use clap::Parser;
use clap::Subcommand;
use futures::future::try_join_all;
use futures::StreamExt;
use futures::TryStreamExt;
use nix_compat::path_info::ExportedPathInfo;
use serde::Deserialize;
use serde::Serialize;
use std::path::PathBuf;
use std::sync::Arc;
use tonic::transport::Server;
use tower::ServiceBuilder;
use tower_http::trace::{DefaultMakeSpan, TraceLayer};
use tracing::{info, info_span, instrument, Level, Span};
use tracing_indicatif::span_ext::IndicatifSpanExt as _;
use tvix_castore::import::fs::ingest_path;
use tvix_store::nar::NarCalculationService;
use tvix_store::proto::NarInfo;
use tvix_store::proto::PathInfo;
use tvix_store::utils::{ServiceUrls, ServiceUrlsGrpc};
use tvix_castore::proto::blob_service_server::BlobServiceServer;
use tvix_castore::proto::directory_service_server::DirectoryServiceServer;
use tvix_castore::proto::GRPCBlobServiceWrapper;
use tvix_castore::proto::GRPCDirectoryServiceWrapper;
use tvix_store::pathinfoservice::PathInfoService;
use tvix_store::proto::path_info_service_server::PathInfoServiceServer;
use tvix_store::proto::GRPCPathInfoServiceWrapper;
#[cfg(any(feature = "fuse", feature = "virtiofs"))]
use tvix_store::pathinfoservice::make_fs;
#[cfg(feature = "fuse")]
use tvix_castore::fs::fuse::FuseDaemon;
#[cfg(feature = "virtiofs")]
use tvix_castore::fs::virtiofs::start_virtiofs_daemon;
#[cfg(feature = "tonic-reflection")]
use tvix_castore::proto::FILE_DESCRIPTOR_SET as CASTORE_FILE_DESCRIPTOR_SET;
#[cfg(feature = "tonic-reflection")]
use tvix_store::proto::FILE_DESCRIPTOR_SET;
use mimalloc::MiMalloc;
#[global_allocator]
static GLOBAL: MiMalloc = MiMalloc;
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
/// Whether to configure OTLP. Set --otlp=false to disable.
#[arg(long, default_missing_value = "true", default_value = "true", num_args(0..=1), require_equals(true), action(clap::ArgAction::Set))]
otlp: bool,
/// A global log level to use when printing logs.
/// It's also possible to set `RUST_LOG` according to
/// `tracing_subscriber::filter::EnvFilter`, which will always have
/// priority.
#[arg(long, default_value_t=Level::INFO)]
log_level: Level,
#[command(subcommand)]
command: Commands,
}
#[derive(Subcommand)]
enum Commands {
/// Runs the tvix-store daemon.
Daemon {
/// The address to listen on.
#[clap(flatten)]
listen_args: tokio_listener::ListenerAddressLFlag,
#[clap(flatten)]
service_addrs: ServiceUrls,
},
/// Imports a list of paths into the store, print the store path for each of them.
Import {
#[clap(value_name = "PATH")]
paths: Vec<PathBuf>,
#[clap(flatten)]
service_addrs: ServiceUrlsGrpc,
},
/// Copies a list of store paths on the system into tvix-store.
Copy {
#[clap(flatten)]
service_addrs: ServiceUrlsGrpc,
/// A path pointing to a JSON file produced by the Nix
/// `__structuredAttrs` containing reference graph information provided
/// by the `exportReferencesGraph` feature.
///
/// This can be used to invoke tvix-store inside a Nix derivation
/// copying to a Tvix store (or outside, if the JSON file is copied
/// out).
///
/// Currently limited to the `closure` key inside that JSON file.
#[arg(value_name = "NIX_ATTRS_JSON_FILE", env = "NIX_ATTRS_JSON_FILE")]
reference_graph_path: PathBuf,
},
/// Mounts a tvix-store at the given mountpoint
#[cfg(feature = "fuse")]
Mount {
#[clap(value_name = "PATH")]
dest: PathBuf,
#[clap(flatten)]
service_addrs: ServiceUrlsGrpc,
/// Number of FUSE threads to spawn.
#[arg(long, env, default_value_t = default_threads())]
threads: usize,
#[arg(long, env, default_value_t = false)]
/// Whether to configure the mountpoint with allow_other.
/// Requires /etc/fuse.conf to contain the `user_allow_other`
/// option, configured via `programs.fuse.userAllowOther` on NixOS.
allow_other: bool,
/// Whether to list elements at the root of the mount point.
/// This is useful if your PathInfoService doesn't provide an
/// (exhaustive) listing.
