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
use super::{Error, Result};
use tikv_util::codec;
use tikv_util::codec::number::{self, NumberEncoder};
#[allow(dead_code)]
pub fn check_key_in_range(
key: &[u8],
region_id: u64,
start_key: &[u8],
end_key: &[u8],
) -> Result<()> {
if key >= start_key && (end_key.is_empty() || key < end_key) {
Ok(())
} else {
Err(Error::NotInRange {
key: key.to_vec(),
region_id,
start: start_key.to_vec(),
end: end_key.to_vec(),
})
}
}
pub fn append_expire_ts(value: &mut Vec<u8>, expire_ts: u64) {
value.encode_u64(expire_ts).unwrap();
}
pub fn get_expire_ts(value_with_ttl: &[u8]) -> Result<u64> {
let len = value_with_ttl.len();
if len < number::U64_SIZE {
return Err(Error::Codec(codec::Error::ValueLength));
}
let mut ts = &value_with_ttl[len - number::U64_SIZE..];
Ok(number::decode_u64(&mut ts)?)
}
pub fn strip_expire_ts(value_with_ttl: &[u8]) -> &[u8] {
let len = value_with_ttl.len();
&value_with_ttl[..len - number::U64_SIZE]
}
pub fn truncate_expire_ts(value_with_ttl: &mut Vec<u8>) -> Result<()> {
let len = value_with_ttl.len();
if len < number::U64_SIZE {
return Err(Error::Codec(codec::Error::ValueLength));
}
value_with_ttl.truncate(len - number::U64_SIZE);
Ok(())
}