380 lines
11 KiB
Rust
380 lines
11 KiB
Rust
use std::convert::TryFrom;
|
|
|
|
use anyhow::{anyhow, Result};
|
|
use diesel::sqlite::Sqlite;
|
|
use diesel::Connection;
|
|
use log::trace;
|
|
use serde_json::Value;
|
|
use uuid::Uuid;
|
|
|
|
use crate::addressing::Address;
|
|
use crate::database::constants::{
|
|
HIER_ADDR, HIER_HAS_ATTR, HIER_INVARIANT, IS_OF_TYPE_ATTR, LABEL_ATTR, TYPE_ADDR, TYPE_HAS_ATTR,
|
|
};
|
|
use crate::database::entry::{Entry, EntryValue};
|
|
use crate::database::lang::{EntryQuery, Query, QueryComponent, QueryPart};
|
|
use crate::database::{bulk_retrieve_objects, insert_entry, query, DbPool};
|
|
|
|
#[derive(Debug, Clone, PartialEq)]
|
|
pub struct UNode(String);
|
|
|
|
impl UNode {
|
|
pub fn new<T: Into<String>>(s: T) -> Result<Self> {
|
|
let s = s.into();
|
|
|
|
if s.is_empty() {
|
|
return Err(anyhow!("UNode can not be empty."));
|
|
}
|
|
|
|
Ok(Self(s))
|
|
}
|
|
|
|
pub fn as_ref(&self) -> &String {
|
|
&self.0
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone, PartialEq)]
|
|
pub struct UPath(pub Vec<UNode>);
|
|
|
|
impl std::str::FromStr for UPath {
|
|
type Err = anyhow::Error;
|
|
|
|
fn from_str(string: &str) -> Result<Self, Self::Err> {
|
|
if string.is_empty() {
|
|
Ok(UPath(vec![]))
|
|
} else {
|
|
let result: Result<Vec<UNode>> = string
|
|
.trim_end_matches('/')
|
|
.split('/')
|
|
.map(|part| UNode::new(String::from(part)))
|
|
.collect();
|
|
|
|
Ok(UPath(result?))
|
|
}
|
|
}
|
|
}
|
|
|
|
impl std::fmt::Display for UNode {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
write!(f, "{}", self.0)
|
|
}
|
|
}
|
|
|
|
impl std::fmt::Display for UPath {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
write!(
|
|
f,
|
|
"{}",
|
|
self.0
|
|
.iter()
|
|
.map(|node| node.to_string())
|
|
.collect::<Vec<String>>()
|
|
.join("/")
|
|
)
|
|
}
|
|
}
|
|
|
|
trait EntryList {
|
|
fn extract_addresses(&self) -> Vec<Address>;
|
|
}
|
|
|
|
impl EntryList for Vec<Entry> {
|
|
fn extract_addresses(&self) -> Vec<Address> {
|
|
self.iter()
|
|
.filter_map(|e| {
|
|
if let EntryValue::Address(address) = &e.value {
|
|
Some(address.clone())
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
.collect()
|
|
}
|
|
}
|
|
|
|
pub fn list_orphans<C: Connection<Backend = Sqlite>>(connection: &C) -> Result<Vec<Address>> {
|
|
let all_directories: Vec<Entry> = query(
|
|
connection,
|
|
Query::SingleQuery(QueryPart::Matches(EntryQuery {
|
|
entity: QueryComponent::Any,
|
|
attribute: QueryComponent::Exact(IS_OF_TYPE_ATTR.to_string()),
|
|
value: QueryComponent::Exact(EntryValue::Address(HIER_ADDR.clone())),
|
|
})),
|
|
)?;
|
|
|
|
let directories_with_parents: Vec<Address> = query(
|
|
connection,
|
|
Query::SingleQuery(QueryPart::Matches(EntryQuery {
|
|
entity: QueryComponent::Any,
|
|
attribute: QueryComponent::Exact(HIER_HAS_ATTR.to_string()),
|
|
value: QueryComponent::Any,
|
|
})),
|
|
)?
|
|
.extract_addresses();
|
|
|
|
Ok(all_directories
|
|
.into_iter()
|
|
.filter(|entry| !directories_with_parents.contains(&entry.entity))
|
|
.map(|e| e.entity)
|
|
.collect())
|
|
}
|
|
|
|
pub async fn list_node<C: Connection<Backend = Sqlite>>(
|
|
connection: &C,
|
|
path: &UPath,
|
|
) -> Result<Vec<Entry>> {
|
|
let resolved_path: Vec<Address> = resolve_path(connection, path, false)?;
|
|
let last = resolved_path.last().unwrap();
|
|
|
|
let entry_addresses = query(
|
|
connection,
|
|
Query::SingleQuery(QueryPart::Matches(EntryQuery {
|
|
entity: QueryComponent::Exact(last.clone()),
|
|
attribute: QueryComponent::Exact(HIER_HAS_ATTR.to_string()),
|
|
value: QueryComponent::Any,
|
|
})),
|
|
)?
