//tair's new expire generic Command
//something interesting with tair's expire protocol
//if seconds < 0 then
//we consider that you don't care with expire,will nothing to do
//else if seconds == 0 then
//we consider that you want remove the existing timeout on key(just as redis's persist)
//else if seconds > 0 && seconds <= now time then
//we consider that you give us duration, like 10s(just as redis's expire)
//else if seconds > now time then
//we conssider that you give us UNIX timestamp (seconds since January 1, 1970)(just as redis's expireat)
//so it's equal persist + expire + expireat
void expireXGenericCommand(redisClient *c, robj *key, robj *param) {
dictEntry *de;
long seconds;
time_t when;
if (getLongFromObject(param, &seconds) != REDIS_OK) {
c->returncode = REDIS_ERR_IS_NOT_INTEGER;
return;
}
de = dictFind(c->db->dict,key->ptr);
if (de == NULL) {
c->returncode = REDIS_OK_NOT_EXIST;
return;
}
if (seconds > 0) {
time_t now = time(NULL);
if (seconds <= now) {
when = now+seconds;
} else {
when = seconds;
}
setExpire(c->db,key,when);
c->server->dirty++;
} else if(seconds == 0 && removeExpire(c->db, c->argv[1])) {
c->server->dirty++;
}
c->returncode = REDIS_OK;
return;
}
void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expire) {
int retval;
long seconds = 0; /* initialized to avoid an harmness warning */
robj *oldval;
c->returncode = REDIS_ERR;
if (expire) {
if (getLongFromObject(expire, &seconds) != REDIS_OK) {
c->returncode = REDIS_ERR_IS_NOT_INTEGER;
return;
}
}
oldval = lookupKeyWriteWithVersion(c->db,key,&(c->version)); /* Force expire of old key if needed */
if(oldval != NULL) {
if(checkType(c, oldval, REDIS_STRING)) {
c->returncode = REDIS_ERR_WRONG_TYPE_ERROR;
return;
}
uint16_t version = sdsversion(key->ptr);
if(c->version_care && version != 0 && version != c->version) {
c->returncode = REDIS_ERR_VERSION_ERROR;
return;
} else {
sdsversion_change(key->ptr, c->version);
}
} else {
sdsversion_change(key->ptr, 0);
}
if(c->version_care) {
sdsversion_add(key->ptr, 1);
}
retval = dbAdd(c->db,key,val);
if (retval == REDIS_ERR) {
if (!nx) {
dbSuperReplace(c->db,key,val);
incrRefCount(val);
} else {
c->returncode = REDIS_OK_BUT_ALREADY_EXIST;
return;
}
} else {
incrRefCount(val);
}
c->db->dirty++;
if (expire) {
setExpire(c->db,key,seconds);
} else if(c->expiretime == 0) {
removeXExpire(c->db, key);
}
c->returncode = REDIS_OK;
}