use clap::Parser;
use clap::Subcommand;
use futures::future::try_join_all;
use nix_compat::path_info::ExportedPathInfo;
use serde::Deserialize;
use serde::Serialize;
use std::path::PathBuf;
use std::sync::Arc;
use tokio_listener::Listener;
use tokio_listener::SystemOptions;
use tokio_listener::UserOptions;
use tonic::transport::Server;
use tracing::info;
use tracing::Level;
use tracing_subscriber::EnvFilter;
use tracing_subscriber::Layer;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
use tvix_castore::import::ingest_path;
use tvix_store::proto::NarInfo;
use tvix_store::proto::PathInfo;
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 = "otlp")]
use opentelemetry::KeyValue;
#[cfg(feature = "otlp")]
use opentelemetry_sdk::{
resource::{ResourceDetector, SdkProvidedResourceDetector},
trace::BatchConfig,
Resource,
};
#[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;
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
/// Whether to log in JSON
#[arg(long)]
json: bool,
/// 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)]
log_level: Option<Level>,
#[command(subcommand)]
command: Commands,
}
#[derive(Subcommand)]
enum Commands {
/// Runs the tvix-store daemon.
Daemon {
#[arg(long, short = 'l')]
listen_address: Option<String>,
#[arg(long, env, default_value = "sled:///var/lib/tvix-store/blobs.sled")]
blob_service_addr: String,
#[arg(
long,
env,
default_value = "sled:///var/lib/tvix-store/directories.sled"
)]
directory_service_addr: String,
#[arg(long, env, default_value = "sled:///var/lib/tvix-store/pathinfo.sled")]
path_info_service_addr: String,
},
/// Imports a list of paths into the store, print the store path for each of them.
Import {
#[clap(value_name = "PATH")]
paths: Vec<PathBuf>,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
blob_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
directory_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
path_info_service_addr: String,
},
/// Copies a list of store paths on the system into tvix-store.
Copy {
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
blob_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
directory_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
path_info_service_addr: String,
/// 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,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
blob_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
directory_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
path_info_service_addr: String,
/// 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,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
blob_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
directory_service_addr: String,
#[arg(long, env, default_value = "grpc+http://[::1]:8000")]
path_info_service_addr: String,
/// 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(all(feature = "fuse", not(target_os = "macos")))]
fn default_threads() -> usize {
std::thread::available_parallelism()
.map(|threads| threads.into())
.unwrap_or(4)
}
// On MacFUSE only a single channel will receive ENODEV when the file system is
// unmounted and so all the other channels will block forever.
// See https://github.com/osxfuse/osxfuse/issues/974
#[cfg(all(feature = "fuse", target_os = "macos"))]
fn default_threads() -> usize {
1
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let cli = Cli::parse();
// configure log settings
let level = cli.log_level.unwrap_or(Level::INFO);
// Set up the tracing subscriber.
let subscriber = tracing_subscriber::registry()
.with(
cli.json.then_some(
tracing_subscriber::fmt::Layer::new()
.with_writer(std::io::stderr)
.json()
.with_filter(
EnvFilter::builder()
.with_default_directive(level.into())
.from_env()
.expect("invalid RUST_LOG"),
),
),
)
.with(
(!cli.json).then_some(
tracing_subscriber::fmt::Layer::new()
.with_writer(std::io::stderr)
.pretty()
.with_filter(
EnvFilter::builder()
.with_default_directive(level.into())
.from_env()
.expect("invalid RUST_LOG"),
),
),
);
// Add the otlp layer (when otlp is enabled, and it's not disabled in the CLI)
// then init the registry.
// If the feature is feature-flagged out, just init without adding the layer.
// It's necessary to do this separately, as every with() call chains the
// layer into the type of the registry.
#[cfg(feature = "otlp")]
{
let subscriber = if cli.otlp {
let tracer = opentelemetry_otlp::new_pipeline()
.tracing()
.with_exporter(opentelemetry_otlp::new_exporter().tonic())
.with_batch_config(BatchConfig::default())
.with_trace_config(opentelemetry_sdk::trace::config().with_resource({
// use SdkProvidedResourceDetector.detect to detect resources,
// but replace the default service name with our default.
