Commit graph

86 commits

Author SHA1 Message Date
Eelco Dolstra 542ae5c8f8 BinaryCacheStore: Optionally write a NAR listing
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
2016-10-21 16:50:28 +02:00
Eelco Dolstra 629ab80022 importPaths(): Fix accessor support for Hydra 2016-10-07 18:13:40 +02:00
Eelco Dolstra 75989bdca7 Make computeFSClosure() single-threaded again
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.)
2016-09-16 18:54:14 +02:00
Shea Levy a705e8ce0a Factor a general remote FS accessor out of BinaryCacheStore 2016-09-02 14:24:34 -04:00
Eelco Dolstra 6cb4bdf152 FSAccessor: Throw InvalidPath 2016-08-10 18:05:35 +02:00
Eelco Dolstra ee22a91ab8 makeFixedOutputPath(): Drop superfluous HashType argument 2016-07-26 21:25:52 +02:00
Eelco Dolstra 7850d3d279 Make the store directory a member variable of Store 2016-06-01 16:24:17 +02:00
Eelco Dolstra c2d27d30cf nix-copy-closure / build-remote.pl: Disable signature checking
This restores the Nix 1.11 behaviour.
2016-05-31 11:48:05 +02:00
Eelco Dolstra e222484401 Re-implement the WantMassQuery property of binary caches 2016-05-30 15:18:12 +02:00
Eelco Dolstra 3be2e71ab3 BinaryCacheStore: Remove buildPaths() / ensurePath() 2016-05-30 15:18:12 +02:00
Eelco Dolstra 538a64e8c3 Add a Store::addToStore() variant that accepts a NAR
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 16:15:54 +02:00
Eelco Dolstra f435f82475 Remove OpenSSL-based signing 2016-05-04 11:01:48 +02:00
Eelco Dolstra 4dde0b0562 BinaryCacheStore: Support bzip2 compression 2016-04-29 17:43:37 +02:00
Eelco Dolstra 0dd988d2e3 Better error message 2016-04-29 17:33:22 +02:00
Eelco Dolstra 5acb691402 BinaryCacheStore: Support "none" compression method 2016-04-29 17:02:57 +02:00
Eelco Dolstra 8e065c6b3e BinaryCacheStore: Make the signing key a parameter 2016-04-29 16:47:20 +02:00
Eelco Dolstra f6aee2f477 BinaryCacheStore::queryPathInfo: Don't check signatures
Other stores don't do this either. It's up to the caller to check
signatures.
2016-04-29 16:28:57 +02:00
Eelco Dolstra ce5776758d Fix error message 2016-04-28 14:12:10 +02:00
Eelco Dolstra 0207272b28 BinaryCacheStore: When adding a path, ensure the references are valid
This prevents copying a partial closure to a binary cache.
2016-04-22 12:15:06 +02:00
Eelco Dolstra 7d14f5c331 Implement S3BinaryCacheStore::queryAllValidPaths()
This allows commands like "nix verify --all" or "nix path-info --all"
to work on S3 caches.

Unfortunately, this requires some ugly hackery: when querying the
contents of the bucket, we don't want to have to read every .narinfo
file. But the S3 bucket keys only include the hash part of each store
path, not the name part. So as a special exception
queryAllValidPaths() can now return store paths *without* the name
part, and queryPathInfo() accepts such store paths (returning a
ValidPathInfo object containing the full name).
2016-04-21 17:53:47 +02:00
Eelco Dolstra c0c4ddcd9c BinaryCacheStore: Insert new paths into the disk cache 2016-04-20 15:27:48 +02:00
Eelco Dolstra 451ebf24ce Cache path info lookups in SQLite
This re-implements the binary cache database in C++, allowing it to be
used by other Store backends, in particular the S3 backend.
2016-04-20 14:12:38 +02:00
Eelco Dolstra e0204f8d46 Move path info caching from BinaryCacheStore to Store
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().
2016-04-19 18:52:53 +02:00
Eelco Dolstra a7d8eaba54 BinaryCacheStore: Do negative caching of .narinfo lookups 2016-04-15 15:39:48 +02:00
Eelco Dolstra d1b0909894 BinaryCacheStore::readFile(): Return a shared_ptr to a string
This allows readFile() to indicate that a file doesn't exist, and
might eliminate some large string copying.
2016-04-15 15:39:48 +02:00
Eelco Dolstra bb1034316d Don't overload dumpPath() 2016-03-22 14:21:45 +01:00
Eelco Dolstra 712b616a84 Move signatures from NarInfo to ValidPathInfo
This allows queryPathInfo() to return signatures.
2016-03-21 18:05:47 +01:00
Eelco Dolstra 1c5f73f529 Add Store::dumpPath() method
This allows applying nix-store --verify-path to binary cache stores:

  NIX_REMOTE=https://cache.nixos.org nix-store --verify-path /nix/store/s5c7...
2016-03-21 17:55:57 +01:00
Eelco Dolstra e7c76f7274 BinaryCacheStore::isValidPath(): Use .narinfo cache
If a path is in the .narinfo cache, obviously it's valid.
2016-03-14 12:33:06 +01:00
Eelco Dolstra af7cdb1096 BinaryCacheStore: Remove publicKeyFile argument
The public key can be derived from the secret key, so there's no need
for the user to supply it separately.
2016-03-04 17:45:22 +01:00
Eelco Dolstra 42bc395b63 Eliminate some large string copying 2016-03-04 16:49:56 +01:00
Eelco Dolstra bcc9943cee importPaths(): Optionally add NARs to binary cache accessor
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.
2016-02-26 15:20:10 +01:00
Eelco Dolstra 1042c10fd0 Add NAR / Store accessor abstraction
This is primary to allow hydra-queue-runner to extract files like
"nix-support/hydra-build-products" from NARs in binary caches.
2016-02-25 17:43:19 +01:00
Eelco Dolstra 9ccbd55c5b BinaryCacheStore: Implement addToStore()
So now you can do

  $ NIX_REMOTE=file:///tmp/binary-cache nix-instantiate '<nixpkgs>' -A hello

and lots of other operations.
2016-02-24 16:52:28 +01:00
Eelco Dolstra ba0a81d14f Show a proper error message for unimplemented binary cache operations 2016-02-24 14:57:30 +01:00
Eelco Dolstra 263187a2ec Move BinaryCacheStore / LocalBinaryCacheStore from Hydra
So you can now do:

  $ NIX_REMOTE=file:///tmp/binary-cache nix-store -qR /nix/store/...
2016-02-24 14:48:16 +01:00