|
|
.extract_addresses();
|
|
|
|
Ok(bulk_retrieve_objects(connection, entry_addresses)?
|
|
.into_iter()
|
|
// .filter(|e| [DIR_KEY, FILENAME_KEY, FILE_IDENTITY_KEY].contains(&e.attribute.as_str()))
|
|
.collect::<Vec<Entry>>())
|
|
}
|
|
|
|
pub fn fetch_or_create_dir<C: Connection<Backend = Sqlite>>(
|
|
connection: &C,
|
|
parent: Option<Address>,
|
|
directory: UNode,
|
|
create: bool,
|
|
) -> Result<Address> {
|
|
match parent.clone() {
|
|
Some(address) => trace!("FETCHING/CREATING {}/{:#}", address, directory),
|
|
None => trace!("FETCHING/CREATING /{:#}", directory),
|
|
}
|
|
|
|
let matching_directories = query(
|
|
connection,
|
|
Query::SingleQuery(QueryPart::Matches(EntryQuery {
|
|
entity: QueryComponent::Any,
|
|
attribute: QueryComponent::Exact(String::from(LABEL_ATTR)),
|
|
value: QueryComponent::Exact(EntryValue::Value(Value::String(
|
|
directory.as_ref().clone(),
|
|
))),
|
|
})),
|
|
)?
|
|
.into_iter()
|
|
.map(|e: Entry| e.entity);
|
|
|
|
let parent_has: Vec<Address> = match parent.clone() {
|
|
Some(parent) => query(
|
|
connection,
|
|
Query::SingleQuery(QueryPart::Matches(EntryQuery {
|
|
entity: QueryComponent::Exact(parent),
|
|
attribute: QueryComponent::Exact(String::from(HIER_HAS_ATTR)),
|
|
value: QueryComponent::Any,
|
|
})),
|
|
)?
|
|
.extract_addresses(),
|
|
None => list_orphans(connection)?,
|
|
};
|
|
|
|
let valid_directories: Vec<Address> = matching_directories
|
|
.filter(|a| parent_has.contains(a))
|
|
.collect();
|
|
|
|
match valid_directories.len() {
|
|
0 => {
|
|
if create {
|
|
let new_directory_address = Address::Uuid(Uuid::new_v4());
|
|
let type_entry = Entry {
|
|
entity: new_directory_address.clone(),
|
|
attribute: String::from(IS_OF_TYPE_ATTR),
|
|
value: EntryValue::Address(HIER_ADDR.clone()),
|
|
};
|
|
insert_entry(connection, type_entry)?;
|
|
|
|
let directory_entry = Entry {
|
|
entity: new_directory_address.clone(),
|
|
attribute: String::from(LABEL_ATTR),
|
|
value: EntryValue::Value(Value::String(directory.as_ref().clone())),
|
|
};
|
|
insert_entry(connection, directory_entry)?;
|
|
|
|
if let Some(parent) = parent {
|
|
let has_entry = Entry {
|
|
entity: parent,
|
|
attribute: String::from(HIER_HAS_ATTR),
|
|
value: EntryValue::Address(new_directory_address.clone()),
|
|
};
|
|
insert_entry(connection, has_entry)?;
|
|
}
|
|
|
|
Ok(new_directory_address)
|
|
} else {
|
|
Err(anyhow!("Directory does not exist."))
|
|
}
|
|
}
|
|
1 => Ok(valid_directories[0].clone()),
|
|
_ => Err(anyhow!(
|
|
"Invalid database state - more than one directory matches the query!"
