static enum req_fsm_nxt
cnt_fetch(struct worker *wrk, struct req *req)
{
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
CHECK_OBJ_NOTNULL(req->objcore, OBJCORE_MAGIC);
AZ(req->obj);
req->acct_req.fetch++;
(void)HTTP1_DiscardReqBody(req);
if (req->objcore->flags & OC_F_FAILED) {
req->err_code = 503;
req->req_step = R_STP_ERROR;
(void)HSH_DerefObjCore(&wrk->stats, &req->objcore);
req->objcore = NULL;
return (REQ_FSM_MORE);
}
req->obj = oc_getobj(&wrk->stats, req->objcore);
req->objcore = NULL;
req->err_code = req->obj->response;
req->req_step = R_STP_DELIVER;
return (REQ_FSM_MORE);
}
static int
cnt_lookup(struct worker *wrk, struct req *req)
{
struct objcore *oc;
struct object *o;
struct objhead *oh;
struct busyobj *bo;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
AZ(req->objcore);
CHECK_OBJ_NOTNULL(req->vcl, VCL_CONF_MAGIC);
AZ(req->busyobj);
VRY_Prep(req);
AZ(req->objcore);
oc = HSH_Lookup(req);
if (oc == NULL) {
/*
* We lost the session to a busy object, disembark the
* worker thread. We return to STP_LOOKUP when the busy
* object has been unbusied, and still have the objhead
* around to restart the lookup with.
*/
return (2);
}
AZ(req->objcore);
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
oh = oc->objhead;
CHECK_OBJ_NOTNULL(oh, OBJHEAD_MAGIC);
/* If we inserted a new object it's a miss */
if (oc->flags & OC_F_BUSY) {
AZ(req->busyobj);
bo = VBO_GetBusyObj(wrk, req);
req->busyobj = bo;
/* One ref for req, one for FetchBody */
bo->refcount = 2;
VRY_Finish(req, bo);
oc->busyobj = bo;
wrk->stats.cache_miss++;
req->objcore = oc;
req->req_step = R_STP_MISS;
return (0);
}
/* We are not prepared to do streaming yet */
XXXAZ(req->busyobj);
o = oc_getobj(&wrk->stats, oc);
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC);
req->obj = o;
VRY_Finish(req, NULL);
if (oc->flags & OC_F_PASS) {
wrk->stats.cache_hitpass++;
VSLb(req->vsl, SLT_HitPass, "%u", req->obj->vxid);
(void)HSH_Deref(&wrk->stats, NULL, &req->obj);
AZ(req->objcore);
req->req_step = R_STP_PASS;
return (0);
}
wrk->stats.cache_hit++;
VSLb(req->vsl, SLT_Hit, "%u", req->obj->vxid);
req->req_step = R_STP_HIT;
return (0);
}
static enum req_fsm_nxt
cnt_lookup(struct worker *wrk, struct req *req)
{
struct objcore *oc, *boc;
struct object *o;
struct objhead *oh;
enum lookup_e lr;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
AZ(req->objcore);
CHECK_OBJ_NOTNULL(req->vcl, VCL_CONF_MAGIC);
VRY_Prep(req);
AZ(req->objcore);
lr = HSH_Lookup(req, &oc, &boc,
req->esi_level == 0 ? 1 : 0,
req->hash_always_miss ? 1 : 0
);
if (lr == HSH_BUSY) {
/*
* We lost the session to a busy object, disembark the
* worker thread. We return to STP_LOOKUP when the busy
* object has been unbusied, and still have the objhead
* around to restart the lookup with.
