45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
#include "OnDiskBlock.h"
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#include "OnDiskBlockStore.h"
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using std::string;
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using cpputils::Data;
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using cpputils::unique_ref;
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using boost::optional;
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using boost::none;
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namespace bf = boost::filesystem;
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namespace blockstore {
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namespace ondisk {
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OnDiskBlockStore::OnDiskBlockStore(const boost::filesystem::path &rootdir)
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: _rootdir(rootdir) {}
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//TODO Do I have to lock tryCreate/remove and/or load? Or does ParallelAccessBlockStore take care of that?
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optional<unique_ref<Block>> OnDiskBlockStore::tryCreate(const Key &key, Data data) {
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//TODO Easier implementation? This is only so complicated because of the cast OnDiskBlock -> Block
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auto result = std::move(OnDiskBlock::CreateOnDisk(_rootdir, key, std::move(data)));
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if (result == boost::none) {
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return boost::none;
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}
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return unique_ref<Block>(std::move(*result));
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}
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optional<unique_ref<Block>> OnDiskBlockStore::load(const Key &key) {
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return optional<unique_ref<Block>>(OnDiskBlock::LoadFromDisk(_rootdir, key));
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}
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void OnDiskBlockStore::remove(unique_ref<Block> block) {
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Key key = block->key();
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cpputils::destruct(std::move(block));
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OnDiskBlock::RemoveFromDisk(_rootdir, key);
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}
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uint64_t OnDiskBlockStore::numBlocks() const {
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return std::distance(bf::directory_iterator(_rootdir), bf::directory_iterator());
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}
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}
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}
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