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path: root/tvix/glue/src/builtins/fetchers.rs
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2024-06-26 r/8315 fix(tvix/glue): reject unknown attrset args for fetch builtinsFlorian Klink1-1/+8
This now uses UnexpectedArgumentBuiltin in case builtins.fetchurl or builtins.fetchTarball are called with the wrong arguments: ``` note: while evaluating this Nix code --> [code]:1:1 | 1 | builtins.readDir (builtins.fetchTarball { url = "https://git"; hash = "sha1-NKNeU1csW5YJ4lCeWH3Z/apppNU=";}) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E040]: Unexpected agrument `"hash"` passed to builtin --> [code]:1:19 | 1 | builtins.readDir (builtins.fetchTarball { url = "https://git"; hash = "sha1-NKNeU1csW5YJ4lCeWH3Z/apppNU=";}) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ while calling this builtin ``` Change-Id: I51124255a46b78d3cf4dc89a1eca9e68750858d4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11878 Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com> Reviewed-by: flokli <flokli@flokli.de> Reviewed-by: Simon Hauser <simon.hauser@helsinki-systems.de> Tested-by: BuildkiteCI
2024-06-26 r/8307 refactor(tvix/glue): return a parsed Url in NixFetchArgsFlorian Klink1-20/+16
The only two consumers (fetchurl, fetchtarball) of these do try to parse it as URL, so do it in the helper. Update url_basename to take a &url::URL, not a &str. Also update the test to use rstest for the fixtures to reduce some boilerplate there. Change-Id: I1f85fe2803060dc4423e673cb7b9f9bf799d09b9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11875 Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com> Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2024-06-13 r/8259 feat(tvix/glue): report progress on all fetches, use progress barsFlorian Klink1-3/+0
This should also report progress on fetches which we couldn't delay until actually having to IO into them, like `builtins.fetchurl` calls without a upfront-provided hash. While at it, upgrade the progress spinners to progress bars, which increment if we know the size of the fetch. Change-Id: Ic3f332286d8bc2177f3d994ba25b165728d4b702 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11797 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: aspen <root@gws.fyi>
2024-06-12 r/8250 refactor(tvix/glue/fetchers): use named field for structsFlorian Klink1-3/+13
This allows giving more self-speaking names, as well as documenting each field individually. Change-Id: Ide164d684b7f819aac279cc8e657c02fc24d093f Reviewed-on: https://cl.tvl.fyi/c/depot/+/11786 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: Connor Brewster <cbrewster@hey.com>
2024-04-23 r/7996 feat(tvix/glue/fetchers): support file:// URLsFlorian Klink1-10/+26
Nix supports file:// - URLs for `fetchurl` and `fetchTarball`. Convert the enums and function arguments to hold a URL type. reqwest::Url is a re-export of the url crate, but they don't re-export the parsing errors, and as we want to hold these in our Error types, add it to Cargo.toml explicitly. The Fetcher::download function now checks on the scheme, and either opens the file locally, or does do a HTTP request as before. Fetch gets its custom debug impl, removing potentially sensitive username and password out of URLs. Change-Id: I777db1fe487370e822cbfec4624034aca5e08045 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11504 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2024-04-23 r/7994 feat(tvix/glue/store_io): have KnownPaths track fetches tooFlorian Klink1-5/+14
Have fetcher builtins call queue_fetch() whenever they don't need to fetch something immediately, and teach TvixStoreIO::store_path_to_node on how to look up (and call ingest_and persist on our Fetcher). Change-Id: Id4bd9d639fac9e4bee20c0b1c584148740b15c2f Reviewed-on: https://cl.tvl.fyi/c/depot/+/11501 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2024-04-23 r/7993 refactor(tvix/glue): move Fetch[er] into its own types, fetch lazilyFlorian Klink1-246/+109
