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feat(logger): delete old logs & avoid more dup logs (#4348)

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* feat(logger): delete old logs & avoid more dup logs

* `match` -> `let else` where possible
This commit is contained in:
David Knaack 2023-01-04 09:22:02 +01:00 committed by GitHub
parent 908ce9e50f
commit e47ea57db2
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4 changed files with 342 additions and 60 deletions
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2
Cargo.toml
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@ -23,7 +23,7 @@ license = "ISC"
readme = "README.md"
repository = "https://github.com/starship/starship"
# Note: MSRV is only intended as a hint, and only the latest version is officially supported in starship.
rust-version = "1.64"
rust-version = "1.65"
description = """
The minimal, blazing-fast, and infinitely customizable prompt for any shell! ☄🌌️
"""

385
src/logger.rs
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@ -3,48 +3,109 @@ use log::{Level, LevelFilter, Metadata, Record};
use nu_ansi_term::Color;
use once_cell::sync::OnceCell;
use std::{
cmp,
collections::HashSet,
env,
fs::{self, File, OpenOptions},
io::Write,
path::PathBuf,
sync::Mutex,
path::{Path, PathBuf},
sync::{Mutex, RwLock},
};
pub struct StarshipLogger {
log_file: OnceCell<Mutex<File>>,
log_file_path: PathBuf,
log_file_content: HashSet<String>,
log_file_content: RwLock<HashSet<String>>,
log_level: Level,
}
/// Returns the path to the log directory.
pub fn get_log_dir() -> PathBuf {
env::var_os("STARSHIP_CACHE")
.map(PathBuf::from)
.unwrap_or_else(|| {
utils::home_dir()
.map(|home| home.join(".cache"))
.or_else(dirs_next::cache_dir)
.unwrap_or_else(std::env::temp_dir)
.join("starship")
})
}
/// Deletes all log files in the log directory that were modified more than 24 hours ago.
pub fn cleanup_log_files<P: AsRef<Path>>(path: P) {
let log_dir = path.as_ref();
let log_files = match fs::read_dir(log_dir) {
Ok(log_files) => log_files,
// Avoid noisily handling errors in this cleanup function.
Err(_) => return,
};
for file in log_files {
// Skip files that can't be read.
let Ok (file) = file else {
continue;
};
// Avoid deleting files that don't look like log files.
if !file
.path()
.file_name()
.unwrap_or_default()
.to_str()
.unwrap_or_default()
.starts_with("session_")
|| file.path().extension() != Some("log".as_ref())
{
continue;
}
// Read metadata to check file age.
let Ok(metadata) = file.metadata() else {
continue;
};
// Avoid handling anything that isn't a file.
if !metadata.is_file() {
continue;
}
// Get the file's modification time.
let Ok(modified) = metadata.modified() else {
continue;
};
// Delete the file if it hasn't changed in 24 hours.
if modified.elapsed().unwrap_or_default().as_secs() > 60 * 60 * 24 {
let _ = fs::remove_file(file.path());
}
}
}
impl Default for StarshipLogger {
fn default() -> Self {
let log_dir = env::var_os("STARSHIP_CACHE")
.map(PathBuf::from)
.unwrap_or_else(|| {
utils::home_dir()
.expect("Unable to find home directory")
.join(".cache/starship")
});
let log_dir = get_log_dir();
fs::create_dir_all(&log_dir)
.unwrap_or_else(|err| panic!("Unable to create log dir {log_dir:?}: {err:?}!"));
if let Err(err) = fs::create_dir_all(&log_dir) {
eprintln!("Unable to create log dir {log_dir:?}: {err:?}!")
};
let session_log_file = log_dir.join(format!(
"session_{}.log",
env::var("STARSHIP_SESSION_KEY").unwrap_or_default()
));
Self {
log_file_content: fs::read_to_string(&session_log_file)
.unwrap_or_default()
.lines()
.map(std::string::ToString::to_string)
.collect(),
log_file_content: RwLock::new(
fs::read_to_string(&session_log_file)
.unwrap_or_default()
.lines()
.map(std::string::ToString::to_string)
.collect(),
),
log_file: OnceCell::new(),
log_file_path: session_log_file,
log_level: env::var("STARSHIP_LOG")
.map(|level| match level.to_lowercase().as_str() {
.map(|level| match level.to_ascii_lowercase().as_str() {
"trace" => Level::Trace,
"debug" => Level::Debug,
"info" => Level::Info,
@ -66,6 +127,12 @@ impl StarshipLogger {
/// Override the log level path
/// This won't change anything if a log file was already opened
pub fn set_log_file_path(&mut self, path: PathBuf) {
let contents = fs::read_to_string(&path)
.unwrap_or_default()
.lines()
.map(std::string::ToString::to_string)
.collect();
self.log_file_content = RwLock::new(contents);
self.log_file_path = path;
}
}
@ -76,6 +143,11 @@ impl log::Log for StarshipLogger {
}
fn log(&self, record: &Record) {
// Early return if the log level is not enabled
if !self.enabled(record.metadata()) {
return;
}
let to_print = format!(
"[{}] - ({}): {}",
record.level(),
@ -83,51 +155,84 @@ impl log::Log for StarshipLogger {
record.args()
);
if record.metadata().level() <= Level::Warn {
self.log_file
.get_or_try_init(|| {
let m = Mutex::new(
OpenOptions::new()
.create(true)
.append(true)
.open(&self.log_file_path)?,
);
Ok(m)
})
.unwrap_or_else(|err: std::io::Error| {
panic!(
"Unable to open session log file {:?}: {err:?}!",
self.log_file_path
)
})
.lock()
.map(|mut file| writeln!(file, "{to_print}"))
.expect("Log file writer mutex was poisoned!")
.expect("Unable to write to the log file!");
// A log message is only printed or written to the log file,
// if it's not already in the log file or has been printed in this session.
// To help with debugging, duplicate detection only runs if the log level is warn or lower
let is_debug = record.level() > Level::Warn;
let is_duplicate = {
!is_debug
&& self
.log_file_content
.read()
.map(|c| c.contains(to_print.as_str()))
.unwrap_or(false)
};
if is_duplicate {
