jsonrpsee_core/
id_providers.rs

1// Copyright 2019-2021 Parity Technologies (UK) Ltd.
2//
3// Permission is hereby granted, free of charge, to any
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15// of the Software.
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26
27//! Subscription ID providers.
28
29use rand::{distr::Alphanumeric, Rng};
30
31use crate::traits::IdProvider;
32use jsonrpsee_types::SubscriptionId;
33
34/// Generates random integers as subscription ID.
35#[derive(Debug, Copy, Clone)]
36pub struct RandomIntegerIdProvider;
37
38impl IdProvider for RandomIntegerIdProvider {
39    fn next_id(&self) -> SubscriptionId<'static> {
40        const JS_NUM_MASK: u64 = !0 >> 11;
41        (rand::random::<u64>() & JS_NUM_MASK).into()
42    }
43}
44
45/// Generates random strings of length `len` as subscription ID.
46#[derive(Debug, Copy, Clone)]
47pub struct RandomStringIdProvider {
48    len: usize,
49}
50
51impl RandomStringIdProvider {
52    /// Create a new random string provider.
53    pub fn new(len: usize) -> Self {
54        Self { len }
55    }
56}
57
58impl IdProvider for RandomStringIdProvider {
59    fn next_id(&self) -> SubscriptionId<'static> {
60        let mut rng = rand::rng();
61        (&mut rng)
62            .sample_iter(Alphanumeric)
63            .take(self.len)
64            .map(char::from)
65            .collect::<String>()
66            .into()
67    }
68}
jsonrpsee_core/id_providers.rs

jsonrpsee_core/
id_providers.rs
