Created
December 20, 2020 22:30
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use std::sync::{Arc, RwLock}; | |
use actix_web::{get, post, web, App, Error, HttpServer}; | |
use rkv::backend::{SafeMode, SafeModeDatabase, SafeModeEnvironment}; | |
use rkv::{Manager, Rkv, SingleStore, StoreOptions, Value}; | |
use serde::{Deserialize, Serialize}; | |
#[derive(Debug, Serialize, Deserialize)] | |
struct SomeData { | |
number: u32, | |
string: String, | |
} | |
struct RkvStore { | |
manager: Arc<RwLock<Rkv<SafeModeEnvironment>>>, | |
store: SingleStore<SafeModeDatabase>, | |
} | |
impl RkvStore { | |
fn new() -> Self { | |
let path = std::env::current_dir().unwrap(); | |
let mut manager = Manager::<SafeModeEnvironment>::singleton().write().unwrap(); | |
let created_arc = manager | |
.get_or_create(path.as_ref(), Rkv::new::<SafeMode>) | |
.unwrap(); | |
let store = { | |
let env = created_arc.read().unwrap(); | |
env.open_single("mydb", StoreOptions::create()).unwrap() | |
}; | |
RkvStore { | |
manager: created_arc, | |
store, | |
} | |
} | |
} | |
#[post("/{key}")] | |
async fn save_value( | |
params: web::Path<(String,)>, | |
data: web::Json<SomeData>, | |
rkv: web::Data<RkvStore>, | |
) -> Result<String, Error> { | |
let (key,) = params.into_inner(); | |
let env = rkv.manager.read()?; | |
let mut writer = env.write().unwrap(); | |
let encoded = bincode::serialize(&data.into_inner()).unwrap(); | |
rkv.store | |
.put(&mut writer, &key, &Value::Blob(&encoded)) | |
.unwrap(); | |
writer.commit().unwrap(); | |
Ok("value saved".to_owned()) | |
} | |
#[get("/{key}")] | |
async fn load_value(params: web::Path<(String,)>, rkv: web::Data<RkvStore>) -> String { | |
let (key,) = params.into_inner(); | |
let env = rkv.manager.read().unwrap(); | |
let reader = env.read().unwrap(); | |
match rkv.store.get(&reader, &key).unwrap() { | |
Some(Value::Blob(encoded)) => { | |
let data: SomeData = bincode::deserialize(encoded).unwrap(); | |
format!("found {:?}!", data) | |
} | |
Some(_) => panic!(), | |
None => "no value found".to_owned(), | |
} | |
} | |
#[actix_web::main] | |
async fn main() -> std::io::Result<()> { | |
HttpServer::new(|| { | |
App::new() | |
.data(RkvStore::new()) | |
.service(save_value) | |
.service(load_value) | |
}) | |
.bind("127.0.0.1:8080")? | |
.run() | |
.await | |
} |
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