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lightweight and efficient rust structured log library with support for log levels, file segmentation, compressed archiving

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### tklog is a high-performance structured logging library for Rust [[中文]](https://github.com/donnie4w/tklog/blob/main/README_ZH.md "[中文]")

##### `Easy to use`, `Efficient`, `Structured`, `Console logging`, `File logging`, `File rotation`, `File compression`, `Synchronous logging`, `Asynchronous logging`

##### Features

- Functionality: Console logging, File logging, Synchronous logging, Asynchronous logging
- Flexible log level configuration: Supports `trace`, `debug`, `info`, `warn`, `error`, and `fatal` log levels.
- Customizable output formatting: Adjust the log output format, including log level tags, time format, file locations, etc.
- Log file rotation by time: Supports rotating log files by hour, day, or month.
- Log file rotation by size: Automatically rotates log files based on file size.
- Hybrid time and size-based log rotation: Supports mixed log rotation based on both time and size.
- File count management: Allows setting a maximum number of backup log files and automatically deletes old logs to avoid excessive file accumulation.
- File compression: Supports compressing archived log files.
- Supports the official logging library’s standard API.
- Supports independent log parameters for individual modules.
- Supports independent log parameters for different log levels.
- Supports setting the log level using the environment variable `RUST_LOG`.

---

### [official website](https://tlnet.top/tklogen "official website")

### [Github](https://github.com/donnie4w/tklog "Github")

### [crates.io](https://crates.io/crates/tklog "crates.io")

------------

## Simple Usage Description

##### Use tklog

```rust
[dependencies]
tklog = "0.3.0"   #   "0.x.x" current version
```

The simplest way to use tklog involves direct macro calls:

```rust
use tklog::{trace, debug, error, fatal, info, warn};
fn testlog() {
    trace!("trace>>>>", "aaaaaaaaa", 1, 2, 3, 4);
    debug!("debug>>>>", "bbbbbbbbb", 1, 2, 3, 5);
    info!("info>>>>", "ccccccccc", 1, 2, 3, 5);
    warn!("warn>>>>", "dddddddddd", 1, 2, 3, 6);
    error!("error>>>>", "eeeeeeee", 1, 2, 3, 7);
    fatal!("fatal>>>>", "ffffffff", 1, 2, 3, 8);
}
```
###### By default, it will print console log, not files. Execution Result:

```
[TRACE] 2024-05-26 11:47:22 testlog.rs 27:trace>>>>,aaaaaaaaa,1,2,3,4
[DEBUG] 2024-05-26 11:47:22 testlog.rs 28:debug>>>>,bbbbbbbbb,1,2,3,5
[INFO] 2024-05-26 11:47:22 testlog.rs 29:info>>>>,ccccccccc,1,2,3,5
[WARN] 2024-05-26 11:47:22 testlog.rs 30:warn>>>>,dddddddddd,1,2,3,6
[ERROR] 2024-05-26 11:47:22 testlog.rs 31:error>>>>,eeeeeeee,1,2,3,7
[FATAL] 2024-05-26 11:47:22 testlog.rs 32:fatal>>>>,ffffffff,1,2,3,8
```

###### For initialization and customization, tklog furnishes methods to configure options such as console output, log levels, formatting styles, cutting strategies, and custom formatters.

```rust
use tklog::{
    sync::Logger,LEVEL, LOG,
    Format, MODE,
};

fn log_init() {
    LOG.set_console(true)       // Enables console logging
        .set_level(LEVEL::Info)  // Sets the log level; default is Debug
        .set_format(Format::LevelFlag | Format::Time | Format::ShortFileName)  // Defines structured log output with chosen details
        .set_cutmode_by_size("tklogsize.txt", 1<<20, 10, true)  // Cuts logs by file size (1 MB), keeps 10 backups, compresses backups
        .set_formatter("{level}{time} {file}:{message}\n");   // Customizes log output format; default is "{level}{time} {file}:{message}"
}
```
This illustrates global, singleton-style logging setup. Additionally, tklog facilitates custom multi-instance logging configurations, useful in systems requiring distinct logging structures across different components.

------------

### Multi-Instance Logging

`tklog` also accommodates multiple instances for scenarios that require distinct logging configurations. Each instance can possess its unique settings for console output, log level, file rotation, and a custom formatter.

```rust
use tklog::{
    debugs, errors, fatals, infos,
    sync::Logger,LEVEL, LOG,
    traces, warns, Format, MODE,
};
fn testmutlilog() {
    let mut log = Logger::new();
    log.set_console(true)
        .set_level(LEVEL::Debug) //Set the log level to Debug
        .set_cutmode_by_time("tklogs.log", MODE::DAY, 10, true)   //Split log files daily, keep up to 10 backups, and compress them
        .set_formatter("{message} | {time} {file}{level}\n");  //Customize the log structure's output format and additional content
    let mut logger = Arc::clone(&Arc::new(Mutex::new(log)));
    let log = logger.borrow_mut();
    traces!(log, "traces>>>>", "AAAAAAAAA", 1, 2, 3, 4);
    debugs!(log, "debugs>>>>", "BBBBBBBBB", 1, 2, 3, 5);
    infos!(log, "infos>>>>", "CCCCCCCCC", 1, 2, 3, 5);
    warns!(log, "warns>>>>", "DDDDDDDDDD", 1, 2, 3, 6);
    errors!(log, "errors>>>>", "EEEEEEEE", 1, 2, 3, 7);
    fatals!(log, "fatals>>>>", "FFFFFFFF", 1, 2, 3, 8);
    thread::sleep(Duration::from_secs(1))
}
```

