/// <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);
}
}
}
public void onInterest(Name prefix, Interest interest, Face face,
long interestFilterId, InterestFilter filter)
{
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO, "MemoryContentCache: Received Interest {0}",
interest.toUri());
double nowMilliseconds = net.named_data.jndn.util.Common.getNowMilliseconds();
doCleanup(nowMilliseconds);
Name.Component selectedComponent = null;
Blob selectedEncoding = null;
// We need to iterate over both arrays.
int totalSize = staleTimeCache_.Count + noStaleTimeCache_.Count;
for (int i = 0; i < totalSize; ++i)
{
MemoryContentCache.Content content;
bool isFresh = true;
if (i < staleTimeCache_.Count)
{
MemoryContentCache.StaleTimeContent staleTimeContent = staleTimeCache_[i];
content = staleTimeContent;
isFresh = staleTimeContent.isFresh(nowMilliseconds);
}
else
{
// We have iterated over the first array. Get from the second.
content = noStaleTimeCache_[i - staleTimeCache_.Count];
}
if (interest.matchesName(content.getName()) &&
!(interest.getMustBeFresh() && !isFresh))
{
if (interest.getChildSelector() < 0)
{
// No child selector, so send the first match that we have found.
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"MemoryContentCache: Reply Data {0}",
content.getName());
try {
face.send(content.getDataEncoding());
} catch (IOException ex) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, null, ex);
}
return;
}
else
{
// Update selectedEncoding based on the child selector.
Name.Component component;
if (content.getName().size() > interest.getName().size())
{
component = content.getName().get(
interest.getName().size());
}
else
{
component = emptyComponent_;
}
bool gotBetterMatch = false;
if (selectedEncoding == null)
{
// Save the first match.
gotBetterMatch = true;
}
else
{
if (interest.getChildSelector() == 0)
{
// Leftmost child.
if (component.compare(selectedComponent) < 0)
{
gotBetterMatch = true;
}
}
else
{
// Rightmost child.
if (component.compare(selectedComponent) > 0)
{
gotBetterMatch = true;
}
}
}
if (gotBetterMatch)
{
selectedComponent = component;
selectedEncoding = content.getDataEncoding();
}
}
}
}
if (selectedEncoding != null)
{
// We found the leftmost or rightmost child.
try {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"MemoryContentCache: Reply Data to Interest {0}",
interest.toUri());
face.send(selectedEncoding);
} catch (IOException ex_0) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, null, ex_0);
}
}
else
{
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"MemoryContentCache: onDataNotFound for {0}",
interest.toUri());
// Call the onDataNotFound callback (if defined).
Object onDataNotFound = ILOG.J2CsMapping.Collections.Collections.Get(onDataNotFoundForPrefix_, prefix.toUri());
if (onDataNotFound != null)
{
try {
((OnInterestCallback)onDataNotFound).onInterest(prefix,
interest, face, interestFilterId, filter);
} catch (Exception ex_1) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onDataNotFound", ex_1);
}
}
}
}
/// <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
/// data.getMetaInfo().getFreshnessPeriod(), 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)
{
doCleanup();
if (data.getMetaInfo().getFreshnessPeriod() >= 0.0d) {
// The content will go stale, so use staleTimeCache_.
MemoryContentCache.StaleTimeContent content = new MemoryContentCache.StaleTimeContent (data);
// Insert into staleTimeCache, sorted on content.staleTimeMilliseconds.
// Search from the back since we expect it to go there.
int i = staleTimeCache_.Count - 1;
while (i >= 0) {
if (staleTimeCache_[i].getStaleTimeMilliseconds() <= content
.getStaleTimeMilliseconds())
break;
--i;
}
// Element i is the greatest less than or equal to
// content.staleTimeMilliseconds, 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.
double nowMilliseconds = net.named_data.jndn.util.Common.getNowMilliseconds();
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.
pendingInterest.getFace().send(data.wireEncode());
} catch (IOException ex) {
ILOG.J2CsMapping.Util.Logging.Logger.getLogger(typeof(MemoryContentCache).FullName).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);
}
}
}