Module logging

Substrate logging library.

This crate uses tokio’s tracing library for logging.

Structs

EventFormat

A pre-configured event formatter.

FastLocalTime

A structure which, when Displayd, will print out the current local time.

LoggerBuilder

A builder that is used to initialize the global logger.

PrefixLayer

A Layer that captures the prefix span (PREFIX_LOG_SPAN) which is then used by crate::logging::EventFormat to prefix the log lines by customizable string.

Enums

Error

Logging errors.

Constants

PREFIX_LOG_SPAN

Span name used for the logging prefix. See macro sc_tracing::logging::prefix_logs_with!

Functions

add_directives

Add directives to current directives.

get_directives

Returns the current directives.

reload_filter

Reload the logging filter with the supplied directives added to the existing directives

reset_log_filter

Resets the log filter back to the original state when the node was started.

Type Aliases

Result

Logging Result typedef.

Attribute Macros

prefix_logs_with

This prefixes all the log lines with [<name>] (after the timestamp). It works by making a tracing’s span that is propagated to all the child calls and child tasks (futures) if they are spawned properly with the SpawnHandle (see TaskManager in sc-cli) or if the futures use .in_current_span() (see tracing-futures).