###### Execution Result

```
debugs>>>>,BBBBBBBBB,1,2,3,5 | 2024-05-26 14:13:25 testlog.rs 70[DEBUG]
infos>>>>,CCCCCCCCC,1,2,3,5 | 2024-05-26 14:13:25 testlog.rs 71[INFO]
warns>>>>,DDDDDDDDDD,1,2,3,6 | 2024-05-26 14:13:25 testlog.rs 72[WARN]
errors>>>>,EEEEEEEE,1,2,3,7 | 2024-05-26 14:13:25 testlog.rs 73[ERROR]
fatals>>>>,FFFFFFFF,1,2,3,8 | 2024-05-26 14:13:25 testlog.rs 74[FATAL]
```

###### Note: The structured log output above conforms to the format specified by "{message} | {time} {file}{level}\n". The formatter includes identifiers like {message}, {time}, {file}, {level}, and any additional text or separators outside these placeholders.

------------

## Detailed Usage Guide

#### 1. Log Levels: Trace < Debug < Info < Warn < Error < Fatal.

Example:
```rust
   LOG.set_level(LEVEL::Info) //Sets the log level to Info
```

#### 2. Console Logging: Enable or disable via `.set_console(bool)`.

```rust
   LOG.set_console(false) //Disables console logging (default is true)
```

#### 3. Log Formats:

```rust
Format::Nano ： No formatting
Format::Date  ： Outputs date (e.g., 2024-05-26)
Format::Time  ： Outputs time to seconds (e.g., 14:13:25)
Format::Microseconds ：Outputs time with microseconds (e.g., 18:09:17.462245)
Format::LongFileName ：Full file path with line number (e.g., tests/testlog.rs 25)
Format::ShortFileName ： Abbreviated file path with line number (e.g., testlog.rs 25)
Format::LevelFlag ： Log level marker (e.g., [Debug]).
```

For custom formats:

```rust
LOG.set_format(Format::LevelFlag | Format::Time | Format::ShortFileName)
```

#### 4. Custom Format Strings:

Default is "{level}{time} {file}:{message}\n".

-  `{level}`: Log level indicator, e.g., [Debug].

-  `{time}`: Logged timestamp.

-  `{file}`: Filename and line number.

- `{message}`: Log content.

######   Example:

```rust
   LOG.set_formatter("{message} | {time} {file}{level}\n")
```

Reminder: Text outside the `{level}`, `{time}`, `{file}`, and `{message}` tags is output verbatim, including delimiters, spaces, and newlines.

####  5. Time-Based Log File Rotation:

Modes: `MODE::HOUR`, `MODE::DAY`, `MODE::MONTH`.

Use `.set_cutmode_by_time()` with:
   - File path
   - Time mode
   - Maximum backup count
   - Compression option

######   Example:

```rust
   let mut log = Logger::new(); 
   log.set_cutmode_by_time("/usr/local/tklogs.log", MODE::DAY, 0, false);
```

This configures the log to be stored at `/usr/local/tklogs.log`, rotated daily, with no limit on backups, and without compressing daily logs.

**Backup Naming Conventions:**

- Daily: 
	- `tklogs_20240521.log`
	- `tklogs_20240522.log`
- Hourly: 
	- `tklogs_2024052110.log`
	- `tklogs_2024052211.log`
- Monthly:
	- `tklogs_202403.log`
	- `tklogs_202404.log`

#### 6. Size-Based Log File Rotation:

Utilize `.set_cutmode_by_size()` with the following parameters:

- File path
- Roll size
- Max backups
- Compress backups

######   Example:

```rust
let mut log = Logger::new(); 
log.set_cutmode_by_size("tklogs.log", 100<<20, 10, true);
```

Here, `tklogs.log` denotes the path, with files rolling at 100 MB each, retaining 10 backups, and compressing them.

**Backup File Naming Convention:**

```
tklogs_1.log.gz
tklogs_2.log.gz
tklogs_3.log.gz
```
#### 7. Split Log Files by Mixed Mode Based on Time and Size

##### Calling the `.set_cutmode_by_mixed()` Function, Parameters Include:

- **File Path**: The path to the log file.
- **Specified File Roll Size**: The size at which the log file should roll over.
- **Time Mode**: Defines the time-based rolling pattern (e.g., daily, hourly, monthly).
- **Maximum Number of Backup Log Files**: The maximum number of backup files to retain.
- **Whether to Compress Backup Log Files**: Boolean value indicating if the backup log files should be compressed.

**Example**

```rust
let mut log = Logger::new();
log.set_cutmode_by_mixed("/usr/local/tklogs.log", 1 << 30, MODE::DAY, 10, true);
```

##### Explanation: 
The backup file path is `/usr/local/tklogs.log`. The log file will roll over when it reaches 1GB (1<<30) in size. The rolling time mode is set to daily backups. The parameter `10` indicates that a maximum of 10 recent backup files will be retained. The parameter `true` indicates that backup log files will be compressed.

