discourse/lib/mem_info.rb
Ted Johansson ea5c3a3bdc
DEV: Move non scheduled problem checks to classes ()
In AdminDashboardData we have a bunch of problem checks implemented as methods on that class. This PR absolves it of the responsibility by promoting each of those checks to a first class ProblemCheck. This way each of them can have their own priority and arbitrary functionality can be isolated in its own class.

Think "extract class" refactoring over and over. Since they were all moved we can also get rid of the @@problem_syms class variable which was basically the old version of the registry now replaced by ProblemCheck.realtime.

In addition AdminDashboardData::Problem value object has been entirely replaced with the new ProblemCheck::Problem (with compatible API).

Lastly, I added some RSpec matchers to simplify testing of problem checks and provide helpful error messages when assertions fail.
2024-03-14 10:55:01 +08:00

26 lines
577 B
Ruby

# frozen_string_literal: true
class MemInfo
# Total memory in kb. On Mac OS uses "sysctl", elsewhere expects the system has /proc/meminfo.
# Returns nil if it cannot be determined.
def mem_total
@mem_total ||=
begin
system = `uname`.strip
if system == "Darwin"
s = `sysctl -n hw.memsize`.strip
s.to_i / 1.kilobyte
else
s = `grep MemTotal /proc/meminfo`
/(\d+)/.match(s)[0].try(:to_i)
end
rescue StandardError
nil
end
end
def unknown?
mem_total.nil?
end
end