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Redis sentinel kill pubsub client connections as well

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When a redis instance becomes a slave, sentinel also kills pubsub
clients.

Closes #6545
This commit is contained in:
Patrick Valsecchi 2019-11-07 08:49:19 +01:00
parent 0f026af185
commit 9593ffde2e
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GPG Key ID: 18381B1686B5AA93
1 changed files with 15 additions and 5 deletions
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20
src/sentinel.c
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@ -465,6 +465,12 @@ struct redisCommand sentinelcmds[] = {
{"hello",helloCommand,-2,"no-script fast",0,NULL,0,0,0,0,0}
};
/* List of client types that are killed when an instance becomes a slave */
const char* killedClientTypes[] = {
"normal",
"pubsub"
};
/* This function overwrites a few normal Redis config default with Sentinel
* specific defaults. */
void initSentinelConfig(void) {
@ -3949,6 +3955,7 @@ char *sentinelGetLeader(sentinelRedisInstance *master, uint64_t epoch) {
int sentinelSendSlaveOf(sentinelRedisInstance *ri, char *host, int port) {
char portstr[32];
int retval;
unsigned int curType;
ll2string(portstr,sizeof(portstr),port);
@ -3993,11 +4000,14 @@ int sentinelSendSlaveOf(sentinelRedisInstance *ri, char *host, int port) {
* an issue because CLIENT is variadic command, so Redis will not
* recognized as a syntax error, and the transaction will not fail (but
* only the unsupported command will fail). */
retval = redisAsyncCommand(ri->link->cc,
sentinelDiscardReplyCallback, ri, "%s KILL TYPE normal",
sentinelInstanceMapCommand(ri,"CLIENT"));
if (retval == C_ERR) return retval;
ri->link->pending_commands++;
for (curType = 0; curType < sizeof(killedClientTypes)/sizeof(killedClientTypes[0]); ++curType) {
retval = redisAsyncCommand(ri->link->cc,
sentinelDiscardReplyCallback, ri, "%s KILL TYPE %s",
sentinelInstanceMapCommand(ri,"CLIENT"),
killedClientTypes[curType]);
if (retval == C_ERR) return retval;
ri->link->pending_commands++;
}
retval = redisAsyncCommand(ri->link->cc,
sentinelDiscardReplyCallback, ri, "%s",