forked from dkanus/Avarice
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master
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feature_da
| Author | SHA1 | Date |
|---|---|---|
 Anton Tarasenko
|
2bffa412ea | 4 years ago |
|
Anton Tarasenko
|
5602ee7c0a | 4 years ago |
10 changed files with 1322 additions and 6 deletions
@ -1,6 +1,175 @@
|
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# This file is automatically @generated by Cargo. |
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# It is not intended for manual editing. |
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} |
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} |
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@ -0,0 +1,220 @@
|
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use serde_json; |
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use serde_json::json; |
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use std::error::Error; |
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|
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extern crate custom_error; |
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use custom_error::custom_error; |
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|
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const JSON_POINTER_SEPARATOR: &str = "/"; |
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|
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custom_error! { pub IncorrectPointer{pointer: String} = "Incorrect pointer is specified: {pointer}" } |
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|
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/// This is a enum that used internally to refer to values inside of
|
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/// JSON (their serde implementation) objects and arrays.
|
||||
/// This enum helps to simplify module's code.
|
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///
|
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/// For values inside of JSON object it stores object's
|
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/// `Map<String, serde_json::Value>` and name of referred value.
|
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///
|
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/// For values inside JSON arrays it stores array's
|
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/// `Vec<serde_json::Value>` and referred index.
|
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///
|
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/// `Invalid` can be used to return a failed state.
|
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enum ValueReference<'a> { |
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Object(&'a mut serde_json::Map<String, serde_json::Value>, String), |
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Array(&'a mut Vec<serde_json::Value>, usize), |
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Invalid, |
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} |
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|
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/// Implements database's file by wrapping JSON value (`serde_json::Value`)
|
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/// and providing several convenient accessor methods.
|
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#[derive(Debug)] |
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pub struct File { |
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/// File's full contents, normally a JSON object.
|
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contents: serde_json::Value, |
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} |
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|
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impl ToString for File { |
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fn to_string(&self) -> String { |
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self.contents.to_string() |
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} |
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} |
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|
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impl File { |
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/// Creates an empty file that will contain an empty JSON object.
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pub fn empty() -> File { |
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File { |
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contents: json!({}), |
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} |
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} |
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|
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/// Loads JSON value from the specified file.
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pub fn load(file_contents: String) -> Result<File, Box<dyn Error>> { |
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Ok(File { |
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contents: serde_json::from_str(&file_contents)?, |
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}) |
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} |
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|
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/// Returns file's "root", - JSON value contained inside it.
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pub fn root(&self) -> &serde_json::Value { |
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&self.contents |
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} |
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|
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/// Attempts to return JSON value, corresponding to the given JSON pointer.
|
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/// `None` if the value is missing.
|
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pub fn get(&self, pointer: &str) -> Option<&serde_json::Value> { |
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self.contents.pointer(pointer) |
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} |
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|
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/// Checks if values at a given JSON pointer exists.
|
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/// Returns `true` if it does.
|
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pub fn contains(&self, pointer: &str) -> bool { |
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self.get(pointer) != None |
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} |
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|
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/// Inserts new JSON value inside this file
|
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/// (possibly in some sub-object/array).
|
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///
|
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/// Given pointer must point at new value:
|
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/// 1. If it already exists, - it will be overwritten.
|
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/// 2. If it does not exist, but it's parent object/array does -
|
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/// it will be added.
|
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/// 3. Otherwise an error will be raise.
|
||||
///
|
||||
/// If array needs to be expanded, - missing values will be filled
|
||||
/// with `json!(null)`, i.e. inserting `7` at index `5` in array `[1, 2, 3]`
|
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/// will produce `[1, 2, 3, null, null, 7]`.
|
||||
pub fn insert( |
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&mut self, |
||||
pointer: &str, |
||||
new_value: serde_json::Value, |
||||
) -> Result<(), IncorrectPointer> { |
||||
self.touch(pointer)?; |
||||
match self.contents.pointer_mut(pointer) { |
||||
Some(v) => *v = new_value, |
||||
_ => { |
||||
// If after `touch()` call we still don't have an existing value -
|
||||
// something is wrong with the `pointer`
|
||||
return Err(IncorrectPointer { |
||||
pointer: pointer.to_owned(), |
||||
}); |
||||
} |
||||
}; |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Removes (and returns) value specified by theJSON pointer.
|
||||
/// If it did not exist - returns `None`.
|
||||
pub fn remove(&mut self, pointer: &str) -> Option<serde_json::Value> { |
||||
match self.pointer_to_reference(pointer) { |
||||
ValueReference::Object(map, variable_name) => map.remove(&variable_name), |
||||
ValueReference::Array(vec, variable_index) => { |
||||
if variable_index < vec.len() { |
||||
return Some(vec.remove(variable_index)); |
||||
} |
||||
None |
||||
} |
||||
_ => None, |
||||
} |
||||
} |
||||
|
||||
/// Helper method to create a value if missing (as `json!(null)`).
|
||||
/// Can only be done if parent container already exists.
|
||||
///
|
||||
/// For specifics refer to `insert()` method.
|
||||
fn touch(&mut self, pointer: &str) -> Result<(), IncorrectPointer> { |
||||
// If value is present - we're done
|
||||
if pointer.is_empty() || self.contents.pointer_mut(pointer).is_some() { |
||||
return Ok(()); |
||||
} |
||||
// Otherwise - try to create it
|
||||
match self.pointer_to_reference(pointer) { |
||||
ValueReference::Object(map, variable_name) => { |
||||
map.insert(variable_name, json!(null)); |
||||
} |
||||
ValueReference::Array(vec, variable_index) => { |
||||
// We've checked at the beginning of this method that value
|
||||
// at `variable_index` does not exist, which guarantees
|
||||
// that array is to short and we won't shrink it
|
||||
vec.resize(variable_index + 1, json!(null)); |
||||
} |
||||
_ => { |
||||
return Err(IncorrectPointer { |
||||
pointer: pointer.to_owned(), |
||||
}) |
||||
} |
||||
}; |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Helper method, - converts JSON pointer into auxiliary `ValueReference` enum.