// https://github.com/open-telemetry/opentelemetry-rust/issues/1298
let resources =
SdkProvidedResourceDetector.detect(std::time::Duration::from_secs(0));
// SdkProvidedResourceDetector currently always sets
// `service.name`, but we don't like its default.
if resources.get("service.name".into()).unwrap() == "unknown_service".into() {
resources.merge(&Resource::new([KeyValue::new(
"service.name",
"tvix.store",
)]))
} else {
resources
}
}))
.install_batch(opentelemetry_sdk::runtime::Tokio)?;
// Create a tracing layer with the configured tracer
let layer = tracing_opentelemetry::layer().with_tracer(tracer);
subscriber.with(Some(layer))
} else {
subscriber.with(None)
};
subscriber.try_init()?;
}
// Init the registry (when otlp is not enabled)
#[cfg(not(feature = "otlp"))]
{
subscriber.try_init()?;
}
match cli.command {
Commands::Daemon {
listen_address,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
} => {
// initialize stores
let (blob_service, directory_service, path_info_service) =
tvix_store::utils::construct_services(
blob_service_addr,
directory_service_addr,
path_info_service_addr,
)
.await?;
let listen_address = listen_address
.unwrap_or_else(|| "[::]:8000".to_string())
.parse()
.unwrap();
let mut server = Server::builder();
#[allow(unused_mut)]
let mut router = server
.add_service(BlobServiceServer::new(GRPCBlobServiceWrapper::new(
blob_service,
)))
.add_service(DirectoryServiceServer::new(
GRPCDirectoryServiceWrapper::new(directory_service),
))
.add_service(PathInfoServiceServer::new(GRPCPathInfoServiceWrapper::new(
Arc::from(path_info_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);
}
info!(listen_address=%listen_address, "starting daemon");
let listener = Listener::bind(
&listen_address,
&SystemOptions::default(),
&UserOptions::default(),
)
.await?;
router.serve_with_incoming(listener).await?;
}
Commands::Import {
paths,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
} => {
// FUTUREWORK: allow flat for single files?
let (blob_service, directory_service, path_info_service) =
tvix_store::utils::construct_services(
blob_service_addr,
directory_service_addr,
path_info_service_addr,
)
.await?;
// Arc the PathInfoService, as we clone it .
let path_info_service: Arc<dyn PathInfoService> = path_info_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();
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,
)
.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 {
blob_service_addr,
directory_service_addr,
path_info_service_addr,
reference_graph_path,
} => {
let (blob_service, directory_service, path_info_service) =
tvix_store::utils::construct_services(
blob_service_addr,
directory_service_addr,
path_info_service_addr,
)
.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())?;
// We currently simply upload all store paths in linear order.
// FUTUREWORK: properly walk the reference graph from the leaves, and upload multiple in parallel.
for elem in reference_graph.closure {
// Skip if that store path already exists
if path_info_service.get(*elem.path.digest()).await?.is_some() {
continue;
}
let path: PathBuf = elem.path.to_absolute_path().into();
// Ingest the given path
let root_node =
ingest_path(blob_service.clone(), directory_service.clone(), path).await?;
// 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),
}),
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,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
list_root,
threads,
allow_other,
show_xattr,
} => {
let (blob_service, directory_service, path_info_service) =
tvix_store::utils::construct_services(
blob_service_addr,
directory_service_addr,
path_info_service_addr,
)
.await?;
let mut fuse_daemon = tokio::task::spawn_blocking(move || {
let fs = make_fs(
blob_service,
directory_service,
Arc::from(path_info_service),
list_root,
show_xattr,
);
info!(mount_path=?dest, "mounting");
FuseDaemon::new(fs, &dest, threads, allow_other)
})
.await??;
// grab a handle to unmount the file system, and register a signal
// handler.
tokio::spawn(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>(())
})
.await??;
}
#[cfg(feature = "virtiofs")]
Commands::VirtioFs {
socket,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
list_root,
show_xattr,
} => {
let (blob_service, directory_service, path_info_service) =
tvix_store::utils::construct_services(
blob_service_addr,
directory_service_addr,
path_info_service_addr,
)
.await?;
tokio::task::spawn_blocking(move || {
let fs = make_fs(
blob_service,
directory_service,
Arc::from(path_info_service),
list_root,
show_xattr,
);
info!(socket_path=?socket, "starting virtiofs-daemon");
start_virtiofs_daemon(fs, socket)
})
.await??;
}
};
Ok(())
}
