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use std::path::PathBuf;
use std::sync::Arc;
use futures_util::future::*;
use tokio::sync::watch;
use crate::background::*;
use crate::config::*;
use crate::error::Error;
use crate::rpc::membership::System;
use crate::rpc::rpc_client::RpcHttpClient;
use crate::rpc::rpc_server::RpcServer;
use crate::table::table_fullcopy::*;
use crate::table::table_sharded::*;
use crate::table::*;
use crate::store::block::*;
use crate::store::block_ref_table::*;
use crate::store::bucket_table::*;
use crate::store::object_table::*;
use crate::store::version_table::*;
use crate::api::api_server;
use crate::admin_rpc::*;
pub struct Garage {
pub config: Config,
pub db: sled::Db,
pub background: Arc<BackgroundRunner>,
pub system: Arc<System>,
pub block_manager: Arc<BlockManager>,
pub bucket_table: Arc<Table<BucketTable, TableFullReplication>>,
pub object_table: Arc<Table<ObjectTable, TableShardedReplication>>,
pub version_table: Arc<Table<VersionTable, TableShardedReplication>>,
pub block_ref_table: Arc<Table<BlockRefTable, TableShardedReplication>>,
}
impl Garage {
pub async fn new(
config: Config,
db: sled::Db,
background: Arc<BackgroundRunner>,
rpc_server: &mut RpcServer,
) -> Arc<Self> {
info!("Initialize membership management system...");
let rpc_http_client = Arc::new(
RpcHttpClient::new(config.max_concurrent_rpc_requests, &config.rpc_tls)
.expect("Could not create RPC client"),
);
let system = System::new(
config.metadata_dir.clone(),
rpc_http_client,
background.clone(),
rpc_server,
);
let data_rep_param = TableShardedReplication {
replication_factor: config.data_replication_factor,
write_quorum: (config.data_replication_factor + 1) / 2,
read_quorum: 1,
};
let meta_rep_param = TableShardedReplication {
replication_factor: config.meta_replication_factor,
write_quorum: (config.meta_replication_factor + 1) / 2,
read_quorum: (config.meta_replication_factor + 1) / 2,
};
let control_rep_param = TableFullReplication::new(
config.meta_epidemic_factor,
(config.meta_epidemic_factor + 1) / 2,
);
info!("Initialize block manager...");
let block_manager = BlockManager::new(
&db,
config.data_dir.clone(),
data_rep_param.clone(),
system.clone(),
rpc_server,
);
info!("Initialize block_ref_table...");
let block_ref_table = Table::new(
BlockRefTable {
background: background.clone(),
block_manager: block_manager.clone(),
},
data_rep_param.clone(),
system.clone(),
&db,
"block_ref".to_string(),
rpc_server,
)
.await;
info!("Initialize version_table...");
let version_table = Table::new(
VersionTable {
background: background.clone(),
block_ref_table: block_ref_table.clone(),
},
meta_rep_param.clone(),
system.clone(),
&db,
"version".to_string(),
rpc_server,
)
.await;
info!("Initialize object_table...");
let object_table = Table::new(
ObjectTable {
background: background.clone(),
version_table: version_table.clone(),
},
meta_rep_param.clone(),
system.clone(),
&db,
"object".to_string(),
rpc_server,
)
.await;
info!("Initialize bucket_table...");
let bucket_table = Table::new(
BucketTable,
control_rep_param.clone(),
system.clone(),
&db,
"bucket".to_string(),
rpc_server,
)
.await;
info!("Initialize Garage...");
let garage = Arc::new(Self {
config,
db,
system: system.clone(),
block_manager,
background,
bucket_table,
object_table,
version_table,
block_ref_table,
});
info!("Crate admin RPC handler...");
AdminRpcHandler::new(garage.clone()).register_handler(rpc_server);
info!("Start block manager background thread...");
garage.block_manager.garage.swap(Some(garage.clone()));
garage.block_manager.clone().spawn_background_worker().await;
garage
}
}
async fn shutdown_signal(send_cancel: watch::Sender<bool>) -> Result<(), Error> {
// Wait for the CTRL+C signal
tokio::signal::ctrl_c()
.await
.expect("failed to install CTRL+C signal handler");
info!("Received CTRL+C, shutting down.");
send_cancel.broadcast(true)?;
Ok(())
}
async fn wait_from(mut chan: watch::Receiver<bool>) -> () {
while let Some(exit_now) = chan.recv().await {
if exit_now {
return;
}
}
}
pub async fn run_server(config_file: PathBuf) -> Result<(), Error> {
info!("Loading configuration...");
let config = read_config(config_file).expect("Unable to read config file");
info!("Opening database...");
let mut db_path = config.metadata_dir.clone();
db_path.push("db");
let db = sled::open(db_path).expect("Unable to open DB");
info!("Initialize RPC server...");
let mut rpc_server = RpcServer::new(config.rpc_bind_addr.clone(), config.rpc_tls.clone());
info!("Initializing background runner...");
let (send_cancel, watch_cancel) = watch::channel(false);
let background = BackgroundRunner::new(16, watch_cancel.clone());
let garage = Garage::new(config, db, background.clone(), &mut rpc_server).await;
info!("Initializing RPC and API servers...");
let run_rpc_server = Arc::new(rpc_server).run(wait_from(watch_cancel.clone()));
let api_server = api_server::run_api_server(garage.clone(), wait_from(watch_cancel.clone()));
futures::try_join!(
garage
.system
.clone()
.bootstrap(&garage.config.bootstrap_peers[..])
.map(|rv| {
info!("Bootstrap done");
Ok(rv)
}),
run_rpc_server.map(|rv| {
info!("RPC server exited");
rv
}),
api_server.map(|rv| {
info!("API server exited");
rv
}),
background.run().map(|rv| {
info!("Background runner exited");
Ok(rv)
}),
shutdown_signal(send_cancel),
)?;
info!("Cleaning up...");
Ok(())
}
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