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## This Source Code Form is subject to the terms of the Mozilla Public
## License, v. 2.0. If a copy of the MPL was not distributed with this
## file, You can obtain one at https://mozilla.org/MPL/2.0/.
##
## Copyright (c) 2007-2023 Broadcom. All Rights Reserved. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. All rights reserved.
defmodule RabbitMQ.CLI.InformationUnit do
require MapSet
@kilobyte_bytes 1000
@megabyte_bytes @kilobyte_bytes * 1000
@gigabyte_bytes @megabyte_bytes * 1000
@terabyte_bytes @gigabyte_bytes * 1000
@petabyte_bytes @terabyte_bytes * 1000
@kibibyte_bytes 1024
@mebibyte_bytes @kibibyte_bytes * 1024
@gibibyte_bytes @mebibyte_bytes * 1024
@tebibyte_bytes @gibibyte_bytes * 1024
@pebibyte_bytes @tebibyte_bytes * 1024
def known_units() do
MapSet.new([
"bytes",
"k",
"kb",
"ki",
"kib",
"kilobytes",
"m",
"mb",
"mi",
"mib",
"megabytes",
"g",
"gb",
"gi",
"gib",
"gigabytes",
"t",
"tb",
"ti",
"tib",
"terabytes",
"p",
"pb",
"pi",
"pib",
"petabytes"
])
end
def parse(val) do
:rabbit_resource_monitor_misc.parse_information_unit(val)
end
def convert(bytes, "bytes") when is_number(bytes) do
bytes
end
def convert(bytes, unit) when is_number(bytes) do
do_convert(bytes, String.downcase(unit))
end
def convert(:unknown, _) do
:unknown
end
def known_unit?(val) do
MapSet.member?(known_units(), String.downcase(val))
end
defp do_convert(bytes, "kb") do
Float.round(bytes / @kilobyte_bytes, 4)
end
defp do_convert(bytes, "k"), do: do_convert(bytes, "kb")
defp do_convert(bytes, "ki") do
Float.round(bytes / @kibibyte_bytes, 4)
end
defp do_convert(bytes, "kib"), do: do_convert(bytes, "ki")
defp do_convert(bytes, "kilobytes"), do: do_convert(bytes, "kb")
defp do_convert(bytes, "mb") do
Float.round(bytes / @megabyte_bytes, 4)
end
defp do_convert(bytes, "m"), do: do_convert(bytes, "mb")
defp do_convert(bytes, "mi") do
Float.round(bytes / @mebibyte_bytes, 4)
end
defp do_convert(bytes, "mib"), do: do_convert(bytes, "mi")
defp do_convert(bytes, "megabytes"), do: do_convert(bytes, "mb")
defp do_convert(bytes, "gb") do
Float.round(bytes / @gigabyte_bytes, 4)
end
defp do_convert(bytes, "g"), do: do_convert(bytes, "gb")
defp do_convert(bytes, "gi") do
Float.round(bytes / @gigabyte_bytes, 4)
end
defp do_convert(bytes, "gib"), do: do_convert(bytes, "gi")
defp do_convert(bytes, "gigabytes"), do: do_convert(bytes, "gb")
defp do_convert(bytes, "tb") do
Float.round(bytes / @terabyte_bytes, 4)
end
defp do_convert(bytes, "t"), do: do_convert(bytes, "tb")
defp do_convert(bytes, "ti") do
Float.round(bytes / @tebibyte_bytes, 4)
end
defp do_convert(bytes, "tib"), do: do_convert(bytes, "ti")
defp do_convert(bytes, "terabytes"), do: do_convert(bytes, "tb")
defp do_convert(bytes, "pb") do
Float.round(bytes / @petabyte_bytes, 4)
end
defp do_convert(bytes, "p"), do: do_convert(bytes, "pb")
defp do_convert(bytes, "pi") do
Float.round(bytes / @pebibyte_bytes, 4)
end
defp do_convert(bytes, "pib"), do: do_convert(bytes, "pi")
defp do_convert(bytes, "petabytes"), do: do_convert(bytes, "pb")
end
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