#[clap(long, short, action)]
list_root: bool,
#[arg(long, default_value_t = true)]
/// Whether to expose blob and directory digests as extended attributes.
show_xattr: bool,
},
/// Starts a tvix-store virtiofs daemon at the given socket path.
#[cfg(feature = "virtiofs")]
#[command(name = "virtiofs")]
VirtioFs {
#[clap(value_name = "PATH")]
socket: PathBuf,
#[clap(flatten)]
service_addrs: ServiceUrlsGrpc,
/// Whether to list elements at the root of the mount point.
/// This is useful if your PathInfoService doesn't provide an
/// (exhaustive) listing.
#[clap(long, short, action)]
list_root: bool,
#[arg(long, default_value_t = true)]
/// Whether to expose blob and directory digests as extended attributes.
show_xattr: bool,
},
}
#[cfg(feature = "fuse")]
fn default_threads() -> usize {
std::thread::available_parallelism()
.map(|threads| threads.into())
.unwrap_or(4)
}
#[instrument(skip_all)]
async fn run_cli(cli: Cli) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
match cli.command {
Commands::Daemon {
listen_args,
service_addrs,
} => {
// initialize stores
let (blob_service, directory_service, path_info_service, nar_calculation_service) =
tvix_store::utils::construct_services(service_addrs).await?;
let mut server = Server::builder().layer(
ServiceBuilder::new()
.layer(
TraceLayer::new_for_grpc().make_span_with(
DefaultMakeSpan::new()
.level(Level::INFO)
.include_headers(true),
),
)
.map_request(tvix_tracing::propagate::tonic::accept_trace),
);
let (_health_reporter, health_service) = tonic_health::server::health_reporter();
#[allow(unused_mut)]
let mut router = server
.add_service(health_service)
.add_service(BlobServiceServer::new(GRPCBlobServiceWrapper::new(
blob_service,
)))
.add_service(DirectoryServiceServer::new(
GRPCDirectoryServiceWrapper::new(directory_service),
))
.add_service(PathInfoServiceServer::new(GRPCPathInfoServiceWrapper::new(
path_info_service,
nar_calculation_service,
)));
#[cfg(feature = "tonic-reflection")]
{
let reflection_svc = tonic_reflection::server::Builder::configure()
.register_encoded_file_descriptor_set(CASTORE_FILE_DESCRIPTOR_SET)
.register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
.build()?;
router = router.add_service(reflection_svc);
}
let listen_address = &listen_args.listen_address.unwrap_or_else(|| {
"[::]:8000"
.parse()
.expect("invalid fallback listen address")
});
let listener = tokio_listener::Listener::bind(
listen_address,
&Default::default(),
&listen_args.listener_options,
)
.await?;
info!(listen_address=%listen_address, "starting daemon");
router.serve_with_incoming(listener).await?;
}
Commands::Import {
paths,
service_addrs,
} => {
// FUTUREWORK: allow flat for single files?
let (blob_service, directory_service, path_info_service, nar_calculation_service) =
tvix_store::utils::construct_services(service_addrs).await?;
// Arc NarCalculationService, as we clone it .
let nar_calculation_service: Arc<dyn NarCalculationService> =
nar_calculation_service.into();
let tasks = paths
.into_iter()
.map(|path| {
tokio::task::spawn({
let blob_service = blob_service.clone();
let directory_service = directory_service.clone();
let path_info_service = path_info_service.clone();
let nar_calculation_service = nar_calculation_service.clone();
async move {
if let Ok(name) = tvix_store::import::path_to_name(&path) {
let resp = tvix_store::import::import_path_as_nar_ca(
&path,
name,
blob_service,
directory_service,
path_info_service,
nar_calculation_service,
)
.await;
if let Ok(output_path) = resp {
// If the import was successful, print the path to stdout.
println!("{}", output_path.to_absolute_path());
}
}
}
})
})
.collect::<Vec<_>>();
try_join_all(tasks).await?;
}
Commands::Copy {
service_addrs,
reference_graph_path,
} => {
let (blob_service, directory_service, path_info_service, _nar_calculation_service) =
tvix_store::utils::construct_services(service_addrs).await?;
// Parse the file at reference_graph_path.
let reference_graph_json = tokio::fs::read(&reference_graph_path).await?;
#[derive(Deserialize, Serialize)]
struct ReferenceGraph<'a> {
#[serde(borrow)]
closure: Vec<ExportedPathInfo<'a>>,
}
let reference_graph: ReferenceGraph<'_> =
serde_json::from_slice(reference_graph_json.as_slice())?;
let lookups_span = info_span!(
"lookup pathinfos",
"indicatif.pb_show" = tracing::field::Empty
);
lookups_span.pb_set_length(reference_graph.closure.len() as u64);
lookups_span.pb_set_style(&tvix_tracing::PB_PROGRESS_STYLE);
lookups_span.pb_start();
// From our reference graph, lookup all pathinfos that might exist.
let elems: Vec<_> = futures::stream::iter(reference_graph.closure)
.map(|elem| {
let path_info_service = path_info_service.clone();
async move {
let resp = path_info_service
.get(*elem.path.digest())
.await
.map(|resp| (elem, resp));
Span::current().pb_inc(1);
resp
}
})
.buffer_unordered(50)
// Filter out all that are already uploaded.
