Commit graph

479 commits

Author SHA1 Message Date
jade 370ac940dd refactor: make HashType and Base enum classes for type safety
Change-Id: I9fbd55a9d50464a56fe11cb42a06a206914150d8
2024-08-08 14:53:17 -07:00
eldritch horrors 6b4d46e9e0 libstore: remove WriteConn::sink fields
we no longer need these since we're no longer using sinks to serialize things.

Change-Id: Iffb1a3eab33c83f611c88fa4e8beaa8d5ffa079b
2024-07-16 00:57:42 +00:00
eldritch horrors a5d1f69841 libstore: generatorize protocol serializers
this is cursed. deeply and profoundly cursed. under NO CIRCUMSTANCES
must protocol serializer helpers be applied to temporaries! doing so
will inevitably cause dangling references and cause the entire thing
to crash. we need to do this even so to get rid of boost coroutines,
and likewise to encapsulate the serializers we suffer today at least
a little bit to allow a gradual migration to an actual IPC protocol.

(this isn't a problem that's unique to generators. c++ coroutines in
general cannot safely take references to arbitrary temporaries since
c++ does not have a lifetime system that can make this safe. -sigh-)

Change-Id: I2921ba451e04d86798752d140885d3c5cc08e146
2024-07-16 00:57:42 +00:00
eldritch horrors 3447dbfb2c libstore: rewrite narFromPath as generator
Change-Id: Ifa783c2c65c06ddd1d0212016d5bfd07666ea91c
2024-07-15 21:50:25 +00:00
eldritch horrors 06220a71c1 libstore: convert dumpPath to a generator
Change-Id: Ic4cf5562504aa29130304469936f958c0426e5ef
2024-07-05 22:28:16 +00:00
Tom Hubrecht a39ba22ff7 util.hh: Delete remaining file and clean up headers
Change-Id: Ic1f68e6af658e94ef7922841dd3ad4c69551ef56
2024-05-29 12:38:51 +02:00
eldritch horrors 08252967a8 libexpr: Support structured error classes
While preparing PRs like #9753, I've had to change error messages in
dozens of code paths. It would be nice if instead of

    EvalError("expected 'boolean' but found '%1%'", showType(v))

we could write

    TypeError(v, "boolean")

or similar. Then, changing the error message could be a mechanical
refactor with the compiler pointing out places the constructor needs to
be changed, rather than the error-prone process of grepping through the
codebase. Structured errors would also help prevent the "same" error
from having multiple slightly different messages, and could be a first
step towards error codes / an error index.

This PR reworks the exception infrastructure in `libexpr` to
support exception types with different constructor signatures than
`BaseError`. Actually refactoring the exceptions to use structured data
will come in a future PR (this one is big enough already, as it has to
touch every exception in `libexpr`).

The core design is in `eval-error.hh`. Generally, errors like this:

    state.error("'%s' is not a string", getAttrPathStr())
      .debugThrow<TypeError>()

are transformed like this:

    state.error<TypeError>("'%s' is not a string", getAttrPathStr())
      .debugThrow()

The type annotation has moved from `ErrorBuilder::debugThrow` to
`EvalState::error`.

(cherry picked from commit c6a89c1a1659b31694c0fbcd21d78a6dd521c732)
Change-Id: Iced91ba4e00ca9e801518071fb43798936cbd05a
2024-03-09 04:47:05 -07:00
eldritch horrors 8a268359b0 Merge pull request #9560 from obsidiansystems/serve-proto-unkeyed-valid-path-info-serializer
Factor out `ServeProto::Serialiser<UnkeyedValidPathInfo>` and test

(cherry picked from commit 139982997eec493a0f74105c427953f6be77da6d)
Change-Id: I28e4ba5a681a90d81915a56e6dbaa5456d64f96d
2024-03-07 12:37:33 +01:00
eldritch horrors 7f590ea709 Merge pull request #6223 from obsidiansystems/worker-proto-with-version
Give `nix daemon` and `nix-store --serve` protocols separate serializers with version info