|
||||
fn pointer_to_reference<'a>(&'a mut self, pointer: &str) -> ValueReference<'a> { |
||||
if pointer.is_empty() { |
||||
return ValueReference::Invalid; |
||||
} |
||||
// Extract variable name (that `pointer` points to)
|
||||
// and reference to it's container
|
||||
//
|
||||
// i.e. given file with '{"obj":{"arr":[1,3,5,2,4]}}',
|
||||
// for pointer `/obj/arr/5`,
|
||||
// it will return, basically, `(&[1,3,5,2,4], "5")`
|
||||
let container_variable_pair = |
||||
pop_json_pointer(pointer).and_then(move |(path, variable_name)| { |
||||
match self.contents.pointer_mut(&path) { |
||||
Some(v) => Some((v, variable_name)), |
||||
_ => None, |
||||
} |
||||
}); |
||||
let (json_container, variable_name) = match container_variable_pair { |
||||
Some(v) => v, |
||||
_ => return ValueReference::Invalid, |
||||
}; |
||||
// For arrays we also need to confirm validity of the variable name
|
||||
// and convert it into `usize`
|
||||
match json_container { |
||||
serde_json::Value::Object(map) => ValueReference::Object(map, variable_name), |
||||
serde_json::Value::Array(vec) => { |
||||
let index: usize = match variable_name.parse() { |
||||
Ok(v) => v, |
||||
_ => return ValueReference::Invalid, |
||||
}; |
||||
ValueReference::Array(vec, index) |
||||
} |
||||
_ => ValueReference::Invalid, |
||||
} |
||||
} |
||||
} |
||||
|
||||
// Helper function to disassemble JSON path.
|
||||
fn pop_json_pointer(pointer: &str) -> Option<(String, String)> { |
||||
let mut pointer = pointer.to_string(); |
||||
let last_separator_index = match pointer.rfind(JSON_POINTER_SEPARATOR) { |
||||
Some(v) => v, |
||||
_ => { |
||||
return None; |
||||
} |
||||
}; |
||||
if last_separator_index >= pointer.len() { |
||||
pointer.pop(); |
||||
return Some((pointer, String::new())); |
||||
} |
||||
let var_name = pointer.split_off(last_separator_index + 1); |
||||
pointer.pop(); |
||||
Some((pointer, var_name)) |
||||
} |
||||
|
||||
#[test] |
||||
fn test_pop_json_pointer() { |
||||
assert_eq!( |
||||
pop_json_pointer("/a/b/c/d"), |
||||
Some(("/a/b/c".to_owned(), "d".to_owned())) |
||||
); |
||||
assert_eq!(pop_json_pointer("/"), Some(("".to_owned(), "".to_owned()))); |
||||
assert_eq!( |
||||
pop_json_pointer("/a/b/"), |
||||
Some(("/a/b".to_owned(), "".to_owned())) |
||||
); |
||||
assert_eq!(pop_json_pointer(""), None); |
||||
// This pointer is incorrect
|
||||
assert_eq!(pop_json_pointer("var"), None); |
||||
} |
||||
@ -0,0 +1,240 @@
|
||||
use super::*; |
||||
use log::{error, info, warn}; |
||||
use std::collections::HashMap; |
||||
use std::error::Error; |
||||
use std::fs; |
||||
use std::path; |
||||
use std::path::Path; |
||||
|
||||
extern crate custom_error; |
||||
use custom_error::custom_error; |
||||
|
||||
const JSON_EXTENSION: &str = "json"; |
||||
|
||||
custom_error! { pub IOError |
||||
NotDirectory{path: String} = "Path to the database should point at a directory: {path}", |
||||
} |
||||
|
||||
/// Reads database data from a directory at the specified path
|
||||
/// as a vector of `Group`s.
|
||||
pub fn read(db_path: &path::Path) -> Result<Vec<Group>, Box<dyn Error>> { |
||||
if !db_path.is_dir() { |
||||
error!( |
||||
"Loading database from a non-directory {} was attempted.", |
||||
db_path.display() |
||||
); |
||||
return Err(Box::new(IOError::NotDirectory { |
||||
path: db_path.display().to_string(), |
||||
})); |
||||
} |
||||
info!("Loading database from {}.", db_path.display()); |
||||
let mut groups = Vec::new(); |
||||
for entry in fs::read_dir(db_path)? { |
||||
let path = match entry { |
||||
Ok(r) => r, |
||||
_ => continue, |
||||
} |
||||
.path(); |
||||
if !check_valid_group_dir(path.as_path()) { |
||||
continue; |
||||
} |
||||
match read_group(&path)? { |
||||
Some(g) => groups.push(g), |
||||
_ => (), |
||||
} |
||||
} |
||||
info!("Correctly finished leading database."); |
||||
Ok(groups) |
||||
} |
||||
|
||||
/// Writes data of the given database into the directory specified by the path.
|
||||
/// Does not clear it from any previously existing files,
|
||||
/// you can use `clear_dir()` for that.
