Newer
Older
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
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the
// Software without restriction, including without
// limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use rand::distributions::Alphanumeric;
use rand::Rng;
use crate::traits::IdProvider;
use jsonrpsee_types::SubscriptionId;
/// Generates random integers as subscription ID.
#[derive(Debug)]
pub struct RandomIntegerIdProvider;
impl IdProvider for RandomIntegerIdProvider {
fn next_id(&self) -> SubscriptionId<'static> {
const JS_NUM_MASK: u64 = !0 >> 11;
(rand::random::<u64>() & JS_NUM_MASK).into()
}
}
/// Generates random strings of length `len` as subscription ID.
#[derive(Debug)]
pub struct RandomStringIdProvider {
len: usize,
}
impl RandomStringIdProvider {
/// Create a new random string provider.
pub fn new(len: usize) -> Self {
Self { len }
}
}
impl IdProvider for RandomStringIdProvider {
fn next_id(&self) -> SubscriptionId<'static> {
let mut rng = rand::thread_rng();
(&mut rng).sample_iter(Alphanumeric).take(self.len).map(char::from).collect::<String>().into()
}
}
/// No-op implementation to be used for servers that don't support subscriptions.
#[derive(Debug)]
pub struct NoopIdProvider;
impl IdProvider for NoopIdProvider {
fn next_id(&self) -> SubscriptionId<'static> {
0.into()
}
}