aboutsummaryrefslogtreecommitdiff
path: root/src/main.rs
blob: 3e91b21d696cf62475edb431b02e6a9515897da8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
mod data;
mod error;

mod background;
mod membership;
mod table;
mod table_sync;

mod block;
mod block_ref_table;
mod object_table;
mod version_table;

mod api_server;
mod http_util;
mod rpc_client;
mod rpc_server;
mod server;
mod tls_util;

use std::collections::HashSet;
use std::net::SocketAddr;
use std::path::PathBuf;
use std::sync::Arc;
use structopt::StructOpt;

use error::Error;
use membership::*;
use rpc_client::*;
use server::{TlsConfig, DEFAULT_TIMEOUT};

#[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,

	#[structopt(long = "ca-cert")]
	ca_cert: Option<String>,
	#[structopt(long = "client-cert")]
	client_cert: Option<String>,
	#[structopt(long = "client-key")]
	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),

	/// Remove Garage node from cluster
	#[structopt(name = "remove")]
	Remove(RemoveOpt),
}

#[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,

	/// Location (datacenter) of the node
	datacenter: String,

	/// Number of tokens
	n_tokens: u32,
}

#[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();

	let tls_config = match (opt.ca_cert, opt.client_cert, opt.client_key) {
		(Some(ca_cert), Some(client_cert), Some(client_key)) => Some(TlsConfig {
			ca_cert,
			node_cert: client_cert,
			node_key: client_key,
		}),
		(None, None, None) => None,
		_ => {
			eprintln!("Missing one of: --ca-cert, --node-cert, --node-key. Not using TLS.");
			None
		}
	};

	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 {
		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
		}
		Command::Remove(remove_opt) => cmd_remove(rpc_cli, opt.rpc_host, remove_opt).await,
	};

	if let Err(e) = resp {
		eprintln!("Error: {}", e);
	}
}

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{}",
				hex::encode(&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{}", hex::encode(&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{}", hex::encode(&adv.id), adv.addr);
			}
		}
	}

	Ok(())
}

async fn cmd_configure(
	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(())
}

async fn cmd_remove(
	rpc_cli: RpcAddrClient<Message>,
	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(())
}