return;
}
if self.enabled(record.metadata()) && !self.log_file_content.contains(to_print.as_str()) {
eprintln!(
"[{}] - ({}): {}",
match record.level() {
Level::Trace => Color::Blue.dimmed().paint(format!("{}", record.level())),
Level::Debug => Color::Cyan.paint(format!("{}", record.level())),
Level::Info => Color::White.paint(format!("{}", record.level())),
Level::Warn => Color::Yellow.paint(format!("{}", record.level())),
Level::Error => Color::Red.paint(format!("{}", record.level())),
},
record.module_path().unwrap_or_default(),
record.args()
);
// Write warning messages to the log file
// If log level is error, only write error messages to the log file
if record.level() <= cmp::min(Level::Warn, self.log_level) {
let log_file = match self.log_file.get_or_try_init(|| {
OpenOptions::new()
.create(true)
.append(true)
.open(&self.log_file_path)
.map(Mutex::new)
}) {
Ok(log_file) => log_file,
Err(err) => {
eprintln!(
"Unable to open session log file {:?}: {err:?}!",
self.log_file_path
);
return;
}
};
let mut file_handle = match log_file.lock() {
Ok(file_handle) => file_handle,
Err(err) => {
eprintln!("Log file writer mutex was poisoned! {err:?}",);
return;
}
};
if let Err(err) = writeln!(file_handle, "{to_print}") {
eprintln!("Unable to write to session log file {err:?}!",);
};
}
// Print messages to stderr
eprintln!(
"[{}] - ({}): {}",
match record.level() {
Level::Trace => Color::Blue.dimmed().paint(format!("{}", record.level())),
Level::Debug => Color::Cyan.paint(format!("{}", record.level())),
Level::Info => Color::White.paint(format!("{}", record.level())),
Level::Warn => Color::Yellow.paint(format!("{}", record.level())),
Level::Error => Color::Red.paint(format!("{}", record.level())),
},
record.module_path().unwrap_or_default(),
record.args()
);
// Add to duplicate detection set
if let Ok(mut c) = self.log_file_content.write() {
c.insert(to_print);
}
}
fn flush(&self) {
if let Some(m) = self.log_file.get() {
m.lock()
.map(|mut writer| writer.flush())
.expect("Log file writer mutex was poisoned!")
.expect("Unable to flush the log file!");
let result = match m.lock() {
Ok(mut file) => file.flush(),
Err(err) => return eprintln!("Log file writer mutex was poisoned: {err:?}"),
};
if let Err(err) = result {
eprintln!("Unable to flush the log file: {err:?}");
}
}
}
}
@ -136,3 +241,171 @@ pub fn init() {
log::set_boxed_logger(Box::<StarshipLogger>::default()).unwrap();
log::set_max_level(LevelFilter::Trace);
}
#[cfg(test)]
mod test {
use super::*;
use crate::utils::read_file;
use log::Log;
use std::io;
#[test]
fn test_log_to_file() -> io::Result<()> {
let log_dir = tempfile::tempdir()?;
let log_file = log_dir.path().join("test.log");
let mut logger = StarshipLogger::default();
logger.set_log_file_path(log_file.clone());
logger.set_log_level(Level::Warn);
// Load at all log levels
logger.log(
&Record::builder()
.level(Level::Error)
.args(format_args!("error"))
.build(),
);
logger.log(
&Record::builder()
.level(Level::Warn)
.args(format_args!("warn"))
.build(),
);
logger.log(
&Record::builder()
.level(Level::Info)
.args(format_args!("info"))
.build(),
);
logger.log(
&Record::builder()
.level(Level::Debug)
.args(format_args!("debug"))
.build(),
);
logger.log(
&Record::builder()
.level(Level::Trace)
.args(format_args!("trace"))
.build(),
);
// Print duplicate messages
logger.log(
&Record::builder()
.level(Level::Warn)
.args(format_args!("warn"))
.build(),
);
logger.log(
&Record::builder()
.level(Level::Error)
.args(format_args!("error"))
.build(),
);
logger.flush();
drop(logger);
let content = read_file(log_file)?;
assert_eq!(content, "[ERROR] - (): error\n[WARN] - (): warn\n");
log_dir.close()
}
#[test]
fn test_dedup_from_file() -> io::Result<()> {
let log_dir = tempfile::tempdir()?;
let log_file = log_dir.path().join("test.log");
{
let mut file = File::create(&log_file)?;
file.write_all(b"[WARN] - (): warn\n")?;
file.sync_all()?;
}
let mut logger = StarshipLogger::default();
logger.set_log_file_path(log_file.clone());
logger.set_log_level(Level::Warn);
// This message should not be printed or written to the log file
logger.log(
&Record::builder()
.level(Level::Warn)
.args(format_args!("warn"))
.build(),
);
// This message should be printed and written to the log file
logger.log(
&Record::builder()
.level(Level::Warn)
.args(format_args!("warn2"))
.build(),
);
logger.flush();
drop(logger);
let content = read_file(log_file)?;
assert_eq!(content, "[WARN] - (): warn\n[WARN] - (): warn2\n");
log_dir.close()
}
#[test]
#[cfg(unix)]
fn test_cleanup() -> io::Result<()> {
use nix::sys::{stat::utimes, time::TimeVal};
use std::fs::File;
let log_dir = tempfile::tempdir()?;
// Should not be deleted
let non_matching_file = log_dir.path().join("non-matching.log");
let non_matching_file2 = log_dir.path().join("session_.exe");
let new_file = log_dir.path().join("session_new.log");
let directory = log_dir.path().join("session_dir.log");
// Should be deleted
let old_file = log_dir.path().join("session_old.log");
for file in &[
&non_matching_file,
&non_matching_file2,
&new_file,
&old_file,
] {
File::create(file)?;
}
fs::create_dir(&directory)?;
// Set all files except the new file to be older than 24 hours
for file in &[
&non_matching_file,
&non_matching_file2,
&old_file,
&directory,
] {
utimes(file.as_path(), &TimeVal::new(0, 0), &TimeVal::new(0, 0))?;
if let Ok(f) = File::open(file) {
f.sync_all()?;
}
}
cleanup_log_files(log_dir.path());
for file in &[
&non_matching_file,
&non_matching_file2,
&new_file,
&directory,
] {
assert!(file.exists(), "File {file:?} should exist");
}
assert!(!old_file.exists(), "File {old_file:?} should not exist");
log_dir.close()
}
}

