/**
* Invoked when get a NOT_MY_VBUCKET response. If the response contains a JSON
* payload then we refresh the configuration with it.
*
* This function returns 1 if the operation was successfully rescheduled;
* otherwise it returns 0. If it returns 0 then we give the error back to the
* user.
*/
static int
handle_nmv(mc_SERVER *oldsrv, packet_info *resinfo, mc_PACKET *oldpkt)
{
mc_PACKET *newpkt;
protocol_binary_request_header hdr;
lcb_error_t err = LCB_ERROR;
lcb_t instance = oldsrv->instance;
lcb_U16 vbid;
clconfig_provider *cccp = lcb_confmon_get_provider(instance->confmon,
LCB_CLCONFIG_CCCP);
mcreq_read_hdr(oldpkt, &hdr);
vbid = ntohs(hdr.request.vbucket);
lcb_log(LOGARGS(oldsrv, WARN), LOGFMT "NOT_MY_VBUCKET. Packet=%p (S=%u). VBID=%u", LOGID(oldsrv), (void*)oldpkt, oldpkt->opaque, vbid);
/* Notify of new map */
lcb_vbguess_remap(instance, vbid, oldsrv->pipeline.index);
if (PACKET_NBODY(resinfo) && cccp->enabled) {
lcb_string s;
lcb_string_init(&s);
lcb_string_append(&s, PACKET_VALUE(resinfo), PACKET_NVALUE(resinfo));
err = lcb_cccp_update(cccp, mcserver_get_host(oldsrv), &s);
lcb_string_release(&s);
}
if (err != LCB_SUCCESS) {
int bs_options;
if (instance->cur_configinfo->origin == LCB_CLCONFIG_CCCP) {
/**
* XXX: Not enough to see if cccp was enabled, since cccp might
* be requested by a user, but would still not actually be active
* for clusters < 2.5 If our current config is from CCCP
* then we can be fairly certain that CCCP is indeed working.
*
* For this reason, we don't use if (cccp->enabled) {...}
*/
bs_options = LCB_BS_REFRESH_THROTTLE;
} else {
bs_options = LCB_BS_REFRESH_ALWAYS;
}
lcb_bootstrap_common(instance, bs_options);
}
if (!lcb_should_retry(oldsrv->settings, oldpkt, LCB_NOT_MY_VBUCKET)) {
return 0;
}
/** Reschedule the packet again .. */
newpkt = mcreq_renew_packet(oldpkt);
newpkt->flags &= ~MCREQ_STATE_FLAGS;
lcb_retryq_nmvadd(instance->retryq, (mc_EXPACKET*)newpkt);
return 1;
}
static void
rget_callback(mc_PIPELINE *pl, mc_PACKET *pkt, lcb_error_t err, const void *arg)
{
rget_cookie *rck = (rget_cookie *)pkt->u_rdata.exdata;
lcb_RESPGET *resp = (void *)arg;
lcb_RESPCALLBACK callback;
lcb_t instance = rck->instance;
callback = lcb_find_callback(instance, LCB_CALLBACK_GETREPLICA);
/** Figure out what the strategy is.. */
if (rck->strategy == LCB_REPLICA_SELECT || rck->strategy == LCB_REPLICA_ALL) {
/** Simplest */
if (rck->strategy == LCB_REPLICA_SELECT || rck->remaining == 1) {
resp->rflags |= LCB_RESP_F_FINAL;
}
callback(instance, LCB_CALLBACK_GETREPLICA, (const lcb_RESPBASE *)resp);
} else {
mc_CMDQUEUE *cq = &instance->cmdq;
mc_PIPELINE *nextpl = NULL;
/** FIRST */
do {
int nextix;
rck->r_cur++;
nextix = lcbvb_vbreplica(cq->config, rck->vbucket, rck->r_cur);
if (nextix > -1 && nextix < (int)cq->npipelines) {
/* have a valid next index? */
nextpl = cq->pipelines[nextix];
break;
}
} while (rck->r_cur < rck->r_max);
if (err == LCB_SUCCESS || rck->r_cur == rck->r_max || nextpl == NULL) {
resp->rflags |= LCB_RESP_F_FINAL;
callback(instance, LCB_CALLBACK_GETREPLICA, (lcb_RESPBASE *)resp);
/* refcount=1 . Free this now */
rck->remaining = 1;
} else if (err != LCB_SUCCESS) {
mc_PACKET *newpkt = mcreq_renew_packet(pkt);
newpkt->flags &= ~MCREQ_STATE_FLAGS;
mcreq_sched_add(nextpl, newpkt);
/* Use this, rather than lcb_sched_leave(), because this is being
* invoked internally by the library. */
mcreq_sched_leave(cq, 1);
/* wait */
rck->remaining = 2;
}
}
if (!--rck->remaining) {
free(rck);
}
(void)pl;
}
/**
* Invoked when get a NOT_MY_VBUCKET response. If the response contains a JSON
* payload then we refresh the configuration with it.
*
* This function returns 1 if the operation was successfully rescheduled;
* otherwise it returns 0. If it returns 0 then we give the error back to the
* user.
*/
static int
handle_nmv(mc_SERVER *oldsrv, packet_info *resinfo, mc_PACKET *oldpkt)
{
mc_PACKET *newpkt;
protocol_binary_request_header hdr;
lcb_error_t err = LCB_ERROR;
lcb_t instance = oldsrv->instance;
lcb_U16 vbid;
int tmpix;
clconfig_provider *cccp = lcb_confmon_get_provider(instance->confmon,
LCB_CLCONFIG_CCCP);
mcreq_read_hdr(oldpkt, &hdr);
vbid = ntohs(hdr.request.vbucket);
lcb_log(LOGARGS(oldsrv, WARN), LOGFMT "NOT_MY_VBUCKET. Packet=%p (S=%u). VBID=%u", LOGID(oldsrv), (void*)oldpkt, oldpkt->opaque, vbid);
/* Notify of new map */
tmpix = lcb_vbguess_remap(LCBT_VBCONFIG(instance),
instance->vbguess, vbid, oldsrv->pipeline.index);
if (tmpix > -1 && tmpix != oldsrv->pipeline.index) {
lcb_log(LOGARGS(oldsrv, TRACE), LOGFMT "Heuristically set IX=%d as master for VBID=%u", LOGID(oldsrv), tmpix, vbid);
}
if (PACKET_NBODY(resinfo) && cccp->enabled) {
lcb_string s;
lcb_string_init(&s);
lcb_string_append(&s, PACKET_VALUE(resinfo), PACKET_NVALUE(resinfo));
err = lcb_cccp_update(cccp, mcserver_get_host(oldsrv), &s);
lcb_string_release(&s);
}
if (err != LCB_SUCCESS) {
lcb_bootstrap_common(instance, LCB_BS_REFRESH_ALWAYS);
}
if (!lcb_should_retry(oldsrv->settings, oldpkt, LCB_NOT_MY_VBUCKET)) {
return 0;
}
/** Reschedule the packet again .. */
newpkt = mcreq_renew_packet(oldpkt);
newpkt->flags &= ~MCREQ_STATE_FLAGS;
lcb_retryq_add(instance->retryq, (mc_EXPACKET*)newpkt, LCB_NOT_MY_VBUCKET);
return 1;
}