use alogfmt::{to_string, to_bytes, to_writer};
use anyhow::Result;
use serde::Serialize;

#[derive(Serialize)]
struct MyStruct {
    pub ts: u64,
    pub message: String,
}

fn main() -> Result<()> {
    let s = MyStruct{
        ts: 1690232215,
        message: String::from("Hello World!"),
    };

    let lf = to_string(&s)?;

    assert_eq!(
        lf,
        r#"ts=1690232215 message="Hello World!""#
    );

    Ok(())
}

也导出了Serializer实现。它包装了一个io::Write，可以像to_writer一样使用。由于Serializer的构造并不特别昂贵，因此通常调用to_writer应该没问题。如果您想重用Serializer，您必须调用serializer.reset()或serializer.next()来重置序列化器的内部状态，使其准备好下一个文档。

use alogfmt::Serializer;
use anyhow::Result;
use serde::Serialize;

#[derive(Serialize)]
struct MyStruct {
    pub ts: u64,
    pub message: String,
}

fn main() -> Result<()> {
    let s = MyStruct{
        ts: 1690232215,
        message: String::from("Hello World!"),
    };

    let mut serializer = Serializer::new(Vec::new());

    for i in 0..3 {
        s.serialize(&mut serializer)?;
        serializer.next()?;
    }

    // take back the io::Write so we can check the results
    let result = unsafe {
        // The serializer should only ever produce valid utf8, so
        // we can use from_utf8_unchecked to avoid the overhead of
        // checking if the vector is UTF-8 encoded, though the safe
        // from_utf8 would work just as well.
        String::from_utf8_unchecked(serializer.writer())
    };

    assert_eq!(
        result,
        "ts=1690232215 message=\"Hello World!\"\nts=1690232215 message=\"Hello World!\"\nts=1690232215 message=\"Hello World!\"\n"
    );

    Ok(())
}

许可证

    Copyright (C) 2023 Aurora McGinnis

    This Source Code Form is subject to the terms of the Mozilla Public
    License, v. 2.0. If a copy of the MPL was not distributed with this
    file, You can obtain one at http://mozilla.org/MPL/2.0/.