##### Backup File Naming Format:

- **Mixed Backup by Day and Size**, for example:
  - `tklogs_20240521_1.log`
  - `tklogs_20240521_2.log`
  - `tklogs_20240521_3.log`
  - `tklogs_20240521_4.log`
  - `tklogs_20240522_1.log`
  - `tklogs_20240522_2.log`
  - `tklogs_20240522_3.log`
  - `tklogs_20240522_4.log`

- **Mixed Backup by Hour and Size**, for example:
  - `tklogs_2024052110_1.log`
  - `tklogs_2024052110_2.log`
  - `tklogs_2024052110_3.log`
  - `tklogs_2024052211_1.log`
  - `tklogs_2024052211_2.log`
  - `tklogs_2024052211_3.log`

- **Mixed Backup by Month and Size**, for example:
  - `tklogs_202403_1.log`
  - `tklogs_202403_2.log`
  - `tklogs_202403_3.log`
  - `tklogs_202404_1.log`
  - `tklogs_202404_2.log`
  - `tklogs_202404_3.log`

**Log Printing Methods:**

- **Global Singleton:**
  - `trace!`, `debug!`, `info!`, `warn!`, `error!`, `fatal!`

- **Multiple Instances:**
  - `traces!`, `debugs!`, `infos!`, `warns!`, `errors!`, `fatals!`

**Asynchronous Logging**

- **Global Singleton Async:**
  - `async_trace!`, `async_debug!`, `async_info!`, `async_warn!`, `async_error!`, `async_fatal!`

- **Multiple Instances Async:**
  - `async_traces!`, `async_debugs!`, `async_infos!`, `async_warns!`, `async_errors!`, `async_fatals!`

**Example: Global Asynchronous Usage**

```rust
use tklog::{
    async_debug, async_error, async_fatal, async_info, async_trace, async_warn, LEVEL, Format, ASYNC_LOG
};

async fn async_log_init() {
    // Configure global singleton
    ASYNC_LOG
        .set_console(false) // Disable console output
        .set_level(LEVEL::Trace) // Set log level to Trace
        .set_format(Format::LevelFlag | Format::Time | Format::ShortFileName) // Define structured logging output
        .set_cutmode_by_size("tklog_async.txt", 10000, 10, false) // Rotate log files by size, every 10,000 bytes, with 10 backups
        .await;
}

#[tokio::test]
async fn testlog() {
    async_log_init().await;
    async_trace!("trace>>>>", "aaaaaaa", 1, 2, 3);
    async_debug!("debug>>>>", "aaaaaaa", 1, 2, 3);
    async_info!("info>>>>", "bbbbbbbbb", 1, 2, 3);
    async_warn!("warn>>>>", "cccccccccc", 1, 2, 3);
    async_error!("error>>>>", "ddddddddddddd", 1, 2, 3);
    async_fatal!("fatal>>>>", "eeeeeeeeeeeeee", 1, 2, 3);
    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
}
```

###### Execution Result:

```text
[TRACE] 20:03:32 testasynclog.rs 20:trace>>>>,aaaaaaa,1,2,3
[DEBUG] 20:03:32 testasynclog.rs 21:debug>>>>,aaaaaaa,1,2,3
[INFO] 20:03:32 testasynclog.rs 22:info>>>>,bbbbbbbbb,1,2,3
[WARN] 20:03:32 testasynclog.rs 23:warn>>>>,cccccccccc,1,2,3
[ERROR] 20:03:32 testasynclog.rs 24:error>>>>,ddddddddddddd,1,2,3
[FATAL] 20:03:32 testasynclog.rs 25:fatal>>>>,eeeeeeeeeeeeee,1,2,3
```

###### Multiple Instance Asynchronous

```rust
use std::sync::Arc;

use tklog::{
    async_debugs, async_errors, async_fatals, async_infos, async_traces, async_warns, LEVEL, Format, ASYNC_LOG, MODE
};

#[tokio::test]
async fn testmultilogs() {
    let mut log = tklog::Async::Logger::new();
    log.set_console(false)
        .set_level(LEVEL::Debug)
        .set_cutmode_by_time("tklogasync.log", MODE::DAY, 10, true)
        .await
        .set_formatter("{message} | {time} {file}{level}\n");

let mut logger = Arc::clone(&Arc::new(Mutex::new(log)));
    let log = logger.borrow_mut();
    async_traces!(log, "async_traces>>>>", "AAAAAAAAAA", 1, 2, 3);
    async_debugs!(log, "async_debugs>>>>", "BBBBBBBBBB", 1, 2, 3);
    async_infos!(log, "async_infos>>>>", "CCCCCCCCCC", 1, 2, 3);
    async_warns!(log, "async_warns>>>>", "DDDDDDDDDD", 1, 2, 3);
    async_errors!(log, "async_errors>>>>", "EEEEEEEEEEE", 1, 2, 3);
    async_fatals!(log, "async_fatals>>>>", "FFFFFFFFFFFF", 1, 2, 3);
    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
}
```

###### Execution Result:

```text
async_debugs>>>>,BBBBBBBBBB,1,2,3 | 2024-05-26 20:10:24 testasynclog.rs 45[DEBUG]
async_infos>>>>,CCCCCCCCCC,1,2,3 | 2024-05-26 20:10:24 testasynclog.rs 46[INFO]
async_warns>>>>,DDDDDDDDDD,1,2,3 | 2024-05-26 20:10:24 testasynclog.rs 47[WARN]
async_errors>>>>,EEEEEEEEEEE,1,2,3 | 2024-05-26 20:10:24 testasynclog.rs 48[ERROR]
async_fatals>>>>,FFFFFFFFFFFF,1,2,3 | 2024-05-26 20:10:24 testasynclog.rs 49[FATAL]
```

------------

## Supports the official log library standard API

1.  tklog implements the regular use of the official Log interface API
2.  Implement the official log library API to be used in asynchronous scenarios

