Commit graph

541 commits

Author SHA1 Message Date
regnat 4d45839499 Fix the detection of already built drv outputs
PRs #4370 and #4348 had a bad interaction in that the second broke the fist
one in a not trivial way.

The issue was that since #4348 the logic for detecting whether a
derivation output is already built requires some logic that was specific
to the `LocalStore`.

It happens though that most of this logic could be upstreamed to any `Store`,
which is what this commit does.
2020-12-17 11:35:24 +01:00
regnat cac8d5b742 Don't ignore an absent drv file in queryPartialDrvOutputMap
This ignore was here because `queryPartialDrvOutputMap` was used both
1. as a cache to avoid having to re-read the derivation (when gc-ing for
example), and
2. as the source of truth for ca realisations

The use-case 2. required it to be able to work even when the derivation
wasn't there anymore (see https://github.com/NixOS/nix/issues/4138).
However, this use-case is now handled by `queryRealisation`, meaning
that we can safely error out if the derivation isn't there anymore
2020-12-16 13:36:17 +01:00
regnat bab1cda0e6 Use the hash modulo in the derivation outputs
Rather than storing the derivation outputs as `drvPath!outputName` internally,
store them as `drvHashModulo!outputName` (or `outputHash!outputName` for
fixed-output derivations).

This makes the storage slightly more opaque, but enables an earlier
cutoff in cases where a fixed-output dependency changes (but keeps the
same output hash) − same as what we already do for input-addressed
derivations.
2020-12-11 21:17:23 +01:00
regnat 3ac9d74eb1 Rework the db schema for derivation outputs
Add a new table for tracking the derivation output mappings.

We used to hijack the `DerivationOutputs` table for that, but (despite its
name), it isn't a really good fit:

- Its entries depend on the drv being a valid path, making it play badly with
  garbage collection and preventing us to copy a drv output without copying
  the whole drv closure too;
- It dosen't guaranty that the output path exists;

By using a different table, we can experiment with a different schema better
suited for tracking the output mappings of CA derivations.
(incidentally, this also fixes #4138)
2020-12-11 20:41:32 +01:00
regnat 58cdab64ac Store metadata about drv outputs realisations
For each known realisation, store:
- its output
- its output path

This comes with a set of needed changes:

- New `realisations` module declaring the types needed for describing
  these mappings
- New `Store::registerDrvOutput` method registering all the needed informations
  about a derivation output (also replaces `LocalStore::linkDeriverToPath`)
- new `Store::queryRealisation` method to retrieve the informations for a
  derivations

This introcudes some redundancy on the remote-store side between
`wopQueryDerivationOutputMap` and `wopQueryRealisation`.
However we might need to keep both (regardless of backwards compat)
because we sometimes need to get some infos for all the outputs of a
derivation (where `wopQueryDerivationOutputMap` is handy), but all the
stores can't implement it − because listing all the outputs of a
derivation isn't really possible for binary caches where the server
doesn't allow to list a directory.
2020-12-11 20:41:32 +01:00
regnat c0f21f08f8 Hide the sqlite statements declarations for the local store
These have no need to be in the public interface and it causes spurious
rebuilds each time one wants to add or remove a new statement.
2020-12-08 13:29:13 +01:00
Eelco Dolstra 1b79b5b983 read(): Use char * instead of unsigned char *
This gets rid of some pointless casts.
2020-12-02 14:17:27 +01:00
Eelco Dolstra e6b7c7b79c Cleanup 2020-11-17 13:58:55 +01:00
Eelco Dolstra e8c379555f LocalStore: Get rid of recursive_mutex 2020-11-03 14:45:24 +01:00
Eelco Dolstra 7cf874c17d Don't use readDerivation() in addValidPath()
readDerivation() requires a valid path.

Fixes #4210.
2020-11-02 18:46:44 +01:00
stev 869c0321ff Alter "wanted:" to "specified:" in hash mismatch output
This makes it even clearer which of the two hashes was specified in the
nix files. Some may think that "wanted" and "got" is obvious, but:
"got" could mean "got in nix file" and "wanted" could mean "want to see in nix file".
2020-10-29 00:33:14 +01:00
regnat c092fa4702 Allow non-CA derivations to depend on CA derivations 2020-10-27 07:29:23 +01:00
John Ericson 10202bbf29 Merge remote-tracking branch 'upstream/master' into ca-floating-upstream 2020-09-28 15:39:11 +00:00
Eelco Dolstra 236d9ee7f7 lstat() cleanup 2020-09-23 19:17:28 +02:00
Eelco Dolstra d4f8163d10 canonicalisePathMetaData_(): Change assertion to error message 2020-09-23 18:21:22 +02:00
regnat 67cc356bb3 Merge remote-tracking branch 'origin/master' into non-ca-depending-on-ca 2020-09-22 16:11:25 +02:00
Eelco Dolstra 5b107f2c5f
Merge pull request #4038 from maljub01/master
Add a nix.conf option for allowing a symlinked store
2020-09-22 13:19:22 +02:00
John Ericson 3786a801c3 Merge remote-tracking branch 'upstream/master' into ca-floating-upstream 2020-09-22 04:15:55 +00:00
Eelco Dolstra d51ba43047 Move Callback into its own header
This gets rid of the inclusion of <future> in util.hh, cutting
compilation time by ~20s (CPU time).

