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Remove HyperLogLog type checking duplicated code.

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This commit is contained in:
antirez 2014-04-03 13:20:34 +02:00
parent aaaed66c56
commit ce637b2fef
1 changed files with 21 additions and 45 deletions
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66
src/hyperloglog.c
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@ -456,6 +456,23 @@ robj *createHLLObject(void) {
return o;
}
/* Check if the object is a String of REDIS_HLL_SIZE bytes.
* Return REDIS_OK if this is true, otherwise reply to the client
* with an error and return REDIS_ERR. */
int isHLLObjectOrReply(redisClient *c, robj *o) {
/* Key exists, check type */
if (checkType(c,o,REDIS_STRING))
return REDIS_ERR; /* Error already sent. */
/* If this is a string representing an HLL, the size should match
* exactly. */
if (stringObjectLen(o) != REDIS_HLL_SIZE) {
addReplyErrorFormat(c, "Key is not a valid HyperLogLog string value.");
return REDIS_ERR;
}
return REDIS_OK;
}
/* PFADD var ele ele ele ... ele => :0 or :1 */
void pfaddCommand(redisClient *c) {
robj *o = lookupKeyWrite(c->db,c->argv[1]);
@ -470,18 +487,7 @@ void pfaddCommand(redisClient *c) {
dbAdd(c->db,c->argv[1],o);
updated++;
} else {
/* Key exists, check type */
if (checkType(c,o,REDIS_STRING))
return;
/* If this is a string representing an HLL, the size should match
* exactly. */
if (stringObjectLen(o) != REDIS_HLL_SIZE) {
addReplyErrorFormat(c,
"PFADD target key must contain a %d bytes string.",
REDIS_HLL_SIZE);
return;
}
if (isHLLObjectOrReply(c,o) != REDIS_OK) return;
o = dbUnshareStringValue(c->db,c->argv[1],o);
}
/* Perform the low level ADD operation for every element. */
@ -514,18 +520,7 @@ void pfcountCommand(redisClient *c) {
* we would have a key as HLLADD creates it as a side effect. */
addReply(c,shared.czero);
} else {
/* Key exists, check type */
if (checkType(c,o,REDIS_STRING))
return;
/* If this is a string representing an HLL, the size should match
* exactly. */
if (stringObjectLen(o) != REDIS_HLL_SIZE) {
addReplyErrorFormat(c,
"PFCOUNT target key must contain a %d bytes string.",
REDIS_HLL_SIZE);
return;
}
if (isHLLObjectOrReply(c,o) != REDIS_OK) return;
/* Check if the cached cardinality is valid. */
registers = o->ptr;
@ -580,15 +575,7 @@ void pfmergeCommand(redisClient *c) {
/* Check type and size. */
robj *o = lookupKeyRead(c->db,c->argv[j]);
if (o == NULL) continue; /* Assume empty HLL for non existing var. */
if (checkType(c,o,REDIS_STRING))
return;
if (stringObjectLen(o) != REDIS_HLL_SIZE) {
addReplyErrorFormat(c,
"PFADD target key must contain a %d bytes string.",
REDIS_HLL_SIZE);
return;
}
if (isHLLObjectOrReply(c,o) != REDIS_OK) return;
/* Merge with this HLL with our 'max' HHL by setting max[i]
* to MAX(max[i],hll[i]). */
@ -716,18 +703,7 @@ void pfgetregCommand(redisClient *c) {
addReplyError(c,"The specified key does not exist");
return;
} else {
/* Key exists, check type */
if (checkType(c,o,REDIS_STRING))
return;
/* If this is a string representing an HLL, the size should match
* exactly. */
if (stringObjectLen(o) != REDIS_HLL_SIZE) {
addReplyErrorFormat(c,
"PFCOUNT target key must contain a %d bytes string.",
REDIS_HLL_SIZE);
return;
}
if (isHLLObjectOrReply(c,o) != REDIS_OK) return;
registers = o->ptr;
addReplyMultiBulkLen(c,REDIS_HLL_REGISTERS);