forked from lix-project/lix
22afa8fb4d
Rework the `Store` hierarchy so that there's now one hierarchy for the
store configs and one for the implementations (where each implementation
extends the corresponding config). So a class hierarchy like
```
StoreConfig-------->Store
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v v
SubStoreConfig----->SubStore
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v v
SubSubStoreConfig-->SubSubStore
```
(with virtual inheritance to prevent DDD).
The advantage of this architecture is that we can now introspect the configuration of a store without having to instantiate the store itself
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
#include "store-api.hh"
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namespace nix {
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struct DummyStoreConfig : StoreConfig {};
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struct DummyStore : public Store
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{
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DummyStore(const std::string uri, const Params & params)
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: DummyStore(params)
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{ }
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DummyStore(const Params & params)
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: Store(params)
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{ }
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string getUri() override
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{
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return uriPrefixes()[0] + "://";
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}
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void queryPathInfoUncached(const StorePath & path,
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Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override
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{
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callback(nullptr);
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}
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static std::vector<std::string> uriPrefixes() {
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return {"dummy"};
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}
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std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override
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{ unsupported("queryPathFromHashPart"); }
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void addToStore(const ValidPathInfo & info, Source & source,
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RepairFlag repair, CheckSigsFlag checkSigs) override
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{ unsupported("addToStore"); }
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StorePath addToStore(const string & name, const Path & srcPath,
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FileIngestionMethod method, HashType hashAlgo,
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PathFilter & filter, RepairFlag repair) override
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{ unsupported("addToStore"); }
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StorePath addTextToStore(const string & name, const string & s,
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const StorePathSet & references, RepairFlag repair) override
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{ unsupported("addTextToStore"); }
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void narFromPath(const StorePath & path, Sink & sink) override
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{ unsupported("narFromPath"); }
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void ensurePath(const StorePath & path) override
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{ unsupported("ensurePath"); }
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BuildResult buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
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BuildMode buildMode) override
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{ unsupported("buildDerivation"); }
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};
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static RegisterStoreImplementation<DummyStore, DummyStoreConfig> regStore;
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}
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