100-exercises-to-learn-rust/exercises/07_threads/12_rw_lock/src/store.rs

42 lines
1.1 KiB
Rust

use crate::data::{Status, Ticket, TicketDraft};
use std::collections::BTreeMap;
use std::sync::{Arc, Mutex};
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct TicketId(u64);
#[derive(Clone)]
pub struct TicketStore {
tickets: BTreeMap<TicketId, Arc<Mutex<Ticket>>>,
counter: u64,
}
impl TicketStore {
pub fn new() -> Self {
Self {
tickets: BTreeMap::new(),
counter: 0,
}
}
pub fn add_ticket(&mut self, ticket: TicketDraft) -> TicketId {
let id = TicketId(self.counter);
self.counter += 1;
let ticket = Ticket {
id,
title: ticket.title,
description: ticket.description,
status: Status::ToDo,
};
let ticket = Arc::new(Mutex::new(ticket));
self.tickets.insert(id, ticket);
id
}
// The `get` method should return a handle to the ticket
// which allows the caller to either read or modify the ticket.
pub fn get(&self, id: TicketId) -> Option<Arc<Mutex<Ticket>>> {
self.tickets.get(&id).cloned()
}
}