/// <summary>
/// Add the Data packet to the cache so that it is available to use to
/// answer interests. If data.getMetaInfo().getFreshnessPeriod() is not
/// negative, set the staleness time to now plus the maximum of
/// data.getMetaInfo().getFreshnessPeriod() and minimumCacheLifetime, which is
/// checked during cleanup to remove stale content.
/// This also checks if cleanupIntervalMilliseconds
/// milliseconds have passed and removes stale content from the cache. After
/// removing stale content, remove timed-out pending interests from
/// storePendingInterest(), then if the added Data packet satisfies any
/// interest, send it through the face and remove the interest from the pending
/// interest table.
/// </summary>
///
/// <param name="data"></param>
public void add(Data data)
{
double nowMilliseconds = net.named_data.jndn.util.Common.getNowMilliseconds();
doCleanup(nowMilliseconds);
if (data.getMetaInfo().getFreshnessPeriod() >= 0.0d)
{
// The content will go stale, so use staleTimeCache_.
MemoryContentCache.StaleTimeContent content = new MemoryContentCache.StaleTimeContent(data,
nowMilliseconds, minimumCacheLifetime_);
// Insert into staleTimeCache, sorted on content.cacheRemovalTimeMilliseconds_.
// Search from the back since we expect it to go there.
int i = staleTimeCache_.Count - 1;
while (i >= 0)
{
if (staleTimeCache_[i].getCacheRemovalTimeMilliseconds() <= content
.getCacheRemovalTimeMilliseconds())
{
break;
}
--i;
}
// Element i is the greatest less than or equal to
// content.cacheRemovalTimeMilliseconds_, so insert after it.
staleTimeCache_.Insert(i + 1, content);
}
else
{
// The data does not go stale, so use noStaleTimeCache_.
ILOG.J2CsMapping.Collections.Collections.Add(noStaleTimeCache_, new MemoryContentCache.Content(data));
}
// Remove timed-out interests and check if the data packet matches any
// pending interest.
// Go backwards through the list so we can erase entries.
for (int i_0 = pendingInterestTable_.Count - 1; i_0 >= 0; --i_0)
{
MemoryContentCache.PendingInterest pendingInterest = pendingInterestTable_[i_0];
if (pendingInterest.isTimedOut(nowMilliseconds))
{
ILOG.J2CsMapping.Collections.Collections.RemoveAt(pendingInterestTable_, i_0);
continue;
}
if (pendingInterest.getInterest().matchesName(data.getName()))
{
try {
// Send to the same face from the original call to onInterest.
// wireEncode returns the cached encoding if available.
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"MemoryContentCache: Reply w/ add Data {0}",
data.getName());
pendingInterest.getFace().send(data.wireEncode());
} catch (IOException ex) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, ex.Message);
return;
}
// The pending interest is satisfied, so remove it.
ILOG.J2CsMapping.Collections.Collections.RemoveAt(pendingInterestTable_, i_0);
}
}
}
