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Add NAR / Store accessor abstraction

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This is primary to allow hydra-queue-runner to extract files like
"nix-support/hydra-build-products" from NARs in binary caches.
This commit is contained in:
Eelco Dolstra 2016-02-25 17:43:19 +01:00
parent 152b1d6bf9
commit 1042c10fd0
11 changed files with 352 additions and 13 deletions
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12
src/libstore/store-api.hh
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@ -140,9 +140,10 @@ struct BuildResult
struct BasicDerivation;
struct Derivation;
struct FSAccessor;
class Store
class Store : public std::enable_shared_from_this<Store>
{
public:
@ -314,6 +315,9 @@ public:
remain. */
virtual bool verifyStore(bool checkContents, bool repair) = 0;
/* Return an object to access files in the Nix store. */
virtual ref<FSAccessor> getFSAccessor() = 0;
/* Utility functions. */
/* Read a derivation, after ensuring its existence through
@ -345,6 +349,12 @@ public:
};
class LocalFSStore : public Store
{
ref<FSAccessor> getFSAccessor() override;
};
/* !!! These should be part of the store API, I guess. */
/* Throw an exception if `path' is not directly in the Nix store. */