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use std::fs::{File, OpenOptions, create_dir};
use std::path::Path;
use log::*;
use simplelog::*;
use chrono::prelude::*;
pub fn initialize() {
let file = get_log_file();
let log_level_on_terminal = super::app_config("log_level_on_terminal");
let log_level_on_write = super::app_config("log_level_on_write");
let mut multiple = vec![];
match TermLogger::new(filter(&log_level_on_terminal), Config::default(), TerminalMode::Mixed) {
Some(logger) => multiple.push(logger as Box<dyn SharedLogger>),
None => multiple.push(SimpleLogger::new(filter(&log_level_on_terminal), Config::default())),
}
let write_logger = WriteLogger::new(filter(&log_level_on_write), Config::default(), file);
multiple.push(write_logger);
CombinedLogger::init(multiple).unwrap();
}
pub fn filter(level: &String) -> LevelFilter {
match level.as_str() {
"trace" => LevelFilter::Trace,
"debug" => LevelFilter::Debug,
"info" => LevelFilter::Info,
"warn" => LevelFilter::Warn,
"error" => LevelFilter::Error,
_ => LevelFilter::Warn
}
}
fn get_log_file() -> File {
let folder = super::app_config("log_folder");
create_log_dir(&folder);
let filename = super::app_config("log_filename_prefix");
let today: String = Local::today().format("%Y-%m-%d").to_string();
let path_name = folder.to_owned() + &"/".to_string() + &filename + &today + ".log";
let path = Path::new(&path_name);
let file = OpenOptions::new().append(true).create(true).open(&path).unwrap_or_else( |error| {
error!("problem in opening file: {:?}", error);
panic!("problem in opening file: {:?}", error);
});
file
}
fn create_log_dir(folder: &String) -> bool {
if Path::new(&folder).is_dir() {
debug!("folder exists...{:?}, no need to create it", &folder);
return false;
}
debug!(" {} folder does NOT exist", &folder);
create_dir(&folder).unwrap();
true
}