Struct WasmLoggerBuilder

pub struct WasmLoggerBuilder { /* private fields */ }

The Wasm logger builder.

Build logger for the Fluence network, allows specifying target map and log level while building.

Implementations

impl WasmLoggerBuilder

pub fn new() -> Self

Initializes a builder of the global logger. Set log level based on the WASM_LOG environment variable if it set, or [[WASM_DEFAULT_LOG_LEVEL]] otherwise. It is an initial method in this builder chain, please note, that logger wouldn’t work without subsequent build() call.

pub fn with_log_level(self, level: LevelFilter) -> Self

Set the log level.

pub fn with_target_map(self, map: TargetMap) -> Self

Set mapping between logging targets and numbers. Used to efficiently enable & disable logs per target on the host.

pub fn filter(self, module_name: impl Into<String>, level: LevelFilter) -> Self

pub fn build(self) -> Result<(), SetLoggerError>

Build the real logger.

This method is a last one in this builder chain and MUST be called to set logger up. Returns a error

    logger::WasmLoggerBuilder::new()
        .with_log_level(log::LevelFilter::Trace)
        .with_target_map(<_>::default())
        .build()
        .unwrap();