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# frozen_string_literal: true
# Calculate max_memory size from fact 'memsize' and passed argument.
Puppet::Functions.create_function(:'memcached::max_memory') do
dispatch :max_memory do
required_param 'Any', :arg
end
def max_memory(arg)
scope = closure_scope
memsize = if scope['facts']['memory'].nil?
scope['facts']['memorysize']
else
scope['facts']['memory']['system']['total']
end
if arg && !arg.to_s.end_with?('%')
result_in_mb = arg.to_i
else
max_memory_percent = arg || '95%'
# Taken from puppetlabs-stdlib to_bytes() function
value, suffix = *%r{([0-9.e+-]*)\s*([^bB]?)}.match(memsize)[1, 2]
value = value.to_f
case suffix
when 'k' then value *= (1 << 10)
when 'M' then value *= (1 << 20)
when 'G' then value *= (1 << 30)
when 'T' then value *= (1 << 40)
when 'E' then value *= (1 << 50)
else raise Puppet::ParseError, "memcached_max_memory(): Unknown suffix #{suffix}"
end
value = value.to_i
result_in_mb = ((value / (1 << 20)) * (max_memory_percent.to_f / 100.0)).floor
end
result_in_mb
end
end
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