Macro slog::log

macro_rules! log {
    ($lvl:expr, $l:expr, $($k:expr => $v:expr),+; $($args:tt)+ ) => { ... };
    ($lvl:expr, $l:expr, $msg:expr) => { ... };
    ($lvl:expr, $l:expr, $msg:expr; $($k:expr => $v:expr),+) => { ... };
    ($lvl:expr, $l:expr, $msg:expr; $($k:expr => $v:expr),+,) => { ... };
    ($lvl:expr, $l:expr, $($args:tt)+) => { ... };
}

Log message of a given level

Use wrappers error!, warn! etc. instead

The max_level_* features can be used to statically disable logging at various levels.

Use longer name version macros if you want to prevent clash with legacy log crate macro names (see examples/alternative_names.rs).

The following invocations are supported.

Simple:

#[macro_use]
extern crate slog;

fn main() {
    let drain = slog::Discard;
    let root = slog::Logger::root(drain, o!("key1" => "value1", "key2" => "value2"));
    info!(root, "test info log"; "log-key" => true);
}

Note that "key" => value part is optional.

#[macro_use]
extern crate slog;

fn main() {
    let drain = slog::Discard;
    let root = slog::Logger::root(drain, o!("key1" => "value1", "key2" => "value2"));
    info!(root, "test info log");
}

Formatting support:

#[macro_use]
extern crate slog;

fn main() {
    let drain = slog::Discard;
    let root = slog::Logger::root(drain, o!("key1" => "value1", "key2" => "value2"));
    info!(root, "log-key" => true; "formatted: {}", 1);
}

Again, "key" => value is optional.

#[macro_use]
extern crate slog;

fn main() {
    let drain = slog::Discard;
    let root = slog::Logger::root(drain, o!("key1" => "value1", "key2" => "value2"));
    info!(root, "formatted: {}", 1);
}