idem_handler_config/
config.rs

1use std::fs::File;
2use serde::de::DeserializeOwned;
3use std::path::MAIN_SEPARATOR_STR;
4
5#[derive(Default)]
6pub struct Config<C> {
7    config: C,
8}
9
10impl<C> Config<C>
11where
12    C: Default + DeserializeOwned
13{
14    pub fn new(provider: impl ConfigProvider<C>) -> Result<Self, ()> {
15        match provider.load() {
16            Ok(config) => Ok(Self{config}),
17            Err(_) => Err(())
18        }
19    }
20
21    pub fn get(&self) -> &C {
22        &self.config
23    }
24
25    pub fn get_mut(&mut self) -> &mut C {
26        &mut self.config
27    }
28}
29
30pub trait ConfigProvider<C>
31where
32    C: Default + DeserializeOwned
33{
34    fn load(&self) -> Result<C, ()>;
35}
36
37pub struct DefaultConfigProvider;
38
39impl<C> ConfigProvider<C> for DefaultConfigProvider
40where
41    C: Default + DeserializeOwned
42{
43    fn load(&self) -> Result<C, ()> {
44        Ok(C::default())
45    }
46}
47
48pub struct FileConfigProvider {
49    pub base_path: String,
50    pub config_name: String
51}
52
53impl<C> ConfigProvider<C> for FileConfigProvider
54where
55    C: Default + DeserializeOwned
56{
57    fn load(&self) -> Result<C, ()> {
58        let file = match File::open(format!("{}{}{}", self.base_path, MAIN_SEPARATOR_STR, self.config_name)) {
59            Ok(file) => file,
60            Err(_) => return Err(()),
61        };
62        match serde_json::from_reader(file) {
63            Ok(config) => Ok(config),
64            Err(_) => Err(())
65        }
66    }
67}
68
69pub enum ProviderType {
70    File,
71    Default
72}
idem_handler_config/config.rs

idem_handler_config/
config.rs
