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Rust与Locust集成实例

Rust与Locust的集成通常涉及使用Rust编写高性能的负载测试逻辑，并通过Locust框架进行分布式测试和结果分析，实际应用场景的示例。

基础HTTP请求测试

使用Rust编写HTTP请求逻辑，通过Locust模拟高并发场景：

use reqwest::blocking::Client;pub fn make_http_request(url: &str) -> Result<(), reqwest::Error> {let client = Client::new();let response = client.get(url).send()?;println!("Status: {}", response.status());Ok(())
}

Locust任务文件中调用Rust函数：

from locust import HttpUser, task
import subprocessclass RustHttpUser(HttpUser):@taskdef call_rust_request(self):subprocess.run(["./target/release/rust_http", "http://example.com"])

高性能计算任务

Rust实现计算密集型任务，Locust协调测试：

pub fn calculate_primes(n: usize) -> Vec<usize> {let mut primes = vec![true; n+1];primes[0] = false;primes[1] = false;for i in 2..=n {if primes[i] {for j in (i*i..=n).step_by(i) {primes[j] = false}}}primes.iter().enumerate().filter_map(|(i, &is_prime)| if is_prime { Some(i) } else { None }).collect()
}

数据库压力测试

Rust处理数据库操作，Locust模拟用户行为：

use sqlx::postgres::PgPool;pub async fn db_query(pool: &PgPool) -> Result<(), sqlx::Error> {let row: (i64,) = sqlx::query_as("SELECT $1").bind(150_i64).fetch_one(pool).await?;println!("Result: {}", row.0);Ok(())
}

WebSocket连接测试

Rust实现WebSocket客户端，Locust控制测试流程：

use tokio_tungstenite::connect_async;
use url::Url;pub async fn ws_connect(uri: &str) -> Result<(), Box<dyn std::error::Error>> {let (ws_stream, _) = connect_async(Url::parse(uri)?).await?;let (_, mut receiver) = ws_stream.split();while let Some(msg) = receiver.next().await {println!("Received: {:?}", msg?);}Ok(())
}

文件IO压力测试

Rust处理文件操作，Locust模拟多用户场景：

use std::fs::File;
use std::io::Write;pub fn file_io_test(filename: &str) -> std::io::Result<()> {let mut file = File::create(filename)?;for i in 0..1000 {writeln!(file, "Line {}", i)?;}Ok(())
}

gRPC服务测试

Rust实现gRPC客户端，Locust进行负载测试：

use tonic::Request;pub async fn grpc_call(client: &mut greeter_client::GreeterClient<tonic::transport::Channel>,name: &str
) -> Result<(), tonic::Status> {let request = Request::new(greeter::HelloRequest {name: name.to_string(),});let response = client.say_hello(request).await?;println!("RESPONSE={:?}", response);Ok(())
}

消息队列测试

Rust连接RabbitMQ/Kafka，Locust控制消息发送频率：

use lapin::{Connection, ConnectionProperties};pub async fn mq_test(amqp_url: &str) -> Result<(), Box<dyn std::error::Error>> {let conn = Connection::connect(amqp_url, ConnectionProperties::default()).await?;let channel = conn.create_channel().await?;channel.queue_declare("hello", Default::default(), Default::default()).await?;Ok(())
}

加密解密性能测试

Rust实现加密算法，Locust测量不同负载下的性能：

use aes::Aes256;
use block_modes::{BlockMode, Cbc};
use block_modes::block_padding::Pkcs7;type Aes256Cbc = Cbc<Aes256, Pkcs7>;pub fn encrypt_data(key: &[u8], iv: &[u8], data: &[u8]) -> Vec<u8> {let cipher = Aes256Cbc::new_from_slices(key, iv).unwrap();cipher.encrypt_vec(data)
}

图像处理测试

Rust执行图像处理，Locust模拟多用户上传：

use image::{DynamicImage, ImageBuffer};pub fn process_image(img: DynamicImage) -> ImageBuffer<image::Rgba<u8>, Vec<u8>> {img.blur(5.0).adjust_contrast(30.0).brighten(10).to_rgba8()
}

机器学习推理测试

Rust加载模型进行推理，Locust模拟API请求：

use tract_onnx::prelude::*;pub async fn model_inference(model_path: &str, input: Tensor) -> Result<Tensor, tract_onnx::tract_core::anyhow::Error> {let model = tract_onnx::onnx().model_for_path(model_path)?.into_optimized()?.into_runnable()?;model.run(tvec!(input))
}

自定义协议测试

Rust实现专有协议客户端，Locust进行协议测试：

pub struct CustomProtocol {version: u8,payload: Vec<u8>,
}impl CustomProtocol {pub fn serialize(&self) -> Vec<u8> {let mut buf = Vec::new();buf.push(self.version);buf.extend_from_slice(&(self.payload.len() as u32).to_be_bytes());buf.extend_from_slice(&self.payload);buf}
}

缓存性能测试

Rust操作Redis缓存，Locust模拟缓存访问模式：

use redis::Commands;pub fn cache_ops(conn: &mut redis::Connection, key: &str, value: &str) -> redis::RedisResult<()> {conn.set(key, value)?;let _: String = conn.get(key)?;conn.expire(key, 60)?;Ok(())
}

地理位置计算测试

Rust处理地理空间计算，Locust模拟位置服务请求：

use geo::algorithm::haversine_distance::HaversineDistance;pub fn calculate_distance(lat1: f64, lon1: f64, lat2: f64, lon2: f64) -> f64 {let point1 = geo::Point::new(lon1, lat1);let point2 = geo::Point::new(lon2, lat2);point1.haversine_distance(&point2)
}

正则表达式性能测试

Rust执行复杂正则匹配，Locust提供不同测试用例：

use regex::Regex;pub fn regex_match(text: &str, pattern: &str) -> bool {let re = Regex::new(pattern).unwrap();re.is_match(text)
}

时间序列数据处理

Rust处理时序数据，Locust模拟数据采集场景：

use chrono::{DateTime, Utc};pub struct TimeSeriesPoint {timestamp: DateTime<Utc>,value: f64,
}pub fn process_timeseries(data: Vec<TimeSeriesPoint>) -> Vec<f64> {data.windows(2).map(|w| (w[1].value - w[0].value) / (w[1].timestamp - w[0].timestamp).num_seconds() as f64).collect()
}

压缩算法测试

Rust实现压缩解压，Locust测试不同数据规模：

use flate2::write::GzEncoder;
use flate2::Compression;pub fn compress_data(data: &[u8]) -> Vec<u8> {let mut encoder = GzEncoder::new(Vec::new(), Compression::default());encoder.write_all(data).unwrap();encoder.finish().unwrap()
}

并发数据结构测试

Rust测试并发数据结构性能，Locust协调测试流程：

use std::sync::Arc;
use dashmap::DashMap;pub fn concurrent_map_test(map: Arc<DashMap<String, String>>, key: String, value: String) {map.insert(key, value);
}

网络协议模糊测试

Rust生成测试用例，Locust执行模糊测试：

use rand::Rng;pub fn generate_fuzz_input() -> Vec<u8> {let mut rng = rand::thread_rng();let len = rng.gen_range(1..1024);(0..len).map(|_| rng.gen()).collect()
}

区块链相关测试

Rust处理区块链交易，Locust模拟网络负载：

use secp256k1::{Secp256k1, Message};
use secp256k1::hashes::sha256;pub fn sign_transaction(privkey: &[u8], message: &[u8]) -> [u8; 64] {