sparql_service/
service_config.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
use std::{io, path::Path};

use thiserror::Error;

use iri_s::IriS;
use serde_derive::{Deserialize, Serialize};

/// This struct can be used to define configuration of RDF data readers
#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
pub struct ServiceConfig {
    /// Default base to resolve relative IRIs, if it is `None` relative IRIs will be marked as errors`
    pub base: Option<IriS>,
}

impl ServiceConfig {
    pub fn new() -> ServiceConfig {
        Self {
            base: Some(IriS::new_unchecked("base://")),
        }
    }

    pub fn from_path<P: AsRef<Path>>(path: P) -> Result<ServiceConfig, ServiceConfigError> {
        let path_name = path.as_ref().display().to_string();
        let f = std::fs::File::open(path).map_err(|e| ServiceConfigError::ReadingConfigError {
            path_name: path_name.clone(),
            error: e,
        })?;

        let config: ServiceConfig =
            serde_yml::from_reader(f).map_err(|e| ServiceConfigError::YamlError {
                path_name: path_name.to_string(),
                error: e,
            })?;
        Ok(config)
    }
}

impl Default for ServiceConfig {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Error, Debug)]
pub enum ServiceConfigError {
    #[error("Reading path {path_name:?} error: {error:?}")]
    ReadingConfigError { path_name: String, error: io::Error },

    #[error("Reading YAML from {path_name:?}. Error: {error:?}")]
    YamlError {
        path_name: String,
        error: serde_yml::Error,
    },
}