Commit graph

84 commits

Author SHA1 Message Date
Vincent Ambo
bb5427a47a chore(docs): Update embedded nix-1p version
The new version of the document has syntactic fixes that render pipes
in code blocks in tables correctly across dialects.

Fixes #44
2019-08-21 10:35:32 +01:00
Vincent Ambo
daa6196c2a fix(build): Force nix-env to use NIX_PATH
Thanks to clever!
2019-08-19 01:56:17 +01:00
Vincent Ambo
ccf6a95f94 chore(build): Pin nixpkgs to a specific commit
This is the same commit for which Nixery has popularity data, but that
isn't particularly relevant.
2019-08-19 01:56:17 +01:00
Vincent Ambo
e7d7f73f7d feat(build): Add 'extraPackages' parameter
This makes it possible to inject additional programs (e.g. Cachix)
into a Nixery container.
2019-08-19 01:56:17 +01:00
Vincent Ambo
ffae282eac fix(docs): Correct link to layering strategy 2019-08-19 01:56:17 +01:00
Vincent Ambo
745b7ce0b8 fix(build): Ensure root user is known inside of container
This is required by git in cases where Nixery is configured with a
custom git repository.

I've also added a shell back into the image to make debugging a
running Nixery easier. It turns out some of the dependencies already
pull in bash anyways, so this is just surfacing it to $PATH.
2019-08-17 10:42:13 +01:00
Vincent Ambo
9a95c4124f fix(server): Sort requested packages in image name & spec
Before this change, Nixery would pass on the image name unmodified to
Nix which would lead it to cache-bust the manifest and configuration
layers for images that are content-identical but have different
package ordering.

This fixes #38.
2019-08-17 10:31:41 +01:00
Vincent Ambo
0ee239874b docs(README): Update links to layering strategy 2019-08-17 10:10:41 +01:00
Florian Klink
3b65fc8c72 feat(server): add iana-etc and cacert to the shell convenience package
These probably should be part of every container image by default, but
adding it to the "shell" convenience name probably is our best bet for
now.
2019-08-16 22:47:22 +01:00
Vincent Ambo
501e6ded5f fix(build): Ensure GCS signing is used in CI 2019-08-15 16:04:34 +01:00
Vincent Ambo
3f232e0170 docs: Add asciinema demo to README & book 2019-08-15 16:04:34 +01:00
Vincent Ambo
0ec369d76c docs(book): Update information on new layering strategy 2019-08-15 16:04:34 +01:00
Vincent Ambo
ca1ffb397d feat(build): Add an integration test that runs on Travis
This test, after performing the usual Nixery build, loads the built
image into Docker, runs it, pulls an image from Nixery and runs that
image.

To make this work, there is some configuration on the Travis side.
Most importantly, the following environment variables have special
values:

* `GOOGLE_KEY`: This is set to a base64-encoded service account key to
  be used in the test.
* `GCS_SIGNING_PEM`: This is set to a base64-encoded signing key (in
  PEM) that is used for signing URLs.

Both of these are available to all branches in the Nixery repository.
2019-08-15 00:26:57 +01:00
Vincent Ambo
85b9c30749 chore(server): Add 'go vet' to build process 2019-08-14 20:18:41 +01:00
Vincent Ambo
36d50d1f19 fix(server): Print correct project name during startup
They grow up so fast :')
2019-08-14 20:18:41 +01:00
Vincent Ambo
cf227c153f feat(builder): Implement build cache for manifests & layers
Implements a cache that keeps track of:

a) Manifests that have already been built (for up to 6 hours)
b) Layers that have already been seen (and uploaded to GCS)

This significantly speeds up response times for images that are full
or partial matches with previous images served by an instance.
2019-08-14 20:18:41 +01:00
Vincent Ambo
58380e3313 refactor(server): Extract build logic into separate module
This module is going to get more complex as the implementation of #32
progresses.
2019-08-14 20:18:41 +01:00
Vincent Ambo
d9168e3e4d refactor(build-image): Extract package set loading into helper
Some upcoming changes might require the Nix build to be split into
multiple separate nix-build invocations of different expressions, thus
splitting this out is useful.

