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path: root/src/libstore/binary-cache-store.hh
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2019-09-03 Add some noexceptsEelco Dolstra1-2/+2
This is to assert that callback functions should never throw (since the context in which they're called may not be able to handle the exception).
2019-01-18 unsupported(): Show the name of the unsupported operationEelco Dolstra1-28/+3
2018-05-30 Make LocalBinaryCacheStore::narFromPath() run in constant memoryEelco Dolstra1-3/+11
This reduces memory consumption of nix copy --from file://... --to ~/my-nix /nix/store/95cwv4q54dc6giaqv6q6p4r02ia2km35-blender-2.79 from 514 MiB to 18 MiB for an uncompressed binary cache, and from 192 MiB to 53 MiB for a bzipped binary cache. It may also be faster because fetching can happen concurrently with decompression/writing. Continuation of 48662d151bdf4a38670897beacea9d1bd750376a. Issue https://github.com/NixOS/nix/issues/1681.
2018-05-30 Simplify the callback mechanismEelco Dolstra1-4/+2
2018-02-07 move the parallel-compression setting to binary-cache-store, the settingAmineChikhaoui1-0/+2
can be done now from the url e.g s3://nix-cache?parallel-compression=1 instead of nix.conf.
2017-11-14 nix sign-paths: Support binary cachesEelco Dolstra1-2/+3
2017-10-17 BinaryCacheStore: Support local caching of NARsEelco Dolstra1-0/+1
This speeds up commands like "nix cat-store". For example: $ time nix cat-store --store https://cache.nixos.org?local-nar-cache=/tmp/nar-cache /nix/store/i60yncmq6w9dyv37zd2k454g0fkl3arl-systemd-234/etc/udev/udev.conf real 0m4.336s $ time nix cat-store --store https://cache.nixos.org?local-nar-cache=/tmp/nar-cache /nix/store/i60yncmq6w9dyv37zd2k454g0fkl3arl-systemd-234/etc/udev/udev.conf real 0m0.045s The primary motivation is to allow hydra-server to serve files from S3 binary caches. Previously Hydra had a hack to do "nix-store -r <path>", but that fetches the entire closure so is prohibitively expensive. There is no garbage collection of the NAR cache yet. Also, the entire NAR is read when accessing a single member file. We could generate the NAR listing to provide random access. Note: the NAR cache is indexed by the store path hash, not the content hash, so NAR caches should not be shared between binary caches, unless you're sure that all your builds are binary-reproducible.
2017-07-04 Sort substituters by priorityEelco Dolstra1-0/+2
Fixes #1438.
2017-07-03 Replace a few bool flags with enumsEelco Dolstra1-3/+3
Functions like copyClosure() had 3 bool arguments, which creates a severe risk of mixing up arguments. Also, implement copyClosure() using copyPaths().
2017-05-01 Add a dummy Store::buildPaths() methodEelco Dolstra1-17/+12
This default implementation of buildPaths() does nothing if all requested paths are already valid, and throws an "unsupported operation" error otherwise. This fixes a regression introduced by c30330df6f67c81986dfb124631bc756c8e58c0d in binary cache and legacy SSH stores.
2017-04-13 Add a Config class to simplify adding configuration settingsEelco Dolstra1-4/+6
The typical use is to inherit Config and add Setting<T> members: class MyClass : private Config { Setting<int> foo{this, 123, "foo", "the number of foos to use"}; Setting<std::string> bar{this, "blabla", "bar", "the name of the bar"}; MyClass() : Config(readConfigFile("/etc/my-app.conf")) { std::cout << foo << "\n"; // will print 123 unless overriden } }; Currently, this is used by Store and its subclasses for store parameters. You now get a warning if you specify a non-existant store parameter in a store URI.
2017-03-15 S3BinaryCacheStore: Set Content-TypeEelco Dolstra1-1/+3
This is necessary for serving log files to browsers.