Issue #4045.
2020-09-21 18:42:21 +02:00
Marwan Aljubeh f80ffeb8c9 Update the variable name accordingly 2020-09-21 17:29:08 +01:00
Marwan Aljubeh c00e078343 Add a nix.conf option for allowing a symlinked store 2020-09-18 17:10:39 +01:00
John Ericson b7df353f27 Merge remote-tracking branch 'upstream/master' into ca-floating-upstream 2020-09-17 16:33:10 +00:00
regnat f24f0888f9 Document the new store hierarchy 2020-09-16 13:53:09 +02:00
regnat 5895184df4 Correctly call all the parent contructors of the stores
Using virtual inheritance means that only the default constructors of
the parent classes will be called, which isn't what we want
2020-09-16 13:53:09 +02:00
John Ericson 98dfd7531d Fix querying outputs for CA derivations some more
If we resolve using the known path of a derivation whose output we
didn't have, we previously blew up. Now we just fail gracefully,
returning the map of all outputs unknown.
2020-09-04 18:33:58 +00:00
John Ericson aad4abcc9c Fix floating CA tests
We will sometimes try to query the outputs of derivations we can't
resolve. That's fine; it just means we don't know what those outputs are
yet.
2020-09-04 01:17:38 +00:00
John Ericson 8eb73a8724 CA derivations that depend on other CA derivations
Co-authored-by: Théophane Hufschmitt <regnat@users.noreply.github.com>
2020-08-24 19:01:15 +00:00
John Ericson 45a2f1baab Rename drv output querying functions, like master
- `queryDerivationOutputMapAssumeTotal` -> `queryPartialDerivationOutputMap`
 - `queryDerivationOutputMapAssumeTotal` -> `queryDerivationOutputMap
2020-08-20 18:14:12 +00:00
John Ericson 3c8b5b6219 Merge remote-tracking branch 'upstream/master' into single-ca-drv-build 2020-08-14 17:00:13 +00:00
Eelco Dolstra 13e49be660
Merge pull request #3875 from obsidiansystems/new-interface-for-path-pathOpt
Offer a safer interface for path and pathOpt
2020-08-14 17:19:19 +02:00
Eelco Dolstra d81f13f7cb
Merge pull request #3899 from obsidiansystems/make-narHash-not-optional
Make narHash in ValidPathInfo not optional
2020-08-14 17:00:18 +02:00
John Ericson 85aacbee64 Use TeeSink and TeeSouce in a few more places 2020-08-13 14:51:17 +00:00
John Ericson e913a2989f Squashed get CA derivations building 2020-08-07 19:51:55 +00:00
John Ericson e89b5bd0bf Minimize the usage of Hash::dummy 2020-08-06 18:31:48 +00:00
Carlo Nucera 1d2e80ddd6 Merge branch 'master' of github.com:NixOS/nix into new-interface-for-path-pathOpt 2020-08-05 15:45:33 -04:00
Carlo Nucera 8241e660ba Remove Hash::operator bool ()
Since the hash is not optional anymore
2020-08-05 15:30:38 -04:00
Carlo Nucera be6e1c6457 Merge branch 'master' of github.com:NixOS/nix into make-narHash-not-optional 2020-08-05 15:14:47 -04:00
Carlo Nucera 1d71028f4d Remove optionality in ValidPathInfo::narInfo 2020-08-05 14:42:48 -04:00
John Ericson cf939055c8 Merge remote-tracking branch 'upstream/master' into drv-outputs-map-allow-missing 2020-08-05 16:43:30 +00:00
Eelco Dolstra 790b694be7 Style fix 2020-08-05 16:51:06 +02:00
John Ericson e7b0847f2d Make names more consistent 2020-08-05 14:44:39 +00:00
John Ericson 839f0fe095 Merge remote-tracking branch 'upstream/master' into misc-ca 2020-08-05 14:40:01 +00:00
John Ericson 03f4fafc27 Merge remote-tracking branch 'upstream/master' into misc-ca 2020-08-05 14:36:25 +00:00
John Ericson fbeb8695fb Merge remote-tracking branch 'upstream/master' into drv-outputs-map-allow-missing 2020-08-04 18:35:33 +00:00
John Ericson d3452a5ed6 Merge remote-tracking branch 'upstream/master' into better-ca-parse-errors 2020-08-04 16:13:20 +00:00
John Ericson 54281f3ac1 addToStore in terms of addToStoreFromDump is not local-store-specific 2020-08-03 04:13:45 +00:00
Carlo Nucera b6d97fdbf4 Merge branch 'master' of github.com:NixOS/nix into drv-outputs-map-allow-missing 2020-07-31 13:12:51 -04:00
Carlo Nucera eee6ef86cd Merge branch 'master' of github.com:NixOS/nix into better-ca-parse-errors 2020-07-30 18:27:25 -04:00
Matthew Bauer 05ac4db39a Merge remote-tracking branch 'origin/master' into substitute-other-storedir 2020-07-30 12:38:24 -05:00
Carlo Nucera c318d398f3 Merge branch 'misc-ca' of github.com:obsidiansystems/nix into new-interface-for-path-pathOpt 2020-07-28 14:22:24 -04:00