PARCBitVector *
athenaTransportLinkAdapter_Send(AthenaTransportLinkAdapter *athenaTransportLinkAdapter,
CCNxMetaMessage *ccnxMetaMessage,
PARCBitVector *linkOutputVector)
{
PARCBitVector *resultVector = parcBitVector_Create();
int nextLinkToWrite = 0;
if (athenaTransportLinkAdapter->instanceList == NULL) {
return resultVector;
}
while ((nextLinkToWrite = parcBitVector_NextBitSet(linkOutputVector, nextLinkToWrite)) >= 0) {
athenaTransportLinkAdapter->stats.messageSend_Attempted++;
if (nextLinkToWrite >= parcArrayList_Size(athenaTransportLinkAdapter->instanceList)) {
athenaTransportLinkAdapter->stats.messageSend_LinkDoesNotExist++;
nextLinkToWrite++;
continue;
}
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->instanceList, nextLinkToWrite);
if (athenaTransportLink == NULL) {
athenaTransportLinkAdapter->stats.messageSend_LinkDoesNotExist++;
nextLinkToWrite++;
continue;
}
if (!(athenaTransportLink_GetEvent(athenaTransportLink) & AthenaTransportLinkEvent_Send)) {
athenaTransportLinkAdapter->stats.messageSend_LinkNotAcceptingSendRequests++;
nextLinkToWrite++;
continue;
}
// If we're sending an interest to a non-local link,
// check that it has a sufficient hoplimit.
if (ccnxMetaMessage_IsInterest(ccnxMetaMessage)) {
if (athenaTransportLink_IsNotLocal(athenaTransportLink)) {
if (ccnxInterest_GetHopLimit(ccnxMetaMessage) == 0) {
athenaTransportLinkAdapter->stats.messageSend_HopLimitExceeded++;
nextLinkToWrite++;
continue;
}
}
}
int result = athenaTransportLink_Send(athenaTransportLink, ccnxMetaMessage);
if (result == 0) {
athenaTransportLinkAdapter->stats.messageSent++;
parcBitVector_Set(resultVector, nextLinkToWrite);
} else {
athenaTransportLinkAdapter->stats.messageSend_LinkSendFailed++;
}
nextLinkToWrite++;
}
return resultVector;
}
bool
athenaTransportLinkAdapter_IsNotLocal(AthenaTransportLinkAdapter *athenaTransportLinkAdapter, int linkId)
{
if (athenaTransportLinkAdapter->instanceList == NULL) {
return false;
}
if ((linkId >= 0) && (linkId < parcArrayList_Size(athenaTransportLinkAdapter->instanceList))) {
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->instanceList, linkId);
if (athenaTransportLink) {
return athenaTransportLink_IsNotLocal(athenaTransportLink);
}
}
return false;
}
static AthenaTransportLink *
_newLink(AthenaTransportLink *athenaTransportLink, _UDPLinkData *newLinkData)
{
// Accept a new tunnel connection.
// Clone a new link from the current listener.
const char *derivedLinkName = _createNameFromLinkData(&newLinkData->link);
AthenaTransportLink *newTransportLink = athenaTransportLink_Clone(athenaTransportLink,
derivedLinkName,
_UDPSend,
_UDPReceiveProxy,
_UDPClose);
if (newTransportLink == NULL) {
parcLog_Error(athenaTransportLink_GetLogger(athenaTransportLink),
"athenaTransportLink_Clone failed");
parcMemory_Deallocate(&derivedLinkName);
_UDPLinkData_Destroy(&newLinkData);
return NULL;
}
_setConnectLinkState(newTransportLink, newLinkData);
// Send the new link up to be added.
int result = athenaTransportLink_AddLink(athenaTransportLink, newTransportLink);
if (result == -1) {
parcLog_Error(athenaTransportLink_GetLogger(athenaTransportLink),
"athenaTransportLink_AddLink failed: %s", strerror(errno));
_UDPLinkData_Destroy(&newLinkData);
athenaTransportLink_Release(&newTransportLink);
} else {
parcLog_Info(athenaTransportLink_GetLogger(athenaTransportLink),
"new link accepted by %s: %s %s",
athenaTransportLink_GetName(athenaTransportLink), derivedLinkName,
athenaTransportLink_IsNotLocal(athenaTransportLink) ? "" : "(Local)");
}
parcMemory_Deallocate(&derivedLinkName);
// Could pass a message back here regarding the new link.
return newTransportLink;
}
static CCNxMetaMessage *
_create_linkList_response(AthenaTransportLinkAdapter *athenaTransportLinkAdapter, CCNxName *ccnxName)
{
PARCJSONArray *jsonLinkList = parcJSONArray_Create();
for (int index = 0; index < parcArrayList_Size(athenaTransportLinkAdapter->listenerList); index++) {
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->listenerList, index);
const char *linkName = athenaTransportLink_GetName(athenaTransportLink);
bool notLocal = athenaTransportLink_IsNotLocal(athenaTransportLink);
bool localForced = athenaTransportLink_IsForceLocal(athenaTransportLink);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, "linkName", linkName);
parcJSON_AddInteger(jsonItem, "index", -1);
parcJSON_AddBoolean(jsonItem, "notLocal", notLocal);
parcJSON_AddBoolean(jsonItem, "localForced", localForced);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonLinkList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
if (notLocal) {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link listener%s: %s", localForced ? " (forced remote)" : "", linkName);
} else {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link listener%s: %s", localForced ? " (forced local)" : "", linkName);
}
}
for (int index = 0; index < parcArrayList_Size(athenaTransportLinkAdapter->instanceList); index++) {
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->instanceList, index);
if (athenaTransportLink) {
const char *linkName = athenaTransportLink_GetName(athenaTransportLink);
bool notLocal = athenaTransportLink_IsNotLocal(athenaTransportLink);
bool localForced = athenaTransportLink_IsForceLocal(athenaTransportLink);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, "linkName", linkName);
parcJSON_AddInteger(jsonItem, "index", index);
parcJSON_AddBoolean(jsonItem, "notLocal", notLocal);
parcJSON_AddBoolean(jsonItem, "localForced", localForced);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonLinkList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
if (notLocal) {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link instance [%d] %s: %s", index, localForced ? "(forced remote)" : "(remote)", linkName);
} else {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link instance [%d] %s: %s", index, localForced ? "(forced local)" : "(local)", linkName);
}
}
}
char *jsonString = parcJSONArray_ToString(jsonLinkList);
parcJSONArray_Release(&jsonLinkList);
PARCBuffer *payload = parcBuffer_CreateFromArray(jsonString, strlen(jsonString));
CCNxContentObject *contentObject =
ccnxContentObject_CreateWithDataPayload(ccnxName, parcBuffer_Flip(payload));
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t nowInMillis = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
ccnxContentObject_SetExpiryTime(contentObject, nowInMillis + 100); // this response is good for 100 millis
CCNxMetaMessage *result = ccnxMetaMessage_CreateFromContentObject(contentObject);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
parcMemory_Deallocate(&jsonString);
athena_EncodeMessage(result);
return result;
}
