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/*
* Copyright (c) 2017-2019 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.
*/
#include <hicn/transport/utils/suffix_strategy.h>
using transport::core::NextSegmentCalculationStrategy;
namespace utils {
std::uint32_t SuffixManifest::getNextSuffix() {
uint32_t next_suffix;
switch (suffix_stragegy_) {
case NextSegmentCalculationStrategy::INCREMENTAL:
if (!nb_segments_) {
throw errors::RuntimeException(
"The number of segments in a manifest must be set "
"before assigning incremental suffixes.");
}
/* The current manifest's suffix + the number of segments in a */
/* manifest give the suffix of the last segment in the manifest. */
/* The next manifest's suffix is therefore that number plus one. */
next_suffix = suffix_ + nb_segments_ + 1;
break;
default:
throw errors::RuntimeException("Unknown suffix strategy.");
}
return next_suffix;
}
std::uint32_t SuffixContent::getNextSuffix() {
uint32_t next_suffix;
switch (suffix_stragegy_) {
case NextSegmentCalculationStrategy::INCREMENTAL:
next_suffix = suffix_ + 1;
if (making_manifest_) {
if (!nb_segments_) {
throw errors::RuntimeException(
"The number of segments in a manifest must be set "
"before assigning incremental suffixes.");
}
content_counter_++;
/* If the counter have reached the manifest's capacity,
* it means that the next suffix will be a manifest, so we skip it. */
if (content_counter_ % nb_segments_ == 0) {
next_suffix++;
content_counter_ = 0;
}
}
break;
default:
throw errors::RuntimeException("Unknown suffix strategy.");
}
return next_suffix;
}
} // namespace utils
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