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|
mod test_utils;
use flexi_logger::{Age, Cleanup, Criterion, Duplicate, FileSpec, Logger, Naming};
use glob::glob;
use log::*;
use std::fs::File;
use std::io::{BufRead, BufReader};
use std::ops::Add;
use std::path::Path;
#[test]
fn test_age_or_size() {
let directory = test_utils::dir();
test_utils::wait_for_start_of_second();
Logger::try_with_str("trace")
.unwrap()
.format_for_files(flexi_logger::detailed_format)
.log_to_file(FileSpec::default().directory(&directory))
.duplicate_to_stderr(Duplicate::Info)
.rotate(
Criterion::AgeOrSize(Age::Second, 265),
Naming::Numbers,
Cleanup::Never,
)
.start()
.unwrap_or_else(|e| panic!("Logger initialization failed with {e}"));
// info!("test correct rotation by age or size");
write_log_lines();
verify_logs(&directory);
}
fn write_log_lines() {
trace!("{}", 'A');
// wait to enforce a rotation
std::thread::sleep(std::time::Duration::from_millis(1100));
// Fill first three files by size
trace!("{}", 'a');
trace!("{}", 'b');
trace!("{}", 'c');
trace!("{}", 'd');
trace!("{}", 'e');
trace!("{}", 'f');
trace!("{}", 'g');
trace!("{}", 'h');
trace!("{}", 'i');
trace!("{}", 'j');
// now wait to enforce a rotation with a smaller file
std::thread::sleep(std::time::Duration::from_secs(2));
trace!("{}", 'k');
// now wait to enforce a rotation with a smaller file
std::thread::sleep(std::time::Duration::from_secs(2));
trace!("{}", 'l');
// then again fill a file by size
trace!("{}", 'm');
trace!("{}", 'n');
// and do the final rotation:
trace!("{}", 'o');
}
fn verify_logs(directory: &Path) {
let mut error_detected = false;
let expected_line_counts = [1, 3, 3, 3, 1, 1, 3, 1];
// read all files
let pattern = directory.display().to_string().add("/*");
let globresults = match glob(&pattern) {
Err(e) => panic!("Is this ({pattern}) really a directory? Listing failed with {e}",),
Ok(globresults) => globresults,
};
let mut no_of_log_files = 0;
let mut total_line_count = 0_usize;
for (index, globresult) in globresults.into_iter().enumerate() {
let mut line_count = 0_usize;
let pathbuf = globresult.unwrap_or_else(|e| panic!("Ups - error occured: {e}"));
let f = File::open(&pathbuf)
.unwrap_or_else(|e| panic!("Cannot open file {pathbuf:?} due to {e}"));
no_of_log_files += 1;
let mut reader = BufReader::new(f);
let mut buffer = String::new();
while reader.read_line(&mut buffer).unwrap() > 0 {
line_count += 1;
}
println!("file {pathbuf:?}:\n{buffer}");
if line_count != expected_line_counts[index] {
error_detected = true;
}
total_line_count += line_count;
}
if no_of_log_files != 8 {
println!("wrong file count: {no_of_log_files} instead of 8");
error_detected = true;
}
if total_line_count != 16 {
println!("wrong line count: {total_line_count} instead of 16");
error_detected = true;
};
assert!(!error_detected);
}
|
