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Provide default implementations for a couple of Store methods

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This commit is contained in:
Eelco Dolstra 2017-02-07 19:22:48 +01:00
parent ddb5577f2e
commit fa07558a06
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GPG key ID: 8170B4726D7198DE
4 changed files with 20 additions and 26 deletions
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14
src/libstore/store-api.hh
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@ -320,7 +320,7 @@ public:
protected:
virtual bool isValidPathUncached(const Path & path) = 0;
virtual bool isValidPathUncached(const Path & path);
public:
@ -360,7 +360,7 @@ public:
output. (Note that the result of `queryDeriver()' is the
derivation that was actually used to produce `path', which may
not exist anymore.) */
virtual PathSet queryValidDerivers(const Path & path) = 0;
virtual PathSet queryValidDerivers(const Path & path) { return {}; };
/* Query the outputs of the derivation denoted by `path'. */
virtual PathSet queryDerivationOutputs(const Path & path) = 0;
@ -373,13 +373,13 @@ public:
virtual Path queryPathFromHashPart(const string & hashPart) = 0;
/* Query which of the given paths have substitutes. */
virtual PathSet querySubstitutablePaths(const PathSet & paths) = 0;
virtual PathSet querySubstitutablePaths(const PathSet & paths) { return {}; };
/* Query substitute info (i.e. references, derivers and download
sizes) of a set of paths. If a path does not have substitute
info, it's omitted from the resulting ‘infos’ map. */
virtual void querySubstitutablePathInfos(const PathSet & paths,
SubstitutablePathInfos & infos) = 0;
SubstitutablePathInfos & infos) { return; };
virtual bool wantMassQuery() { return false; }
@ -454,7 +454,7 @@ public:
permanent root and sees our's.
In either case the permanent root is seen by the collector. */
virtual void syncWithGC() = 0;
virtual void syncWithGC() { };
/* Find the roots of the garbage collector. Each root is a pair
(link, storepath) where `link' is the path of the symlink
@ -485,11 +485,11 @@ public:
/* Optimise the disk space usage of the Nix store by hard-linking files
with the same contents. */
virtual void optimiseStore() = 0;
virtual void optimiseStore() { };
/* Check the integrity of the Nix store. Returns true if errors
remain. */
virtual bool verifyStore(bool checkContents, bool repair) = 0;
virtual bool verifyStore(bool checkContents, bool repair) { return false; };
/* Return an object to access files in the Nix store. */
virtual ref<FSAccessor> getFSAccessor() = 0;