##### How to enable the official log library API：

###### tklog enables API support for official logs by calling the `uselog()` function

###### Use example

```rust
use std::{thread, time::Duration};
use tklog::{Format, LEVEL, LOG};
fn test_synclog() {
    //init  LOG
    LOG.set_console(true)
        .set_level(LEVEL::Debug)
        .set_cutmode_by_size("logsize.log", 10000, 10, true)
        .uselog();  //Enable the official log library
	
	log::trace!("trace>>>>{}{}{}{}{}", "aaaa", 1, 2, 3, 4);
	log::debug!("debug>>>>{}{}",1,2);
    log::info!("info log");
    log::warn!("warn log");
    log::error!("error log");
	thread::sleep(Duration::from_secs(1))
}
```

####  Enable the log library API in asynchronous scenarios

```rust
use std::{thread, time::Duration};
use tklog::{Format, LEVEL, ASYNC_LOG};
async fn test_synclog() {
    //init ASYNC  LOG 
    ASYNC_LOG.set_console(false)
        .set_cutmode_by_size("asynclogsize.log", 10000, 10, true).await
        .uselog(); //Enable the official log library
	
    log::trace!("trace async log>>>>{}{}{}{}{}", "aaaaaaaaa", 1, 2, 3, 4);
    log::debug!("debug async log>>>>{}{}",1,2);
	log::info!("info async log");
    log::warn!("warn async log");
    log::error!("error async log");
    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
}
```

---

## Supports centralized configuration of `tklog` log parameters via `LogOption`

##### By setting `LogOption`, you can achieve the same effect as calling the following functions:
- `set_console`
- `set_level`
- `set_format`
- `set_formatter`
- `set_cutmode_by_size`
- `set_cutmode_by_time`
- `set_cutmode_by_mixed`

##### Description of `LogOption` object properties:

- **level**: Log level
- **format**: Log format
- **formatter**: Custom log output format
- **console**: Console logging settings
- **fileoption**: File logging settings

### Set `LogOption` object using `set_option`, Example:

Below are examples of configuring the logger to use different file rotation modes and backup strategies. Each example sets specific log options, including log level, console output settings, and file rotation behavior.

#### 1. Log file rotation by time (`FileTimeMode`)

This configuration rolls over log files based on the specified time mode (e.g., daily).

```rust
tklog::LOG.set_option(LogOption {
    level: Some(LEVEL::Debug), // Set log level to Debug
    console: Some(false),      // Disable console output
    format: None,              // Use default log format
    formatter: None,           // Use default log formatter
    fileoption: Some(Box::new(FileTimeMode::new(
        "day.log",             // Log file name
        tklog::MODE::DAY,      // Roll over every day
        10,                    // Keep a maximum of 10 backup files
        true                   // Compress backup files
    ))),
});
```

#### 2. Log file rotation by size (`FileSizeMode`)

This configuration rolls over log files when the file size reaches a specified limit.

```rust
tklog::LOG.set_option(LogOption {
    level: Some(LEVEL::Debug), // Set log level to Debug
    console: Some(false),      // Disable console output
    format: None,              // Use default log format
    formatter: None,           // Use default log formatter
    fileoption: Some(Box::new(FileSizeMode::new(
        "day.log",             // Log file name
        1 << 30,               // Roll over when the file size reaches 1GB (1<<30 bytes)
        10,                    // Keep a maximum of 10 backup files
        true                   // Compress backup files
    ))),
});
```

#### 3. Log file rotation by both size and time (`FileMixedMode`)

This configuration combines both size and time criteria for log file rotation.

```rust
tklog::LOG.set_option(LogOption {
    level: Some(LEVEL::Debug), // Set log level to Debug
    console: Some(false),      // Disable console output
    format: None,              // Use default log format
    formatter: None,           // Use default log formatter
    fileoption: Some(Box::new(FileMixedMode::new(
        "day.log",             // Log file name
        1 << 30,               // Roll over when the file size reaches 1GB (1<<30 bytes)
        tklog::MODE::DAY,      // Also roll over every day
        10,                    // Keep a maximum of 10 backup files
        true                   // Compress backup files
    ))),
});
```

### Explanation:

- **Log Level (`level`)**: Specifies the minimum log severity level; only messages of this level or higher will be logged. Here it is set to `Debug`, so all messages of `Debug` level and higher will be logged.
  
- **Console Output (`console`)**: Determines whether logs are printed to the console. In this example, console output is disabled (`false`).

- **Format and Formatter (`format`, `formatter`)**: These fields are set to `None`, indicating that the default log format and formatter will be used.

- **File Options (`fileoption`)**: This field specifies the file logging strategy, including:
  - **FileTimeMode**: Rolls over the log file based on a time schedule (e.g., daily).
  - **FileSizeMode**: Rolls over the log file when the file size reaches a specified limit.
  - **FileMixedMode**: Combines both time and size-based rolling for log files.

Each `fileoption` accepts parameters such as the log file name, the rolling criteria (size or time), the maximum number of backup files to keep, and whether to compress the backup files. For `FileMixedMode`, an additional time mode parameter is needed to specify the time-based rolling behavior.

These configurations allow for flexible log file management, ensuring that log files are stored efficiently and don't consume too much disk space, while also providing detailed control over how and when log files are rolled over and archived.

------

## The module sets  log parameters

1. `tklog` supports setting log parameters for a specific module using `set_mod_option`.
2. `set_mod_option` allows specifying a particular module name and setting log parameters for that module only, affecting only that module.
3. `set_mod_option` supports prefix matching, such as `"testlog::*"`, which applies to all submodules under the `testlog` module.
4. In a project, you can use the global `LOG` object while setting independent log parameters for multiple modules.
5. The module log parameter settings for the asynchronous global object `ASYNC_LOG` are the same as for the synchronous `LOG`.

