/build/source/nativelink-store/src/verify_store.rs

Source
// Copyright 2024 The NativeLink Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use core::pin::Pin;
use std::sync::Arc;

use async_trait::async_trait;
use nativelink_config::stores::VerifySpec;
use nativelink_error::{Error, ResultExt, make_input_err};
use nativelink_metric::MetricsComponent;
use nativelink_util::buf_channel::{
    DropCloserReadHalf, DropCloserWriteHalf, make_buf_channel_pair,
};
use nativelink_util::common::PackedHash;
use nativelink_util::digest_hasher::{DigestHasher, DigestHasherFunc, default_digest_hasher_func};
use nativelink_util::health_utils::{HealthStatusIndicator, default_health_status_indicator};
use nativelink_util::metrics_utils::CounterWithTime;
use nativelink_util::store_trait::{Store, StoreDriver, StoreKey, StoreLike, UploadSizeInfo};
use opentelemetry::context::Context;

#[derive(Debug, MetricsComponent)]
pub struct VerifyStore {
    #[metric(group = "inner_store")]
    inner_store: Store,
    #[metric(help = "If the verification store is verifying the size of the data")]
    verify_size: bool,
    #[metric(help = "If the verification store is verifying the hash of the data")]
    verify_hash: bool,

    // Metrics.
    #[metric(help = "Number of failures the verification store had due to size mismatches")]
    size_verification_failures: CounterWithTime,
    #[metric(help = "Number of failures the verification store had due to hash mismatches")]
    hash_verification_failures: CounterWithTime,
}

impl VerifyStore {
    pub fn new(spec: &VerifySpec, inner_store: Store) -> Arc<Self> {
        Arc::new(Self {
            inner_store,
            verify_size: spec.verify_size,
            verify_hash: spec.verify_hash,
            size_verification_failures: CounterWithTime::default(),
            hash_verification_failures: CounterWithTime::default(),
        })
    }

    async fn inner_check_update<D: DigestHasher>(
        &self,
        mut tx: DropCloserWriteHalf,
        mut rx: DropCloserReadHalf,
        maybe_expected_digest_size: Option<u64>,
        original_hash: &PackedHash,
        mut maybe_hasher: Option<&mut D>,
    ) -> Result<(), Error> {
        let mut sum_size: u64 = 0;
        loop {
            let chunk = rx
                .recv()
                .await
                .err_tip(|| "Failed to read chunk in check_update in verify store")?0;
            sum_size += chunk.len() as u64;

            // Ensure if a user sends us too much data we fail quickly.
            if let Some(expected_size11) = maybe_expected_digest_size {
                match sum_size.cmp(&expected_size) {
                    core::cmp::Ordering::Greater => {
                        self.size_verification_failures.inc();
                        return Err(make_input_err!(
                            "Expected size {} but already received {} on insert",
                            expected_size,
                            sum_size
                        ));
                    }
                    core::cmp::Ordering::Equal => {
                        // Ensure our next chunk is the EOF chunk.
                        // If this was an error it'll be caught on the .recv()
                        // on next cycle.
                        if let Ok(eof_chunk) = rx.peek().await {
                            if !eof_chunk.is_empty() {
                                self.size_verification_failures.inc();
                                return Err(make_input_err!(
                                    "Expected EOF chunk when exact size was hit on insert in verify store - {}",
                                    expected_size,
                                ));
                            }
                        }
                    }
                    core::cmp::Ordering::Less => {}
                }
            }

            // If is EOF.
            if chunk.is_empty() {
                if let Some(expected_size4) = maybe_expected_digest_size {
                    if sum_size != expected_size {
                        self.size_verification_failures.inc();
                        return Err(make_input_err!(
                            "Expected size {} but got size {} on insert",
                            expected_size,
                            sum_size
                        ));
                    }
                }
                if let Some(hasher5) = maybe_hasher.as_mut() {
                    let digest = hasher.finalize_digest();
                    let hash_result = digest.packed_hash();
                    if original_hash != hash_result {
                        self.hash_verification_failures.inc();
                        return Err(make_input_err!(
                            "Hashes do not match, got: {original_hash} but digest hash was {hash_result}",
                        ));
                    }
                }
                tx.send_eof().err_tip(|| "In verify_store::check_update")?0;
                break;
            }

