garage/src/main.rs

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6.6 KiB
Rust
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mod data;
mod error;
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mod background;
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mod membership;
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mod table;
mod table_sharded;
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mod table_sync;
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mod block;
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mod block_ref_table;
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mod object_table;
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mod version_table;
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mod api_server;
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mod http_util;
mod rpc_client;
mod rpc_server;
mod server;
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mod tls_util;
use std::collections::HashSet;
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use std::net::SocketAddr;
use std::path::PathBuf;
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use std::sync::Arc;
use std::time::Duration;
use structopt::StructOpt;
use error::Error;
use membership::*;
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use rpc_client::*;
use server::TlsConfig;
const DEFAULT_TIMEOUT: Duration = Duration::from_secs(10);
#[derive(StructOpt, Debug)]
#[structopt(name = "garage")]
pub struct Opt {
/// RPC connect to this host to execute client operations
#[structopt(short = "h", long = "rpc-host", default_value = "127.0.0.1:3901")]
rpc_host: SocketAddr,
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#[structopt(long = "ca-cert")]
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ca_cert: Option<String>,
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#[structopt(long = "client-cert")]
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client_cert: Option<String>,
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#[structopt(long = "client-key")]
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client_key: Option<String>,
#[structopt(subcommand)]
cmd: Command,
}
#[derive(StructOpt, Debug)]
pub enum Command {
/// Run Garage server
#[structopt(name = "server")]
Server(ServerOpt),
/// Get network status
#[structopt(name = "status")]
Status,
/// Configure Garage node
#[structopt(name = "configure")]
Configure(ConfigureOpt),
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/// Remove Garage node from cluster
#[structopt(name = "remove")]
Remove(RemoveOpt),
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}
#[derive(StructOpt, Debug)]
pub struct ServerOpt {
/// Configuration file
#[structopt(short = "c", long = "config", default_value = "./config.toml")]
config_file: PathBuf,
}
#[derive(StructOpt, Debug)]
pub struct ConfigureOpt {
/// Node to configure (prefix of hexadecimal node id)
node_id: String,
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/// Location (datacenter) of the node
datacenter: String,
/// Number of tokens
n_tokens: u32,
}
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#[derive(StructOpt, Debug)]
pub struct RemoveOpt {
/// Node to configure (prefix of hexadecimal node id)
node_id: String,
/// If this flag is not given, the node won't be removed
#[structopt(long = "yes")]
yes: bool,
}
#[tokio::main]
async fn main() {
let opt = Opt::from_args();
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let tls_config = match (opt.ca_cert, opt.client_cert, opt.client_key) {
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(Some(ca_cert), Some(client_cert), Some(client_key)) => Some(TlsConfig {
ca_cert,
node_cert: client_cert,
node_key: client_key,
}),
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(None, None, None) => None,
_ => {
eprintln!("Missing one of: --ca-cert, --node-cert, --node-key. Not using TLS.");
None
}
};
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let rpc_http_cli =
Arc::new(RpcHttpClient::new(&tls_config).expect("Could not create RPC client"));
let rpc_cli = RpcAddrClient::new(rpc_http_cli, "_membership".into());
let resp = match opt.cmd {
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Command::Server(server_opt) => {
// Abort on panic (same behavior as in Go)
std::panic::set_hook(Box::new(|panic_info| {
eprintln!("{}", panic_info.to_string());
std::process::abort();
}));
server::run_server(server_opt.config_file).await
}
Command::Status => cmd_status(rpc_cli, opt.rpc_host).await,
Command::Configure(configure_opt) => {
cmd_configure(rpc_cli, opt.rpc_host, configure_opt).await
}
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Command::Remove(remove_opt) => cmd_remove(rpc_cli, opt.rpc_host, remove_opt).await,
};
if let Err(e) = resp {
eprintln!("Error: {}", e);
}
}
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async fn cmd_status(rpc_cli: RpcAddrClient<Message>, rpc_host: SocketAddr) -> Result<(), Error> {
let status = match rpc_cli
.call(&rpc_host, &Message::PullStatus, DEFAULT_TIMEOUT)
.await?
