reifydb_core/key/
namespace_source.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2026 ReifyDB
3
4use reifydb_codec::key::{
5	deserializer::KeyDeserializer,
6	encoded::{EncodedKey, EncodedKeyRange},
7	serializer::KeySerializer,
8};
9
10use super::{EncodableKey, KeyKind};
11use crate::interface::catalog::id::{NamespaceId, SourceId};
12
13#[derive(Debug, Clone, PartialEq)]
14pub struct NamespaceSourceKey {
15	pub namespace: NamespaceId,
16	pub source: SourceId,
17}
18
19impl EncodableKey for NamespaceSourceKey {
20	const KIND: KeyKind = KeyKind::NamespaceSource;
21
22	fn encode(&self) -> EncodedKey {
23		let mut serializer = KeySerializer::with_capacity(17);
24		serializer.extend_u8(Self::KIND as u8).extend_u64(self.namespace).extend_u64(self.source);
25		serializer.to_encoded_key()
26	}
27
28	fn decode(key: &EncodedKey) -> Option<Self> {
29		let mut de = KeyDeserializer::from_bytes(key.as_slice());
30
31		let kind: KeyKind = de.read_u8().ok()?.try_into().ok()?;
32		if kind != Self::KIND {
33			return None;
34		}
35
36		let namespace = de.read_u64().ok()?;
37		let source = de.read_u64().ok()?;
38
39		Some(Self {
40			namespace: NamespaceId(namespace),
41			source: SourceId(source),
42		})
43	}
44}
45
46impl NamespaceSourceKey {
47	pub fn encoded(namespace: impl Into<NamespaceId>, source: impl Into<SourceId>) -> EncodedKey {
48		Self {
49			namespace: namespace.into(),
50			source: source.into(),
51		}
52		.encode()
53	}
54
55	pub fn full_scan(namespace_id: NamespaceId) -> EncodedKeyRange {
56		EncodedKeyRange::start_end(Some(Self::link_start(namespace_id)), Some(Self::link_end(namespace_id)))
57	}
58
59	fn link_start(namespace_id: NamespaceId) -> EncodedKey {
60		let mut serializer = KeySerializer::with_capacity(9);
61		serializer.extend_u8(Self::KIND as u8).extend_u64(namespace_id);
62		serializer.to_encoded_key()
63	}
64
65	fn link_end(namespace_id: NamespaceId) -> EncodedKey {
66		let mut serializer = KeySerializer::with_capacity(9);
67		serializer.extend_u8(Self::KIND as u8).extend_u64(*namespace_id - 1);
68		serializer.to_encoded_key()
69	}
70}
71
72#[cfg(test)]
73pub mod tests {
74	use super::{EncodableKey, NamespaceSourceKey};
75	use crate::interface::catalog::id::{NamespaceId, SourceId};
76
77	#[test]
78	fn test_encode_decode() {
79		let key = NamespaceSourceKey {
80			namespace: NamespaceId(0xABCD),
81			source: SourceId(0x123456789ABCDEF0),
82		};
83		let encoded = key.encode();
84		let decoded = NamespaceSourceKey::decode(&encoded).unwrap();
85		assert_eq!(decoded.namespace, NamespaceId(0xABCD));
86		assert_eq!(decoded.source, SourceId(0x123456789ABCDEF0));
87		assert_eq!(key, decoded);
88	}
89
90	#[test]
91	fn test_order_preserving() {
92		let key1 = NamespaceSourceKey {
93			namespace: NamespaceId::SYSTEM,
94			source: SourceId(100),
95		};
96		let key2 = NamespaceSourceKey {
97			namespace: NamespaceId::SYSTEM,
98			source: SourceId(200),
99		};
100		let key3 = NamespaceSourceKey {
101			namespace: NamespaceId::DEFAULT,
102			source: SourceId(0),
103		};
104
105		let encoded1 = key1.encode();
106		let encoded2 = key2.encode();
107		let encoded3 = key3.encode();
108
109		assert!(encoded3 < encoded2, "ordering not preserved");
110		assert!(encoded2 < encoded1, "ordering not preserved");
111	}
112}
reifydb_core/key/namespace_source.rs

reifydb_core/key/
namespace_source.rs