|
||||
pub fn write(db_path: &path::Path, db: &Database) -> Result<(), Box<dyn Error>> { |
||||
if db_path.exists() && !db_path.is_dir() { |
||||
error!( |
||||
"Cannot write database into a non-directory {}", |
||||
db_path.display() |
||||
); |
||||
return Err(Box::new(IOError::NotDirectory { |
||||
path: db_path.display().to_string(), |
||||
})); |
||||
} |
||||
fs::create_dir(db_path)?; |
||||
for group in db.group_names().iter() { |
||||
let group_path = db_path.join(group); |
||||
if !group_path.exists() || !group_path.is_dir() { |
||||
fs::create_dir(group_path.clone())?; |
||||
} |
||||
for file in db.file_names_in(group).iter() { |
||||
let file_path = group_path.join(format!("{}.{}", file, JSON_EXTENSION)); |
||||
match db.file(group, file) { |
||||
Some(file) => fs::write(file_path, file.to_string())?, |
||||
_ => (), |
||||
} |
||||
} |
||||
} |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Given a path to directory that was used for database storage -
|
||||
/// clears it's data.
|
||||
///
|
||||
/// This means removing any '.json' files from all immediate subdirectories and
|
||||
/// then removing any subdirectories that were or became empty.
|
||||
pub fn clear_dir(db_path: &path::Path) -> Result<(), Box<dyn Error>> { |
||||
info!( |
||||
"Clearing directory {} from database files.", |
||||
db_path.display() |
||||
); |
||||
if !db_path.exists() { |
||||
info!("Directory not found, nothing to do."); |
||||
return Ok(()); |
||||
} |
||||
for entry in fs::read_dir(db_path)? { |
||||
let dir_path = match entry { |
||||
Ok(r) => r, |
||||
_ => continue, |
||||
} |
||||
.path(); |
||||
if !check_valid_group_dir(dir_path.as_path()) { |
||||
continue; |
||||
} |
||||
for entry in fs::read_dir(dir_path.clone())? { |
||||
let file_path = match entry { |
||||
Ok(r) => r, |
||||
_ => continue, |
||||
} |
||||
.path(); |
||||
if !check_valid_data_file(file_path.as_path()) { |
||||
continue; |
||||
} |
||||
fs::remove_file(file_path)?; |
||||
} |
||||
let _ = fs::remove_dir(dir_path); |
||||
} |
||||
let _ = fs::remove_dir(db_path); |
||||
info!("Correctly finished clearing database files."); |
||||
Ok(()) |
||||
} |
||||
|
||||
/// helper function to read a group from a given subdirectory:
|
||||
/// loads data from all containing '.json' files.
|
||||
fn read_group(group_path: &path::Path) -> Result<Option<Group>, Box<dyn Error>> { |
||||
let mut files = HashMap::new(); |
||||
for entry in fs::read_dir(group_path)? { |
||||
let path = match entry { |
||||
Ok(r) => r, |
||||
_ => continue, |
||||
} |
||||
.path(); |
||||
if !check_valid_data_file(path.as_path()) { |
||||
continue; |
||||
} |
||||
let file_name = get_file_name(path.as_path()); |
||||
let file_contents = fs::read_to_string(&path)?; |
||||
files.insert(file_name, File::load(file_contents)?); |
||||
} |
||||
if files.len() > 0 { |
||||
return Ok(Some(Group { |
||||
name: get_file_name(group_path), |
||||
files, |
||||
})); |
||||
} |
||||
Ok(None) |
||||
} |
||||
|
||||
/// Checks if given path points at a directory that can represent
|
||||
/// a database group (has a valid name).
|
||||
fn check_valid_group_dir(dir_path: &path::Path) -> bool { |
||||
if !dir_path.is_dir() { |
||||
warn!( |
||||
r#"Skipping {}, because only directories are expected in database's root."#, |
||||
dir_path.display() |
||||
); |
||||
return false; |
||||
} |
||||
if !is_name_valid(&get_file_name(dir_path)) { |
||||
warn!( |
||||
r#"Skipping directory {}, because it does not have a valid name."#, |
||||
dir_path.display() |
||||
); |
||||
return false; |
||||
} |
||||
true |
||||
} |
||||
|
||||
/// Checks if given path points at a file that can represent
|
||||
/// a database group (has a valid name).
|
||||
fn check_valid_data_file(file_path: &path::Path) -> bool { |
||||
if file_path.is_dir() { |
||||
warn!( |
||||
r#"Skipping directory {}, because group directories are only\ |
||||
supposed to contain files."#, |
||||
file_path.display() |
||||
); |
||||
return false; |
||||
} |
||||
let name = get_file_name(file_path); |
||||
if !is_name_valid(&name) { |
||||
warn!( |
||||
r#"Skipping file {}, because it does not have a valid name."#, |
||||
file_path.display() |
||||
); |
||||
return false; |
||||
} |
||||
let extension = get_file_extension(file_path); |
||||
if !JSON_EXTENSION.eq_ignore_ascii_case(&extension) { |
||||
warn!( |
||||
r#"Skipping file {}, because it does not have "json" extension."#, |
||||
file_path.display() |
||||
); |
||||
return false; |
||||
} |
||||
true |
||||
} |
||||
|
||||
fn get_file_name(path: &path::Path) -> String { |
||||
path.file_stem() |
||||
.and_then(|x| x.to_str()) |
||||
.unwrap_or_default() |
||||
.to_string() |
||||
} |
||||
|
||||
fn get_file_extension(path: &path::Path) -> String { |
||||
path.extension() |
||||
.and_then(|x| x.to_str()) |
||||
.unwrap_or_default() |
||||
.to_string() |
||||
} |
||||
|
||||
#[test] |
||||
fn test_file_name_extension_extraction() { |
||||
assert_eq!(get_file_name(Path::new("/dir/file")), "file".to_owned()); |
||||
assert_eq!( |
||||
get_file_name(Path::new("/dir/sub_dir/some.ext")), |
||||
"some".to_owned() |
||||
); |
||||
assert_eq!( |
||||
get_file_name(Path::new("/dir/sub_dir/.ext")), |
||||
".ext".to_owned() |
||||
); |
||||
