causal-hub 0.0.5

A library for causal models, inference and discovery.
Documentation 
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

use std::sync::LazyLock;

use dry::macro_for;
use jsonschema::{Retrieve, Uri};
use log::debug;
use serde_json::Value;

use crate::types::Map;

#[derive(Debug)]
pub(crate) struct InMemoryRetriever {
    schemas: Map<String, Value>,
}

impl Retrieve for &InMemoryRetriever {
    fn retrieve(
        &self,
        uri: &Uri<String>,
    ) -> Result<Value, Box<dyn std::error::Error + Send + Sync>> {
        self.schemas
            .get(uri.as_str())
            .cloned()
            .ok_or_else(|| format!("Schema not found: {uri}").into())
    }
}

pub(crate) static JSON_SCHEMA_RETRIEVER: LazyLock<InMemoryRetriever> = LazyLock::new(|| {
    // Log the loading of the JSON Schemas.
    debug!("Loading the JSON Schemas from assets.");
    // Allocate a map to hold the schemas.
    let mut schemas = Map::default();
    // Load all JSON Schemas.
    macro_for!(
        $schema in [
            catcpd, catbn,
            gausscpd, gaussbn,
            catcim, catctbn,
            digraph, ungraph
        ] {
        // Load the JSON Schema file.
        let schema = include_str!(concat!(stringify!($schema), ".schema.json"));
        // Parse the schema, or skip if it fails (should never happen for embedded assets).
        if let Ok(schema) = serde_json::from_str::<Value>(schema) {
            // Get the URI of the schema.
            let id = concat!("json-schema:///", stringify!($schema), ".schema.json");
            // Insert the schema into the map with its $id as the key.
            schemas.insert(id.to_owned(), schema);
        }
    });
    // Create the retriever.
    InMemoryRetriever { schemas }
});