Created
June 29, 2018 18:51
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# A handler that logs the request method, resource, status code, and | |
# the time used to execute the next handler, to the given `IO`. | |
class Cove::Logger < HTTP::LogHandler | |
# Initializes this handler to log to the given `IO`. | |
def initialize(@io : IO = STDOUT) | |
end | |
def call(context) | |
elapsed = Time.measure { call_next(context) } | |
elapsed_text = elapsed_text(elapsed) | |
@io.puts " >> #{context.request.method} #{context.request.resource}" | |
@io.puts " << #{context.response.status_code} (#{elapsed_text})" | |
@io.puts " " | |
rescue e | |
@io.puts " >> #{context.request.method} #{context.request.resource} - Unhandled exception:" | |
e.inspect_with_backtrace(@io) | |
raise e | |
end | |
private def elapsed_text(elapsed) | |
minutes = elapsed.total_minutes | |
return "#{minutes.round(2)}m" if minutes >= 1 | |
seconds = elapsed.total_seconds | |
return "#{seconds.round(2)}s" if seconds >= 1 | |
millis = elapsed.total_milliseconds | |
return "#{millis.round(2)}ms" if millis >= 1 | |
"#{(millis * 1000).round(2)}µs" | |
end | |
end |
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