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mod test_utils;
use flexi_logger::{FileSpec, Logger, WriteMode};
use log::*;
use std::path::Path;
#[cfg(feature = "async")]
const COUNT: u8 = 3;
#[cfg(not(feature = "async"))]
const COUNT: u8 = 2;
#[test]
fn test_external_rename() {
if let Some(value) = test_utils::dispatch(COUNT) {
work(value)
}
}
fn work(value: u8) {
let mut logger = Logger::try_with_str("info").unwrap();
let file_spec = FileSpec::default()
.directory(self::test_utils::dir())
.suppress_timestamp()
.basename("myprog");
let file_path = file_spec.as_pathbuf(None);
logger = logger.log_to_file(file_spec);
// ToDo: test with all write modes, with and without rotation
match value {
0 => {
logger = logger.write_mode(WriteMode::Direct);
}
1 => {
logger = logger.write_mode(WriteMode::BufferAndFlush);
}
#[cfg(feature = "async")]
2 => {
logger = logger.write_mode(WriteMode::Async);
}
COUNT..=u8::MAX => {
unreachable!("dtrtgfg")
}
};
// create the "moved" folder
let mut mv_dir = file_path.clone();
mv_dir.pop();
mv_dir.push("moved");
std::fs::create_dir_all(mv_dir.clone()).unwrap();
let target_filespec = FileSpec::try_from(&file_path)
.unwrap()
.directory(mv_dir.clone());
{
let logger = logger
.start()
.unwrap_or_else(|e| panic!("Logger initialization failed with {e}"));
// write some log lines to initialize the file
info!("XXX 1 AAA");
info!("XXX 2 AAA");
info!("XXX 3 AAA");
// write log lines in a slow loop, and rename the log file intermittently
for i in 0..100 {
if i % 25 == 20 {
let target_path = target_filespec.as_pathbuf(Some(&i.to_string()));
match std::fs::rename(file_path.clone(), target_path.clone()) {
Ok(()) => {
println!("Renamed the log file {:?} to {:?}", file_path, &target_path);
logger.reopen_output().unwrap();
}
Err(e) => {
panic!(
"Cannot rename log file {file_path:?} to {target_path:?} due to {e:?}",
)
}
}
}
std::thread::sleep(std::time::Duration::from_millis(10));
info!("YYY {} AAA", i);
}
}
// verify that all log lines are written and are found in moved files
let mut files = 1;
let mut sum = count_lines(&file_path);
for entry in std::fs::read_dir(mv_dir).unwrap() {
let entry = entry.unwrap();
let lines = count_lines(&entry.path());
sum += lines;
if lines > 0 {
files += 1;
}
}
assert_eq!(files, 5, "wrong number of files");
assert_eq!(sum, 103, "wrong number of log lines");
}
fn count_lines(path: &Path) -> usize {
match std::fs::read_to_string(path) {
Ok(s) => s.lines().filter(|line| line.contains("AAA")).count(),
Err(_e) => 0,
}
}
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