(cherry picked from commit 8b68bbb77745fda0d14939b6c23d31cc89da41ce)
Change-Id: Ia3d3b9fbaf9f0ae62ab225020b7d14790e793655
2024-03-04 04:59:31 +01:00
Robert Hensing ab40b2c5d0 Merge pull request #9157 from obsidiansystems/protocol-versions
Add protocol versions to `{Worker,Serve}Proto::*Conn`

(cherry picked from commit 4d17c59d8d059a5b39f1d1da2b58f2ec8da44861)
Change-Id: I497af39deb792e50c157a1305d8c9e722798740b
2024-03-04 04:43:35 +01:00
eldritch horrors e12e9f2452 Merge pull request #9137 from obsidiansystems/serve-protocol
Introduce separate Serve protocol serialisers

(cherry picked from commit d070d8b7460f412a657745698dba291c66792402)
Change-Id: Ibcc8639e8997bcd07f7a5318330a147bcadc411b
2024-03-04 04:37:05 +01:00
eldritch horrors 6897e238bd Merge pull request #9099 from obsidiansystems/common-proto
Factor out bits of the worker protocol to use elsewhere

(cherry picked from commit 4b1a97338f517f45e6169d3d8845c5caa5724e97)
Change-Id: If93afa0f8b1cf9b0e705b34fa71e6fd708752758
2024-03-04 04:36:58 +01:00
Guillaume Girol 925a444b92 add nix-store --query --valid-derivers command
notably useful when nix-store --query --deriver returns a non-existing
path.

Co-authored-by: Felix Uhl <iFreilicht@users.noreply.github.com>
2023-08-24 11:37:24 +02:00
John Ericson 903700c5e1 Simplify ContentAddress
Whereas `ContentAddressWithReferences` is a sum type complex because different
varieties support different notions of reference, and
`ContentAddressMethod` is a nested enum to support that,
`ContentAddress` can be a simple pair of a method and hash.

`ContentAddress` does not need to be a sum type on the outside because
the choice of method doesn't effect what type of hashes we can use.

Co-Authored-By: Cale Gibbard <cgibbard@gmail.com>
2023-07-07 07:30:01 -04:00
John Ericson 9f69b7dee9 Create worker_proto::{Read,Write}Conn
Pass this around instead of `Source &` and `Sink &` directly. This will
give us something to put the protocol version on once the time comes.

To do this ergonomically, we need to expose `RemoteStore::Connection`,
so do that too. Give it some more API docs while we are at it.
2023-06-19 12:08:23 -04:00
John Ericson 4e8b495ad7 Likewise namespace and enum struct-ify ServeCommand
The motivation is exactly the same as for the last commit. In addition,
this anticipates us formally defining separate serialisers for the serve
protocol.
2023-06-19 12:08:23 -04:00
John Ericson 95eae0c002 Put worker protocol items inside a WorkerProto struct
See API docs on that struct for why. The pasing as as template argument
doesn't yet happen in that commit, but will instead happen in later
commit.

Also make `WorkerOp` (now `Op`) and enum struct. This led us to catch
that two operations were not handled!

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-06-19 12:08:23 -04:00
John Ericson 469d06f9bc Split out worker protocol template definitions from declarations
This is generally a fine practice: Putting implementations in headers
makes them harder to read and slows compilation. Unfortunately it is
necessary for templates, but we can ameliorate that by putting them in a
separate header. Only files which need to instantiate those templates
will need to include the header with the implementation; the rest can
just include the declaration.

This is now documenting in the contributing guide.

Also, it just happens that these polymorphic serializers are the
protocol agnostic ones. (Worker and serve protocol have the same logic
for these container types.) This means by doing this general template
cleanup, we are also getting a head start on better indicating which
code is protocol-specific and which code is shared between protocols.
2023-06-19 11:45:59 -04:00
John Ericson cb5052d98f Revert "Revert "Use template structs instead of phantoms""
This is the more typically way to do [Argument-dependent
lookup](https://en.cppreference.com/w/cpp/language/adl)-leveraging
generic serializers in C++. It makes the relationship between the `read`
and `write` methods more clear and rigorous, and also looks more
familiar to users coming from other languages that do not have C++'s
libertine ad-hoc overloading.

