Trait ResultExt 

pub trait ResultExt {
    // Required methods
    fn log_err(self, msg: impl Display) -> Self;
    fn log_err_with<F>(self, f: F) -> Self
       where F: FnOnce() -> String;
    fn log_warn(self, msg: impl Display) -> Self;
    fn log_warn_with<F>(self, f: F) -> Self
       where F: FnOnce() -> String;
    fn log_info(self, msg: impl Display) -> Self;
    fn log_info_with<F>(self, f: F) -> Self
       where F: FnOnce() -> String;
    fn log_debug(self, msg: impl Display) -> Self;
    fn log_debug_with<F>(self, f: F) -> Self
       where F: FnOnce() -> String;
    fn log_trace(self, msg: impl Display) -> Self;
    fn log_trace_with<F>(self, f: F) -> Self
       where F: FnOnce() -> String;
}

Extension trait for Result to log errors and warnings using the tracing crate.

Required Methods

fn log_err(self, msg: impl Display) -> Self

Log errors at error level with a static message.

If you don’t care about the error message, call eg. log_err("").

fn log_err_with<F>(self, f: F) -> Self

where F: FnOnce() -> String,

Log errors at error level with a message generated by a closure.

fn log_warn(self, msg: impl Display) -> Self

Log errors at warning level with a static message.

If you don’t care about the error message, call eg. log_warn("").

fn log_warn_with<F>(self, f: F) -> Self

where F: FnOnce() -> String,

Log errors at warning level with a message generated by a closure.

fn log_info(self, msg: impl Display) -> Self

Log errors at informational level with a static message.

If you don’t care about the error message, call eg. log_warn("").

fn log_info_with<F>(self, f: F) -> Self

where F: FnOnce() -> String,

Log errors at informational level with a message generated by a closure.

fn log_debug(self, msg: impl Display) -> Self

Log errors at debug level with a static message.

If you don’t care about the error message, call eg. log_warn("").

fn log_debug_with<F>(self, f: F) -> Self

where F: FnOnce() -> String,

Log errors at debug level with a message generated by a closure.

fn log_trace(self, msg: impl Display) -> Self

Log errors at trace level with a static message.

If you don’t care about the error message, call eg. log_warn("").

fn log_trace_with<F>(self, f: F) -> Self

where F: FnOnce() -> String,

Log errors at trace level with a message generated by a closure.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T, E> ResultExt for Result<T, E>

where E: Debug,

Available on crate feature tracing only.

fn log_err(self, msg: impl Display) -> Self

fn log_err_with<F>(self, msg: F) -> Self

where F: FnOnce() -> String,

fn log_warn(self, msg: impl Display) -> Self

fn log_warn_with<F>(self, msg: F) -> Self

where F: FnOnce() -> String,

fn log_info(self, msg: impl Display) -> Self

fn log_info_with<F>(self, msg: F) -> Self

where F: FnOnce() -> String,

fn log_debug(self, msg: impl Display) -> Self

fn log_debug_with<F>(self, msg: F) -> Self

where F: FnOnce() -> String,

fn log_trace(self, msg: impl Display) -> Self

fn log_trace_with<F>(self, msg: F) -> Self

where F: FnOnce() -> String,

Implementors