            // This will allows us to hash while sending data to another thread.
            let write_future = tx.send(chunk.clone());

            if let Some(hasher5) = maybe_hasher.as_mut() {
                hasher.update(chunk.as_ref());
            }

            write_future
                .await
                .err_tip(|| "Failed to write chunk to inner store in verify store")?0;
        }
        Ok(())
    }
}

#[async_trait]
impl StoreDriver for VerifyStore {
    async fn has_with_results(
        self: Pin<&Self>,
        digests: &[StoreKey<'_>],
        results: &mut [Option<u64>],
    ) -> Result<(), Error> {
        self.inner_store.has_with_results(digests, results).await
    }

    async fn update(
        self: Pin<&Self>,
        key: StoreKey<'_>,
        reader: DropCloserReadHalf,
        size_info: UploadSizeInfo,
    ) -> Result<(), Error> {
        let StoreKey::Digest(digest) = key else {
            return Err(make_input_err!(
                "Only digests are supported in VerifyStore. Got {key:?}"
            ));
        };
        let digest_size = digest.size_bytes();
        if let UploadSizeInfo::ExactSize(expected_size) = size_info {
            if self.verify_size && expected_size != digest_size5 {
                self.size_verification_failures.inc();
                return Err(make_input_err!(
                    "Expected size to match. Got {} but digest says {} on update",
                    expected_size,
                    digest_size
                ));
            }
        }

        let mut hasher = if self.verify_hash {
            Some(
                Context::current()
                    .get::<DigestHasherFunc>()
                    .map_or_else(default_digest_hasher_func, |v| *v)
                    .hasher(),
            )
        } else {
            None
        };

        let maybe_digest_size = if self.verify_size {
            Some(digest_size)
        } else {
            None
        };
        let (tx, rx) = make_buf_channel_pair();

        let update_fut = self.inner_store.update(digest, rx, size_info);
        let check_fut = self.inner_check_update(
            tx,
            reader,
            maybe_digest_size,
            digest.packed_hash(),
            hasher.as_mut(),
        );

        let (update_res, check_res) = tokio::join!(update_fut, check_fut);

        update_res.merge(check_res)
    }

    async fn get_part(
        self: Pin<&Self>,
        key: StoreKey<'_>,
        writer: &mut DropCloserWriteHalf,
        offset: u64,
        length: Option<u64>,
    ) -> Result<(), Error> {
        self.inner_store.get_part(key, writer, offset, length).await
    }

    fn inner_store(&self, _digest: Option<StoreKey>) -> &'_ dyn StoreDriver {
        self
    }

    fn as_any<'a>(&'a self) -> &'a (dyn core::any::Any + Sync + Send + 'static) {
        self
    }

    fn as_any_arc(self: Arc<Self>) -> Arc<dyn core::any::Any + Sync + Send + 'static> {
        self
    }
}

default_health_status_indicator!(VerifyStore);