It also fixes an issue where `build-image/default.nix` might be called
in an environment where no Nix channels are configured.
2019-08-14 00:02:04 +01:00
Vincent Ambo
3939722063 style: Apply nixfmt to trivial Nix files
ALl the ones except for build-image.nix are considered trivial. On the
latter, nixfmt makes some useful changes but by-and-large it is not
ready for that code yet.
2019-08-14 00:02:04 +01:00
Vincent Ambo
6285cd8dbf feat(build-image): Use new image layering algorithm for images
Removes usage of the old layering algorithm and replaces it with the
new one.

Apart from the new layer layout this means that each layer is now
built in a separate derivation, which hopefully leads to better
cacheability.
2019-08-14 00:02:04 +01:00
Vincent Ambo
7214d0aa4f feat(build-image): Introduce a terrifying hack to build group-layers
The issue is described in detail in a comment in
`build-image/default.nix`, please read it.
2019-08-14 00:02:04 +01:00
Vincent Ambo
f60f702274 feat: Add shell.nix for running a local Nixery 2019-08-14 00:02:04 +01:00
Vincent Ambo
6035bf36eb feat(popcount): Clean up popularity counting script
Adds the script used to generate the popularity information for all of
nixpkgs.

The README lists the (currently somewhat rough) usage instructions.
2019-08-14 00:02:04 +01:00
Vincent Ambo
6d718bf271 refactor(server): Use wrapper script to avoid path dependency
Instead of requiring the server component to be made aware of the
location of the Nix builder via environment variables, this commit
introduces a wrapper script for the builder that can simply exist on
the builders $PATH.

This is one step towards a slightly nicer out-of-the-box experience
when using `nix-build -A nixery-bin`.
2019-08-14 00:02:04 +01:00
Vincent Ambo
819b460278 chore(docs): Move mdBook derivation to docs/default.nix 2019-08-14 00:02:04 +01:00
Vincent Ambo
1fa93fe6f6 refactor: Move registry server to a subfolder 2019-08-14 00:02:04 +01:00
Vincent Ambo
d699f7f91c chore(build): Update Go dependencies & add gonum 2019-08-14 00:02:04 +01:00
Vincent Ambo
56a426952c feat(group-layers): Finish layering algorithm implementation
This commit adds the actual logic for extracting layer groupings and
merging them until the layer budget is satisfied.

The implementation conforms to the design doc as of the time of this
commit.
2019-08-14 00:02:04 +01:00
Vincent Ambo
590ce994bb feat(group-layers): Add initial popcount scripts
This script generates an entry in a text file for each time a
derivation is referred to by another in nixpkgs.

For initial testing, this output can be turned into group-layers
compatible JSON with this *trivial* invocation:

cat output | awk '{ print "{\"" $2 "\":" $1 "}"}' | jq -s '. | add | with_entries(.key |= sub("/nix/store/[a-z0-9]+-";""))' > test-data.json
2019-08-14 00:02:04 +01:00
Vincent Ambo
92078527db feat(group-layers): Add preliminary size & popularity considerations
As described in the design document, this adds considerations for
closure size and popularity. All closures meeting a certain threshold
for either value will have an extra edge from the image root to
themselves inserted in the graph, which will cause them to be
considered for inclusion in a separate layer.

This is preliminary because popularity is considered as a boolean
toggle (the input I generated only contains the top ~200 most popular
packages), but it should be using either absolute popularity values or
percentiles (needs some experimentation).
2019-08-14 00:02:04 +01:00
Vincent Ambo
ce31598f42 feat(group-layers): Implement first half of new layering strategy
The strategy is described in-depth in the comment at the top of the
implementation file, as well as in the design document:

https://storage.googleapis.com/nixdoc/nixery-layers.html
2019-08-14 00:02:04 +01:00
Vincent Ambo
3e385dc379 docs: Update embedded nix-1p
The new commit has an operator table, which is nice to have!
2019-08-08 21:15:50 +01:00
Vincent Ambo
c727b3ca9e chore(nix): Increase maximum number of layers to 96
This uses a significantly larger percentage of the total available
layers (125) than before, which means that cache hits for layers
become more likely between images.
2019-08-08 21:15:50 +01:00
Vincent Ambo
993fda3377 fix(go): Fix breakage in unsigned URLs
This affected the public instance which is still running without URL
signing. Should add some monitoring!
2019-08-08 18:58:23 +01:00
Vincent Ambo
12a853fab7 docs: Minor fixes to README after new website release 2019-08-05 01:26:19 +01:00
Vincent Ambo
d87662b7b5 docs: Add a section on Nix itself 2019-08-05 00:32:53 +01:00
Vincent Ambo
6293d69fd9 docs: Add a section on running your own Nixery 2019-08-05 00:32:53 +01:00
Vincent Ambo
a3f6278913 docs: Add an "under-the-hood" page explaining the build process
This page describes the various steps that Nixery goes through when
"procuring" an image.

