485fd26334
The CLs did bitrot a bit, they're based on an older version of the protocol, and it's unclear if they'll be a separate Go Binary, or just another HTTP handler inside tvix-store itself, considering we now have way more NAR juggling code than before. Change-Id: I3632035cda8d75a8ff23b3132312f0f086d9e02f Reviewed-on: https://cl.tvl.fyi/c/depot/+/8732 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
59 lines
1.7 KiB
Markdown
59 lines
1.7 KiB
Markdown
# //tvix/store
|
|
|
|
This contains the code hosting the tvix-store.
|
|
|
|
For the local store, Nix realizes files on the filesystem in `/nix/store` (and
|
|
maintains some metadata in a SQLite database). For "remote stores", it
|
|
communicates this metadata in NAR (Nix ARchive) and NARInfo format.
|
|
|
|
Compared to the Nix model, `tvix-store` stores data on a much more granular
|
|
level than that, which provides more deduplication possibilities, and more
|
|
granular copying.
|
|
|
|
However, enough information is preserved to still be able to render NAR and
|
|
NARInfo when needed.
|
|
|
|
## More Information
|
|
Check the `protos/` subfolder for the definition of the exact RPC methods and
|
|
messages.
|
|
|
|
|
|
## Interacting with the GRPC service manually
|
|
The shell environment in `//tvix` provides `evans`, which is an interactive
|
|
REPL-based gPRC client.
|
|
|
|
You can use it to connect to a `tvix-store` and call the various RPC methods.
|
|
|
|
```shell
|
|
$ cargo run -- daemon &
|
|
$ evans --host localhost --port 8000 -r repl
|
|
______
|
|
| ____|
|
|
| |__ __ __ __ _ _ __ ___
|
|
| __| \ \ / / / _. | | '_ \ / __|
|
|
| |____ \ V / | (_| | | | | | \__ \
|
|
|______| \_/ \__,_| |_| |_| |___/
|
|
|
|
more expressive universal gRPC client
|
|
|
|
|
|
tvix.store.v1@localhost:8000> service BlobService
|
|
|
|
tvix.store.v1.BlobService@localhost:8000> call Put --bytes-from-file
|
|
data (TYPE_BYTES) => /run/current-system/system
|
|
{
|
|
"digest": "KOM3/IHEx7YfInAnlJpAElYezq0Sxn9fRz7xuClwNfA="
|
|
}
|
|
|
|
tvix.store.v1.BlobService@localhost:8000> call Get --bytes-as-base64
|
|
digest (TYPE_BYTES) => KOM3/IHEx7YfInAnlJpAElYezq0Sxn9fRz7xuClwNfA=
|
|
{
|
|
"data": "eDg2XzY0LWxpbnV4"
|
|
}
|
|
|
|
$ echo eDg2XzY0LWxpbnV4 | base64 -d
|
|
x86_64-linux
|
|
```
|
|
|
|
Thanks to `tvix-store` providing gRPC Server Reflection (with `reflection`
|
|
feature), you don't need to point `evans` to the `.proto` files.
|