feat: add https://github.com/tikv/async-speed-limit

__network/async-speed-limit/Cargo.lock

@@ -0,0 +1,155 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "async-speed-limit"
+version = "0.1.0"
+dependencies = [
+ "async-speed-limit 0.3.1",
+ "futures-util",
+]
+
+[[package]]
+name = "async-speed-limit"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c832f4cc51a4c7420c8e84ed9571e760f551531478fa1f72fcda2f768bd10271"
+dependencies = [
+ "futures-core",
+ "futures-io",
+ "futures-timer",
+ "pin-project-lite",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79e5145dde8da7d1b3892dad07a9c98fc04bc39892b1ecc9692cf53e2b780a65"
+
+[[package]]
+name = "futures-io"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28be053525281ad8259d47e4de5de657b25e7bac113458555bb4b70bc6870500"
+
+[[package]]
+name = "futures-macro"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c287d25add322d9f9abdcdc5927ca398917996600182178774032e9f8258fedd"
+dependencies = [
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "futures-task"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13de07eb8ea81ae445aca7b69f5f7bf15d7bf4912d8ca37d6645c77ae8a58d86"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "futures-timer"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e64b03909df88034c26dc1547e8970b91f98bdb65165d6a4e9110d94263dbb2c"
+
+[[package]]
+name = "futures-util"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "632a8cd0f2a4b3fdea1657f08bde063848c3bd00f9bbf6e256b8be78802e624b"
+dependencies = [
+ "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-task",
+ "memchr",
+ "pin-project-lite",
+ "pin-utils",
+ "proc-macro-hack",
+ "proc-macro-nested",
+ "slab",
+]
+
+[[package]]
+name = "memchr"
+version = "2.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+
+[[package]]
+name = "once_cell"
+version = "1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439697af366c49a6d0a010c56a0d97685bc140ce0d377b13a2ea2aa42d64a827"
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
+
+[[package]]
+name = "proc-macro-nested"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "slab"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+
+[[package]]
+name = "syn"
+version = "1.0.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c700597eca8a5a762beb35753ef6b94df201c81cca676604f547495a0d7f0081"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"

__network/async-speed-limit/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "async-speed-limit"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+async-speed-limit = "0.3.1"
+futures-util = { version = "0.3.12", features= ["io"] }
+

__network/async-speed-limit/README.md

@@ -0,0 +1,5 @@
+
+From:
+https://github.com/tikv/async-speed-limit
+
+

__network/async-speed-limit/src/main.rs

@@ -0,0 +1,30 @@
+use async_speed_limit::Limiter;
+use futures_util::{
+    future::try_join,
+    io::{self, AsyncRead, AsyncWrite},
+};
+use std::marker::Unpin;
+
+fn main() {
+    println!("Hello, world!");
+}
+
+#[warn(dead_code)]
+async fn copy_both_slowly(
+    r1: impl AsyncRead,
+    w1: &mut (impl AsyncWrite + Unpin),
+    r2: impl AsyncRead,
+    w2: &mut (impl AsyncWrite + Unpin),
+) -> io::Result<()> {
+    // create a speed limiter of 1.0 KiB/s.
+    let limiter = <Limiter>::new(1024.0);
+
+    // limit both readers by the same queue
+    // (so 1.0 KiB/s is the combined maximum speed)
+    let r1 = limiter.clone().limit(r1);
+    let r2 = limiter.limit(r2);
+
+    // do the copy.
+    try_join(io::copy(r1, w1), io::copy(r2, w2)).await?;
+    Ok(())
+}