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authorMichele Papalini <micpapal@cisco.com>2020-02-05 16:34:13 +0000
committerGerrit Code Review <gerrit@fd.io>2020-02-05 16:34:13 +0000
commit36b58c1359947e6c9d372560641e34cce5ff9caf (patch)
tree5e652b1042d6a36ae9c023754a2856cca5b5f5d6 /libtransport/src/hicn
parent91121807183382ec746b2cd8979d9991c300cd99 (diff)
parente1cc8df89a953871b3d76f55f82ebb03b86b8eb5 (diff)
Merge "[HICN-501] Change calculation of next reassembly segment when manifests are enabled"
Diffstat (limited to 'libtransport/src/hicn')
-rw-r--r--libtransport/src/hicn/transport/interfaces/socket_producer.cc12
-rw-r--r--libtransport/src/hicn/transport/protocols/manifest_indexing_manager.cc71
-rw-r--r--libtransport/src/hicn/transport/protocols/manifest_indexing_manager.h11
-rw-r--r--libtransport/src/hicn/transport/protocols/reassembly.h2
4 files changed, 57 insertions, 39 deletions
diff --git a/libtransport/src/hicn/transport/interfaces/socket_producer.cc b/libtransport/src/hicn/transport/interfaces/socket_producer.cc
index 7d7f4a0..6782000 100644
--- a/libtransport/src/hicn/transport/interfaces/socket_producer.cc
+++ b/libtransport/src/hicn/transport/interfaces/socket_producer.cc
@@ -165,7 +165,6 @@ uint32_t ProducerSocket::produce(Name content_name,
getSocketOption(GeneralTransportOptions::IDENTITY, identity);
auto buffer_size = buffer->length();
- const std::size_t hash_size = 32;
int bytes_segmented = 0;
std::size_t header_size;
std::size_t manifest_header_size = 0;
@@ -176,7 +175,6 @@ uint32_t ProducerSocket::produce(Name content_name,
core::Packet::Format format;
std::shared_ptr<ContentObjectManifest> manifest;
bool is_last_manifest = false;
- std::unique_ptr<utils::CryptoHash> zero_hash;
suffix_content.updateSuffix(start_offset);
suffix_content.setUsingManifest(making_manifest);
@@ -249,10 +247,6 @@ uint32_t ProducerSocket::produce(Name content_name,
manifest->setFinalBlockNumber(std::numeric_limits<uint32_t>::max());
}
- uint8_t hash[hash_size];
- std::memset(hash, 0, hash_size);
- zero_hash = std::make_unique<utils::CryptoHash>(
- hash, hash_size, static_cast<utils::CryptoHashType>(hash_algo));
}
for (unsigned int packaged_segments = 0;
@@ -260,8 +254,6 @@ uint32_t ProducerSocket::produce(Name content_name,
if (making_manifest) {
if (manifest->estimateManifestSize(2) >
data_packet_size - manifest_header_size) {
- // Add next manifest
- manifest->addSuffixHash(suffix_manifest.getSuffix(), *zero_hash);
// Send the current manifest
manifest->encode();
identity->getSigner().sign(*manifest);
@@ -339,10 +331,6 @@ uint32_t ProducerSocket::produce(Name content_name,
manifest->setFinalManifest(is_last_manifest);
}
- if (!is_last) {
- manifest->addSuffixHash(suffix_content.getSuffix(), *zero_hash);
- }
-
manifest->encode();
identity->getSigner().sign(*manifest);
passContentObjectToCallbacks(manifest);
diff --git a/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.cc b/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.cc
index 0c3fd76..ea13bf9 100644
--- a/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.cc
+++ b/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.cc
@@ -29,9 +29,11 @@ ManifestIndexManager::ManifestIndexManager(
interface::ConsumerSocket *icn_socket, TransportProtocol *next_interest)
: IncrementalIndexManager(icn_socket),
PacketManager<Interest>(1024),
- next_reassembly_segment_(suffix_queue_.end()),
next_to_retrieve_segment_(suffix_queue_.end()),
suffix_manifest_(core::NextSegmentCalculationStrategy::INCREMENTAL, 0),
+ next_reassembly_segment_(
+ core::NextSegmentCalculationStrategy::INCREMENTAL, 1, true),
+ ignored_segments_(),
next_interest_(next_interest) {}
bool ManifestIndexManager::onManifest(
@@ -51,13 +53,10 @@ bool ManifestIndexManager::onManifest(
switch (manifest->getManifestType()) {
case core::ManifestType::INLINE_MANIFEST: {
auto _it = manifest->getSuffixList().begin();
- auto _end = --manifest->getSuffixList().end();
+ auto _end = manifest->getSuffixList().end();
+ size_t nb_segments = std::distance(_it, _end);
final_suffix_ = manifest->getFinalBlockNumber(); // final block number
- if (TRANSPORT_EXPECT_FALSE(manifest->isFinalManifest())) {
- _end++;
- }
-
suffix_hash_map_[_it->first] =
std::make_pair(std::vector<uint8_t>(_it->second, _it->second + 32),
manifest->getHashAlgorithm());
@@ -80,15 +79,31 @@ bool ManifestIndexManager::onManifest(
}
if (TRANSPORT_EXPECT_FALSE(manifest->getName().getSuffix()) == 0) {
- // Set the iterators to the beginning of the suffix queue
- next_reassembly_segment_ = suffix_queue_.begin();
- // Set number of segments in manifests assuming the first one is full
- suffix_manifest_.setNbSegments(
- std::distance(manifest->getSuffixList().begin(),
- manifest->getSuffixList().end()) -
- 1);
- suffix_manifest_.setSuffixStrategy(
- manifest->getNextSegmentCalculationStrategy());
+ core::NextSegmentCalculationStrategy strategy =
+ manifest->getNextSegmentCalculationStrategy();
+
+ suffix_manifest_.reset(0);
+ suffix_manifest_.setNbSegments(nb_segments);
+ suffix_manifest_.setSuffixStrategy(strategy);
+ TRANSPORT_LOGD("Capacity of 1st manifest %zu",
+ suffix_manifest_.getNbSegments());
+
+ next_reassembly_segment_.reset(*suffix_queue_.begin());
+ next_reassembly_segment_.setNbSegments(nb_segments);
+ suffix_manifest_.setSuffixStrategy(strategy);
+ }
+
+ // If the manifest is not full, we add the suffixes of missing segments
+ // to the list of segments to ignore when computing the next reassembly
+ // index.
