2 unstable releases
0.2.0 | Jul 4, 2023 |
---|---|
0.1.0 | May 10, 2023 |
#43 in #circular-buffer
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Used in ic-canister-serve
9KB
130 lines
IC Canister Log
This package provides a basic logging library for smart contracts running on the Internet Computer (also known as canisters).
Usage
Macros declare_log_buffer
and log
are the core library interface.
The declare_log_buffer
macros creates a circular buffer of messages with the specified capacity.
The log
macro formats and appends messages to a buffer.
You can extract messages from the log buffer using the export
function.
use ic_canister_log::{declare_log_buffer, export, log};
// Keep up to 100 last messages.
declare_log_buffer!(name = LOG, capacity = 100);
fn sum_and_log(x: u64, y: u64) -> u64 {
let result = x.saturating_add(y);
log!(LOG, "{} + {} = {}", x, y, result);
result
}
fn print_log_entries() {
for entry in export(&LOG) {
println!("{}:{} {}", entry.file, entry.line, entry.message);
}
}
Dependencies
~0.3–1MB
~21K SLoC