assert_eq!( |
||||
get_file_name(Path::new("/dir/sub_dir/thing.")), |
||||
"thing".to_owned() |
||||
); |
||||
|
||||
assert_eq!(get_file_extension(Path::new("/dir/file")), "".to_owned()); |
||||
assert_eq!( |
||||
get_file_extension(Path::new("/dir/sub_dir/some.ext")), |
||||
"ext".to_owned() |
||||
); |
||||
assert_eq!( |
||||
get_file_extension(Path::new("/dir/sub_dir/.ext")), |
||||
"".to_owned() |
||||
); |
||||
assert_eq!( |
||||
get_file_extension(Path::new("/dir/sub_dir/thing.")), |
||||
"".to_owned() |
||||
); |
||||
} |
||||
@ -0,0 +1,263 @@
|
||||
#[cfg(test)] |
||||
mod tests; |
||||
|
||||
use serde_json; |
||||
use std::collections::HashMap; |
||||
use std::error::Error; |
||||
use std::path; |
||||
|
||||
extern crate custom_error; |
||||
use custom_error::custom_error; |
||||
|
||||
pub mod file; |
||||
pub use file::File; |
||||
|
||||
pub mod io; |
||||
|
||||
custom_error! { pub DBError |
||||
InvalidEntityName{entity_name: String} = r#"Cannot use {entity_name} for file or group"#, |
||||
NoGroup{group_name: String} = r#"Group "{group_name}" does not exist"#, |
||||
NoFile{group_name: String, file_name: String} = r#"There is no "{file_name}" file in group\ |
||||
"{group_name}""#, |
||||
GroupAlreadyExists{group_name: String} = r#"Group "{group_name}" already exists"#, |
||||
FileAlreadyExists{group_name: String, file_name: String} = r#"File "{file_name}" already exists\ |
||||
in the group "{group_name}""#, |
||||
} |
||||
|
||||
/// Avarice database is a collection of named JSON values (by default objects),
|
||||
/// separated into different names groups. Names of such groups and JSON values must only contain
|
||||
/// numbers and latin letters (ASCII subset).
|
||||
///
|
||||
/// This database is only supposed to hold a relatively small amount of data
|
||||
/// that:
|
||||
///
|
||||
/// 1. can be freely and full loaded into memory;
|
||||
/// 2. then saved all at once.
|
||||
///
|
||||
/// Database is loaded and saved on the disk as a directory,
|
||||
/// that contains subdirectories (with valid names) for each group;
|
||||
/// those subdirectories in turn must contain "*.json" files (with valid names)
|
||||
/// that correspond to the stored JSON values.
|
||||
///
|
||||
/// Database directory should not contain any other files, but their presence
|
||||
/// should not prevent database from loading (such files should be ignored).
|
||||
pub struct Database { |
||||
/// Path to the database's directory
|
||||
storage_path: path::PathBuf, |
||||
/// Collection of groups (of JSON values) inside of database
|
||||
groups: Vec<Group>, |
||||
} |
||||
|
||||
/// Represents a database's group: a ste of named files
|
||||
pub struct Group { |
||||
/// Name of the group
|
||||
name: String, |
||||
/// Maps file names with their contents (as file::File structures)
|
||||
files: HashMap<String, File>, |
||||
} |
||||
|
||||
impl Database { |
||||
/// Creates new database by loading it from the specified directory.
|
||||
/// Directory must contain valid database and be readable.
|
||||
pub fn load(storage_path: &path::Path) -> Result<Database, Box<dyn Error>> { |
||||
Ok(Database { |
||||
storage_path: storage_path.to_path_buf(), |
||||
groups: io::read(storage_path)?, |
||||
}) |
||||
} |
||||
|
||||
/// Removes all data from the database.
|
||||
pub fn clear(&mut self) { |
||||
self.groups = Vec::new(); |
||||
} |
||||
|
||||
/// Returns path from which this database was loaded (can be changed with `change_path()`).
|
||||
pub fn path(&mut self) -> path::PathBuf { |
||||
self.storage_path.clone() |
||||
} |
||||
|
||||
/// Changes current path of this database. All operations with files will use this path,
|
||||
/// unless stated otherwise.
|
||||
/// Directory must contain valid database and be readable.
|
||||
///
|
||||
/// This method will also remove all data from the current database's path
|
||||
/// and fail if it can't.
|
||||
pub fn change_path(&mut self, new_path: &path::Path) -> Result<(), Box<dyn Error>> { |
||||
self.write_copy(new_path)?; |
||||
io::clear_dir(&self.storage_path)?; |
||||
self.storage_path = new_path.to_path_buf(); |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Erases database's data on disk.
|
||||
pub fn erase(self) -> Result<(), Box<dyn Error>> { |
||||
io::clear_dir(&self.storage_path)?; |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Writes copy of the current database into specified directory.
|
||||
/// Erases any preexisting database files.
|
||||
///
|
||||
/// Empty group won't be saved.
|
||||
pub fn write_copy(&self, new_path: &path::Path) -> Result<(), Box<dyn Error>> { |
||||
io::clear_dir(new_path)?; |
||||
io::write(new_path, &self)?; |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Writes current state of the database on the disk.
|
||||
///
|
||||
/// Empty group won't be saved.
|
||||
pub fn save(&self) -> Result<(), Box<dyn Error>> { |
||||
self.write_copy(&self.storage_path)?; |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Returns names of all the groups in the database.
|
||||
pub fn group_names(&self) -> Vec<String> { |
||||
self.groups.iter().map(|x| x.name.clone()).collect() |
||||
} |
||||
|
||||
/// Returns names of all the files in a particular group.