|
|
)),
|
|
}
|
|
}
|
|
|
|
pub fn resolve_path<C: Connection<Backend = Sqlite>>(
|
|
connection: &C,
|
|
path: &UPath,
|
|
create: bool,
|
|
) -> Result<Vec<Address>> {
|
|
let mut result: Vec<Address> = vec![];
|
|
let mut path_stack = path.0.to_vec();
|
|
|
|
path_stack.reverse();
|
|
while !path_stack.is_empty() {
|
|
let dir_address = fetch_or_create_dir(
|
|
connection,
|
|
result.last().cloned(),
|
|
path_stack.pop().unwrap(),
|
|
create,
|
|
)?;
|
|
result.push(dir_address);
|
|
}
|
|
|
|
Ok(result)
|
|
}
|
|
|
|
pub fn initialize_hier(pool: &DbPool) -> Result<()> {
|
|
insert_entry(&pool.get()?, Entry::try_from(&*HIER_INVARIANT)?)?;
|
|
upend_insert_addr!(&pool.get()?, HIER_ADDR, IS_OF_TYPE_ATTR, TYPE_ADDR);
|
|
upend_insert_val!(&pool.get()?, HIER_ADDR, TYPE_HAS_ATTR, HIER_HAS_ATTR);
|
|
Ok(())
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use anyhow::Result;
|
|
|
|
use crate::database::open_upend;
|
|
use tempdir::TempDir;
|
|
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_unode_nonempty() {
|
|
let node = UNode::new("foobar");
|
|
assert!(node.is_ok());
|
|
|
|
let node = UNode::new("");
|
|
assert!(node.is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn test_path_codec() {
|
|
let path = UPath(vec![
|
|
UNode("top".to_string()),
|
|
UNode("foo".to_string()),
|
|
UNode("bar".to_string()),
|
|
UNode("baz".to_string()),
|
|
]);
|
|
|
|
let str_path = path.to_string();
|
|
assert!(!str_path.is_empty());
|
|
|
|
let decoded_path: Result<UPath> = str_path.parse();
|
|
assert!(decoded_path.is_ok());
|
|
|
|
assert_eq!(path, decoded_path.unwrap());
|
|
}
|
|
|
|
#[test]
|
|
fn test_path_validation() {
|
|
let valid_path: Result<UPath> = "a/b/c/d/e/f/g".parse();
|
|
assert!(valid_path.is_ok());
|
|
|
|
let invalid_path: Result<UPath> = "a/b/c//d/e/f/g".parse();
|
|
assert!(invalid_path.is_err());
|
|
|
|
let invalid_path: Result<UPath> = "a//b/c//d/e/f///g".parse();
|
|
assert!(invalid_path.is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn test_path_manipulation() {
|
|
// Initialize database
|
|
let temp_dir = TempDir::new("upend-test").unwrap();
|
|
let open_result = open_upend(&temp_dir, None, true).unwrap();
|
|
|
|
let foo_result = fetch_or_create_dir(
|
|
&open_result.pool.get().unwrap(),
|
|
None,
|
|
UNode("foo".to_string()),
|
|
true,
|
|
);
|
|
assert!(foo_result.is_ok());
|
|
|
|
let bar_result = fetch_or_create_dir(
|
|
&open_result.pool.get().unwrap(),
|
|
None,
|
|
UNode("bar".to_string()),
|
|
true,
|
|
);
|
|
assert!(bar_result.is_ok());
|
|
let bar_result = bar_result.unwrap();
|
|
|
|
let baz_result = fetch_or_create_dir(
|
|
&open_result.pool.get().unwrap(),
|
|
Some(bar_result.clone()),
|
|
UNode("baz".to_string()),
|
|
true,
|
|
);
|
|
assert!(baz_result.is_ok());
|
|
let baz_result = baz_result.unwrap();
|
|
|
|
let orphans = list_orphans(&open_result.pool.get().unwrap());
|
|
assert!(orphans.is_ok());
|
|
assert_eq!(orphans.unwrap().len(), 2);
|
|
|
|
let resolve_result = resolve_path(
|
|
&open_result.pool.get().unwrap(),
|
|
&"bar/baz".parse().unwrap(),
|
|
false,
|
|
);
|
|
|
|
assert!(resolve_result.is_ok());
|
|
assert_eq!(
|
|
resolve_result.unwrap(),
|
|
vec![bar_result.clone(), baz_result.clone()]
|
|
);
|
|
|
|
let resolve_result = resolve_path(
|
|
&open_result.pool.get().unwrap(),
|
|
&"bar/baz/bax".parse().unwrap(),
|
|
false,
|
|
);
|
|
assert!(resolve_result.is_err());
|
|
|
|
let resolve_result = resolve_path(
|
|
&open_result.pool.get().unwrap(),
|
|
&"bar/baz/bax".parse().unwrap(),
|
|
true,
|
|
);
|
|
assert!(resolve_result.is_ok());
|
|
|
|
let bax_result = fetch_or_create_dir(
|
|
&open_result.pool.get().unwrap(),
|
|
Some(baz_result.clone()),
|
|
UNode("bax".to_string()),
|
|
false,
|
|
);
|
|
assert!(bax_result.is_ok());
|
|
let bax_result = bax_result.unwrap();
|
|
|
|
assert_eq!(
|
|
resolve_result.unwrap(),
|
|
vec![bar_result, baz_result, bax_result]
|
|
);
|
|
}
|
|
}
|