use clap::Subcommand;
use data_encoding::BASE64;
use futures::future::try_join_all;
use nix_compat::store_path;
use std::io;
use std::path::Path;
use std::path::PathBuf;
use tracing_subscriber::prelude::*;
use tvix_store::blobservice;
use tvix_store::directoryservice;
use tvix_store::import;
use tvix_store::pathinfoservice;
use tvix_store::proto::blob_service_server::BlobServiceServer;
use tvix_store::proto::directory_service_server::DirectoryServiceServer;
use tvix_store::proto::node::Node;
use tvix_store::proto::path_info_service_server::PathInfoServiceServer;
use tvix_store::proto::GRPCBlobServiceWrapper;
use tvix_store::proto::GRPCDirectoryServiceWrapper;
use tvix_store::proto::GRPCPathInfoServiceWrapper;
use tvix_store::proto::NarInfo;
use tvix_store::proto::PathInfo;
use tvix_store::FUSE;
#[cfg(feature = "reflection")]
use tvix_store::proto::FILE_DESCRIPTOR_SET;
use clap::Parser;
use tonic::{transport::Server, Result};
use tracing::{info, Level};
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
/// Whether to log in JSON
#[arg(long)]
json: bool,
#[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.
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,
},
/// 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,
/// 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,
},
}
#[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);
let subscriber = tracing_subscriber::registry()
.with(if cli.json {
Some(
tracing_subscriber::fmt::Layer::new()
.with_writer(io::stderr.with_max_level(level))
.json(),
)
} else {
None
})
.with(if !cli.json {
Some(
tracing_subscriber::fmt::Layer::new()
.with_writer(io::stderr.with_max_level(level))
.pretty(),
)
} else {
None
});
tracing::subscriber::set_global_default(subscriber).expect("Unable to set global subscriber");
match cli.command {
Commands::Daemon {
listen_address,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
} => {
// initialize stores
let blob_service = blobservice::from_addr(&blob_service_addr)?;
let directory_service = directoryservice::from_addr(&directory_service_addr)?;
let path_info_service = pathinfoservice::from_addr(
&path_info_service_addr,
blob_service.clone(),
directory_service.clone(),
)?;
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::from(
blob_service,
)))
.add_service(DirectoryServiceServer::new(
GRPCDirectoryServiceWrapper::from(directory_service),
))
.add_service(PathInfoServiceServer::new(
GRPCPathInfoServiceWrapper::from(path_info_service),
));
#[cfg(feature = "reflection")]
{
let reflection_svc = tonic_reflection::server::Builder::configure()
.register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
.build()?;
router = router.add_service(reflection_svc);
}
info!("tvix-store listening on {}", listen_address);
router.serve(listen_address).await?;
}
Commands::Import {
paths,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
} => {
// FUTUREWORK: allow flat for single files?
let blob_service = blobservice::from_addr(&blob_service_addr)?;
let directory_service = directoryservice::from_addr(&directory_service_addr)?;
let path_info_service = pathinfoservice::from_addr(
&path_info_service_addr,
blob_service.clone(),
directory_service.clone(),
)?;
let tasks = paths
.into_iter()
.map(|path| {
let blob_service = blob_service.clone();
let directory_service = directory_service.clone();
let path_info_service = path_info_service.clone();
let task = tokio::task::spawn_blocking(move || -> io::Result<()> {
// Ingest the path into blob and directory service.
let root_node = import::ingest_path(
blob_service.clone(),
directory_service.clone(),
&path,
)
.expect("failed to ingest path");
// Ask the PathInfoService for the NAR size and sha256
let (nar_size, nar_sha256) = path_info_service.calculate_nar(&root_node)?;
// TODO: make a path_to_name helper function?
let name = path
.file_name()
.expect("path must not be ..")
.to_str()
.expect("path must be valid unicode");
let output_path = store_path::build_nar_based_store_path(&nar_sha256, name);
// assemble a new root_node with a name that is derived from the nar hash.
let root_node =
root_node.rename(output_path.to_string().into_bytes().into());
// assemble the [crate::proto::PathInfo] object.
let path_info = PathInfo {
node: Some(tvix_store::proto::Node {
node: Some(root_node),
}),
// There's no reference scanning on path contents ingested like this.
references: vec![],
narinfo: Some(NarInfo {
nar_size,
nar_sha256: nar_sha256.to_vec().into(),
signatures: vec![],
reference_names: vec![],
}),
};
// put into [PathInfoService], and return the PathInfo that we get back
// from there (it might contain additional signatures).
let path_info = path_info_service.put(path_info)?;
log_node(&path_info.node.unwrap().node.unwrap(), &path);
Ok(())
});
task
})
.collect::<Vec<_>>();
try_join_all(tasks).await?;
}
#[cfg(feature = "fuse")]
Commands::Mount {
dest,
blob_service_addr,
directory_service_addr,
path_info_service_addr,
list_root,
} => {
let blob_service = blobservice::from_addr(&blob_service_addr)?;
let directory_service = directoryservice::from_addr(&directory_service_addr)?;
let path_info_service = pathinfoservice::from_addr(
&path_info_service_addr,
blob_service.clone(),
directory_service.clone(),
)?;
let mut fuse_session = tokio::task::spawn_blocking(move || {
let f = FUSE::new(
blob_service,
directory_service,
path_info_service,
list_root,
);
fuser::Session::new(f, &dest, &[])
})
.await??;
// grab a handle to unmount the file system, and register a signal
// handler.
let mut fuse_unmounter = fuse_session.unmount_callable();
tokio::spawn(async move {
tokio::signal::ctrl_c().await.unwrap();
info!("interrupt received, unmounting…");
fuse_unmounter.unmount().unwrap();
});
// Start the fuse filesystem and wait for its completion, which
// happens when it's unmounted externally, or via the signal handler
// task.
tokio::task::spawn_blocking(move || -> io::Result<()> {
info!("mounting tvix-store on {:?}", fuse_session.mountpoint());
let res = fuse_session.run()?;
info!("unmount occured, terminating…");
Ok(res)
})
.await??;
}
};
Ok(())
}
fn log_node(node: &Node, path: &Path) {
match node {
Node::Directory(directory_node) => {
info!(
path = ?path,
name = ?directory_node.name,
digest = BASE64.encode(&directory_node.digest),
"import successful",
)
}
Node::File(file_node) => {
info!(
path = ?path,
name = ?file_node.name,
digest = BASE64.encode(&file_node.digest),
"import successful"
)
}
Node::Symlink(symlink_node) => {
info!(
path = ?path,
name = ?symlink_node.name,
target = ?symlink_node.target,
"import successful"
)
}
}
}
