mutant-lib 0.6.2

Core library for MutAnt distributed mutable key value storage over Autonomi network
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

use crate::error::Error;
use crate::index::error::IndexError;
use crate::index::pad_info::PadInfo;

use super::{IndexEntry, MasterIndex};

impl MasterIndex {
    /// Extracts the index pad from a public key, if it exists
    ///
    /// This is used when updating a public key to preserve the public index pad
    pub fn extract_public_index_pad(&self, key_name: &str) -> Option<PadInfo> {
        if let Some(entry) = self.index.get(key_name) {
            if let IndexEntry::PublicUpload(index_pad, _) = entry {
                return Some(index_pad.clone());
            }
        }
        None
    }

    pub fn populate_index_pad(&mut self, key_name: &str) -> Result<(PadInfo, Vec<u8>), Error> {
        let res = match self.index.get_mut(key_name) {
            Some(IndexEntry::PublicUpload(index_pad, pads)) => {
                let index_data = serde_cbor::to_vec(&pads).unwrap();

                index_pad.size = index_data.len();
                index_pad.checksum = PadInfo::checksum(&index_data);

                Ok((index_pad.clone(), index_data))
            }
            _ => Err(IndexError::KeyNotFound(key_name.to_string()).into()),
        };

        self.save(self.network_choice)?;

        res
    }
}