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refactor(tvix/*store): helper for channel creation from url

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This moves the repetitive code to parse a URL and create a channel
connected to it into `tvix_castore::channel::from_url`.

Part of b/308

Change-Id: Idd342cd71cad5e78a9b258b38c1b227993e75310
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9707
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>
This commit is contained in:
Florian Klink 2023-10-12 19:26:52 +02:00 • committed by flokli
parent 3f011d2762
commit 9757bf6377
6 changed files with 88 additions and 129 deletions
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45
tvix/store/src/pathinfoservice/grpc.rs
View file

@ -3,7 +3,6 @@ use crate::proto::{self, ListPathInfoRequest, PathInfo};
use async_stream::try_stream;
use futures::Stream;
use std::{pin::Pin, sync::Arc};
use tokio::net::UnixStream;
use tonic::{async_trait, transport::Channel, Code};
use tvix_castore::{
blobservice::BlobService, directoryservice::DirectoryService, proto as castorepb, Error,
@ -40,46 +39,10 @@ impl PathInfoService for GRPCPathInfoService {
_blob_service: Arc<dyn BlobService>,
_directory_service: Arc<dyn DirectoryService>,
) -> Result<Self, tvix_castore::Error> {
// Start checking for the scheme to start with grpc+.
match url.scheme().strip_prefix("grpc+") {
None => Err(Error::StorageError("invalid scheme".to_string())),
Some(rest) => {
let channel = if rest == "unix" {
if url.host_str().is_some() {
return Err(Error::StorageError("host may not be set".to_string()));
}
let path = url.path().to_string();
tonic::transport::Endpoint::try_from("http://[::]:50051") // doesn't matter
.unwrap()
.connect_with_connector_lazy(tower::service_fn(
move |_: tonic::transport::Uri| UnixStream::connect(path.clone()),
))
} else {
// ensure path is empty, not supported with gRPC.
if !url.path().is_empty() {
return Err(tvix_castore::Error::StorageError(
"path may not be set".to_string(),
));
}
// clone the uri, and drop the grpc+ from the scheme.
// Recreate a new uri with the `grpc+` prefix dropped from the scheme.
// We can't use `url.set_scheme(rest)`, as it disallows
// setting something http(s) that previously wasn't.
let url = {
let url_str = url.to_string();
let s_stripped = url_str.strip_prefix("grpc+").unwrap();
url::Url::parse(s_stripped).unwrap()
};
tonic::transport::Endpoint::try_from(url.to_string())
.unwrap()
.connect_lazy()
};
Ok(Self::from_client(
proto::path_info_service_client::PathInfoServiceClient::new(channel),
))
}
}
let channel = tvix_castore::channel::from_url(url)?;
Ok(Self::from_client(
proto::path_info_service_client::PathInfoServiceClient::new(channel),
))
}
async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {