Trait concordium_std::HasLogger

pub trait HasLogger {
    fn init() -> Self;
    fn log_raw(&mut self, event: &[u8]) -> Result<(), LogError>;

    fn log<S: Serial>(&mut self, event: &S) -> Result<(), LogError> { ... }
}

Objects which can serve as loggers.

Logging functionality can be used by smart contracts to record events that might be of interest to external parties. These events are not used on the chain, and cannot be observed by other contracts, but they are stored by the node, and can be queried to provide information to off-chain actors.

Required methods

fn init() -> Self

Initialize a logger.

fn log_raw(&mut self, event: &[u8]) -> Result<(), LogError>

Log the given slice as-is. If logging is not successful an error will be returned.

Provided methods

fn log<S: Serial>(&mut self, event: &S) -> Result<(), LogError>

Log a serializable event by serializing it with a supplied serializer.

Implementors

impl HasLogger for Logger

#Implementations of the logger.

impl HasLogger for LogRecorder