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refactor(tvix/nix-compat/wire): move magic bytes to worker_protocol

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`primitive.rs` implements reading and writing primitive (fixed-length)
types in the wire format, used in the the nix daemon protocol and NAR
format.

Move worker-protocol specific magic bytes to worker_protocol.rs (and
possibly further split there once needed)

Change-Id: If681c01e9460294619f1d000229b81f0ac745810
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11377
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: picnoir picnoir <picnoir@alternativebit.fr>
This commit is contained in:
Florian Klink 2024-04-08 00:52:51 +03:00 • committed by clbot
parent 71a3855f09
commit fd749070e2
3 changed files with 18 additions and 16 deletions
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20
users/picnoir/tvix-daemon/src/main.rs
View file

@ -127,15 +127,17 @@ where
let mut magic_hello = vec![0; 8];
conn.read_exact(&mut magic_hello).await?;
debug!("Hello read");
if magic_hello != primitive::MAGIC_HELLO {
if magic_hello != worker_protocol::MAGIC_HELLO {
Err(anyhow!(
"Invalid client hello received: {:?}, expected {:?}",
magic_hello,
primitive::MAGIC_HELLO
worker_protocol::MAGIC_HELLO
))
} else {
conn.write_all(&primitive::MAGIC_HELLO_RESPONSE).await?;
conn.write_all(&primitive::PROTOCOL_VERSION).await?;
conn.write_all(&worker_protocol::MAGIC_HELLO_RESPONSE[..])
.await?;
conn.write_all(&worker_protocol::PROTOCOL_VERSION[..])
.await?;
conn.flush().await?;
debug!("Hello responded");
let client_version = primitive::read_u64(&mut conn).await?;
@ -192,16 +194,16 @@ where
#[cfg(test)]
mod integration_tests {
use nix_compat::wire::primitive;
use nix_compat::wire::worker_protocol;
#[tokio::test]
async fn test_init_handshake() {
let mut test_conn = tokio_test::io::Builder::new()
.read(&primitive::MAGIC_HELLO)
.write(&primitive::MAGIC_HELLO_RESPONSE)
.write(&primitive::PROTOCOL_VERSION)
.read(&worker_protocol::MAGIC_HELLO)
.write(&worker_protocol::MAGIC_HELLO_RESPONSE)
.write(&worker_protocol::PROTOCOL_VERSION)
// Let's say the client is in sync with the daemon
// protocol-wise
.read(&primitive::PROTOCOL_VERSION)
.read(&worker_protocol::PROTOCOL_VERSION)
// cpu affinity
.read(&vec![0; 8])
// reservespace