aboutsummaryrefslogtreecommitdiff
path: root/src/admin_rpc.rs
blob: 17ef50726030b3e0daac75f06a5d72aa08131698 (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
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
use std::sync::Arc;

use serde::{Deserialize, Serialize};
use tokio::sync::watch;

use crate::data::*;
use crate::error::Error;
use crate::server::Garage;

use crate::table::*;

use crate::rpc::rpc_client::*;
use crate::rpc::rpc_server::*;

use crate::store::block_ref_table::*;
use crate::store::bucket_table::*;
use crate::store::version_table::*;

use crate::*;

pub const ADMIN_RPC_TIMEOUT: Duration = Duration::from_secs(30);
pub const ADMIN_RPC_PATH: &str = "_admin";

#[derive(Debug, Serialize, Deserialize)]
pub enum AdminRPC {
	BucketOperation(BucketOperation),
	LaunchRepair(RepairOpt),

	// Replies
	Ok(String),
	BucketList(Vec<String>),
	BucketInfo(Bucket),
}

impl RpcMessage for AdminRPC {}

pub struct AdminRpcHandler {
	garage: Arc<Garage>,
	rpc_client: Arc<RpcClient<AdminRPC>>,
}

impl AdminRpcHandler {
	pub fn new(garage: Arc<Garage>) -> Arc<Self> {
		let rpc_client = garage.system.clone().rpc_client::<AdminRPC>(ADMIN_RPC_PATH);
		Arc::new(Self { garage, rpc_client })
	}

	pub fn register_handler(self: Arc<Self>, rpc_server: &mut RpcServer) {
		rpc_server.add_handler::<AdminRPC, _, _>(ADMIN_RPC_PATH.to_string(), move |msg, _addr| {
			let self2 = self.clone();
			async move {
				match msg {
					AdminRPC::BucketOperation(bo) => self2.handle_bucket_cmd(bo).await,
					AdminRPC::LaunchRepair(opt) => self2.handle_launch_repair(opt).await,
					_ => Err(Error::BadRequest(format!("Invalid RPC"))),
				}
			}
		});
	}

	async fn handle_bucket_cmd(&self, cmd: BucketOperation) -> Result<AdminRPC, Error> {
		match cmd {
			BucketOperation::List => {
				let bucket_names = self
					.garage
					.bucket_table
					.get_range(&EmptyKey, None, Some(()), 10000)
					.await?
					.iter()
					.map(|b| b.name.to_string())
					.collect::<Vec<_>>();
				Ok(AdminRPC::BucketList(bucket_names))
			}
			BucketOperation::Info(query) => {
				let bucket = self
					.garage
					.bucket_table
					.get(&EmptyKey, &query.name)
					.await?
					.filter(|b| !b.deleted);
				match bucket {
					Some(b) => Ok(AdminRPC::BucketInfo(b)),
					None => Err(Error::BadRequest(format!(
						"Bucket {} not found",
						query.name
					))),
				}
			}
			BucketOperation::Create(query) => {
				let bucket = self.garage.bucket_table.get(&EmptyKey, &query.name).await?;
				if bucket.as_ref().filter(|b| !b.deleted).is_some() {
					return Err(Error::BadRequest(format!(
						"Bucket {} already exists",
						query.name
					)));
				}
				let new_time = match bucket {
					Some(b) => std::cmp::max(b.timestamp + 1, now_msec()),
					None => now_msec(),
				};
				self.garage
					.bucket_table
					.insert(&Bucket::new(query.name.clone(), new_time, false, vec![]))
					.await?;
				Ok(AdminRPC::Ok(format!("Bucket {} was created.", query.name)))
			}
			BucketOperation::Delete(query) => {
				let bucket = match self
					.garage
					.bucket_table
					.get(&EmptyKey, &query.name)
					.await?
					.filter(|b| !b.deleted)
				{
					None => {
						return Err(Error::BadRequest(format!(
							"Bucket {} does not exist",
							query.name
						)));
					}
					Some(b) => b,
				};
				let objects = self
					.garage
					.object_table
					.get_range(&query.name, None, Some(()), 10)
					.await?;
				if !objects.is_empty() {
					return Err(Error::BadRequest(format!(
						"Bucket {} is not empty",
						query.name
					)));
				}
				if !query.yes {
					return Err(Error::BadRequest(format!(
						"Add --yes flag to really perform this operation"
					)));
				}
				self.garage
					.bucket_table
					.insert(&Bucket::new(
						query.name.clone(),
						std::cmp::max(bucket.timestamp + 1, now_msec()),
						true,
						vec![],
					))
					.await?;
				Ok(AdminRPC::Ok(format!("Bucket {} was deleted.", query.name)))
			}
			_ => {
				// TODO
				Err(Error::Message(format!("Not implemented")))
			}
		}
	}

	async fn handle_launch_repair(self: &Arc<Self>, opt: RepairOpt) -> Result<AdminRPC, Error> {
		if !opt.yes {
			return Err(Error::BadRequest(format!(
				"Please provide the --yes flag to initiate repair operations."
			)));
		}
		if opt.all_nodes {
			let mut opt_to_send = opt.clone();
			opt_to_send.all_nodes = false;