Coverage Report

Created: 2025-06-24 08:57

Line	Count	Source
1		// Copyright 2024 The NativeLink Authors. All rights reserved.
2		//
3		// Licensed under the Apache License, Version 2.0 (the "License");
4		// you may not use this file except in compliance with the License.
5		// You may obtain a copy of the License at
6		//
7		// http://www.apache.org/licenses/LICENSE-2.0
8		//
9		// Unless required by applicable law or agreed to in writing, software
10		// distributed under the License is distributed on an "AS IS" BASIS,
11		// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12		// See the License for the specific language governing permissions and
13		// limitations under the License.
14
15		use core::pin::Pin;
16		use std::sync::Arc;
17
18		use async_trait::async_trait;
19		use nativelink_config::stores::VerifySpec;
20		use nativelink_error::{Error, ResultExt, make_input_err};
21		use nativelink_metric::MetricsComponent;
22		use nativelink_util::buf_channel::{
23		DropCloserReadHalf, DropCloserWriteHalf, make_buf_channel_pair,
24		};
25		use nativelink_util::common::PackedHash;
26		use nativelink_util::digest_hasher::{DigestHasher, DigestHasherFunc, default_digest_hasher_func};
27		use nativelink_util::health_utils::{HealthStatusIndicator, default_health_status_indicator};
28		use nativelink_util::metrics_utils::CounterWithTime;
29		use nativelink_util::store_trait::{Store, StoreDriver, StoreKey, StoreLike, UploadSizeInfo};
30		use opentelemetry::context::Context;
31
32		#[derive(Debug, MetricsComponent)]
33		pub struct VerifyStore {
34		#[metric(group = "inner_store")]
35		inner_store: Store,
36		#[metric(help = "If the verification store is verifying the size of the data")]
37		verify_size: bool,
38		#[metric(help = "If the verification store is verifying the hash of the data")]
39		verify_hash: bool,
40
41		// Metrics.
42		#[metric(help = "Number of failures the verification store had due to size mismatches")]
43		size_verification_failures: CounterWithTime,
44		#[metric(help = "Number of failures the verification store had due to hash mismatches")]
45		hash_verification_failures: CounterWithTime,
46		}
47
48		impl VerifyStore {
49	10	pub fn new(spec: &VerifySpec, inner_store: Store) -> Arc<Self> {
50	10	Arc::new(Self {
51	10	inner_store,
52	10	verify_size: spec.verify_size,
53	10	verify_hash: spec.verify_hash,
54	10	size_verification_failures: CounterWithTime::default(),
55	10	hash_verification_failures: CounterWithTime::default(),
56	10	})
57	10	}
58
59	10	async fn inner_check_update<D: DigestHasher>(
60	10	&self,
61	10	mut tx: DropCloserWriteHalf,
62	10	mut rx: DropCloserReadHalf,
63	10	maybe_expected_digest_size: Option<u64>,
64	10	original_hash: &PackedHash,
65	10	mut maybe_hasher: Option<&mut D>,
66	10	) -> Result<(), Error> {
67	10	let mut sum_size: u64 = 0;
68		loop {
69	21	let chunk = rx
70	21	.recv()
71	21	.await
72	21	.err_tip(\|\| "Failed to read chunk in check_update in verify store") ?0 ;
73	21	sum_size += chunk.len() as u64;
74
75		// Ensure if a user sends us too much data we fail quickly.
76	21	if let Some( expected_size11 ) = maybe_expected_digest_size { Branch (76:20): [True: 11, False: 10] Branch (76:20): [Folded - Ignored]
77	11	match sum_size.cmp(&expected_size) {
78		core::cmp::Ordering::Greater => {
79	1	self.size_verification_failures.inc();
80	1	return Err(make_input_err!(
81	1	"Expected size {} but already received {} on insert",
82	1	expected_size,
83	1	sum_size
84	1	));
85		}
86		core::cmp::Ordering::Equal => {
87		// Ensure our next chunk is the EOF chunk.
88		// If this was an error it'll be caught on the .recv()
89		// on next cycle.
90	6	if let Ok(eof_chunk) = rx.peek().await { Branch (90:32): [True: 6, False: 0] Branch (90:32): [Folded - Ignored]
91	6	if !eof_chunk.is_empty() { Branch (91:32): [True: 0, False: 6] Branch (91:32): [Folded - Ignored]
92	0	self.size_verification_failures.inc();
93	0	return Err(make_input_err!(
94	0	"Expected EOF chunk when exact size was hit on insert in verify store - {}",
95	0	expected_size,
96	0	));
97	6	}
98	0	}
99		}
100	4	core::cmp::Ordering::Less => {}
101		}
102	10	}
103
104		// If is EOF.
105	20	if chunk.is_empty() { Branch (105:16): [True: 9, False: 11] Branch (105:16): [Folded - Ignored]