I am returning to this because during the review in
https://github.com/NixOS/nix/pull/6223, it came up as something that
would make the code easier to read --- easier today hopefully already,
but definitely easier if we were have multiple codified protocols with
code sharing between them as that PR seeks to accomplish.

If I recall correctly, the main criticism of this the first time around
(in 2020) was that having to specify the type when writing, e.g.
`WorkerProto<MyType>::write`, was too verbose and cumbersome. This is
now addressed with the `workerProtoWrite` wrapper function.

This method is also the way `nlohmann::json`, which we have used for a
number of years now, does its serializers, for what its worth.

This reverts commit 45a0ed82f0. That
commit in turn reverted 9ab07e99f5.
2023-05-17 22:44:47 -04:00
Robert Hensing 3f9589f17e
Merge pull request #6312 from obsidiansystems/keyed-build-result
Shuffle `BuildResult` data definition, make state machine clearer, introduce `SingleDrvOutputs`
2023-04-17 18:08:05 +02:00
John Ericson 24866b71c4 Introduce SingleDrvOutputs
In many cases we are dealing with a collection of realisations, they are
all outputs of the same derivation. In that case, we don't need
"derivation hashes modulos" to be part of our map key, because the
output names alone will be unique. Those hashes are still part of the
realisation proper, so we aren't loosing any information, we're just
"normalizing our schema" by narrowing the "primary key".

Besides making our data model a bit "tighter" this allows us to avoid a
double `for` loop in `DerivationGoal::waiteeDone`. The inner `for` loop
was previously just to select the output we cared about without knowing
its hash. Now we can just select the output by name directly.

Note that neither protocol is changed as part of this: we are still
transferring `DrvOutputs` over the wire for `BuildResult`s. I would only
consider revising this once #6223 is merged, and we can mention protocol
versions inside factored-out serialization logic. Until then it is
better not change anything because it would come a the cost of code
reuse.
2023-04-15 12:51:19 -04:00
John Ericson fd21f9d76e Merge remote-tracking branch 'upstream/master' into path-info 2023-04-07 20:39:04 -04:00
Robert Hensing bf2c5c3958 nix-store.cc: Refactor, remove qDefault 2023-04-03 18:45:20 +02:00
Robert Hensing 3dac4c7874 Add explicit case statements where -Wswitch-enum would report them 2023-04-03 18:17:32 +02:00
John Ericson f4ab297b31 Ensure all headers have #pragma once and are in API docs
`///@file` makes them show up in the internal API dos. A tiny few were
missing `#pragma once`.
2023-03-31 23:19:44 -04:00
John Ericson c51d554c93 Use "raw pattern" for content address types
We weren't because this ancient PR predated it!

This is actually a new version of the pattern which addresses some
issues identified in #7479.
2023-03-30 17:12:49 -04:00
John Ericson aa99005004 Merge remote-tracking branch 'upstream/master' into path-info
Also improve content-address.hh API docs.
2023-03-30 16:28:53 -04:00
Alexander Bantyev 36b059748d Split nix-env and nix-store documentation per-subcommand
Documentation on "classic" commands with many sub-commands are
notoriously hard to discover due to lack of overview and anchor links.
Additionally the information on common options and environment variables
is not accessible offline in man pages, and therefore often overlooked
by readers.

With this change, each sub-command of nix-store and nix-env gets its
own page in the manual (listed in the table of contents), and each own
man page.

Also, man pages for each subcommand now (again) list common options
and environment variables. While this makes each page quite long and
some common parameters don't apply, this should still make it easier
to navigate as that additional information was not accessible on the
command line at all.

It is now possible to run 'nix-store --<subcommand> --help` to display
help pages for the given subcommand.

