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triviallogger.jl
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triviallogger.jl
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using Logging
import Logging: handle_message, shouldlog, min_enabled_level
struct TrivialLogger <: AbstractLogger
io::IO
min_level::LogLevel
end
function TrivialLogger(
io::IO=stderr,
level=Logging.Info)
TrivialLogger(io, level)
end
function min_enabled_level(log::TrivialLogger)
log.min_level
end
function shouldlog(
logger::TrivialLogger,
level, _module, group, id)
true
end
function handle_message(
logger::TrivialLogger,
level::LogLevel,
message::AbstractString,
_module::Module,
group::Symbol,
id::Symbol,
file::AbstractString,
line; kwargs...)
io = logger.io
println(io, message)
for (key, value) in kwargs
println(io, " ", key, " = ", value)
end
end
# Trivial example
# julia> x = 12
# 12
# julia> msg = "world"
# "world"
# julia> open("log.txt", "w+") do io
# logger = TrivialLogger(io, Logging.Info)
# with_logger(logger) do
# @info "hello" msg x
# end
# end
# julia> readlines("log.txt")
# 3-element Vector{String}:
# "hello"
# " msg = world"
# " x = 12"