-
Notifications
You must be signed in to change notification settings - Fork 6
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Showing
21 changed files
with
1,027 additions
and
411 deletions.
There are no files selected for viewing
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| use std::fs; | ||
| use std::path::PathBuf; | ||
| use std::sync::{Arc, Mutex}; | ||
| use std::time::SystemTime; | ||
|
|
||
| use crate::config::{Configuration, ConfigurationLoader}; | ||
| use crate::utils::text::VariableProvider; | ||
| use crate::DuckResult; | ||
|
|
||
| /////////////////////////////////////////////////////////// | ||
| // Configuration loader | ||
|
|
||
| #[derive(Clone)] | ||
| pub struct JsonConfigurationLoader<'a> { | ||
| path: PathBuf, | ||
| reader: &'a dyn FileReader, | ||
| modified: Arc<Mutex<u64>>, | ||
| } | ||
|
|
||
| impl<'a> JsonConfigurationLoader<'a> { | ||
| pub fn create(path: PathBuf) -> Self { | ||
| JsonConfigurationLoader::new(path, &DefaultFileReader {}) | ||
| } | ||
|
|
||
| fn new(path: PathBuf, reader: &'a dyn FileReader) -> Self { | ||
| JsonConfigurationLoader { | ||
| path, | ||
| reader, | ||
| modified: Arc::new(Mutex::new(0)), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<'a> ConfigurationLoader for JsonConfigurationLoader<'a> { | ||
| fn exist(&self) -> bool { | ||
| self.path.exists() | ||
| } | ||
|
|
||
| fn has_changed(&self) -> DuckResult<bool> { | ||
| let modified = self.reader.modified(&self.path)?; | ||
| if *self.modified.lock().unwrap() != modified { | ||
| return Ok(true); | ||
| } | ||
| Ok(false) | ||
| } | ||
|
|
||
| fn load(&self, variables: &dyn VariableProvider) -> DuckResult<Configuration> { | ||
| // Read the configuration and deserialize it | ||
| let json = self.reader.read_to_string(&self.path)?; | ||
| let config: Configuration = Configuration::from_json(variables, json)?; | ||
| // Update the modified time to the current one. | ||
| let modified = self.reader.modified(&self.path)?; | ||
| *self.modified.lock().unwrap() = modified; | ||
| Ok(config) | ||
| } | ||
| } | ||
|
|
||
| /////////////////////////////////////////////////////////// | ||
| // File reader | ||
|
|
||
| trait FileReader: Send + Sync { | ||
| /// Returns the content of the file as a string | ||
| fn read_to_string(&self, path: &PathBuf) -> DuckResult<String>; | ||
| /// Gets the modified time as Epoch time | ||
| fn modified(&self, path: &PathBuf) -> DuckResult<u64>; | ||
| } | ||
|
|
||
| struct DefaultFileReader {} | ||
| impl FileReader for DefaultFileReader { | ||
| fn read_to_string(&self, path: &PathBuf) -> DuckResult<String> { | ||
| Ok(fs::read_to_string(path)?) | ||
| } | ||
|
|
||
| fn modified(&self, path: &PathBuf) -> DuckResult<u64> { | ||
| Ok(fs::metadata(path)? | ||
| .modified()? | ||
| .duration_since(SystemTime::UNIX_EPOCH)? | ||
| .as_secs()) | ||
| } | ||
| } | ||
|
|
||
| /////////////////////////////////////////////////////////// | ||
| // Tests | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use super::*; | ||
| use crate::utils::text::TestVariableProvider; | ||
|
|
||
| struct FakeFileReader { | ||
| json: String, | ||
| modified: Arc<Mutex<u64>>, | ||
| } | ||
|
|
||
| impl FakeFileReader { | ||
| fn new<T: Into<String>>(json: T, modified: u64) -> Self { | ||
| Self { | ||
| json: json.into(), | ||
| modified: Arc::new(Mutex::new(modified)), | ||
| } | ||
| } | ||
|
|
||
| pub fn inc_modified(&self) { | ||
| let mut modified = self.modified.lock().unwrap(); | ||
| *modified = *modified + 1; | ||
| } | ||
| } | ||
|
|
||
| impl FileReader for FakeFileReader { | ||
| fn read_to_string(&self, _path: &PathBuf) -> DuckResult<String> { | ||
| Ok(self.json.clone()) | ||
| } | ||
|
|
||
| fn modified(&self, _path: &PathBuf) -> DuckResult<u64> { | ||
| let modified = self.modified.lock().unwrap(); | ||
| Ok(*modified) | ||
| } | ||
| } | ||
|
|
||
| #[test] | ||
| fn should_load_expected_configuration() { | ||
| // Given | ||
| let path = PathBuf::from("config.json"); | ||
| let reader = FakeFileReader::new(include_str!("test_data/config.json"), 1583092970); | ||
| let config = JsonConfigurationLoader::new(path, &reader); | ||
| let variables = TestVariableProvider::new(); | ||
|
|
||
| // When | ||
| let config = config.load(&variables).unwrap(); | ||
|
|
||
| // Then | ||
| assert_eq!(99, config.interval); | ||
| assert_eq!("Duck test server", config.title); | ||
| } | ||
|
|
||
| #[test] | ||
| fn should_indicate_if_configuration_has_not_changed_since_read() { | ||
| // Given | ||
| let path = PathBuf::from("config.json"); | ||
| let reader = FakeFileReader::new(include_str!("test_data/config.json"), 1583092970); | ||
| let handle = JsonConfigurationLoader::new(path, &reader); | ||
| let variables = TestVariableProvider::new(); | ||
|
|
||
| // When | ||
| handle.load(&variables).unwrap(); | ||
| let has_changed = handle.has_changed().unwrap(); | ||
|
|
||
| // Then | ||
| assert!(!has_changed); | ||
| } | ||
|
|
||
| #[test] | ||
| fn should_indicate_if_configuration_changed_since_read() { | ||
| // Given | ||
| let path = PathBuf::from("config.json"); | ||
| let reader = FakeFileReader::new(include_str!("test_data/config.json"), 1583092970); | ||
| let handle = JsonConfigurationLoader::new(path, &reader); | ||
| let variables = TestVariableProvider::new(); | ||
|
|
||
| // When | ||
| handle.load(&variables).unwrap(); | ||
| reader.inc_modified(); | ||
| let has_changed = handle.has_changed().unwrap(); | ||
|
|
||
| // Then | ||
| assert!(has_changed); | ||
| } | ||
| } |
Oops, something went wrong.