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Hash type AOF rewrite using HMSET.

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This commit is contained in:
antirez 2011-12-12 17:39:23 +01:00
parent 7df9b1412b
commit 54ecc0e777
1 changed files with 51 additions and 31 deletions
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82
src/aof.c
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@ -595,6 +595,56 @@ int rewriteSortedSetObject(rio *r, robj *key, robj *o) {
return 1;
}
/* Emit the commands needed to rebuild a hash object.
* The function returns 0 on error, 1 on success. */
int rewriteHashObject(rio *r, robj *key, robj *o) {
long long count = 0, items = hashTypeLength(o);
if (o->encoding == REDIS_ENCODING_ZIPMAP) {
unsigned char *p = zipmapRewind(o->ptr);
unsigned char *field, *val;
unsigned int flen, vlen;
while((p = zipmapNext(p,&field,&flen,&val,&vlen)) != NULL) {
if (count == 0) {
int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
if (rioWriteBulkObject(r,key) == 0) return 0;
}
if (rioWriteBulkString(r,(char*)field,flen) == 0) return 0;
if (rioWriteBulkString(r,(char*)val,vlen) == 0) return 0;
if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
items--;
}
} else {
dictIterator *di = dictGetIterator(o->ptr);
dictEntry *de;
while((de = dictNext(di)) != NULL) {
robj *field = dictGetKey(de);
robj *val = dictGetVal(de);
if (count == 0) {
int cmd_items = (items > REDIS_AOFREWRITE_ITEMS_PER_CMD) ?
REDIS_AOFREWRITE_ITEMS_PER_CMD : items;
if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
if (rioWriteBulkObject(r,key) == 0) return 0;
}
if (rioWriteBulkObject(r,field) == 0) return 0;
if (rioWriteBulkObject(r,val) == 0) return 0;
if (++count == REDIS_AOFREWRITE_ITEMS_PER_CMD) count = 0;
items--;
}
dictReleaseIterator(di);
}
return 1;
}
/* Write a sequence of commands able to fully rebuild the dataset into
* "filename". Used both by REWRITEAOF and BGREWRITEAOF.
*
@ -663,37 +713,7 @@ int rewriteAppendOnlyFile(char *filename) {
} else if (o->type == REDIS_ZSET) {
if (rewriteSortedSetObject(&aof,&key,o) == 0) goto werr;
} else if (o->type == REDIS_HASH) {
char cmd[]="*4\r\n$4\r\nHSET\r\n";
/* Emit the HSETs needed to rebuild the hash */
if (o->encoding == REDIS_ENCODING_ZIPMAP) {
unsigned char *p = zipmapRewind(o->ptr);
unsigned char *field, *val;
unsigned int flen, vlen;
while((p = zipmapNext(p,&field,&flen,&val,&vlen)) != NULL) {
if (rioWrite(&aof,cmd,sizeof(cmd)-1) == 0) goto werr;
if (rioWriteBulkObject(&aof,&key) == 0) goto werr;
if (rioWriteBulkString(&aof,(char*)field,flen) == 0)
goto werr;
if (rioWriteBulkString(&aof,(char*)val,vlen) == 0)
goto werr;
}
} else {
dictIterator *di = dictGetIterator(o->ptr);
dictEntry *de;
while((de = dictNext(di)) != NULL) {
robj *field = dictGetKey(de);
robj *val = dictGetVal(de);
if (rioWrite(&aof,cmd,sizeof(cmd)-1) == 0) goto werr;
if (rioWriteBulkObject(&aof,&key) == 0) goto werr;
if (rioWriteBulkObject(&aof,field) == 0) goto werr;
if (rioWriteBulkObject(&aof,val) == 0) goto werr;
}
dictReleaseIterator(di);
}
if (rewriteHashObject(&aof,&key,o) == 0) goto werr;
} else {
redisPanic("Unknown object type");
}