Provide default implementations for a couple of Store methods
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@ -71,9 +71,6 @@ public:
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PathSet & referrers) override
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{ notImpl(); }
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PathSet queryValidDerivers(const Path & path) override
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{ return {}; }
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PathSet queryDerivationOutputs(const Path & path) override
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{ notImpl(); }
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@ -83,13 +80,6 @@ public:
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Path queryPathFromHashPart(const string & hashPart) override
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{ notImpl(); }
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PathSet querySubstitutablePaths(const PathSet & paths) override
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{ return {}; }
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void querySubstitutablePathInfos(const PathSet & paths,
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SubstitutablePathInfos & infos) override
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{ }
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bool wantMassQuery() override { return wantMassQuery_; }
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void addToStore(const ValidPathInfo & info, const ref<std::string> & nar,
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@ -121,21 +111,12 @@ public:
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void addIndirectRoot(const Path & path) override
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{ notImpl(); }
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void syncWithGC() override
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{ }
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Roots findRoots() override
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{ notImpl(); }
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void collectGarbage(const GCOptions & options, GCResults & results) override
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{ notImpl(); }
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void optimiseStore() override
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{ }
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bool verifyStore(bool checkContents, bool repair) override
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{ return true; }
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ref<FSAccessor> getFSAccessor() override;
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void addSignatures(const Path & storePath, const StringSet & sigs) override
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@ -285,6 +285,19 @@ bool Store::isValidPath(const Path & storePath)
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}
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/* Default implementation for stores that only implement
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queryPathInfoUncached(). */
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bool Store::isValidPathUncached(const Path & path)
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{
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try {
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queryPathInfo(path);
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return true;
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} catch (InvalidPath &) {
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return false;
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}
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}
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ref<const ValidPathInfo> Store::queryPathInfo(const Path & storePath)
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{
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std::promise<ref<ValidPathInfo>> promise;
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@ -320,7 +320,7 @@ public:
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protected:
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virtual bool isValidPathUncached(const Path & path) = 0;
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virtual bool isValidPathUncached(const Path & path);
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public:
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@ -360,7 +360,7 @@ public:
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output. (Note that the result of `queryDeriver()' is the
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derivation that was actually used to produce `path', which may
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not exist anymore.) */
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virtual PathSet queryValidDerivers(const Path & path) = 0;
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virtual PathSet queryValidDerivers(const Path & path) { return {}; };
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/* Query the outputs of the derivation denoted by `path'. */
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virtual PathSet queryDerivationOutputs(const Path & path) = 0;
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@ -373,13 +373,13 @@ public:
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virtual Path queryPathFromHashPart(const string & hashPart) = 0;
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/* Query which of the given paths have substitutes. */
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virtual PathSet querySubstitutablePaths(const PathSet & paths) = 0;
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virtual PathSet querySubstitutablePaths(const PathSet & paths) { return {}; };
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/* Query substitute info (i.e. references, derivers and download
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sizes) of a set of paths. If a path does not have substitute
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info, it's omitted from the resulting ‘infos’ map. */
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virtual void querySubstitutablePathInfos(const PathSet & paths,
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SubstitutablePathInfos & infos) = 0;
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SubstitutablePathInfos & infos) { return; };
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virtual bool wantMassQuery() { return false; }
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@ -454,7 +454,7 @@ public:
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permanent root and sees our's.
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In either case the permanent root is seen by the collector. */
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virtual void syncWithGC() = 0;
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virtual void syncWithGC() { };
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/* Find the roots of the garbage collector. Each root is a pair
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(link, storepath) where `link' is the path of the symlink
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@ -485,11 +485,11 @@ public:
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/* Optimise the disk space usage of the Nix store by hard-linking files
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with the same contents. */
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virtual void optimiseStore() = 0;
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virtual void optimiseStore() { };
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/* Check the integrity of the Nix store. Returns true if errors
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remain. */
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virtual bool verifyStore(bool checkContents, bool repair) = 0;
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virtual bool verifyStore(bool checkContents, bool repair) { return false; };
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/* Return an object to access files in the Nix store. */
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virtual ref<FSAccessor> getFSAccessor() = 0;
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