|
||||
pub fn file_names_in(&self, group_name: &str) -> Vec<String> { |
||||
match self.groups.iter().find(|x| x.name.eq(group_name)) { |
||||
Some(group) => group.files.keys().map(|x| x.clone()).collect(), |
||||
None => Vec::new(), |
||||
} |
||||
} |
||||
|
||||
/// Checks if specified group exists in the database
|
||||
pub fn contains_group(&self, group_name: &str) -> bool { |
||||
self.group_index(group_name).is_ok() |
||||
} |
||||
|
||||
/// Creates a new empty group.
|
||||
/// Will produce error if group already exists.
|
||||
pub fn create_group(&mut self, group_name: &str) -> Result<(), DBError> { |
||||
assert_name_is_valid(group_name)?; |
||||
self.assert_no_group(group_name)?; |
||||
self.groups.push(Group { |
||||
name: group_name.to_owned(), |
||||
files: HashMap::new(), |
||||
}); |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Removes specified group.
|
||||
/// Will produce error if group does not exist.
|
||||
pub fn remove_group(&mut self, group_name: &str) -> Result<(), DBError> { |
||||
let index = self.group_index(group_name)?; |
||||
self.groups.remove(index); |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Checks if specified file (in a specified group) is contained in the database.
|
||||
pub fn contains_file(&self, group_name: &str, file_name: &str) -> bool { |
||||
self.group_files(group_name) |
||||
.and_then(|x| Ok(x.contains_key(&file_name.to_owned()))) |
||||
.unwrap_or(false) |
||||
} |
||||
|
||||
/// Creates new file in the specified group that will contain an empty JSON object.
|
||||
/// Will produce error if file already exists.
|
||||
pub fn create_file(&mut self, group_name: &str, file_name: &str) -> Result<&mut File, DBError> { |
||||
assert_name_is_valid(&file_name)?; |
||||
let files = self.group_files_mut(group_name)?; |
||||
if files.contains_key(&file_name.to_owned()) { |
||||
return Err(DBError::FileAlreadyExists { |
||||
group_name: group_name.to_owned(), |
||||
file_name: file_name.to_owned(), |
||||
}); |
||||
} |
||||
let new_file = File::empty(); |
||||
files.insert(file_name.to_owned(), new_file); |
||||
Ok(files |
||||
.get_mut(file_name) |
||||
.expect("Missing value that was just inserted.")) |
||||
} |
||||
|
||||
/// Removes specified file (in a specified group).
|
||||
/// Will produce error if file does not exist.
|
||||
pub fn remove_file(&mut self, group_name: &str, file_name: &str) -> Result<(), DBError> { |
||||
if self |
||||
.group_files_mut(group_name)? |
||||
.remove(file_name) |
||||
.is_none() |
||||
{ |
||||
return Err(DBError::NoFile { |
||||
group_name: group_name.to_owned(), |
||||
file_name: file_name.to_owned(), |
||||
}); |
||||
} |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Returns immutable reference to the specified file (in a specified group) as `file::File`.
|
||||
/// `None` if file does not exist.
|
||||
pub fn file_mut(&mut self, group_name: &str, file_name: &str) -> Option<&mut File> { |
||||
match self.group_files_mut(group_name) { |
||||
Ok(files) => files.get_mut(&file_name.to_owned()), |
||||
_ => None, |
||||
} |
||||
} |
||||
|
||||
/// Returns mutable reference to the specified file (in a specified group) as `file::File`.
|
||||
/// `None` if file does not exist.
|
||||
pub fn file(&self, group_name: &str, file_name: &str) -> Option<&File> { |
||||
match self.group_files(group_name) { |
||||
Ok(files) => files.get(&file_name.to_owned()), |
||||
_ => None, |
||||
} |
||||
} |
||||
|
||||
/// Helper method that raises error if specified group exists.
|
||||
fn assert_no_group(&self, group_name: &str) -> Result<(), DBError> { |
||||
if self.group_index(group_name).is_ok() { |
||||
return Err(DBError::GroupAlreadyExists { |
||||
group_name: group_name.to_owned(), |
||||
}); |
||||
} |
||||
Ok(()) |
||||
} |
||||
|
||||
/// Returns current index of the specified group in`groups` vector.
|
||||
fn group_index(&self, group_name: &str) -> Result<usize, DBError> { |
||||
match self.groups.iter().position(|x| x.name.eq(group_name)) { |
||||
Some(index) => Ok(index), |
||||
_ => { |
||||
return Err(DBError::NoGroup { |
||||
group_name: group_name.to_owned(), |
||||
}) |
||||
} |
||||
} |
||||
} |
||||
|
||||
// Helper methods that return (im)mutable reference to `HashMap`
|
||||
// (of 'file_name -> file' map) for a particular group.
