FilterInject | R Documentation |
Inject arbitrary values into all LogEvents processed by a Logger/Appender. It is recommended to use filters that modify LogEvents only with Loggers, but they will also work with Appenders.
lgr::EventFilter
-> FilterInject
values
a named list
of values to be injected into each
LogEvent processed by this filter
new()
Initialize a new FilterInject
FilterInject$new(..., .list = list())
..., .list
any number of named R objects that will be injected as
custom fields into all LogEvents processed by the
Appender/Logger that this filter is attached to. See also
with_log_value()
.
clone()
The objects of this class are cloneable with this method.
FilterInject$clone(deep = FALSE)
deep
Whether to make a deep clone.
lg <- get_logger("test")
analyse <- function(){
lg$add_filter(FilterInject$new(type = "analysis"), "inject")
on.exit(lg$remove_filter("inject"))
lg$error("an error with forced custom 'type'-field")
}
analyse()
lg$error("an normal error")
lg$config(NULL) # reset config
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