+ if (TRANSPORT_EXPECT_FALSE(
+ suffix_manifest_.getNbSegments() - nb_segments > 0)) {
+ auto start = manifest->getSuffixList().begin();
+ auto last = --_end;
+ for (uint32_t i = last->first + 1;
+ i < start->first + suffix_manifest_.getNbSegments(); i++) {
+ ignored_segments_.push_back(i);
+ }
}
if (TRANSPORT_EXPECT_FALSE(manifest->isFinalManifest()) == 0) {
@@ -242,16 +257,28 @@ bool ManifestIndexManager::isFinalSuffixDiscovered() {
}
uint32_t ManifestIndexManager::getNextReassemblySegment() {
- if (TRANSPORT_EXPECT_FALSE(next_reassembly_segment_ == suffix_queue_.end())) {
- return invalid_index;
- }
+ uint32_t current_reassembly_segment;
+
+ while (true) {
+ current_reassembly_segment = next_reassembly_segment_.getSuffix();
+ next_reassembly_segment_++;
+
+ if (TRANSPORT_EXPECT_FALSE(current_reassembly_segment > final_suffix_)) {
+ return invalid_index;
+ }
+
+ if (ignored_segments_.empty()) break;
+
+ auto is_ignored =
+ std::find(ignored_segments_.begin(), ignored_segments_.end(),
+ current_reassembly_segment);
+
+ if (is_ignored == ignored_segments_.end()) break;
- if (TRANSPORT_EXPECT_TRUE(next_reassembly_segment_ !=
- suffix_queue_.begin())) {
- suffix_queue_.erase(std::prev(next_reassembly_segment_));
+ ignored_segments_.erase(is_ignored);
}
- return *next_reassembly_segment_++;
+ return current_reassembly_segment;
}
void ManifestIndexManager::reset() {
diff --git a/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.h b/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.h
index cb88940..645b20e 100644
--- a/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.h
+++ b/libtransport/src/hicn/transport/protocols/manifest_indexing_manager.h
@@ -59,17 +59,20 @@ class ManifestIndexManager : public IncrementalIndexManager,
protected:
SuffixQueue suffix_queue_;
- SuffixQueue::iterator next_reassembly_segment_;
SuffixQueue::iterator next_to_retrieve_segment_;
+ utils::SuffixManifest suffix_manifest_;
+ utils::SuffixContent next_reassembly_segment_;
+
+ // Holds segments that should not be requested. Useful when
+ // computing the next reassembly segment because some manifests
+ // may be incomplete.
+ std::vector<uint32_t> ignored_segments_;
// Hash verification
std::unordered_map<uint32_t,
std::pair<std::vector<uint8_t>, core::HashAlgorithm>>
suffix_hash_map_;
- // Manifest Suffix
- utils::SuffixManifest suffix_manifest_;
-
// (temporary) To call scheduleNextInterests() after receiving a manifest
TransportProtocol *next_interest_;
};
diff --git a/libtransport/src/hicn/transport/protocols/reassembly.h b/libtransport/src/hicn/transport/protocols/reassembly.h
index b83aba2..e859ca2 100644
--- a/libtransport/src/hicn/transport/protocols/reassembly.h
+++ b/libtransport/src/hicn/transport/protocols/reassembly.h
@@ -70,7 +70,7 @@ class BaseReassembly : public Reassembly {
IndexVerificationManager *index_manager_;
std::unordered_map<std::uint32_t, ContentObject::Ptr> received_packets_;
- uint64_t index_;
+ uint32_t index_;
std::unique_ptr<utils::MemBuf> read_buffer_;
};