|
||||
fn group_files_mut(&mut self, group_name: &str) -> Result<&mut HashMap<String, File>, DBError> { |
||||
let group_index = self.group_index(group_name)?; |
||||
Ok(&mut (&mut self.groups[group_index]).files) |
||||
} |
||||
|
||||
fn group_files(&self, group_name: &str) -> Result<&HashMap<String, File>, DBError> { |
||||
let group_index = self.group_index(group_name)?; |
||||
Ok(&self.groups[group_index].files) |
||||
} |
||||
} |
||||
|
||||
/// Name validity check (for groups and files)
|
||||
fn is_name_valid(entity_name: &str) -> bool { |
||||
entity_name |
||||
.chars() |
||||
.all(|x| x.is_ascii_alphabetic() || x.is_ascii_digit()) |
||||
} |
||||
|
||||
/// Helper function that raises error if passed name is invalid
|
||||
fn assert_name_is_valid(entity_name: &str) -> Result<(), DBError> { |
||||
if is_name_valid(entity_name) { |
||||
return Ok(()); |
||||
} |
||||
return Err(DBError::InvalidEntityName { |
||||
entity_name: entity_name.to_owned(), |
||||
}); |
||||
} |
||||
@ -0,0 +1,380 @@
|
||||
use super::*; |
||||
use serde_json::json; |
||||
use std::fs; |
||||
use std::path; |
||||
|
||||
const TEST_DB_PATH: &str = "./fixtures/database"; |
||||
const TEST_DB_MOVED_PATH: &str = "./fixtures/moved"; |
||||
|
||||
const NO_DB_MESSAGE: &str = "Can not find/load test database"; |
||||
|
||||
struct TestCleanup { |
||||
path: String, |
||||
clear_moved: bool, |
||||
} |
||||
|
||||
impl Drop for TestCleanup { |
||||
fn drop(&mut self) { |
||||
let _ = fs::remove_dir_all(&self.path); |
||||
if self.clear_moved { |
||||
let _ = fs::remove_dir_all(TEST_DB_MOVED_PATH); |
||||
} |
||||
} |
||||
} |
||||
|
||||
fn prepare_db_copy(copy_id: &str, clear_moved: bool) -> (String, TestCleanup) { |
||||
let path = format!("{}_{}", TEST_DB_PATH, copy_id); |
||||
let original_db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
original_db |
||||
.write_copy(path::Path::new(&path)) |
||||
.expect("Should be able to create a new copy of the fixture database."); |
||||
( |
||||
path.clone(), |
||||
TestCleanup { |
||||
path: path.to_owned(), |
||||
clear_moved: clear_moved, |
||||
}, |
||||
) |
||||
} |
||||
|
||||
#[test] |
||||
fn db_path() { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
assert!(db.path() == path::Path::new(TEST_DB_PATH)); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_clear() { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
db.clear(); |
||||
assert!(!db.contains_group("game")); |
||||
assert!(!db.contains_file("administration", "registered")); |
||||
let names = db.group_names(); |
||||
assert_eq!(names.len(), 0); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_group_names() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
|
||||
let names = db.group_names(); |
||||
assert!(names.contains(&"administration".to_owned())); |
||||
assert!(names.contains(&"game".to_owned())); |
||||
assert_eq!(names.len(), 2); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_file_names() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
|
||||
let names_admin = db.file_names_in("administration"); |
||||
let names_game = db.file_names_in("game"); |
||||
assert!(names_admin.contains(&"registered".to_owned())); |
||||
assert!(names_game.contains(&"general".to_owned())); |
||||
assert!(names_game.contains(&"perks".to_owned())); |
||||
assert_eq!(names_admin.len(), 1); |
||||
assert_eq!(names_game.len(), 2); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_group_check() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
|
||||
assert!(db.contains_group("game")); |
||||
assert!(db.contains_group("administration")); |
||||
assert!(!db.contains_group("perks")); |
||||
assert!(!db.contains_group("7random7")); |
||||
assert!(!db.contains_group("")); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_group_remove() -> Result<(), Box<dyn Error>> { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Success
|
||||
db.remove_group("administration")?; |
||||
db.remove_group("game")?; |
||||
assert!(!db.contains_group("administration")); |
||||
assert!(!db.contains_group("game")); |
||||
// Failure
|
||||
db.remove_group("test") |
||||
.expect_err("Testing whether removing non-existent groups with incorrect ASCII characters causes errors."); |
||||
db.remove_group("administration") |
||||
.expect_err("Testing whether removing non-existent groups with incorrect ASCII characters causes errors."); |
||||
db.remove_group("game group").expect_err( |
||||
"Testing whether removing non-existent groups with whitespace characters causes errors.", |
||||
); |
||||
Ok(()) |
||||
} |
||||
|
||||
#[test] |
||||
fn db_group_create() -> Result<(), Box<dyn Error>> { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Success
|
||||
db.create_group("7random7")?; |
||||
assert!(db.contains_group("7random7")); |
||||
assert!(db.contains_group("game")); |
||||
// Failure
|
||||
db.create_group("my_group").expect_err( |
||||
"Testing whether creating groups with incorrect ASCII characters causes errors.", |
||||
); |
||||
db.create_group("my group") |
||||
.expect_err("Testing whether creating groups with whitespace characters causes errors."); |
||||
db.create_group("Жgroup") |
||||
.expect_err("Testing whether creating groups with non-ASCII characters causes errors."); |
||||
// Create after removal
|
||||
db.remove_group("game")?; |
||||
assert!(!db.contains_group("game")); |
||||
db.create_group("game")?; |
||||
assert!(db.contains_group("game")); |
||||
assert!(db.file_names_in("game").is_empty()); |
||||
Ok(()) |
||||
} |
||||
|
||||
#[test] |
||||
fn db_file_check() { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Success
