diff options
Diffstat (limited to 'libtransport/src/hicn/transport/utils/suffix_strategy.cc')
-rw-r--r-- | libtransport/src/hicn/transport/utils/suffix_strategy.cc | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/libtransport/src/hicn/transport/utils/suffix_strategy.cc b/libtransport/src/hicn/transport/utils/suffix_strategy.cc new file mode 100644 index 000000000..f3bcc4562 --- /dev/null +++ b/libtransport/src/hicn/transport/utils/suffix_strategy.cc @@ -0,0 +1,73 @@ +/* + * 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 |