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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <core/manifest_format.h>
#include <glog/logging.h>
#include <hicn/transport/core/content_object.h>
#include <hicn/transport/core/name.h>
#include <set>
namespace transport {
namespace core {
using typename core::Name;
using typename core::Packet;
using typename core::PayloadType;
template <typename Base, typename FormatTraits, typename ManifestImpl>
class Manifest : public Base {
static_assert(std::is_base_of<Packet, Base>::value,
"Base must inherit from packet!");
public:
// core::ContentObjectManifest::Ptr
using Encoder = typename FormatTraits::Encoder;
using Decoder = typename FormatTraits::Decoder;
Manifest(Packet::Format format, std::size_t signature_size = 0)
: Base(format, signature_size),
encoder_(*this, signature_size),
decoder_(*this) {
DCHECK(_is_ah(format));
Base::setPayloadType(PayloadType::MANIFEST);
}
Manifest(Packet::Format format, const core::Name &name,
std::size_t signature_size = 0)
: Base(name, format, signature_size),
encoder_(*this, signature_size),
decoder_(*this) {
DCHECK(_is_ah(format));
Base::setPayloadType(PayloadType::MANIFEST);
}
template <typename T>
Manifest(T &&base)
: Base(std::forward<T &&>(base)),
encoder_(*this, 0, false),
decoder_(*this) {
Base::setPayloadType(PayloadType::MANIFEST);
}
// Useful for decoding manifests while avoiding packet copy
template <typename T>
Manifest(T &base)
: Base(base.getFormat()), encoder_(base, 0, false), decoder_(base) {}
virtual ~Manifest() = default;
std::size_t estimateManifestSize(std::size_t additional_entries = 0) {
return static_cast<ManifestImpl &>(*this).estimateManifestSizeImpl(
additional_entries);
}
/*
* After the call to encode, users MUST call clear before adding data
* to the manifest.
*/
Manifest &encode() { return static_cast<ManifestImpl &>(*this).encodeImpl(); }
Manifest &decode() {
Manifest::decoder_.decode();
manifest_type_ = decoder_.getType();
manifest_transport_type_ = decoder_.getTransportType();
hash_algorithm_ = decoder_.getHashAlgorithm();
is_last_ = decoder_.getIsLast();
return static_cast<ManifestImpl &>(*this).decodeImpl();
}
static std::size_t manifestHeaderSize(
interface::ProductionProtocolAlgorithms transport_type =
interface::ProductionProtocolAlgorithms::UNKNOWN) {
return Encoder::manifestHeaderSize(transport_type);
}
static std::size_t manifestEntrySize() {
return Encoder::manifestEntrySize();
}
Manifest &setType(ManifestType type) {
manifest_type_ = type;
encoder_.setType(manifest_type_);
return *this;
}
Manifest &setHashAlgorithm(auth::CryptoHashType hash_algorithm) {
hash_algorithm_ = hash_algorithm;
encoder_.setHashAlgorithm(hash_algorithm_);
return *this;
}
auth::CryptoHashType getHashAlgorithm() const { return hash_algorithm_; }
ManifestType getType() const { return manifest_type_; }
interface::ProductionProtocolAlgorithms getTransportType() const {
return manifest_transport_type_;
}
bool getIsLast() const { return is_last_; }
Manifest &setVersion(ManifestVersion version) {
encoder_.setVersion(version);
return *this;
}
Manifest &setParamsBytestream(const ParamsBytestream ¶ms) {
manifest_transport_type_ =
interface::ProductionProtocolAlgorithms::BYTE_STREAM;
encoder_.setParamsBytestream(params);
return *this;
}
Manifest &setParamsRTC(const ParamsRTC ¶ms) {
manifest_transport_type_ =
interface::ProductionProtocolAlgorithms::RTC_PROD;
encoder_.setParamsRTC(params);
return *this;
}
ParamsBytestream getParamsBytestream() const {
return decoder_.getParamsBytestream();
}
ParamsRTC getParamsRTC() const { return decoder_.getParamsRTC(); }
ManifestVersion getVersion() const { return decoder_.getVersion(); }
Manifest &setIsLast(bool is_last) {
encoder_.setIsLast(is_last);
is_last_ = is_last;
return *this;
}
Manifest &clear() {
encoder_.clear();
decoder_.clear();
return *this;
}
protected:
ManifestType manifest_type_;
interface::ProductionProtocolAlgorithms manifest_transport_type_;
auth::CryptoHashType hash_algorithm_;
bool is_last_;
Encoder encoder_;
Decoder decoder_;
};
} // end namespace core
} // end namespace transport
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