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mod test_utils;
#[cfg(feature = "compress")]
mod d {
use cond_sync::{CondSync, Other};
use flexi_logger::{
Cleanup, Criterion, DeferredNow, Duplicate, FileSpec, LogSpecification, Logger, Naming,
WriteMode, TS_DASHES_BLANK_COLONS_DOT_BLANK,
};
use glob::glob;
use log::*;
use std::{ops::Add, thread::JoinHandle};
const NO_OF_THREADS: usize = 5;
const NO_OF_LOGLINES_PER_THREAD: usize = 20_000;
const ROTATE_OVER_SIZE: u64 = 600_000;
const NO_OF_LOG_FILES: usize = 2;
const NO_OF_GZ_FILES: usize = 5;
// we use a special log line format that starts with a special string
// so that it is easier to verify that all log lines are written correctly
#[test]
fn multi_threaded() {
let directory = super::test_utils::dir();
{
let _stopwatch = super::test_utils::Stopwatch::default();
let logger = Logger::try_with_str("debug")
.unwrap()
.log_to_file(FileSpec::default().directory(&directory))
.write_mode(WriteMode::BufferAndFlushWith(
10 * 1024,
std::time::Duration::from_millis(600),
))
.format(test_format)
.duplicate_to_stderr(Duplicate::Info)
.rotate(
Criterion::Size(ROTATE_OVER_SIZE),
Naming::Timestamps,
Cleanup::KeepLogAndCompressedFiles(NO_OF_LOG_FILES, NO_OF_GZ_FILES),
)
.cleanup_in_background_thread(false)
.use_utc()
.start()
.unwrap_or_else(|e| panic!("Logger initialization failed with {e}"));
info!(
"create a huge number of log lines with a considerable number of threads, \
verify the log"
);
let cond_sync = CondSync::new(0_usize);
let worker_handles = start_worker_threads(NO_OF_THREADS, &cond_sync);
cond_sync
.wait_until(|value| *value == NO_OF_THREADS)
.unwrap();
logger.set_new_spec(LogSpecification::parse("trace").unwrap());
join_all_workers(worker_handles);
} // drop stopwatch and logger
verify_logs(&directory.display().to_string());
}
// Starts given number of worker threads and lets each execute `do_work`
fn start_worker_threads(
no_of_workers: usize,
cond_sync: &CondSync<usize>,
) -> Vec<JoinHandle<u8>> {
let mut worker_handles: Vec<JoinHandle<u8>> = Vec::with_capacity(no_of_workers);
trace!("Starting {} worker threads", no_of_workers);
for thread_number in 0..no_of_workers {
trace!("Starting thread {}", thread_number);
let cond_sync_t = cond_sync.clone();
worker_handles.push(
std::thread::Builder::new()
.name(thread_number.to_string())
.spawn(move || {
do_work(thread_number, cond_sync_t);
0
})
.unwrap(),
);
}
trace!("All {} worker threads started.", worker_handles.len());
worker_handles
}
fn do_work(thread_number: usize, cond_sync: CondSync<usize>) {
trace!("({}) Thread started working", thread_number);
trace!("ERROR_IF_PRINTED");
cond_sync
.modify_and_notify(|value| *value += 1, Other::One)
.unwrap();
for idx in 0..NO_OF_LOGLINES_PER_THREAD {
debug!("({}) writing out line number {}", thread_number, idx);
}
trace!("MUST_BE_PRINTED");
}
fn join_all_workers(worker_handles: Vec<JoinHandle<u8>>) {
for worker_handle in worker_handles {
worker_handle
.join()
.unwrap_or_else(|e| panic!("Joining worker thread failed: {e:?}"));
}
trace!("All worker threads joined.");
}
pub fn test_format(
w: &mut dyn std::io::Write,
now: &mut DeferredNow,
record: &Record,
) -> std::io::Result<()> {
write!(
w,
"XXXXX [{}] T[{:?}] {} [{}:{}] {}",
now.format(TS_DASHES_BLANK_COLONS_DOT_BLANK),
std::thread::current().name().unwrap_or("<unnamed>"),
record.level(),
record.file().unwrap_or("<unnamed>"),
record.line().unwrap_or(0),
&record.args()
)
}
fn verify_logs(directory: &str) {
// Since the cleanup deleted log files, we can only check that the correct number of
// log files and compressed files exist
let basename = String::from(directory).add("/").add(
&std::path::Path::new(&std::env::args().next().unwrap())
.file_stem().unwrap(/*cannot fail*/)
.to_string_lossy(),
);
let fn_pattern = String::with_capacity(180)
.add(&basename)
.add("_r[0-9][0-9]*.");
let no_of_log_files = glob(&fn_pattern.clone().add("log"))
.unwrap()
.map(Result::unwrap)
.count();
let no_of_gz_files = glob(&fn_pattern.add("gz"))
.unwrap()
.map(Result::unwrap)
.count();
assert_eq!(no_of_log_files, NO_OF_LOG_FILES);
assert_eq!(no_of_gz_files, NO_OF_GZ_FILES);
info!("Found correct number of log and compressed files");
}
}
|
