struct ccnl_content_s*
ccnl_content_add2cache(struct ccnl_relay_s *ccnl, struct ccnl_content_s *c)
{
struct ccnl_content_s *cit;
DEBUGMSG_CORE(DEBUG, "ccnl_content_add2cache (%d/%d) --> %p = %s [%d]\n",
ccnl->contentcnt, ccnl->max_cache_entries,
(void*)c, ccnl_prefix_to_path(c->pkt->pfx), (c->pkt->pfx->chunknum)? *(c->pkt->pfx->chunknum) : -1);
for (cit = ccnl->contents; cit; cit = cit->next) {
if (c == cit) {
DEBUGMSG_CORE(DEBUG, "--- Already in cache ---\n");
return NULL;
}
}
#ifdef USE_NACK
if (ccnl_nfnprefix_contentIsNACK(c))
return NULL;
#endif
if (ccnl->max_cache_entries > 0 &&
ccnl->contentcnt >= ccnl->max_cache_entries) { // remove oldest content
struct ccnl_content_s *c2;
int age = 0;
for (c2 = ccnl->contents; c2; c2 = c2->next)
if (!(c2->flags & CCNL_CONTENT_FLAGS_STATIC) &&
((age == 0) || c2->last_used < age))
age = c2->last_used;
if (c2)
ccnl_content_remove(ccnl, c2);
}
DBL_LINKED_LIST_ADD(ccnl->contents, c);
ccnl->contentcnt++;
return c;
}
int
ccnl_nfn_RX_result(struct ccnl_relay_s *relay, struct ccnl_face_s *from,
struct ccnl_content_s *c)
{
struct ccnl_interest_s *i_it = NULL;
int found = 0;
DEBUGMSG_CFWD(INFO, "data in rx result %.*s\n", c->pkt->contlen, c->pkt->content);
TRACEIN();
#ifdef USE_NACK
if (ccnl_nfnprefix_contentIsNACK(c)) {
ccnl_nfn_nack_local_computation(relay, c->pkt->buf, c->pkt->pfx,
from, c->pkt->pfx->suite);
return -1;
}
#endif // USE_NACK
for (i_it = relay->pit; i_it;/* i_it = i_it->next*/) {
//Check if prefix match and it is a nfn request
if (!ccnl_prefix_cmp(c->pkt->pfx, NULL, i_it->pkt->pfx, CMP_EXACT) &&
i_it->from && i_it->from->faceid < 0) {
struct ccnl_face_s *from = i_it->from;
int faceid = - from->faceid;
DEBUGMSG(TRACE, " interest faceid=%d\n", i_it->from->faceid);
ccnl_content_add2cache(relay, c);
DEBUGMSG_CFWD(INFO, "data in rx resulti after add to cache %.*s\n", c->pkt->contlen, c->pkt->content);
DEBUGMSG(DEBUG, "Continue configuration for configid: %d with prefix: %s\n",
faceid, ccnl_prefix_to_path(c->pkt->pfx));
i_it->flags |= CCNL_PIT_COREPROPAGATES;
i_it->from = NULL;
ccnl_nfn_continue_computation(relay, faceid, 0);
i_it = ccnl_interest_remove(relay, i_it);
//ccnl_face_remove(relay, from);
++found;
//goto Done;
} else
i_it = i_it->next;
}
TRACEOUT();
return found > 0;
}
int
ccnl_nfn_RX_result(struct ccnl_relay_s *relay, struct ccnl_face_s *from,
struct ccnl_content_s *c)
{
struct ccnl_interest_s *i_it = NULL;
int found = 0;
DEBUGMSG(TRACE, "ccnl_nfn_RX_result()\n");
#ifdef USE_NACK
if (ccnl_nfnprefix_contentIsNACK(c)) {
ccnl_nfn_nack_local_computation(relay, c->pkt, c->name,
from, c->name->suite);
return -1;
}
#endif // USE_NACK
for (i_it = relay->pit; i_it;/* i_it = i_it->next*/) {
//Check if prefix match and it is a nfn request
