sparql_service/
service_config.rs

1use std::io::Read;
2use std::{io, path::Path};
3
4use thiserror::Error;
5
6use iri_s::IriS;
7use serde::{Deserialize, Serialize};
8
9/// This struct can be used to define configuration of RDF data readers
10#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
11pub struct ServiceConfig {
12    /// Default base to resolve relative IRIs, if it is `None` relative IRIs will be marked as errors`
13    pub base: Option<IriS>,
14}
15
16impl ServiceConfig {
17    pub fn new() -> ServiceConfig {
18        Self {
19            base: Some(IriS::new_unchecked("base://")),
20        }
21    }
22
23    pub fn from_path<P: AsRef<Path>>(path: P) -> Result<ServiceConfig, ServiceConfigError> {
24        let path_name = path.as_ref().display().to_string();
25        let mut f =
26            std::fs::File::open(path).map_err(|e| ServiceConfigError::ReadingConfigError {
27                path_name: path_name.clone(),
28                error: e,
29            })?;
30        let mut s = String::new();
31        f.read_to_string(&mut s)
32            .map_err(|e| ServiceConfigError::ReadingConfigError {
33                path_name: path_name.clone(),
34                error: e,
35            })?;
36
37        let config: ServiceConfig =
38            toml::from_str(s.as_str()).map_err(|e| ServiceConfigError::TomlError {
39                path_name: path_name.to_string(),
40                error: e,
41            })?;
42        Ok(config)
43    }
44}
45
46impl Default for ServiceConfig {
47    fn default() -> Self {
48        Self::new()
49    }
50}
51
52#[derive(Error, Debug)]
53pub enum ServiceConfigError {
54    #[error("Reading path {path_name:?} error: {error:?}")]
55    ReadingConfigError { path_name: String, error: io::Error },
56
57    #[error("Reading TOML from {path_name:?}. Error: {error:?}")]
58    TomlError {
59        path_name: String,
60        error: toml::de::Error,
61    },
62}
sparql_service/service_config.rs

sparql_service/
service_config.rs