#####  `set_mod_option` example1：

tklog::LOG.set_mod_option("testlog::module1",LogOption{level:Some(LEVEL::Debug),console: Some(false),format:None,formatter:None,fileoption: Some(Box::new(FileTimeMode::new("day.log", tklog::MODE::DAY, 0,true)))});

- `testlog::module1` is the module name，you can use  `module_path!()`  to print out the current module name
- When tklog is used in the module `testlog::module1`, tklog will use the LogOption object

#####  `set_mod_option` example2：

tklog::LOG.set_mod_option("testlog::*",LogOption{level:Some(LEVEL::Debug),console: Some(false),format:None,formatter:None,fileoption: Some(Box::new(FileTimeMode::new("day.log", tklog::MODE::DAY, 0,true)))});

-  `testlog::*`: tklog supports using * to match all submodules. testlog::* indicates all submodules of testlog.
- `testlog::module1::*` indicates all submodules of `testlog::module1`

#### Complete mod example

```rust
mod module1 {
    use std::{thread, time::Duration};
    use tklog::{handle::FileTimeMode, LogOption, LEVEL};
    pub fn testmod() {
        tklog::LOG.set_mod_option("testlog::module1", LogOption { level: Some(LEVEL::Debug), format: None, formatter: None, console: None, fileoption: Some(Box::new(FileTimeMode::new("module1.log", tklog::MODE::DAY, 0, true))) });
        tklog::debug!("module1,tklog api,LOG debug log>>", 123);
        tklog::info!("module1,tklog api,LOG info log>>", 456);
        thread::sleep(Duration::from_secs(1))
    }
}

mod module2 {
    use std::{thread, time::Duration};
    use tklog::{handle::FileTimeMode, LogOption, LEVEL};
    pub fn testmod() {
        tklog::LOG.set_mod_option("testlog::module2::*", LogOption { level: Some(LEVEL::Info), format: None, formatter: None, console: None, fileoption: Some(Box::new(FileTimeMode::new("module2.log", tklog::MODE::DAY, 0, true))) });
    }
    mod m2 {
        pub fn testmod() {
            tklog::debug!("module2,tklog api,LOG debug log>>", 123);
            tklog::info!("module2,tklog api,LOG info log>>", 456);
            thread::sleep(Duration::from_secs(1))
        }
    }
}

#[test]
fn testmod2() {
    module1::testmod();
    module2::m2::testmod();
}
```

##### Execution Result:

```text
[DEBUG] 2024-06-19 10:54:07 testlog.rs 54:module1,tklog api,LOG debug log>>,123
[INFO] 2024-06-19 10:54:07 testlog.rs 55:module1,tklog api,LOG info log>>,456
[DEBUG] 2024-06-19 10:54:07 testlog.rs 56:module1,log api,debug log>>111
[INFO] 2024-06-19 10:54:07 testlog.rs 57:module1,log api,info log>>222
[INFO] 2024-06-19 10:54:08 testlog.rs 68:module2,tklog api,LOG info log>>,456
[INFO] 2024-06-19 10:54:08 testlog.rs 70:module2,log api,info log>>222
```

#### Example 2: Asynchronous logging

```rust

mod module3 {
    use tklog::{handle::FileTimeMode, Format, LogOption, LEVEL};
    pub async fn testmod() {
        tklog::ASYNC_LOG.set_mod_option("testlog::module3", LogOption { level: Some(LEVEL::Debug), format: Some(Format::Date), formatter: None, console: None, fileoption: Some(Box::new(FileTimeMode::new("module3.log", tklog::MODE::DAY, 0, true))) }).await.uselog();
        tklog::async_debug!("async module3,tklog api,LOG debug log>>", 123);
        tklog::async_info!("async module3,tklog api,LOG info log>>", 456);
        log::debug!("async module3,log api,debug log>>{}", 333);
        log::info!("async module3,log api,info log>>{}", 444);
        tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
    }
}

mod module4 {
    use tklog::{handle::FileTimeMode, Format, LogOption, LEVEL};
    pub async fn testmod() {
        tklog::ASYNC_LOG.set_mod_option("testlog::module4", LogOption { level: Some(LEVEL::Info), format: Some(Format::Date), formatter: None, console: None, fileoption: Some(Box::new(FileTimeMode::new("module4.log", tklog::MODE::DAY, 0, true))) }).await.uselog();
        tklog::async_debug!("async module4,tklog api,LOG debug log>>", 123);
        tklog::async_info!("async module4,tklog api,LOG info log>>", 456);
        log::debug!("async module4,log api,debug log>>{}", 333);
        log::info!("async module4,log api,info log>>{}", 444);
        tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
    }
}

#[tokio::test]
async fn testmod4() {
    module3::testmod().await;
    module4::testmod().await;
}
```

##### Execution Result:

```text
[DEBUG] 2024-06-19 10:59:26 testlog.rs 85:async module3,tklog api,LOG debug log>>,123
[INFO] 2024-06-19 10:59:26 testlog.rs 86:async module3,tklog api,LOG info log>>,456
[DEBUG] 2024-06-19 10:59:26 testlog.rs 87:async module3,log api,debug log>>333
[INFO] 2024-06-19 10:59:26 testlog.rs 88:async module3,log api,info log>>444
[INFO] 2024-06-19 10:59:27 testlog.rs 98:async module4,tklog api,LOG info log>>,456
[INFO] 2024-06-19 10:59:27 testlog.rs 100:async module4,log api,info log>>444

