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//! A module that enables file management for vaults
//!
//!
#![feature(non_modrs_mods)]
extern crate lockchain_core as lcc;
use lcc::traits::{Body, Vault};
use lcc::{MetaDomain, Payload, Record};
use std::collections::HashMap;
use std::fmt::Debug;
mod fs;
use fs::{FileType, Filesystem};
/// Represents a vault on disk
#[derive(Debug)]
pub struct DataVault<T: Body> {
records: HashMap<String, Record<T>>,
metadata: HashMap<String, MetaDomain>,
fs: Filesystem,
}
impl<T: Body> DataVault<T> {
/// Small utility function to setup file structure
fn initialize(self) -> Self {
self.fs.scaffold();
self
}
}
impl<T: Body> Vault<T> for DataVault<T> {
fn new(name: &str, location: &str) -> DataVault<T> {
Self {
records: HashMap::new(),
metadata: HashMap::new(),
fs: Filesystem::create(location, name),
}.initialize()
}
/// Caches all files from disk to memory
fn fetch(&mut self) {
self.records.clear();
self.metadata.clear();
self.fs
.fetch::<Record<T>>(FileType::Record)
.unwrap()
.into_iter()
.map(|rec| (rec.header.name.clone(), rec))
.for_each(|x| {
self.records.insert(x.0, x.1);
});
self.fs
.fetch::<MetaDomain>(FileType::Metadata)
.unwrap()
.into_iter()
.map(|rec| (rec.name().into(), rec))
.for_each(|x| {
self.metadata.insert(x.0, x.1);
});
}
/// Make sure a single record is loaded
fn pull(&mut self, name: &str) {
self.records.remove(name);
self.records.insert(
name.to_owned(),
self.fs.pull::<Record<T>>(FileType::Record, name).unwrap(),
);
}
fn sync(&mut self) {
self.fs
.sync::<Record<T>>(&self.records, FileType::Record)
.unwrap();
self.fs
.sync::<MetaDomain>(&self.metadata, FileType::Metadata)
.unwrap();
}
fn get_record(&self, name: &str) -> Option<&Record<T>> {
self.records.get(name)
}
fn contains(&self, name: &str) -> bool {
self.records.contains_key(name)
}
fn add_record(&mut self, key: &str, category: &str, tags: Vec<&str>) {
self.records
.insert(key.to_owned(), Record::new(key, category, tags));
}
fn delete_record(&mut self, record: &str) -> Option<Record<T>> {
self.records.remove(record)
}
fn add_data(&mut self, record: &str, key: &str, data: Payload) -> Option<()> {
self.records.get_mut(record)?.add_data(key, data)
}
fn get_data(&self, record: &str, key: &str) -> Option<&Payload> {
self.records.get(record)?.get_data(key)
}
fn meta_add_domain(&mut self, domain: &str) -> Option<()> {
if self.metadata.contains_key(domain) {
None
} else {
self.metadata.insert(domain.into(), MetaDomain::new(domain));
Some(())
}
}
fn meta_pull_domain(&mut self, domain: &str) -> Option<&MetaDomain> {
self.metadata.get(domain)
}
fn meta_set(&mut self, domain: &str, name: &str, data: Payload) -> Option<()> {
self.metadata.get_mut(domain)?.set_field(name, data)
}
fn meta_get(&mut self, domain: &str, name: &str) -> Option<Payload> {
Some(self.metadata.get(domain)?.get_field(name)?.clone())
}
}
|