We actually want to delay fetching until we actually need the file. A simple evaluation asking for `.outPath` or `.drvPath` should work even in a pure offline environment. Before this CL, the fetching logic was quite distributed between tvix_store_io, and builtins/fetchers.rs. Rather than having various functions and conversions between structs, describe a Fetch as an enum type, with the fields describing the fetch. Define a store_path() function on top of `Fetch` which can be used to ask for the calculated store path (if the digest has been provided upfront). Have a `Fetcher` struct, and give it a `fetch_and_persist` function, taking a `Fetch` as well as a desired name, and have it deal with all the logic of persisting the PathInfos. It also returns a StorePathRef, similar to the `.store_path()` method on a `Fetch` struct. In a followup CL, we can extend KnownPaths to track fetches AND derivations, and then use `Fetcher` when we need to do IO into that store path. Change-Id: Ib39a96baeb661750a8706b461f8ba4abb342e777 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11500 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-04-20 r/7983 feat(tvix/eval): Implement builtins.fetchTarballAspen Smith1-6/+15
Implement a first pass at the fetchTarball builtin. This uses much of the same machinery as fetchUrl, but has the extra complexity that tarballs have to be extracted and imported as store paths (into the directory- and blob-services) before hashing. That's reasonably involved due to the structure of those two services. This is (unfortunately) not easy to test in an automated way, but I've tested it manually for now and it seems to work: tvix-repl> (import ../. {}).third_party.nixpkgs.hello.outPath => "/nix/store/dbghhbq1x39yxgkv3vkgfwbxrmw9nfzi-hello-2.12.1" :: string Co-authored-by: Connor Brewster <cbrewster@hey.com> Change-Id: I57afc6b91bad617a608a35bb357861e782a864c8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11020 Autosubmit: aspen <root@gws.fyi> Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-04-13 r/7890 feat(tvix/nix-compat): implement Serialize, Deserialize for NixHashFlorian Klink1-1/+1
We use the (slightly more tolerant) from_str to deserialize, and serialize out as SRI. Change-Id: If76b0ed2d4e243904f02df34f6c90b976c0bab8c Reviewed-on: https://cl.tvl.fyi/c/depot/+/11393 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2024-03-11 r/7678 feat(tvix/glue): Implement builtins.fetchurlAspen Smith1-5/+252
Implement the fetchurl builtin, and lay the groundwork for implementing the fetchTarball builtin (which works very similarly, and is implemented using almost the same code in C++ nix). An overview of how this works: 1. First, we check if the store path that *would* result from the download already exists in the store - if it does, we just return that 2. If we need to download the URL, TvixStoreIO has an `http_client: reqwest::Client` field now which we use to make the request 3. As we're downloading the blob, we hash the data incrementally into a SHA256 hasher 4. We compare the hash against the expected hash (if any) and bail out if it doesn't match 5. Finally, we put the blob in the store and return the store path Since the logic is very similar, this commit also implements a *chunk* of `fetchTarball` (though the actual implementation will likely include a refactor to some of the code reuse here). The main thing that's missing here is caching of downloaded blobs when fetchurl is called without a hash - I've opened b/381 to track the TODO there. Adding the `SSL_CERT_FILE` here is necessary to teach reqwest how to load it during tests - see 1c16dee20 (feat(tvix/store): use reqwests' rustls-native-roots feature, 2024-03-03) for more info. Change-Id: I83c4abbc7c0c3bfe92461917e23d6d3430fbf137 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11017 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de> Autosubmit: aspen <root@gws.fyi>
2024-02-19 r/7557 feat(tvix/glue): Init fetcher builtinsAspen Smith1-0/+42
Initialize a new empty builtins module `fetcher_builtins`, which will contain the builtins which fetch URLs from the internet: * fetchurl * fetchGit * fetchTarball * fetchTree (maybe? this is experimental) These builtins are all implemented in CPP nix at: https://github.com/NixOS/nix/blob/2.20.2/src/libexpr/primops/fetchTree.cc These builtins are added to the evaluation context using a similar mechanism to the derivation builtins, and have been added everywhere derivation builtins were previously being added. Change-Id: I133b91cc9560f23028621414537f712e7bd8a825 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10974 Autosubmit: aspen <root@gws.fyi> Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI