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Added mechanism for choosing slave for a query based on the current load in all connected slaves. Counting operations is not correctly done here. Reading values and choosing accordingly is done.

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Fixed several things in session command reply processing.
This commit is contained in:
VilhoRaatikka
2014-06-29 22:21:30 +03:00
parent 20637ee224
commit fcf67716fd
10 changed files with 593 additions and 297 deletions
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24
server/core/buffer.c
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@ -152,6 +152,7 @@ GWBUF *gwbuf_clone_portion(
}
atomic_add(&buf->sbuf->refcount, 1);
clonebuf->sbuf = buf->sbuf;
clonebuf->gwbuf_type = buf->gwbuf_type; /*< clone info bits too */
clonebuf->start = (void *)((char*)buf->start)+start_offset;
clonebuf->end = (void *)((char *)clonebuf->start)+length;
clonebuf->gwbuf_type = buf->gwbuf_type; /*< clone the type for now */
@ -232,12 +233,12 @@ GWBUF *ptr = head;
if (!head)
return tail;
CHK_GWBUF(head);
CHK_GWBUF(tail);
while (ptr->next)
{
ptr = ptr->next;
}
ptr->next = tail;
return head;
}
@ -316,27 +317,12 @@ gwbuf_trim(GWBUF *buf, unsigned int n_bytes)
return buf;
}
bool gwbuf_set_type(
void gwbuf_set_type(
GWBUF* buf,
gwbuf_type_t type)
{
bool succp;
CHK_GWBUF(buf);
switch (type) {
case GWBUF_TYPE_MYSQL:
case GWBUF_TYPE_PLAINSQL:
case GWBUF_TYPE_UNDEFINED:
case GWBUF_TYPE_SINGLE_STMT: /*< buffer contains one stmt */
buf->gwbuf_type |= type;
succp = true;
break;
default:
succp = false;
break;
}
ss_dassert(succp);
return succp;
CHK_GWBUF(buf);
buf->gwbuf_type |= type;
}