|
||||
assert!(db.contains_file("administration", "registered")); |
||||
assert!(db.file("game", "general").is_some()); |
||||
assert!(db.file_mut("game", "perks").is_some()); |
||||
// Failure
|
||||
assert!(!db.contains_file("game", "perk")); |
||||
assert!(db.file("games", "perks").is_none()); |
||||
assert!(db.file_mut("random", "rnd_file").is_none()); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_file_create() -> Result<(), Box<dyn Error>> { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Success
|
||||
let file = db.create_file("administration", "secrets")?; |
||||
assert_eq!(file.to_string(), "{}"); |
||||
assert!(db.contains_file("administration", "secrets")); |
||||
assert!(db.contains_file("game", "perks")); |
||||
// Failure
|
||||
db.create_file("administration", "secrets") |
||||
.expect_err("Testing whether creating existing file causes errors."); |
||||
db.create_file("none", "secrets") |
||||
.expect_err("Testing whether creating existing file in non-existent group causes errors."); |
||||
db.create_file("game", "sec_rets") |
||||
.expect_err("Testing whether creating existing file with invalid name causes errors."); |
||||
Ok(()) |
||||
} |
||||
|
||||
#[test] |
||||
fn db_file_remove() -> Result<(), Box<dyn Error>> { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Success
|
||||
db.remove_file("administration", "registered")?; |
||||
assert!(!db.contains_file("administration", "registered")); |
||||
assert!(db.contains_group("administration")); |
||||
db.remove_file("game", "perks")?; |
||||
assert_eq!(db.file_names_in("game").len(), 1); |
||||
// Failure
|
||||
db.remove_file("administration", "registered") |
||||
.expect_err("Testing whether removing non-existent files causes errors."); |
||||
db.remove_file("administration", "never") |
||||
.expect_err("Testing whether removing non-existent files causes errors."); |
||||
db.remove_file("never", "file") |
||||
.expect_err("Testing whether removing non-existent files causes errors."); |
||||
Ok(()) |
||||
} |
||||
|
||||
#[test] |
||||
fn file_json_contents() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
let registered = db.file("administration", "registered").unwrap().root(); |
||||
let user_map = registered |
||||
.as_object() |
||||
.expect("Read value is not an object."); |
||||
assert_eq!(user_map.len(), 2); |
||||
assert!(user_map.contains_key("76561198025127722")); |
||||
let user_record = user_map |
||||
.get("76561198044316328") |
||||
.unwrap() |
||||
.as_object() |
||||
.unwrap(); |
||||
assert_eq!(user_record.len(), 3); |
||||
assert_eq!(user_record.get("ip_lock").unwrap().as_bool(), Some(false)); |
||||
assert_eq!( |
||||
user_record.get("password_hash").unwrap().as_str(), |
||||
Some("fce798e0804dfb217f929bdba26745024f37f6b6ba7406f3775176e20dd5089d") |
||||
); |
||||
|
||||
let groups_arrays = user_record.get("groups").unwrap().as_array().unwrap(); |
||||
assert_eq!(groups_arrays.len(), 1); |
||||
assert_eq!(groups_arrays[0], "admin"); |
||||
} |
||||
|
||||
#[test] |
||||
fn file_json_get() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
// Test empty path
|
||||
let file = db.file("administration", "registered").unwrap(); |
||||
assert_eq!(file.root(), file.get("").unwrap()); |
||||
// Test complex path
|
||||
let expected = file.get("/76561198025127722/allowed_ips/1").unwrap(); |
||||
assert_eq!(expected.as_str().unwrap(), "192.168.0.100"); |
||||
// Test bad paths
|
||||
assert!(file.get("/777") == None); |
||||
assert!(file.get("/76561198025127722/allowed_ips/2") == None); |
||||
} |
||||
|
||||
#[test] |
||||
fn file_contains_check() { |
||||
let db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
let registered_file = db.file("administration", "registered").unwrap(); |
||||
let perks_file = db.file("game", "perks").unwrap(); |
||||
// These exist
|
||||
assert!(registered_file.contains("/76561198025127722/password_hash")); |
||||
assert!(registered_file.contains("/76561198044316328/groups/0")); |
||||
assert!(perks_file.contains("/76561198025127722/headshots")); |
||||
assert!(perks_file.contains("/76561198044316328")); |
||||
// These do not exist
|
||||
assert!(!registered_file.contains("/76561198025127722/password/")); |
||||
assert!(!registered_file.contains("/76561198044316328/groups/2")); |
||||
assert!(!perks_file.contains("/76561198025127722/assault_rifle_damage/9067")); |
||||
assert!(!perks_file.contains("/76561198044316328/headshots")); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_insert_success() -> Result<(), Box<dyn Error>> { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
let registered_file = db.file_mut("administration", "registered").unwrap(); |
||||
// Modify existing
|
||||
registered_file.insert("/76561198025127722/ip_lock", json!(false))?; |
||||
assert_eq!( |
||||
registered_file |
||||
.get("/76561198025127722/ip_lock") |
||||
.unwrap() |
||||
.to_string(), |
||||
"false" |
||||
); |
||||
registered_file.insert("/76561198044316328/password_hash", json!({"var":13524}))?; |
||||
assert_eq!( |
||||
registered_file |
||||
.get("/76561198044316328/password_hash") |
||||
.unwrap() |
||||
.to_string(), |
||||
r#"{"var":13524}"# |
||||
); |
||||
// Reset whole file
|
||||
registered_file.insert("", json!({}))?; |
||||
assert_eq!(registered_file.root().to_string(), "{}"); |
||||
// Add new values
|
||||
registered_file.insert("/new_var", json!([42, {"word":"life"}, null]))?; |
||||
assert_eq!( |
||||
registered_file.root().to_string(), |
||||
r#"{"new_var":[42,{"word":"life"},null]}"# |
||||
); |
||||