6
src/main.rs
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@ -118,6 +118,12 @@ fn main() {
logger::init();
init_global_threadpool();
// Delete old log files
rayon::spawn(|| {
let log_dir = logger::get_log_dir();
logger::cleanup_log_files(log_dir);
});
let args = match Cli::try_parse() {
Ok(args) => args,
Err(e) => {

9
src/test/mod.rs
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@ -10,6 +10,7 @@ use once_cell::sync::Lazy;
use std::fs;
use std::io;
use std::path::{Path, PathBuf};
use std::sync::Once;
use tempfile::TempDir;
static FIXTURE_DIR: Lazy<PathBuf> =
@ -18,7 +19,9 @@ static FIXTURE_DIR: Lazy<PathBuf> =
static GIT_FIXTURE: Lazy<PathBuf> = Lazy::new(|| FIXTURE_DIR.join("git-repo.bundle"));
static HG_FIXTURE: Lazy<PathBuf> = Lazy::new(|| FIXTURE_DIR.join("hg-repo.bundle"));
static LOGGER: Lazy<()> = Lazy::new(|| {
static LOGGER: Once = Once::new();
fn init_logger() {
let mut logger = StarshipLogger::default();
// Don't log to files during tests
@ -31,7 +34,7 @@ static LOGGER: Lazy<()> = Lazy::new(|| {
logger.set_log_file_path(nul);
log::set_boxed_logger(Box::new(logger)).unwrap();
});
}
pub fn default_context() -> Context<'static> {
let mut context = Context::new_with_shell_and_path(
@ -55,7 +58,7 @@ impl<'a> ModuleRenderer<'a> {
/// Creates a new `ModuleRenderer`
pub fn new(name: &'a str) -> Self {
// Start logger
Lazy::force(&LOGGER);
LOGGER.call_once(init_logger);
let context = default_context();