*/
return (REQ_FSM_DISEMBARK);
}
if (boc == NULL) {
VRY_Finish(req, DISCARD);
} else {
AN(boc->flags & OC_F_BUSY);
VRY_Finish(req, KEEP);
}
AZ(req->objcore);
if (lr == HSH_MISS) {
/* Found nothing */
VSLb(req->vsl, SLT_Debug, "XXXX MISS");
AZ(oc);
AN(boc);
AN(boc->flags & OC_F_BUSY);
req->objcore = boc;
req->req_step = R_STP_MISS;
return (REQ_FSM_MORE);
}
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
AZ (oc->flags & OC_F_BUSY);
AZ(req->objcore);
if (oc->flags & OC_F_PASS) {
/* Found a hit-for-pass */
VSLb(req->vsl, SLT_Debug, "XXXX HIT-FOR-PASS");
AZ(boc);
(void)HSH_DerefObjCore(&wrk->stats, &oc);
req->objcore = NULL;
wrk->stats.cache_hitpass++;
req->req_step = R_STP_PASS;
return (REQ_FSM_MORE);
}
oh = oc->objhead;
CHECK_OBJ_NOTNULL(oh, OBJHEAD_MAGIC);
o = oc_getobj(&wrk->stats, oc);
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC);
req->obj = o;
VSLb(req->vsl, SLT_Hit, "%u", req->obj->vxid);
VCL_hit_method(req->vcl, wrk, req, NULL, req->http->ws);
switch (wrk->handling) {
case VCL_RET_DELIVER:
if (boc != NULL) {
VBF_Fetch(wrk, req, boc, o, VBF_BACKGROUND);
} else {
(void)HTTP1_DiscardReqBody(req);// XXX: handle err
}
wrk->stats.cache_hit++;
req->req_step = R_STP_DELIVER;
return (REQ_FSM_MORE);
case VCL_RET_FETCH:
(void)HSH_DerefObj(&wrk->stats, &req->obj);
req->objcore = boc;
if (req->objcore != NULL)
req->req_step = R_STP_MISS;
else {
/*
* We don't have a busy object, so treat this
* lige a pass
*/
VSLb(req->vsl, SLT_VCL_Error,
"vcl_hit{} returns fetch without busy object."
" Doing pass.");
req->req_step = R_STP_PASS;
}
return (REQ_FSM_MORE);
case VCL_RET_RESTART:
req->req_step = R_STP_RESTART;
break;
case VCL_RET_ERROR:
req->req_step = R_STP_ERROR;
break;
case VCL_RET_PASS:
wrk->stats.cache_hit++;
req->req_step = R_STP_PASS;
break;
default:
INCOMPL();
}
/* Drop our object, we won't need it */
(void)HSH_DerefObj(&wrk->stats, &req->obj);
req->objcore = NULL;
if (boc != NULL) {
(void)HSH_DerefObjCore(&wrk->stats, &boc);
free(req->vary_b);
req->vary_b = NULL;
}
return (REQ_FSM_MORE);
}
static int
cnt_lookup(struct sess *sp)
{
struct objcore *oc;
struct object *o;
struct objhead *oh;
struct worker *wrk;
CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
wrk = sp->wrk;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(sp->vcl, VCL_CONF_MAGIC);
AZ(wrk->busyobj);
if (sp->hash_objhead == NULL) {
/* Not a waiting list return */
AZ(sp->vary_b);
AZ(sp->vary_l);
AZ(sp->vary_e);
(void)WS_Reserve(sp->ws, 0);
} else {
AN(sp->ws->r);
}
sp->vary_b = (void*)sp->ws->f;
sp->vary_e = (void*)sp->ws->r;
sp->vary_b[2] = '\0';
oc = HSH_Lookup(sp, &oh);
if (oc == NULL) {
/*
* We lost the session to a busy object, disembark the
* worker thread. The hash code to restart the session,
* still in STP_LOOKUP, later when the busy object isn't.
* NB: Do not access sp any more !
*/
return (1);
}
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
CHECK_OBJ_NOTNULL(oh, OBJHEAD_MAGIC);
/* If we inserted a new object it's a miss */
if (oc->flags & OC_F_BUSY) {
wrk->stats.cache_miss++;
if (sp->vary_l != NULL) {
assert(oc->busyobj->vary == sp->vary_b);
VRY_Validate(oc->busyobj->vary);
WS_ReleaseP(sp->ws, (void*)sp->vary_l);
} else {
AZ(oc->busyobj->vary);
WS_Release(sp->ws, 0);
}
sp->vary_b = NULL;
sp->vary_l = NULL;
sp->vary_e = NULL;
wrk->objcore = oc;
CHECK_OBJ_NOTNULL(wrk->busyobj, BUSYOBJ_MAGIC);
sp->step = STP_MISS;
return (0);
}
o = oc_getobj(wrk, oc);
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC);
wrk->obj = o;
WS_Release(sp->ws, 0);
sp->vary_b = NULL;
sp->vary_l = NULL;
sp->vary_e = NULL;
if (oc->flags & OC_F_PASS) {
wrk->stats.cache_hitpass++;
WSP(sp, SLT_HitPass, "%u", wrk->obj->xid);
(void)HSH_Deref(wrk, NULL, &wrk->obj);
wrk->objcore = NULL;
sp->step = STP_PASS;
return (0);
}
wrk->stats.cache_hit++;
WSP(sp, SLT_Hit, "%u", wrk->obj->xid);
sp->step = STP_HIT;
return (0);
}