DEBUGMSG(DEBUG, "CMP: %d (match if zero), faceid: %d \n",
ccnl_prefix_cmp(c->name, NULL, i_it->prefix, CMP_EXACT),
i_it->from->faceid);
if (!ccnl_prefix_cmp(c->name, NULL, i_it->prefix, CMP_EXACT) &&
i_it->from->faceid < 0) {
int faceid = -i_it->from->faceid;
ccnl_content_add2cache(relay, c);
DEBUGMSG(DEBUG, "Continue configuration for configid: %d with prefix: %s\n",
-i_it->from->faceid, ccnl_prefix_to_path(c->name));
i_it->flags |= CCNL_PIT_COREPROPAGATES;
i_it = ccnl_interest_remove(relay, i_it);
ccnl_nfn_continue_computation(relay, faceid, 0);
++found;
//goto Done;
}
else
i_it = i_it->next;
}
return found > 0;
}
struct ccnl_content_s*
ccnl_content_add2cache(struct ccnl_relay_s *ccnl, struct ccnl_content_s *c)
{
struct ccnl_content_s *cit;
for (cit = ccnl->contents; cit; cit = cit->next) {
if (c == cit) {
DEBUGMSG_CORE(DEBUG, "--- Already in cache ---\n");
return NULL;
}
}
#ifdef USE_NACK
if (ccnl_nfnprefix_contentIsNACK(c))
return NULL;
#endif
if (c->flags & CCNL_CONTENT_FLAGS_STATIC){
// DEBUGMSG_CORE(INFO, " ICNIoT: going to add self published content to cache \n");
DBL_LINKED_LIST_ADD(ccnl->contents, c);
DEBUGMSG_CORE(INFO, " ICNIoT: added_content2cache without incrementing count:%d\n",ccnl->contentcnt);
return c;
}
// not self published content
if (ccnl->max_cache_entries > 0 &&
ccnl->contentcnt >= ccnl->max_cache_entries) { //Cache replacement strategy
struct ccnl_content_s *c2;
struct ccnl_content_s *c3 = NULL;
int age = 0;
// char* prefixBuf = NULL;
#ifdef UPDATE_TIME_SERIES
if(IsTimeSeriesContent(c->pkt->pfx)){
DEBUGMSG_CORE(INFO, " ICNIoT: UTS-LRU The new received content is time series content\n");
c3 = findOlderVersion(ccnl, c->pkt->pfx);
}
#endif
#ifdef RECOMMENDED_CACHE_TIME
c3 = oldestCacheTimeExpiredContent(ccnl);
if(c3)
DEBUGMSG_CORE(INFO, " ICNIoT: RCT, Found a content object with expired RCT\n");
#endif
if (!c3){//if not time series CO OR if time series CO but older version of stream doesnt
//exist in cache. For both cases use LRU
DEBUGMSG_CORE(INFO, " ICNIoT: using LRU\n");
for (c2 = ccnl->contents; c2; c2 = c2->next){
if (!(c2->flags & CCNL_CONTENT_FLAGS_STATIC) && ((age == 0) || c2->last_used < age)){
age = c2->last_used;
c3 = c2;
}
}
}
// prefixBuf = ccnl_prefix_to_path(c3->pkt->pfx);
// DEBUGMSG_CORE(INFO, " ICNIoT: yes ! removed content\n");
// free(prefixBuf);
ccnl_content_remove(ccnl, c3);
}
if(ccnl->contentcnt < ccnl->max_cache_entries){
// char* prefixBuf2 = NULL;
// prefixBuf2 = ccnl_prefix_to_path(c->pkt->pfx);
// DEBUGMSG_CORE(INFO, " ICNIoT: going to add %s content to cache\n",prefixBuf2);
// free(prefixBuf2);
DBL_LINKED_LIST_ADD(ccnl->contents, c);
ccnl->contentcnt++;
DEBUGMSG_CORE(INFO, " ICNIoT: added_content2cache count:%d\n",ccnl->contentcnt);
}
return c;
}