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2023-03-30 09:46:28 +02:00
Claudio Bley e7b9dc7c89 nix-store: Use long for narSize in graphml output 2023-03-24 17:25:17 +01:00
Eelco Dolstra 8f96720b9f Fix another uninitialized variable
https://hydra.nixos.org/build/211811494
2023-03-09 15:30:53 +01:00
Eelco Dolstra f0908f592c
Merge pull request #7942 from edolstra/remove-format
Remove FormatOrString and remaining uses of format()
2023-03-03 10:22:11 +01:00
Valentin Gagarin 37c61907d7
Merge pull request #7605 from tweag/comments
add comments
2023-03-03 06:38:29 +01:00
Eelco Dolstra 29abc8e764 Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
Timothy DeHerrera df643051e2
nix-store: read paths from standard input
Resolves #7437 for new `nix-store` by adding a `--stdin` flag.
2023-02-28 12:29:16 -07:00
John Ericson d381248ec0 No inheritance for TextInfo and FixedOutputInfo 2023-02-28 12:14:11 -05:00
John Ericson 85bb865d20 Revert "Remove some designated initializers"
This reverts commit ee9eb83a84.
2023-02-28 11:57:20 -05:00
John Ericson ee9eb83a84 Remove some designated initializers
With the switch to C++20, the rules became more strict, and we can no
longer initialize base classes. Make them comments instead.

(BTW
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2287r1.html
this offers some new syntax for this use-case. Hopefully this will be
adopted and we can eventually use it.)
2023-02-01 11:25:56 -05:00
Taeer Bar-Yam b2752a4f74 add comments 2023-01-17 08:28:56 -05:00
John Ericson b3d91239ae Make ValidPathInfo have plain StorePathSet references like before
This change can wait for another PR.
2023-01-14 16:42:03 -05:00
John Ericson 6a168254ce Use named field initialization for references 2023-01-06 12:24:20 -05:00
John Ericson e9fc1e4fdb Merge remote-tracking branch 'upstream/master' into path-info 2023-01-06 10:35:20 -05:00
Eelco Dolstra 17f81d3215 Fix unused variable warning 2022-12-12 16:41:46 +01:00
Eelco Dolstra 7396844676
Merge pull request #7421 from edolstra/lazy-trees-trivial-changes
Trivial changes from the lazy-trees branch
2022-12-12 13:52:56 +01:00
Andreas Rammhold dbc8547664 Ignore the enforceDeterminism value
We used to set enforceDeterminism to true in the settings (by default)
and thus did send a non-zero value over the wire. The value should
probably be ignored as it should only matter if nrRounds is non-zero
as well.

Having the old code here where the value is expected to be zero only
works with the same version of Nix where we are sending zero. We
should always test this against older Nix versions being client or
server as otherwise upgrade in larger networks might be a pain.

Fixes 8e0946e8df
2022-12-10 17:55:07 +01:00
Eelco Dolstra 703d863a48 Trivial changes from the lazy-trees branch 2022-12-07 14:06:34 +01:00
Linus Heckemann 8e0946e8df Remove repeat and enforce-determinism options
These only functioned if a very narrow combination of conditions held:

- The result path does not yet exist (--check did not result in
  repeated builds), AND
- The result path is not available from any configured substituters, AND
- No remote builders that can build the path are available.

If any of these do not hold, a derivation would be built 0 or 1 times
regardless of the repeat option. Thus, remove it to avoid confusion.
2022-12-07 11:36:48 +01:00
Eelco Dolstra 6259fd7ea6 Fix indentation 2022-11-04 13:29:39 +01:00
Eelco Dolstra b95faccf03 Merge remote-tracking branch 'origin/master' into auto-uid-allocation 2022-11-03 17:43:40 +01:00
Rickard Nilsson c2d7456926 Fix a misplaced parenthese in serve protocol check
This issue made it impossible for clients using a serve protocol of
version <= 2.3 to use the `cmdBuildDerivation` command of servers using
a protocol of version >= 2.6. The faulty version check makes the server
send back build outputs that the client is not expecting.
2022-08-24 01:54:43 +02:00
Sidharth Kshatriya 3efea3d28a nix-store: small std::move() optimization 2022-06-09 16:25:26 +05:30