1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
use super::PathInfoService;
use crate::{
nar::NarCalculationService,
proto::{self, ListPathInfoRequest, PathInfo},
};
use async_stream::try_stream;
use futures::stream::BoxStream;
use nix_compat::nixbase32;
use std::sync::Arc;
use tonic::{async_trait, Code};
use tracing::{instrument, Span};
use tracing_indicatif::span_ext::IndicatifSpanExt;
use tvix_castore::composition::{CompositionContext, ServiceBuilder};
use tvix_castore::{proto as castorepb, Error};
/// Connects to a (remote) tvix-store PathInfoService over gRPC.
#[derive(Clone)]
pub struct GRPCPathInfoService<T> {
/// The internal reference to a gRPC client.
/// Cloning it is cheap, and it internally handles concurrent requests.
grpc_client: proto::path_info_service_client::PathInfoServiceClient<T>,
}
impl<T> GRPCPathInfoService<T> {
/// construct a [GRPCPathInfoService] from a [proto::path_info_service_client::PathInfoServiceClient].
/// panics if called outside the context of a tokio runtime.
pub fn from_client(
grpc_client: proto::path_info_service_client::PathInfoServiceClient<T>,
) -> Self {
Self { grpc_client }
}
}
#[async_trait]
impl<T> PathInfoService for GRPCPathInfoService<T>
where
T: tonic::client::GrpcService<tonic::body::BoxBody> + Send + Sync + Clone + 'static,
T::ResponseBody: tonic::codegen::Body<Data = tonic::codegen::Bytes> + Send + 'static,
<T::ResponseBody as tonic::codegen::Body>::Error: Into<tonic::codegen::StdError> + Send,
T::Future: Send,
{
#[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
let path_info = self
.grpc_client
.clone()
.get(proto::GetPathInfoRequest {
by_what: Some(proto::get_path_info_request::ByWhat::ByOutputHash(
digest.to_vec().into(),
)),
})
.await;
match path_info {
Ok(path_info) => {
let path_info = path_info.into_inner();
path_info
.validate()
.map_err(|e| Error::StorageError(format!("invalid pathinfo: {}", e)))?;
Ok(Some(path_info))
}
Err(e) if e.code() == Code::NotFound => Ok(None),
Err(e) => Err(Error::StorageError(e.to_string())),
}
}
#[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
let path_info = self
.grpc_client
.clone()
.put(path_info)
.await
.map_err(|e| Error::StorageError(e.to_string()))?
.into_inner();
Ok(path_info)
}
#[instrument(level = "trace", skip_all)]
fn list(&self) -> BoxStream<'static, Result<PathInfo, Error>> {
let mut grpc_client = self.grpc_client.clone();
let stream = try_stream! {
let resp = grpc_client.list(ListPathInfoRequest::default()).await;
let mut stream = resp.map_err(|e| Error::StorageError(e.to_string()))?.into_inner();
loop {
match stream.message().await {
Ok(o) => match o {
Some(pathinfo) => {
// validate the pathinfo
if let Err(e) = pathinfo.validate() {
Err(Error::StorageError(format!(
"pathinfo {:?} failed validation: {}",
pathinfo, e
)))?;
}
yield pathinfo
}
None => {
return;
},
},
Err(e) => Err(Error::StorageError(e.to_string()))?,
}
}
};
Box::pin(stream)
}
}
#[async_trait]
impl<T> NarCalculationService for GRPCPathInfoService<T>
where
T: tonic::client::GrpcService<tonic::body::BoxBody> + Send + Sync + Clone + 'static,
T::ResponseBody: tonic::codegen::Body<Data = tonic::codegen::Bytes> + Send + 'static,
<T::ResponseBody as tonic::codegen::Body>::Error: Into<tonic::codegen::StdError> + Send,
T::Future: Send,
{
#[instrument(level = "trace", skip_all, fields(root_node = ?root_node, indicatif.pb_show=1))]
async fn calculate_nar(
&self,
root_node: &castorepb::node::Node,
) -> Result<(u64, [u8; 32]), Error> {
let span = Span::current();
span.pb_set_message("Waiting for NAR calculation");
span.pb_start();
let path_info = self
.grpc_client
.clone()
.calculate_nar(castorepb::Node {
node: Some(root_node.clone()),
})
.await
.map_err(|e| Error::StorageError(e.to_string()))?
.into_inner();
let nar_sha256: [u8; 32] = path_info
.nar_sha256
.to_vec()
.try_into()
.map_err(|_e| Error::StorageError("invalid digest length".to_string()))?;
Ok((path_info.nar_size, nar_sha256))
}
}
#[derive(serde::Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct GRPCPathInfoServiceConfig {
url: String,
}
impl TryFrom<url::Url> for GRPCPathInfoServiceConfig {
type Error = Box<dyn std::error::Error + Send + Sync>;
fn try_from(url: url::Url) -> Result<Self, Self::Error> {
// normally grpc+unix for unix sockets, and grpc+http(s) for the HTTP counterparts.
// - In the case of unix sockets, there must be a path, but may not be a host.
// - In the case of non-unix sockets, there must be a host, but no path.
// Constructing the channel is handled by tvix_castore::channel::from_url.
Ok(GRPCPathInfoServiceConfig {
url: url.to_string(),
})
}
}
#[async_trait]
impl ServiceBuilder for GRPCPathInfoServiceConfig {
type Output = dyn PathInfoService;
async fn build<'a>(
&'a self,
_instance_name: &str,
_context: &CompositionContext,
) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
let client = proto::path_info_service_client::PathInfoServiceClient::new(
tvix_castore::tonic::channel_from_url(&self.url.parse()?).await?,
);
Ok(Arc::new(GRPCPathInfoService::from_client(client)))
}
}
#[cfg(test)]
mod tests {
use crate::pathinfoservice::tests::make_grpc_path_info_service_client;
use crate::pathinfoservice::PathInfoService;
use crate::tests::fixtures;
/// This ensures connecting via gRPC works as expected.
#[tokio::test]
async fn test_valid_unix_path_ping_pong() {
let (_blob_service, _directory_service, path_info_service) =
make_grpc_path_info_service_client().await;
let path_info = path_info_service
.get(fixtures::DUMMY_PATH_DIGEST)
.await
.expect("must not be error");
assert!(path_info.is_none());
}
}
|