```

------------

## tklog supports  multi-instance formatting format! And asynchronous format!

###### Example：

```rust
#[test]
fn testformats() {
    let mut log = Logger::new();
    log.set_console(true)
        .set_level(LEVEL::Debug)
        .set_cutmode_by_time("tklogs.log", MODE::DAY, 10, true);
    let mut logger = Arc::clone(&Arc::new(Mutex::new(log)));
    let log = logger.borrow_mut();

let v = vec![1, 2, 3];
    tklog::formats!(log, LEVEL::Debug, "Debug>>>{},{}>>>{:?}", 1, 2, v);

thread::sleep(Duration::from_secs(1))
}
```

###### Execution Result:

```rust
[DEBUG] 2024-06-06 15:54:07 testsynclog.rs 80:Debug>>>1,2>>>[1, 2, 3]
[INFO] 2024-06-06 15:54:07 testsynclog.rs 83:Info>>>1,2>>['a', 'b']
[WARN] 2024-06-06 15:54:07 testsynclog.rs 84:Warn>>>1,2
[ERROR] 2024-06-06 15:54:07 testsynclog.rs 85:Error>>>1,2
[FATAL] 2024-06-06 15:54:07 testsynclog.rs 86:Fatal>>>1,2
```

###### asynchronous Example

```rust
#[tokio::test]
async fn testformats() {
    let mut log = tklog::Async::Logger::new();
    log.set_console(true)
        .set_level(LEVEL::Debug)
        .set_cutmode_by_time("tklogasyncs.log", MODE::DAY, 10, true)
        .await;
    let mut logger = Arc::clone(&Arc::new(Mutex::new(log)));
    let log = logger.borrow_mut();

let v = vec![1, 2, 3];
    tklog::async_formats!(log, LEVEL::Debug, "Debug>>>{},{}>>>{:?}", 1, 2, v);

tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
}
```

###### Execution Result:

```rust
[DEBUG] 2024-06-06 16:09:26 testasynclog.rs 61:Debug>>>1,2>>>[1, 2, 3]
[INFO] 2024-06-06 16:09:26 testasynclog.rs 64:Info>>>1,2>>['a', 'b']
[WARN] 2024-06-06 16:09:26 testasynclog.rs 65:Warn>>>1,2
[ERROR] 2024-06-06 16:09:26 testasynclog.rs 66:Error>>>1,2
[FATAL] 2024-06-06 16:09:26 testasynclog.rs 67:Fatal>>>1,2
```

------

## tklog supports custom log processing functions.

###### tklog allows the addition of external custom functions through `set_custom_handler()`, enabling control over the log processing flow and logic.

###### Example

```rust
#[test]
fn test_custom() {
    fn custom_handler(lc: &LogContext) -> bool {
        println!("level >>>>>>>>>>>>>>>>>{:?}", lc.level);
        println!("message >>>>>>>>>>>>>>>>>{:?}", lc.log_body);
        println!("filename >>>>>>>>>>>>>>>>>{:?}", lc.filename);
        println!("line >>>>>>>>>>>>>>>>>{:?}", lc.line);
        println!("modname >>>>>>>>>>>>>>>>>{:?}", lc.modname);
        if lc.level == LEVEL::Debug {
            println!("{}", "debug now");
            return false;
        }
        true
    }

LOG.set_custom_handler(custom_handler);
    debug!("000000000000000000");
    info!("1111111111111111111");
    thread::sleep(Duration::from_secs(1))
}
```

###### Execution Result

```rust
---- test_custom stdout ----
level >>>>>>>>>>>>>>>>>Debug
message >>>>>>>>>>>>>>>>>"000000000000000000"
filename >>>>>>>>>>>>>>>>>"tests\\testsynclog.rs"
line >>>>>>>>>>>>>>>>>143
modname >>>>>>>>>>>>>>>>>"testsynclog"
debug now
level >>>>>>>>>>>>>>>>>Info
message >>>>>>>>>>>>>>>>>"1111111111111111111"
filename >>>>>>>>>>>>>>>>>"tests\\testsynclog.rs"
line >>>>>>>>>>>>>>>>>144
modname >>>>>>>>>>>>>>>>>"testsynclog"
[INFO] 2024-08-05 15:39:07 testsynclog.rs 144:1111111111111111111
```

##### Explanation

When the function `fn custom_handler(lc: &LogContext) -> bool` returns `true`, **tklog** calls the `custom_handler` to execute the custom function and then continues with **tklog**'s logging process. When it returns `false`, **tklog** does not proceed with its logging process and directly returns. As shown in the example, when the log level is `Debug`, it returns `false`, so **tklog** does not print the `Debug` log.