let general_file = db.file_mut("game", "general").unwrap(); |
||||
general_file.insert("/76561198025127722/achievements/5", json!("kf:bugged"))?; |
||||
assert_eq!( |
||||
general_file |
||||
.get("/76561198025127722/achievements") |
||||
.unwrap() |
||||
.to_string(), |
||||
r#"["kf:LabCleaner","kf:ChickenFarmer","scrn:playedscrn",null,null,"kf:bugged"]"# |
||||
); |
||||
Ok(()) |
||||
} |
||||
|
||||
#[test] |
||||
fn db_set_failure() { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
let file = db.file_mut("administration", "registered").unwrap(); |
||||
file.insert("/76561198025127722/dir/var", json!(null)) |
||||
.expect_err("Testing panic at trying to set a value in non-existing object/array."); |
||||
file.insert("/76561198044316328/groups/d", json!(null)) |
||||
.expect_err("Testing panic at trying to set a value at non-numeric index in an array."); |
||||
file.insert("/76561198044316328/groups/-1", json!(null)) |
||||
.expect_err("Testing panic at trying to set a value at negative index in an array."); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_remove_value() { |
||||
let mut db = Database::load(path::Path::new(TEST_DB_PATH)).expect(NO_DB_MESSAGE); |
||||
let file = db.file_mut("administration", "registered").unwrap(); |
||||
// Removing non-existent value
|
||||
assert_eq!(file.remove("/76561198025127722/something"), None); |
||||
// Remove simple value
|
||||
assert_eq!( |
||||
file.remove("/76561198025127722/password_hash").unwrap(), |
||||
json!("fce798e0804dfb217f929bdba26745024f37f6b6ba7406f3775176e20dd5089d") |
||||
); |
||||
assert!(!file.contains("/76561198025127722/password_hash")); |
||||
// Remove complex value (array)
|
||||
assert_eq!( |
||||
file.remove("/76561198044316328/groups").unwrap(), |
||||
json!(["admin"]) |
||||
); |
||||
assert!(!file.contains("/76561198044316328/groups/0")); |
||||
assert!(!file.contains("/76561198044316328/groups")); |
||||
// Remove array elements
|
||||
assert_eq!( |
||||
file.remove("/76561198025127722/allowed_ips/0").unwrap(), |
||||
json!("127.0.0.1") |
||||
); |
||||
assert!(file.contains("/76561198025127722/allowed_ips/0")); |
||||
assert!(!file.contains("/76561198025127722/allowed_ips/1")); |
||||
assert_eq!( |
||||
file.remove("/76561198025127722/allowed_ips/0").unwrap(), |
||||
json!("192.168.0.100") |
||||
); |
||||
assert!(file.contains("/76561198025127722/allowed_ips")); |
||||
assert!(!file.contains("/76561198025127722/allowed_ips/0")); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_save() { |
||||
let (path, _cleanup) = prepare_db_copy("db_save", false); |
||||
// Change something up and save
|
||||
let mut db = Database::load(path::Path::new(&path)).expect(NO_DB_MESSAGE); |
||||
db.remove_group("administration") |
||||
.expect(r#"Should be able to remove "administration" group"#); |
||||
db.save() |
||||
.expect("Should be able to save copy of the database."); |
||||
// Reload and check changes
|
||||
let db = Database::load(path::Path::new(&path)).expect(NO_DB_MESSAGE); |
||||
assert_eq!(db.group_names().len(), 1); |
||||
assert_eq!(db.group_names().get(0), Some(&"game".to_owned())); |
||||
assert_eq!(db.file_names_in("game").len(), 2); |
||||
assert!(db.contains_file("game", "general")); |
||||
assert!(db.contains_file("game", "perks")); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_change_path() { |
||||
let (path, _cleanup) = prepare_db_copy("db_change_path", true); |
||||
// Change something up and move
|
||||
let mut db = Database::load(path::Path::new(&path)).expect(NO_DB_MESSAGE); |
||||
db.remove_group("administration") |
||||
.expect(r#"Should be able to remove "administration" group"#); |
||||
db.file_mut("game", "perks") |
||||
.unwrap() |
||||
.insert("", json!({"var":7})) |
||||
.expect("Should be able to insert into root."); |
||||
db.change_path(path::Path::new(TEST_DB_MOVED_PATH)) |
||||
.expect("Should be able to change database's path."); |
||||
assert!(!path::Path::new(&path).exists()); |
||||
assert!(path::Path::new(TEST_DB_MOVED_PATH).exists()); |
||||
// Reload and check the changes
|
||||
let db = Database::load(path::Path::new(TEST_DB_MOVED_PATH)).expect(NO_DB_MESSAGE); |
||||
assert_eq!(db.group_names().len(), 1); |
||||
assert_eq!(db.group_names().get(0), Some(&"game".to_owned())); |
||||
assert_eq!(db.file_names_in("game").len(), 2); |
||||
assert!(db.contains_file("game", "general")); |
||||
assert!(db.contains_file("game", "perks")); |
||||
assert_eq!( |
||||
db.file("game", "perks").unwrap().root().to_string(), |
||||
r#"{"var":7}"#.to_owned() |
||||
); |
||||
} |
||||
|
||||
#[test] |
||||
fn db_erase() { |
||||
let (path, _cleanup) = prepare_db_copy("db_erase", false); |
||||
let db = Database::load(path::Path::new(&path)).expect(NO_DB_MESSAGE); |
||||
db.erase().expect("Should be able to erase data."); |
||||
assert!(!path::Path::new(&path).exists()); |
||||
} |
||||
@ -1,13 +1,16 @@
|
||||
use std::env; |
||||
use std::path::Path; |
||||
mod unreal_config; |
||||
mod database; |
||||
|
||||
use simplelog::{Config, LevelFilter, SimpleLogger}; |
||||
|
||||
fn main() { |
||||
let _ = SimpleLogger::init(LevelFilter::Info, Config::default()); |
||||
let args: Vec<String> = env::args().collect(); |
||||
let filename = &args[1]; |
||||
let config = unreal_config::load_file(Path::new(filename)); |
||||
match config { |
||||
Ok(config) => print!("{}", config), |
||||
_ => (), |
||||
} |
||||
let db = database::Database::load(Path::new(filename)); |
||||
/*match db {
|
||||
Ok(db) => print!("{}", db), |
||||
Err(error) => println!("OH NO: {}", error), |
||||
}*/ |
||||
} |
||||
|
||||
Loading…
Reference in new issue