2017-03-15 BinaryCacheStore: Implement getBuildLog()Eelco Dolstra1-0/+2
We assume that build logs are stored under log/<drv>, e.g. /nix/store/q7ab198v13p0f8x8wgnd75dva7d5mip6-friday-devil-0.1.1.1.drv maps to https://cache.nixos.org/log/q7ab198v13p0f8x8wgnd75dva7d5mip6-friday-devil-0.1.1.1.drv
2017-02-07 Provide default implementations for a couple of Store methodsEelco Dolstra1-19/+0
2017-02-07 CleanupEelco Dolstra1-2/+0
2016-10-21 Remove addPathToAccessorEelco Dolstra1-10/+7
2016-10-21 BinaryCacheStore: Optionally write a NAR listingEelco Dolstra1-1/+7
The store parameter "write-nar-listing=1" will cause BinaryCacheStore to write a file ‘<store-hash>.ls.xz’ for each ‘<store-hash>.narinfo’ added to the binary cache. This file contains an XZ-compressed JSON file describing the contents of the NAR, excluding the contents of regular files. E.g. { "version": 1, "root": { "type": "directory", "entries": { "lib": { "type": "directory", "entries": { "Mcrt1.o": { "type": "regular", "size": 1288 }, "Scrt1.o": { "type": "regular", "size": 3920 }, } } } ... } } (The actual file has no indentation.) This is intended to speed up the NixOS channels programs index generator [1], since fetching gazillions of large NARs from cache.nixos.org is currently a bottleneck for updating the regular (non-small) channel. [1] https://github.com/NixOS/nixos-channel-scripts/blob/master/generate-programs-index.cc
2016-10-07 Implement generic Store::queryValidPaths()Eelco Dolstra1-3/+0
2016-10-07 importPaths(): Fix accessor support for HydraEelco Dolstra1-0/+6
2016-09-16 Make computeFSClosure() single-threaded againEelco Dolstra1-2/+8
The fact that queryPathInfo() is synchronous meant that we needed a thread for every concurrent binary cache lookup, even though they end up being handled by the same download thread. Requiring hundreds of threads is not a good idea. So now there is an asynchronous version of queryPathInfo() that takes a callback function to process the result. Similarly, enqueueDownload() now takes a callback rather than returning a future. Thus, a command like nix path-info --store https://cache.nixos.org/ -r /nix/store/slljrzwmpygy1daay14kjszsr9xix063-nixos-16.09beta231.dccf8c5 that returns 4941 paths now takes 1.87s using only 2 threads (the main thread and the downloader thread). (This is with a prewarmed CloudFront.)
2016-06-01 Make the store directory a member variable of StoreEelco Dolstra1-1/+1
2016-05-31 Shut up some clang warningsEelco Dolstra1-3/+3
2016-05-31 nix-copy-closure / build-remote.pl: Disable signature checkingEelco Dolstra1-1/+1
This restores the Nix 1.11 behaviour.
2016-05-30 Re-implement the WantMassQuery property of binary cachesEelco Dolstra1-0/+5
2016-05-30 BinaryCacheStore: Remove buildPaths() / ensurePath()Eelco Dolstra1-7/+7
2016-05-04 Add a Store::addToStore() variant that accepts a NAREelco Dolstra1-9/+3
As a side effect, this ensures that signatures are propagated when copying paths between stores. Also refactored import/export to make use of this.
2016-05-04 Remove OpenSSL-based signingEelco Dolstra1-2/+2
2016-04-29 BinaryCacheStore: Support "none" compression methodEelco Dolstra1-1/+3
2016-04-29 BinaryCacheStore: Make the signing key a parameterEelco Dolstra1-1/+2
2016-04-29 BinaryCacheStore::queryPathInfo: Don't check signaturesEelco Dolstra1-1/+0
Other stores don't do this either. It's up to the caller to check signatures.
2016-04-19 Move path info caching from BinaryCacheStore to StoreEelco Dolstra1-42/+2
Caching path info is generally useful. For instance, it speeds up "nix path-info -rS /run/current-system" (i.e. showing the closure sizes of all paths in the closure of the current system) from 5.6s to 0.15s. This also eliminates some APIs like Store::queryDeriver() and Store::queryReferences().
2016-04-15 Make the .narinfo cache biggerEelco Dolstra1-1/+1
2016-04-15 BinaryCacheStore: Do negative caching of .narinfo lookupsEelco Dolstra1-1/+2
2016-04-15 BinaryCacheStore::readFile(): Return a shared_ptr to a stringEelco Dolstra1-1/+3
This allows readFile() to indicate that a file doesn't exist, and might eliminate some large string copying.
2016-04-08 Remove failed build cachingEelco Dolstra1-6/+0
This feature was implemented for Hydra, but Hydra no longer uses it.
2016-04-05 Add "nix copy-sigs" commandEelco Dolstra1-0/+3
This imports signatures from one store into another. E.g. $ nix copy-sigs -r /run/current-system -s https://cache.nixos.org/ imported 595 signatures
2016-03-22 Don't overload dumpPath()Eelco Dolstra1-1/+1
2016-03-21 Add Store::dumpPath() methodEelco Dolstra1-0/+2
This allows applying nix-store --verify-path to binary cache stores: NIX_REMOTE=https://cache.nixos.org nix-store --verify-path /nix/store/s5c7...
2016-03-04 BinaryCacheStore: Remove publicKeyFile argumentEelco Dolstra1-2/+1
The public key can be derived from the secret key, so there's no need for the user to supply it separately.
2016-02-26 importPaths(): Optionally add NARs to binary cache accessorEelco Dolstra1-2/+3
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.
2016-02-25 Add NAR / Store accessor abstractionEelco Dolstra1-2/+3
This is primary to allow hydra-queue-runner to extract files like "nix-support/hydra-build-products" from NARs in binary caches.
2016-02-24 BinaryCacheStore: Implement addToStore()Eelco Dolstra1-8/+8
So now you can do $ NIX_REMOTE=file:///tmp/binary-cache nix-instantiate '<nixpkgs>' -A hello and lots of other operations.
2016-02-24 Show a proper error message for unimplemented binary cache operationsEelco Dolstra1-17/+19
2016-02-24 Move BinaryCacheStore / LocalBinaryCacheStore from HydraEelco Dolstra1-0/+170
So you can now do: $ NIX_REMOTE=file:///tmp/binary-cache nix-store -qR /nix/store/...
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