reifydb_core/key/
policy_op.rs1use reifydb_codec::key::{
5 deserializer::KeyDeserializer,
6 encoded::{EncodedKey, EncodedKeyRange},
7 serializer::KeySerializer,
8};
9
10use super::{EncodableKey, KeyKind};
11use crate::interface::catalog::policy::PolicyId;
12
13#[derive(Debug, Clone, PartialEq)]
14pub struct PolicyOpKey {
15 pub policy: PolicyId,
16 pub op_index: u64,
17}
18
19impl PolicyOpKey {
20 pub fn new(policy: PolicyId, op_index: u64) -> Self {
21 Self {
22 policy,
23 op_index,
24 }
25 }
26
27 pub fn encoded(policy: PolicyId, op_index: u64) -> EncodedKey {
28 Self::new(policy, op_index).encode()
29 }
30
31 pub fn full_scan() -> EncodedKeyRange {
32 let mut start = KeySerializer::with_capacity(1);
33 start.extend_u8(Self::KIND as u8);
34 let mut end = KeySerializer::with_capacity(1);
35 end.extend_u8(Self::KIND as u8 - 1);
36 EncodedKeyRange::start_end(Some(start.to_encoded_key()), Some(end.to_encoded_key()))
37 }
38
39 pub fn policy_scan(policy: PolicyId) -> EncodedKeyRange {
40 let mut start = KeySerializer::with_capacity(9);
41 start.extend_u8(Self::KIND as u8).extend_u64(policy);
42 let mut end = KeySerializer::with_capacity(17);
43 end.extend_u8(Self::KIND as u8).extend_u64(policy);
44 let start_key = start.to_encoded_key();
45 let mut end_bytes = end.to_encoded_key().to_vec();
46
47 end_bytes.extend_from_slice(&[0xFF; 8]);
48 EncodedKeyRange::start_end(Some(start_key), Some(EncodedKey::new(end_bytes)))
49 }
50}
51
52impl EncodableKey for PolicyOpKey {
53 const KIND: KeyKind = KeyKind::PolicyOp;
54
55 fn encode(&self) -> EncodedKey {
56 let mut serializer = KeySerializer::with_capacity(17);
57 serializer.extend_u8(Self::KIND as u8).extend_u64(self.policy).extend_u64(self.op_index);
58 serializer.to_encoded_key()
59 }
60
61 fn decode(key: &EncodedKey) -> Option<Self> {
62 let mut de = KeyDeserializer::from_bytes(key.as_slice());
63 let kind: KeyKind = de.read_u8().ok()?.try_into().ok()?;
64 if kind != Self::KIND {
65 return None;
66 }
67 let policy = de.read_u64().ok()?;
68 let op_index = de.read_u64().ok()?;
69 Some(Self {
70 policy,
71 op_index,
72 })
73 }
74}