			let mut failures = vec![];
			let ring = self.garage.system.ring.borrow().clone();
			for node in ring.config.members.keys() {
				if self
					.rpc_client
					.call(
						*node,
						AdminRPC::LaunchRepair(opt_to_send.clone()),
						ADMIN_RPC_TIMEOUT,
					)
					.await
					.is_err()
				{
					failures.push(node.clone());
				}
			}
			if failures.is_empty() {
				Ok(AdminRPC::Ok(format!("Repair launched on all nodes")))
			} else {
				Err(Error::Message(format!(
					"Could not launch repair on nodes: {:?} (launched successfully on other nodes)",
					failures
				)))
			}
		} else {
			let self2 = self.clone();
			self.garage
				.system
				.background
				.spawn_worker("Repair worker".into(), move |must_exit| async move {
					self2.repair_worker(opt, must_exit).await
				})
				.await;
			Ok(AdminRPC::Ok(format!(
				"Repair launched on {:?}",
				self.garage.system.id
			)))
		}
	}

	async fn repair_worker(
		self: Arc<Self>,
		opt: RepairOpt,
		must_exit: watch::Receiver<bool>,
	) -> Result<(), Error> {
		let todo = |x| opt.what.as_ref().map(|y| *y == x).unwrap_or(true);

		if todo(RepairWhat::Tables) {
			info!("Launching a full sync of tables");
			self.garage
				.bucket_table
				.syncer
				.load_full()
				.unwrap()
				.add_full_scan()
				.await;
			self.garage
				.object_table
				.syncer
				.load_full()
				.unwrap()
				.add_full_scan()
				.await;
			self.garage
				.version_table
				.syncer
				.load_full()
				.unwrap()
				.add_full_scan()
				.await;
			self.garage
				.block_ref_table
				.syncer
				.load_full()
				.unwrap()
				.add_full_scan()
				.await;
		}

		// TODO: wait for full sync to finish before proceeding to the rest?

		if todo(RepairWhat::Versions) {
			info!("Repairing the versions table");
			self.repair_versions(&must_exit).await?;
		}

		if todo(RepairWhat::BlockRefs) {
			info!("Repairing the block refs table");
			self.repair_block_ref(&must_exit).await?;
		}

		if opt.what.is_none() {
			info!("Repairing the RC");
			self.repair_rc(&must_exit).await?;
		}

		if todo(RepairWhat::Blocks) {
			info!("Repairing the stored blocks");
			self.garage
				.block_manager
				.repair_data_store(&must_exit)
				.await?;
		}

		Ok(())
	}

	async fn repair_versions(&self, must_exit: &watch::Receiver<bool>) -> Result<(), Error> {
		let mut pos = vec![];

		while let Some((item_key, item_bytes)) = self.garage.version_table.store.get_gt(&pos)? {
			pos = item_key.to_vec();

			let version = rmp_serde::decode::from_read_ref::<_, Version>(item_bytes.as_ref())?;
			if version.deleted {
				continue;
			}
			let object = self
				.garage
				.object_table
				.get(&version.bucket, &version.key)
				.await?;
			let version_exists = match object {
				Some(o) => o.versions().iter().any(|x| x.uuid == version.uuid),
				None => {
					warn!(
						"Repair versions: object for version {:?} not found",
						version
					);
					false
				}
			};
			if !version_exists {
				info!("Repair versions: marking version as deleted: {:?}", version);
				self.garage
					.version_table
					.insert(&Version::new(
						version.uuid,
						version.bucket,
						version.key,
						true,
						vec![],
					))
					.await?;
			}

			if *must_exit.borrow() {
				break;
			}
		}
		Ok(())
	}

	async fn repair_block_ref(&self, must_exit: &watch::Receiver<bool>) -> Result<(), Error> {
		let mut pos = vec![];

		while let Some((item_key, item_bytes)) = self.garage.block_ref_table.store.get_gt(&pos)? {
			pos = item_key.to_vec();

			let block_ref = rmp_serde::decode::from_read_ref::<_, BlockRef>(item_bytes.as_ref())?;
			if block_ref.deleted {
				continue;
			}
			let version = self
				.garage
				.version_table
				.get(&block_ref.version, &EmptyKey)
				.await?;
			let ref_exists = match version {
				Some(v) => !v.deleted,
				None => {
					warn!(
						"Block ref repair: version for block ref {:?} not found",
						block_ref
					);
					false
				}
			};
			if !ref_exists {
				info!(
					"Repair block ref: marking block_ref as deleted: {:?}",
					block_ref
				);
				self.garage
					.block_ref_table
					.insert(&BlockRef {
						block: block_ref.block,
						version: block_ref.version,
						deleted: true,
					})
					.await?;
			}

			if *must_exit.borrow() {
				break;
			}
		}
		Ok(())
	}

	async fn repair_rc(&self, _must_exit: &watch::Receiver<bool>) -> Result<(), Error> {
		// TODO
		warn!("repair_rc: not implemented");
		Ok(())
	}
}