hypercore 0.16.0

Secure, distributed, append-only log
Documentation 
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139

use std::time::{Duration, Instant};

#[cfg(feature = "async-std")]
use criterion::async_executor::AsyncStdExecutor;
use criterion::{Criterion, black_box, criterion_group, criterion_main};
use hypercore::{Hypercore, HypercoreBuilder, HypercoreError, Storage};
use tempfile::Builder as TempfileBuilder;

fn bench_create_disk(c: &mut Criterion) {
    let mut group = c.benchmark_group("slow_call");
    group.measurement_time(Duration::from_secs(20));

    #[cfg(feature = "async-std")]
    group.bench_function("create_disk", move |b| {
        b.to_async(AsyncStdExecutor)
            .iter(|| create_hypercore("create"));
    });
    #[cfg(feature = "tokio")]
    group.bench_function("create_disk", move |b| {
        let rt = tokio::runtime::Runtime::new().unwrap();
        b.to_async(&rt).iter(|| create_hypercore("create"));
    });
}

#[cfg(feature = "cache")]
async fn create_hypercore(name: &str) -> Result<Hypercore, HypercoreError> {
    let dir = TempfileBuilder::new()
        .prefix(name)
        .tempdir()
        .unwrap()
        .keep();
    let storage = Storage::new_disk(&dir, true).await?;
    HypercoreBuilder::new(storage)
        .node_cache_options(hypercore::CacheOptionsBuilder::new())
        .build()
        .await
}

#[cfg(not(feature = "cache"))]
async fn create_hypercore(name: &str) -> Result<Hypercore, HypercoreError> {
    let dir = TempfileBuilder::new()
        .prefix(name)
        .tempdir()
        .unwrap()
        .keep();
    let storage = Storage::new_disk(&dir, true).await?;
    HypercoreBuilder::new(storage).build().await
}

fn bench_write_disk(c: &mut Criterion) {
    let mut group = c.benchmark_group("slow_call");
    group.measurement_time(Duration::from_secs(20));

    #[cfg(feature = "async-std")]
    group.bench_function("write disk", |b| {
        b.to_async(AsyncStdExecutor).iter_custom(write_disk);
    });
    #[cfg(feature = "tokio")]
    group.bench_function("write disk", |b| {
        let rt = tokio::runtime::Runtime::new().unwrap();
        b.to_async(&rt).iter_custom(write_disk);
    });
}

async fn write_disk(iters: u64) -> Duration {
    let mut hypercore = create_hypercore("write").await.unwrap();
    let data = Vec::from("hello");
    let start = Instant::now();
    for _ in 0..iters {
        black_box(hypercore.append(&data).await.unwrap());
    }
    start.elapsed()
}

fn bench_read_disk(c: &mut Criterion) {
    let mut group = c.benchmark_group("slow_call");
    group.measurement_time(Duration::from_secs(20));

    #[cfg(feature = "async-std")]
    group.bench_function("read disk", |b| {
        b.to_async(AsyncStdExecutor).iter_custom(read_disk);
    });
    #[cfg(feature = "tokio")]
    group.bench_function("read disk", |b| {
        let rt = tokio::runtime::Runtime::new().unwrap();
        b.to_async(&rt).iter_custom(read_disk);
    });
}

async fn read_disk(iters: u64) -> Duration {
    let mut hypercore = create_hypercore("read").await.unwrap();
    let data = Vec::from("hello");
    for _ in 0..iters {
        hypercore.append(&data).await.unwrap();
    }
    let start = Instant::now();
    for i in 0..iters {
        black_box(hypercore.get(i).await.unwrap());
    }
    start.elapsed()
}

fn bench_clear_disk(c: &mut Criterion) {
    let mut group = c.benchmark_group("slow_call");
    group.measurement_time(Duration::from_secs(20));

    #[cfg(feature = "async-std")]
    group.bench_function("clear disk", |b| {
        b.to_async(AsyncStdExecutor).iter_custom(clear_disk);
    });
    #[cfg(feature = "tokio")]
    group.bench_function("clear disk", |b| {
        let rt = tokio::runtime::Runtime::new().unwrap();
        b.to_async(&rt).iter_custom(clear_disk);
    });
}

#[allow(clippy::unit_arg)]
async fn clear_disk(iters: u64) -> Duration {
    let mut hypercore = create_hypercore("clear").await.unwrap();
    let data = Vec::from("hello");
    for _ in 0..iters {
        hypercore.append(&data).await.unwrap();
    }
    let start = Instant::now();
    for i in 0..iters {
        black_box(hypercore.clear(i, 1).await.unwrap());
    }
    start.elapsed()
}

criterion_group!(
    benches,
    bench_create_disk,
    bench_write_disk,
    bench_read_disk,
    bench_clear_disk
);
criterion_main!(benches);