## `tklog` Supports Custom Log Multi-Parameter Separators

###### `tklog` allows setting custom separators using the `set_separator()` method

The following Rust code demonstrates how to configure and use custom separators for log entries in the `tklog` framework:

```rust
#[test]
fn testlog() {
    log_init();
    trace!("trace>>>>", "aaaaaaaaa", 1, 2, 3, 4);
    debug!("debug>>>>", "bbbbbbbbb", 1, 2, 3, 5);
    LOG.set_separator("|");
    info!("info>>>>", "ccccccccc", 1, 2, 3, 5);
    warn!("warn>>>>", "dddddddddd", 1, 2, 3, 6);
    LOG.set_separator(",");
    error!("error>>>>", "eeeeeeee", 1, 2, 3, 7);
    fatal!("fatal>>>>", "ffffffff", 1, 2, 3, 8);
    thread::sleep(Duration::from_secs(1))
}
```

###### Execution Result

The output generated by the testlog function demonstrates the impact of setting different separators on the log messages:

```rust
---- testlog stdout ----
[TRACE] 2024-08-15 14:14:19.289590 tests\testsynclog.rs 22:trace>>>>aaaaaaaaa1234
[DEBUG] 2024-08-15 14:14:19.289744 tests\testsynclog.rs 23:debug>>>>bbbbbbbbb1235
[INFO] 2024-08-15 14:14:19.289761 tests\testsynclog.rs 25:info>>>>|ccccccccc|1|2|3|5
[WARN] 2024-08-15 14:14:19.289774 tests\testsynclog.rs 26:warn>>>>|dddddddddd|1|2|3|6
[ERROR] 2024-08-15 14:14:19.289789 tests\testsynclog.rs 28:error>>>>,eeeeeeee,1,2,3,7
[FATAL] 2024-08-15 14:14:19.289802 tests\testsynclog.rs 29:fatal>>>>,ffffffff,1,2,3,8
```

### tklog Supports Independent Logging Format Parameters for Different Log Levels

###### tklog sets independent logging parameters for different log levels via `set_level_option()`

###### `set_level_option()` accepts objects of any type that implements the `OptionTrait` trait

##### Example 1: Using `LevelOption` object to set log formatting

```rust
#[test]
fn testlog() {
    // Set the Info level log format to Format::LevelFlag
    // Set the Fatal level log format to Format::LevelFlag | Format::Date
    LOG.set_level_option(LEVEL::Info, LevelOption { format: Some(Format::LevelFlag), formatter: None })
    .set_level_option(LEVEL::Fatal, LevelOption { format: Some(Format::LevelFlag | Format::Date), formatter: None });

trace!("this is trace log");
    debug!("this is debug log");
    info!("this is info log");
    warn!("this is warn log");
    error!("this is error log");
    fatal!("this is fatal log");
    thread::sleep(Duration::from_secs(1));
}
```

###### Execution Result

```rust
---- testlog stdout ----
[DEBUG] 2024-08-24 15:06:02 test_0100.rs 17:this is debug log
[INFO] this is info log
[WARN] 2024-08-24 15:06:02 test_0100.rs 19:this is warn log
[ERROR] 2024-08-24 15:06:02 test_0100.rs 20:this is error log
[FATAL] 2024-08-24 this is fatal log
```

##### Example 2: Using `LogOption` object to set more parameters including separate log files

```rust
#[test]
fn testlog() {
    LOG.set_level_option(LEVEL::Info, LogOption { format: None, formatter: None, level: None, console: None, fileoption: Some(Box::new(FileTimeMode::new("0200time.log", tklog::MODE::DAY, 0, false))) })
    .set_level_option(LEVEL::Fatal, LogOption { format: None, formatter: None, level: None, console: None, fileoption: Some(Box::new(FileSizeMode::new("0200size.log", 1<<10, 0, false))) });

1. The file logs at the Info level are separated by day and the file name is 0200time.log
2. The file logs of the Fatal level are separated by size and the file name is 0200sisie.log

------------

## tklog supports formatting settings for log attribute identifiers

##### Set log identifier and time format through the `set_attr_format` function

##### Example:

```rust
fn testlog() {
    tklog::LOG.set_attr_format(|fmt| {
        fmt.set_level_fmt(|level| {
            match level {
                LEVEL::Trace => "[T]",
                LEVEL::Debug => "[D]",
                LEVEL::Info => "[I]",
                LEVEL::Warn => "[W]",
                LEVEL::Error => "[E]",
                LEVEL::Fatal => "[F]",
                LEVEL::Off => "",
            }.to_string()
        });

fmt.set_time_fmt(|| {
            let now: DateTime<Local> = Local::now();
            (now.format("%Y/%m/%d").to_string(), now.format("%H:%M:%S").to_string(), "".to_string())
        });

fmt.set_console_body_fmt(|level, body| {
             //Handles the last newline character of the body
            let trimmed_body = if body.ends_with('\n') { format!("{}{}", body.as_str()[..body.len() - 1].to_string(), "\x1b[0m\n") } else { format!("{}{}", body, "\x1b[0m\n") };

match level {
                LEVEL::Trace => format!("{}{}", "\x1b[34m", trimmed_body), //blue
                LEVEL::Debug => format!("{}{}", "\x1b[36m", trimmed_body), //cyan
                LEVEL::Info => format!("{}{}", "\x1b[32m", trimmed_body),  //green
                LEVEL::Warn => format!("{}{}", "\x1b[33m", trimmed_body),  //yellow
                LEVEL::Error => format!("{}{}", "\x1b[31m", trimmed_body), //red
                LEVEL::Fatal => format!("{}{}", "\x1b[41m", trimmed_body), //background red
                LEVEL::Off => "".to_string(),
            }
        });

fmt.set_body_fmt(|level, body| {
             //Handles the last newline character of the body
            let trimmed_body = if body.ends_with('\n') { format!("{}{}", body.as_str()[..body.len() - 1].to_string(), "\x1b[0m\n") } else { format!("{}{}", body, "\x1b[0m\n") };
            match level {
                LEVEL::Trace => format!("{}{}", "\x1b[44m", trimmed_body), //background blue
                LEVEL::Debug => format!("{}{}", "\x1b[46m", trimmed_body), //background cyan
                LEVEL::Info => format!("{}{}", "\x1b[42m", trimmed_body),  //background green
                LEVEL::Warn => format!("{}{}", "\x1b[43m", trimmed_body),  //background yellow
                LEVEL::Error => format!("{}{}", "\x1b[41m", trimmed_body), //background red
                LEVEL::Fatal => format!("{}{}", "\x1b[45m", trimmed_body), //background purple
                LEVEL::Off => "".to_string(),
            }
        });
    });

