libmeld/
map.rs

1use log::info;
2use sha2::{Digest, Sha512};
3use walkdir::WalkDir;
4
5use crate::hash_path;
6use crate::mapper;
7use crate::Config;
8use crate::Error;
9use crate::Map;
10
11impl Map {
12    // Getters
13    pub fn get_blob(&self) -> &String {
14        &self.blob
15    }
16
17    /// Add vec of configs to the map
18    fn build_configs(
19        path: &str,
20        subset: String,
21        family: String,
22        tag: &String,
23    ) -> Result<Vec<Config>, Error> {
24        let mut configs: Vec<Config> = Vec::new();
25
26        for entity in WalkDir::new(path) {
27            match entity {
28                Ok(e) => {
29                    let map_path =
30                        mapper::real_path_to_map(&e.path().to_str().unwrap().to_string())?;
31                    configs.push(Config::from(
32                        e.path().to_str().unwrap().to_string(),
33                        map_path,
34                        subset.clone(),
35                        family.clone(),
36                        tag.clone(),
37                    )?);
38                }
39                Err(_) => (),
40            }
41        }
42        return Ok(configs);
43    }
44
45    /// Calculate the hash of all blobs in the vec
46    /// This will be compared to the stored hash to find if map update needed
47    fn get_map_hash(configs: &Vec<Config>) -> String {
48        let mut hasher = Sha512::new();
49        for c in configs {
50            hasher.update(c.get_hash());
51        }
52        format!("{:x}", hasher.finalize())
53    }
54
55    /// Create a Map from a path and arguments
56    pub fn new(path: &String, subset: String, family: String, tag: String) -> Result<Self, Error> {
57        info!("Building map for {}", path);
58
59        let clean_path = path_clean::clean(path);
60
61        // generate variables for the new map
62        let map_blob = hash_path(&clean_path);
63        let config_vec = Map::build_configs(&clean_path, subset, family, &tag)?;
64        let map_hash = Map::get_map_hash(&config_vec);
65
66        return Ok(Map {
67            blob: map_blob,
68            ver: 0,
69            hash: map_hash,
70            tag: tag,
71            configs: config_vec,
72        });
73    }
74}
libmeld/map.rs

libmeld/
map.rs
