Trait astral::thirdparty::slog::Value

pub trait Value {
    fn serialize(
        &self,
        record: &Record<'_>,
        key: &'static str,
        serializer: &mut dyn Serializer
    ) -> Result<(), Error>;
}

Value that can be serialized

Types that implement this type implement custom serialization in the structured part of the log macros. Without an implementation of Value for your type you must emit using either the ? “debug”, #? “pretty-debug”, % “display”, #% “alternate display” or SerdeValue (if you have the nested-values feature enabled) formatters.

Example

use slog::{Key, Value, Record, Result, Serializer};
struct MyNewType(i64);

impl Value for MyNewType {
    fn serialize(&self, _rec: &Record, key: Key, serializer: &mut Serializer) -> Result {
        serializer.emit_i64(key, self.0)
    }
}

See also KV for formatting both the key and value.

Required Methods

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

Serialize self into Serializer

Structs implementing this trait should generally only call respective methods of serializer.

Implementations on Foreign Types

impl Value for i16

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<T> Value for Option<T>where
    T: Value,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for SocketAddr

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<T> Value for Arc<T>where
    T: Value + ?Sized,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for bool

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for u32

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for isize

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<T> Value for Wrapping<T>where
    T: Value,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<T> Value for Rc<T>where
    T: Value,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for f64

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<'a, V> Value for &'a Vwhere
    V: Value + ?Sized,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for char

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for ()

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for i32

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for f32

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for u16

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for i128

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for i64

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for str

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for i8

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<T> Value for Box<T, Global>where
    T: Value + ?Sized,

fn serialize(
    &self,
    record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<'a> Value for Arguments<'a>

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for u64

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for u8

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl<'a> Value for Display<'a>

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for usize

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for Error

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

impl Value for u128

fn serialize(
    &self,
    _record: &Record<'_>,
    key: &'static str,
    serializer: &mut dyn Serializer
) -> Result<(), Error>

Implementors

impl Value for String

impl<'a, V, F> Value for FnValue<V, F>where
    V: 'a + Value,
    F: 'a + for<'c, 'd> Fn(&'c Record<'d>) -> V,

impl<E> Value for ErrorValue<E>where
    E: 'static + Error,

impl<F> Value for PushFnValue<F>where
    F: 'static + for<'c, 'd> Fn(&'c Record<'d>, PushFnValueSerializer<'c>) -> Result<(), Error>,