// TODO: check if there's a better combinator for this
.try_filter_map(|(elem, path_info)| {
std::future::ready(if path_info.is_none() {
Ok(Some(elem))
} else {
Ok(None)
})
})
.try_collect()
.await?;
// Run ingest_path on all of them.
let uploads: Vec<_> = futures::stream::iter(elems)
.map(|elem| {
// Map to a future returning the root node, alongside with the closure info.
let blob_service = blob_service.clone();
let directory_service = directory_service.clone();
async move {
// Ingest the given path.
ingest_path(
blob_service,
directory_service,
PathBuf::from(elem.path.to_absolute_path()),
)
.await
.map(|root_node| (elem, root_node))
}
})
.buffer_unordered(10)
.try_collect()
.await?;
// Insert them into the PathInfoService.
// FUTUREWORK: do this properly respecting the reference graph.
for (elem, root_node) in uploads {
// Create and upload a PathInfo pointing to the root_node,
// annotated with information we have from the reference graph.
let path_info = PathInfo {
node: Some(tvix_castore::proto::Node {
node: Some((&root_node).into()),
}),
references: Vec::from_iter(
elem.references.iter().map(|e| e.digest().to_vec().into()),
),
narinfo: Some(NarInfo {
nar_size: elem.nar_size,
nar_sha256: elem.nar_sha256.to_vec().into(),
signatures: vec![],
reference_names: Vec::from_iter(
elem.references.iter().map(|e| e.to_string()),
),
deriver: None,
ca: None,
}),
};
path_info_service.put(path_info).await?;
}
}
#[cfg(feature = "fuse")]
Commands::Mount {
dest,
service_addrs,
list_root,
threads,
allow_other,
show_xattr,
} => {
let (blob_service, directory_service, path_info_service, _nar_calculation_service) =
tvix_store::utils::construct_services(service_addrs).await?;
let fuse_daemon = tokio::task::spawn_blocking(move || {
let fs = make_fs(
blob_service,
directory_service,
path_info_service,
list_root,
show_xattr,
);
info!(mount_path=?dest, "mounting");
FuseDaemon::new(fs, &dest, threads, allow_other)
})
.await??;
// Wait for a ctrl_c and then call fuse_daemon.unmount().
tokio::spawn({
let fuse_daemon = fuse_daemon.clone();
async move {
tokio::signal::ctrl_c().await.unwrap();
info!("interrupt received, unmounting…");
tokio::task::spawn_blocking(move || fuse_daemon.unmount()).await??;
info!("unmount occured, terminating…");
Ok::<_, std::io::Error>(())
}
});
// Wait for the server to finish, which can either happen through it
// being unmounted externally, or receiving a signal invoking the
// handler above.
tokio::task::spawn_blocking(move || fuse_daemon.wait()).await?
}
#[cfg(feature = "virtiofs")]
Commands::VirtioFs {
socket,
service_addrs,
list_root,
show_xattr,
} => {
let (blob_service, directory_service, path_info_service, _nar_calculation_service) =
tvix_store::utils::construct_services(service_addrs).await?;
tokio::task::spawn_blocking(move || {
let fs = make_fs(
blob_service,
directory_service,
path_info_service,
list_root,
show_xattr,
);
info!(socket_path=?socket, "starting virtiofs-daemon");
start_virtiofs_daemon(fs, socket)
})
.await??;
}
};
Ok(())
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
let cli = Cli::parse();
let tracing_handle = {
let mut builder = tvix_tracing::TracingBuilder::default();
builder = builder.level(cli.log_level).enable_progressbar();
#[cfg(feature = "otlp")]
{
if cli.otlp {
builder = builder.enable_otlp("tvix.store");
}
}
builder.build()?
};
tokio::select! {
res = tokio::signal::ctrl_c() => {
res?;
if let Err(e) = tracing_handle.force_shutdown().await {
eprintln!("failed to shutdown tracing: {e}");
}
Ok(())
},
res = run_cli(cli) => {
if let Err(e) = tracing_handle.shutdown().await {
eprintln!("failed to shutdown tracing: {e}");
}
res
}
}
}