106	9	if let Some( expected_size4 ) = maybe_expected_digest_size { Branch (106:24): [True: 4, False: 5] Branch (106:24): [Folded - Ignored]
107	4	if sum_size != expected_size { Branch (107:24): [True: 1, False: 3] Branch (107:24): [Folded - Ignored]
108	1	self.size_verification_failures.inc();
109	1	return Err(make_input_err!(
110	1	"Expected size {} but got size {} on insert",
111	1	expected_size,
112	1	sum_size
113	1	));
114	3	}
115	5	}
116	8	if let Some( hasher5 ) = maybe_hasher.as_mut() { Branch (116:24): [True: 5, False: 3] Branch (116:24): [Folded - Ignored]
117	5	let digest = hasher.finalize_digest();
118	5	let hash_result = digest.packed_hash();
119	5	if original_hash != hash_result { Branch (119:24): [True: 2, False: 3] Branch (119:24): [Folded - Ignored]
120	2	self.hash_verification_failures.inc();
121	2	return Err(make_input_err!(
122	2	"Hashes do not match, got: {original_hash} but digest hash was {hash_result}",
123	2	));
124	3	}
125	3	}
126	6	tx.send_eof().err_tip(\|\| "In verify_store::check_update") ?0 ;
127	6	break;
128	11	}
129
130		// This will allows us to hash while sending data to another thread.
131	11	let write_future = tx.send(chunk.clone());
132
133	11	if let Some( hasher5 ) = maybe_hasher.as_mut() { Branch (133:20): [True: 5, False: 6] Branch (133:20): [Folded - Ignored]
134	5	hasher.update(chunk.as_ref());
135	6	}
136
137	11	write_future
138	11	.await
139	11	.err_tip(\|\| "Failed to write chunk to inner store in verify store") ?0 ;
140		}
141	6	Ok(())
142	10	}
143		}
144
145		#[async_trait]
146		impl StoreDriver for VerifyStore {
147		async fn has_with_results(
148		self: Pin<&Self>,
149		digests: &[StoreKey<'_>],
150		results: &mut [Option<u64>],
151	0	) -> Result<(), Error> {
152	0	self.inner_store.has_with_results(digests, results).await
153	0	}
154
155		async fn update(
156		self: Pin<&Self>,
157		key: StoreKey<'_>,
158		reader: DropCloserReadHalf,
159		size_info: UploadSizeInfo,
160	20	) -> Result<(), Error> {
161	10	let StoreKey::Digest(digest) = key else { Branch (161:13): [True: 10, False: 0] Branch (161:13): [Folded - Ignored]
162	0	return Err(make_input_err!(
163	0	"Only digests are supported in VerifyStore. Got {key:?}"
164	0	));
165		};
166	10	let digest_size = digest.size_bytes();
167	10	if let UploadSizeInfo::ExactSize(expected_size) = size_info { Branch (167:16): [True: 10, False: 0] Branch (167:16): [Folded - Ignored]
168	10	if self.verify_size && expected_size != digest_size5 { Branch (168:16): [True: 5, False: 5] Branch (168:36): [True: 0, False: 5] Branch (168:16): [Folded - Ignored] Branch (168:36): [Folded - Ignored]
169	0	self.size_verification_failures.inc();
170	0	return Err(make_input_err!(
171	0	"Expected size to match. Got {} but digest says {} on update",
172	0	expected_size,
173	0	digest_size
174	0	));
175	10	}
176	0	}
177
178	10	let mut hasher = if self.verify_hash { Branch (178:29): [True: 5, False: 5] Branch (178:29): [Folded - Ignored]
179		Some(
180	5	Context::current()
181	5	.get::<DigestHasherFunc>()
182	5	.map_or_else(default_digest_hasher_func, \|v\| *v)
183	5	.hasher(),
184		)
185		} else {
186	5	None
187		};
188
189	10	let maybe_digest_size = if self.verify_size { Branch (189:36): [True: 5, False: 5] Branch (189:36): [Folded - Ignored]
190	5	Some(digest_size)
191		} else {
192	5	None
193		};
194	10	let (tx, rx) = make_buf_channel_pair();
195
196	10	let update_fut = self.inner_store.update(digest, rx, size_info);
197	10	let check_fut = self.inner_check_update(
198	10	tx,
199	10	reader,
200	10	maybe_digest_size,
201	10	digest.packed_hash(),
202	10	hasher.as_mut(),
203	10	);
204
205	10	let (update_res, check_res) = tokio::join!(update_fut, check_fut);
206
207	10	update_res.merge(check_res)
208	20	}
209
210		async fn get_part(
211		self: Pin<&Self>,
212		key: StoreKey<'_>,
213		writer: &mut DropCloserWriteHalf,
214		offset: u64,
215		length: Option<u64>,
216	0	) -> Result<(), Error> {
217	0	self.inner_store.get_part(key, writer, offset, length).await
218	0	}
219
220	0	fn inner_store(&self, _digest: Option<StoreKey>) -> &'_ dyn StoreDriver {
221	0	self
222	0	}
223
224	0	fn as_any<'a>(&'a self) -> &'a (dyn core::any::Any + Sync + Send + 'static) {
225	0	self
226	0	}
227
228	0	fn as_any_arc(self: Arc<Self>) -> Arc<dyn core::any::Any + Sync + Send + 'static> {
229	0	self
230	0	}
231		}
232
233		default_health_status_indicator!(VerifyStore);