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Streams: AOF rewriting + minor iterator improvements.

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antirez
2017-09-15 12:37:04 +02:00
parent 01ea018c40
commit 26d4f8e3ec
2 changed files with 42 additions and 5 deletions
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33
src/aof.c
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@ -1031,6 +1031,37 @@ int rewriteHashObject(rio *r, robj *key, robj *o) {
return 1;
}
/* Emit the commands needed to rebuild a stream object.
* The function returns 0 on error, 1 on success. */
int rewriteStreamObject(rio *r, robj *key, robj *o) {
streamIterator si;
streamIteratorStart(&si,o->ptr,NULL,NULL);
streamID id;
int64_t numfields;
while(streamIteratorGetID(&si,&id,&numfields)) {
/* Emit a two elements array for each item. The first is
* the ID, the second is an array of field-value pairs. */
/* Emit the XADD <key> <id> ...fields... command. */
if (rioWriteBulkCount(r,'*',3+numfields*2) == 0) return 0;
if (rioWriteBulkString(r,"XADD",4) == 0) return 0;
if (rioWriteBulkObject(r,key) == 0) return 0;
sds replyid = sdscatfmt(sdsempty(),"%U.%U",id.ms,id.seq);
if (rioWriteBulkString(r,replyid,sdslen(replyid)) == 0) return 0;
sdsfree(replyid);
while(numfields--) {
unsigned char *field, *value;
int64_t field_len, value_len;
streamIteratorGetField(&si,&field,&value,&field_len,&value_len);
if (rioWriteBulkString(r,(char*)field,field_len) == 0) return 0;
if (rioWriteBulkString(r,(char*)value,value_len) == 0) return 0;
}
}
streamIteratorStop(&si);
return 1;
}
/* Call the module type callback in order to rewrite a data type
* that is exported by a module and is not handled by Redis itself.
* The function returns 0 on error, 1 on success. */
@ -1111,6 +1142,8 @@ int rewriteAppendOnlyFileRio(rio *aof) {
if (rewriteSortedSetObject(aof,&key,o) == 0) goto werr;
} else if (o->type == OBJ_HASH) {
if (rewriteHashObject(aof,&key,o) == 0) goto werr;
} else if (o->type == OBJ_STREAM) {
if (rewriteStreamObject(aof,&key,o) == 0) goto werr;
} else if (o->type == OBJ_MODULE) {
if (rewriteModuleObject(aof,&key,o) == 0) goto werr;
} else {