns));
|
||||
|
||||
}
|
||||
decrRefCount(channel); /* it is finally safe to release it */
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Subscribe a client to a pattern. Returns 1 if the operation succeeded, or 0 if the clinet was already subscribed to that pattern. */
|
||||
int pubsubSubscribePattern(redisClient *c, robj *pattern) {
|
||||
int retval = 0;
|
||||
|
||||
if (listSearchKey(c->pubsub_patterns,pattern) == NULL) {
|
||||
retval = 1;
|
||||
pubsubPattern *pat;
|
||||
listAddNodeTail(c->pubsub_patterns,pattern);
|
||||
incrRefCount(pattern);
|
||||
pat = zmalloc(sizeof(*pat));
|
||||
pat->pattern = getDecodedObject(pattern);
|
||||
pat->client = c;
|
||||
listAddNodeTail(server.pubsub_patterns,pat);
|
||||
}
|
||||
/* Notify the client */
|
||||
addReply(c,shared.mbulk3);
|
||||
addReply(c,shared.psubscribebulk);
|
||||
addReplyBulk(c,pattern);
|
||||
addReplyLongLong(c,dictSize(c->pubsub_channels)+listLength(c->pubsub_patterns));
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Unsubscribe a client from a channel. Returns 1 if the operation succeeded, or
|
||||
* 0 if the client was not subscribed to the specified channel. */
|
||||
int pubsubUnsubscribePattern(redisClient *c, robj *pattern, int notify) {
|
||||
listNode *ln;
|
||||
pubsubPattern pat;
|
||||
int retval = 0;
|
||||
|
||||
incrRefCount(pattern); /* Protect the object. May be the same we remove */
|
||||
if ((ln = listSearchKey(c->pubsub_patterns,pattern)) != NULL) {
|
||||
retval = 1;
|
||||
listDelNode(c->pubsub_patterns,ln);
|
||||
pat.client = c;
|
||||
pat.pattern = pattern;
|
||||
ln = listSearchKey(server.pubsub_patterns,&pat);
|
||||
listDelNode(server.pubsub_patterns,ln);
|
||||
}
|
||||
/* Notify the client */
|
||||
if (notify) {
|
||||
addReply(c,shared.mbulk3);
|
||||
addReply(c,shared.punsubscribebulk);
|
||||
addReplyBulk(c,pattern);
|
||||
addReplyLongLong(c,dictSize(c->pubsub_channels)+
|
||||
listLength(c->pubsub_patterns));
|
||||
}
|
||||
decrRefCount(pattern);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Unsubscribe from all the channels. Return the number of channels the
|
||||
* client was subscribed from. */
|
||||
int pubsubUnsubscribeAllChannels(redisClient *c, int notify) {
|
||||
dictIterator *di = dictGetIterator(c->pubsub_channels);
|
||||
dictEntry *de;
|
||||
int count = 0;
|
||||
|
||||
while((de = dictNext(di)) != NULL) {
|
||||
robj *channel = dictGetEntryKey(de);
|
||||
|
||||
count += pubsubUnsubscribeChannel(c,channel,notify);
|
||||
}
|
||||
dictReleaseIterator(di);
|
||||
return count;
|
||||
}
|
||||
|
||||
/* Unsubscribe from all the patterns. Return the number of patterns the
|
||||
* client was subscribed from. */
|
||||
int pubsubUnsubscribeAllPatterns(redisClient *c, int notify) {
|
||||
listNode *ln;
|
||||
listIter li;
|
||||
int count = 0;
|
||||
|
||||
listRewind(c->pubsub_patterns,&li);
|
||||
while ((ln = listNext(&li)) != NULL) {
|
||||
robj *pattern = ln->value;
|
||||
|
||||
count += pubsubUnsubscribePattern(c,pattern,notify);
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
/* Publish a message */
|
||||
int pubsubPublishMessage(robj *channel, robj *message) {
|
||||
int receivers = 0;
|
||||
struct dictEntry *de;
|
||||
listNode *ln;
|
||||
listIter li;
|
||||
|
||||
/* Send to clients listening for that channel */
|
||||
de = dictFind(server.pubsub_channels,channel);
|
||||
if (de) {
|
||||
list *list = dictGetEntryVal(de);
|
||||
listNode *ln;
|
||||
listIter li;
|
||||
|
||||
listRewind(list,&li);
|
||||
while ((ln = listNext(&li)) != NULL) {
|
||||
redisClient *c = ln->value;
|
||||
|
||||
addReply(c,shared.mbulk3);
|
||||
addReply(c,shared.messagebulk);
|
||||
addReplyBulk(c,channel);
|
||||
addReplyBulk(c,message);
|
||||
receivers++;
|
||||
}
|
||||
}
|
||||
/* Send to clients listening to matching channels */
|
||||
if (listLength(server.pubsub_patterns)) {
|
||||
listRewind(server.pubsub_patterns,&li);
|
||||
channel = getDecodedObject(channel);
|
||||
while ((ln = listNext(&li)) != NULL) {
|
||||
pubsubPattern *pat = ln->value;
|
||||
|
||||
if (stringmatchlen((char*)pat->pattern->ptr,
|
||||
sdslen(pat->pattern->ptr),
|
||||
(char*)channel->ptr,
|
||||
sdslen(channel->ptr),0)) {
|
||||
addReply(pat->client,shared.mbulk4);
|
||||
addReply(pat->client,shared.pmessagebulk);
|
||||
addReplyBulk(pat->client,pat->pattern);
|
||||
addReplyBulk(pat->client,channel);
|
||||
addReplyBulk(pat->client,message);
|
||||
receivers++;
|
||||
}
|
||||
}
|
||||
decrRefCount(channel);
|
||||
}
|
||||
return receivers;
|
||||
}
|
||||
|
||||
void subscribeCommand(redisClient *c) {
|
||||
int j;
|
||||
|
||||
for (j = 1; j < c->argc; j++)
|
||||
pubsubSubscribeChannel(c,c->argv[j]);
|
||||
}
|
||||
|
||||
void unsubscribeCommand(redisClient *c) {
|
||||
if (c->argc == 1) {
|
||||
pubsubUnsubscribeAllChannels(c,1);
|
||||
return;
|
||||
} else {
|
||||
int j;
|
||||
|
||||
for (j = 1; j < c->argc; j++)
|
||||
pubsubUnsubscribeChannel(c,c->argv[j],1);
|
||||
}
|
||||
}
|
||||
|
||||
void psubscribeCommand(redisClient *c) {
|
||||
int j;
|
||||
|
||||
for (j = 1; j < c->argc; j++)
|
||||
pubsubSubscribePattern(c,c->argv[j]);
|
||||
}
|
||||
|
||||
void punsubscribeCommand(redisClient *c) {
|
||||
if (c->argc == 1) {
|
||||
pubsubUnsubscribeAllPatterns(c,1);
|
||||
return;
|
||||
} else {
|
||||
int j;
|
||||
|
||||
for (j = 1; j < c->argc; j++)
|
||||
pubsubUnsubscribePattern(c,c->argv[j],1);
|
||||
}
|
||||
}
|
||||
|
||||
void publishCommand(redisClient *c) {
|
||||
int receivers = pubsubPublishMessage(c->argv[1],c->argv[2]);
|
||||
addReplyLongLong(c,receivers);
|
||||
}
|
||||
Reference in New Issue
Block a user