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importPaths(): Optionally add NARs to binary cache accessor

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This enables an optimisation in hydra-queue-runner, preventing a
download of a NAR it just uploaded to the cache when reading files
like hydra-build-products.
This commit is contained in:
Eelco Dolstra 2016-02-26 15:20:10 +01:00
parent 00b2c05749
commit cca4a8dc1a
10 changed files with 58 additions and 44 deletions
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7
src/libstore/store-api.hh
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@ -227,8 +227,11 @@ public:
void exportPaths(const Paths & paths, bool sign, Sink & sink);
/* Import a sequence of NAR dumps created by exportPaths() into
the Nix store. */
virtual Paths importPaths(bool requireSignature, Source & source) = 0;
the Nix store. Optionally, the contents of the NARs are
preloaded into the specified FS accessor to speed up subsequent
access. */
virtual Paths importPaths(bool requireSignature, Source & source,
std::shared_ptr<FSAccessor> accessor) = 0;
/* For each path, if it's a derivation, build it. Building a
derivation means ensuring that the output paths are valid. If