{
Message::AdvertiseNodesUp(nodes) => nodes,
resp => return Err(Error::Message(format!("Invalid RPC response: {:?}", resp))),
};
let config = match rpc_cli
.call(&rpc_host, &Message::PullConfig, DEFAULT_TIMEOUT)
.await?
{
Message::AdvertiseConfig(cfg) => cfg,
resp => return Err(Error::Message(format!("Invalid RPC response: {:?}", resp))),
};
println!("Healthy nodes:");
for adv in status.iter() {
if let Some(cfg) = config.members.get(&adv.id) {
println!(
"{:?}\t{}\t{}\t{}",
adv.id, cfg.datacenter, cfg.n_tokens, adv.addr
);
}
}
let status_keys = status.iter().map(|x| x.id.clone()).collect::<HashSet<_>>();
if config
.members
.iter()
.any(|(id, _)| !status_keys.contains(id))
{
println!("\nFailed nodes:");
for (id, cfg) in config.members.iter() {
if !status.iter().any(|x| x.id == *id) {
println!("{:?}\t{}\t{}", id, cfg.datacenter, cfg.n_tokens);
}
}
}
if status
.iter()
.any(|adv| !config.members.contains_key(&adv.id))
{
println!("\nUnconfigured nodes:");
for adv in status.iter() {
if !config.members.contains_key(&adv.id) {
println!("{:?}\t{}", adv.id, adv.addr);
}
}
}
Ok(())
}
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async fn cmd_configure(
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rpc_cli: RpcAddrClient<Message>,
rpc_host: SocketAddr,
args: ConfigureOpt,
) -> Result<(), Error> {
let status = match rpc_cli
.call(&rpc_host, &Message::PullStatus, DEFAULT_TIMEOUT)
.await?
{
Message::AdvertiseNodesUp(nodes) => nodes,
resp => return Err(Error::Message(format!("Invalid RPC response: {:?}", resp))),
};
let mut candidates = vec![];
for adv in status.iter() {
if hex::encode(&adv.id).starts_with(&args.node_id) {
candidates.push(adv.id.clone());
}
}
if candidates.len() != 1 {
return Err(Error::Message(format!(
"{} matching nodes",
candidates.len()
)));
}
let mut config = match rpc_cli
.call(&rpc_host, &Message::PullConfig, DEFAULT_TIMEOUT)
.await?
{
Message::AdvertiseConfig(cfg) => cfg,
resp => return Err(Error::Message(format!("Invalid RPC response: {:?}", resp))),
};
config.members.insert(
candidates[0].clone(),
NetworkConfigEntry {
datacenter: args.datacenter,
n_tokens: args.n_tokens,
},
);
config.version += 1;
rpc_cli
.call(
&rpc_host,
&Message::AdvertiseConfig(config),
DEFAULT_TIMEOUT,
)
.await?;
Ok(())
}
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async fn cmd_remove(
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rpc_cli: RpcAddrClient<Message>,
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rpc_host: SocketAddr,
args: RemoveOpt,
) -> Result<(), Error> {
let mut config = match rpc_cli
.call(&rpc_host, &Message::PullConfig, DEFAULT_TIMEOUT)
.await?
{
Message::AdvertiseConfig(cfg) => cfg,
resp => return Err(Error::Message(format!("Invalid RPC response: {:?}", resp))),
};
let mut candidates = vec![];
for (key, _) in config.members.iter() {
if hex::encode(key).starts_with(&args.node_id) {
candidates.push(key.clone());
}
}
if candidates.len() != 1 {
return Err(Error::Message(format!(
"{} matching nodes",
candidates.len()
)));
}
if !args.yes {
return Err(Error::Message(format!(
"Add the flag --yes to really remove {:?} from the cluster",
candidates[0]
)));
}
config.members.remove(&candidates[0]);
config.version += 1;
rpc_cli
.call(
&rpc_host,
&Message::AdvertiseConfig(config),
DEFAULT_TIMEOUT,
)
.await?;
Ok(())
}