The intention is to give users some more visibility into what is going
on and to make it clear that this is not just an image storage
service.
2019-08-05 00:32:53 +01:00
Vincent Ambo
2bef0ba240 feat(build): Build Nixery book and embed it into Nixery image
Executes the previously added mdBook on the previously added book
source to yield a directory that can be served by Nixery on its index
page.

This is one of those 'I <3 Nix' things due to how easy it is to do.
2019-08-05 00:32:53 +01:00
Vincent Ambo
85e8d760fc feat(build): Add mdBook 0.3.1 to build environment
Upstream nixpkgs currently only has an older versin of mdBook. Until
that changes, we keep a different version in here.
2019-08-05 00:32:53 +01:00
Vincent Ambo
7c41a7a872 docs: Replace static page with mdBook site
Uses mdBook[1] to generate a documentation overview page instead of
the previous HTML site.

This makes it possible to add more elaborate documentation without
having to deal with finicky markup.

[1]: https://github.com/rust-lang-nursery/mdBook
2019-08-05 00:32:53 +01:00
Vincent Ambo
099c99b7ad feat(build): Configure Cachix for build caching in CI
The CI setup is configured with an appropriate key to enable pushes to
the nixery.cachix.org binary cache.
2019-08-04 01:41:35 +01:00
Vincent Ambo
a0d7d693d3 feat(build): Support additional pre-launch commands in image
This makes it possible for users to hook basically arbitrary things
into the Nixery container image.
2019-08-04 01:41:35 +01:00
Vincent Ambo
20103640fa fix(nix): Support retrieving differently cased top-level attributes
As described in issue #14, the registry API does not allow image names
with uppercase-characters in them.

However, the Nix package set has several top-level keys with uppercase
characters in them which could previously not be retrieved using
Nixery.

This change implements a method for retrieving those keys, but it is
explicitly only working for the top-level package set as nested
sets (such as `haskellPackages`) often contain packages that differ in
case only.
2019-08-03 23:11:40 +01:00
Vincent Ambo
aa260af1ff docs: Add GCS signing envvars to README 2019-08-03 01:31:51 +01:00
Vincent Ambo
07ef06dcfa feat(go): Support signed GCS URLs with static keys
Google Cloud Storage supports granting access to protected objects via
time-restricted URLs that are cryptographically signed.

This makes it possible to store private data in buckets and to
distribute it to eligible clients without having to make those clients
aware of GCS authentication methods.

Nixery now uses this feature to sign URLs for GCS buckets when
returning layer URLs to clients on image pulls. This means that a
private Nixery instance can run a bucket with restricted access just
fine.

Under the hood Nixery uses a key provided via environment
variables to sign the URL with a 5 minute expiration time.

This can be set up by adding the following two environment variables:

* GCS_SIGNING_KEY: Path to the PEM file containing the signing key.
* GCS_SIGNING_ACCOUNT: Account ("e-mail" address) to use for signing.

If the variables are not set, the previous behaviour is not modified.
2019-08-03 01:31:51 +01:00
Vincent Ambo
3347c38ba7 fix(go): Registry API acknowledgement URI has a trailing slash
Previously the acknowledgement calls from Docker were receiving a
404 (which apparently doesn't bother it?!). This corrects the URL,
which meant that acknowledgement had to move inside of the
registryHandler.
2019-08-03 01:25:36 +01:00
Vincent Ambo
ecee1ec1b8 chore: Prevent accidental key leaks via gitignore 2019-08-03 01:25:36 +01:00
Vincent Ambo
62ade18b7b fix(static): Fix logo nitpick (smoothened λ edges) 2019-08-03 01:25:36 +01:00
Vincent Ambo
c84543a9b5 style(static): Fix favicon background colour 2019-08-03 01:25:36 +01:00