trace!("trace!", "this is sync log");
    debug!("debug!","this is sync log");
    info!("info!","this is sync log");
    warn!("warn!","this is sync log");
    error!("error!","this is sync log");
    fatal!("fata!","this is sync log");
    thread::sleep(Duration::from_secs(1))
}
```
###### Execution Result
```text
[D] 2024/10/17 19:41:20 test_0230.rs 32:debug!this is sync log
[I] 2024/10/17 19:41:20 test_0230.rs 33:info!this is sync log
[W] 2024/10/17 19:41:20 test_0230.rs 34:warn!this is sync log
[E] 2024/10/17 19:41:20 test_0230.rs 35:error!this is sync log
[F] 2024/10/17 19:41:20 test_0230.rs 36:fata!this is sync log
```

------------

## Benchmark Test

```test
log_benchmark           time:   [2.3949 µs 2.4428 µs 2.4941 µs]
                        change: [-0.5586% +1.9685% +4.4040%] (p = 0.14 > 0.05)
                        No change in performance detected.
Found 3 outliers among 100 measurements (3.00%)
  1 (1.00%) high mild
  2 (2.00%) high severe

mod_benchmark           time:   [2.1946 µs 2.2325 µs 2.2718 µs]
                        change: [-2.5723% +0.0728% +2.8784%] (p = 0.96 > 0.05)
                        No change in performance detected.
Found 7 outliers among 100 measurements (7.00%)
  3 (3.00%) high mild
  4 (4.00%) high severe
```

```text
log_benchmark           time:   [2.3992 µs 2.4307 µs 2.4632 µs]
                        change: [-12.388% -9.7287% -6.8751%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
  1 (1.00%) low mild
  5 (5.00%) high mild
  1 (1.00%) high severe

mod_benchmark           time:   [2.2126 µs 2.2508 µs 2.2920 µs]
                        change: [-11.895% -9.0113% -6.2389%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 6 outliers among 100 measurements (6.00%)
  4 (4.00%) high mild
  2 (2.00%) high severe
```

```text
log_benchmark           time:   [2.4525 µs 2.5059 µs 2.5632 µs]
                        change: [-10.548% -7.0786% -3.6963%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild

mod_benchmark           time:   [2.2603 µs 2.3113 µs 2.3693 µs]
                        change: [-12.539% -9.5519% -6.4982%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  4 (4.00%) high mild
  1 (1.00%) high severe
```

```text
log_benchmark           time:   [2.5650 µs 2.6194 µs 2.6775 µs]
                        change: [-3.5311% -0.4742% +3.3119%] (p = 0.79 > 0.05)
                        No change in performance detected.
Found 6 outliers among 100 measurements (6.00%)
  5 (5.00%) high mild
  1 (1.00%) high severe

mod_benchmark           time:   [2.4908 µs 2.5655 µs 2.6440 µs]
                        change: [-1.3617% +1.9010% +5.2711%] (p = 0.29 > 0.05)
                        No change in performance detected.
Found 4 outliers among 100 measurements (4.00%)
  4 (4.00%) high mild
```

##### **log_benchmark**
| Test Number | Minimum Time (µs) | Maximum Time (µs) | Average Time (µs) | Percentage Change (%) | p-value |
|-------------|--------------------|--------------------|--------------------|-----------------------|---------|
| 1           | 2.3949             | 2.4941             | 2.4428             | -0.5586%              | 0.14    |
| 2           | 2.3992             | 2.4632             | 2.4307             | -12.388%              | 0.00    |
| 3           | 2.4525             | 2.5632             | 2.5059             | -10.548%              | 0.00    |
| 4           | 2.5650             | 2.6775             | 2.6194             | -3.5311%              | 0.79    |

##### **mod_benchmark**
| Test Number | Minimum Time (µs) | Maximum Time (µs) | Average Time (µs) | Percentage Change (%) | p-value |
|-------------|--------------------|--------------------|--------------------|-----------------------|---------|
| 1           | 2.1946             | 2.2718             | 2.2325             | -2.5723%              | 0.96    |
| 2           | 2.2126             | 2.2920             | 2.2508             | -11.895%              | 0.00    |
| 3           | 2.2603             | 2.3693             | 2.3113             | -12.539%              | 0.00    |
| 4           | 2.4908             | 2.6440             | 2.5655             | -1.3617%              | 0.29    |

#### 2. **Summary Statistics**
- **log_benchmark**
  - **Minimum Time**: 2.3949 µs
  - **Maximum Time**: 2.6775 µs
  - **Average Time**: 2.5160 µs
  - **Change Range**: From -0.5586% to -12.388%
  - **p-value**: Most tests show significant results (p < 0.05).

- **mod_benchmark**
  - **Minimum Time**: 2.1946 µs
  - **Maximum Time**: 2.6440 µs
  - **Average Time**: 2.3430 µs
  - **Change Range**: From -2.5723% to -12.539%
  - **p-value**: Most tests show significant results (p < 0.05).

### Performance Statistics (Response Times)
1. Minimum Time: 2.1946 µs
2. Maximum Time: 2.6775 µs
3. Average Time: 2.3946 µs

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