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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) 2016-2020 VMware, Inc. or its affiliates. All rights reserved.
defmodule RabbitMQ.CLI.Core.Config do
alias RabbitMQ.CLI.{
CommandBehaviour,
FormatterBehaviour,
PrinterBehaviour
}
alias RabbitMQ.CLI.Core.Helpers
#
# Environment
#
def get_option(name, opts \\ %{}) do
raw_option =
opts[name] ||
get_system_option(name, opts) ||
default(name)
normalise(name, raw_option)
end
def output_less?(opts) do
Map.get(opts, :silent, false) || Map.get(opts, :quiet, false)
end
def normalise(:node, nil), do: nil
def normalise(:node, node) when not is_atom(node) do
RabbitMQ.CLI.Core.DataCoercion.to_atom(node)
end
def normalise(:erlang_cookie, nil), do: nil
def normalise(:erlang_cookie, c) when not is_atom(c) do
RabbitMQ.CLI.Core.DataCoercion.to_atom(c)
end
def normalise(:longnames, true), do: :longnames
def normalise(:longnames, "true"), do: :longnames
def normalise(:longnames, 'true'), do: :longnames
def normalise(:longnames, "\"true\""), do: :longnames
def normalise(:longnames, _val), do: :shortnames
def normalise(_, value), do: value
def get_system_option(:script_name, _) do
Path.basename(:escript.script_name())
|> Path.rootname()
|> String.to_atom()
end
def get_system_option(:aliases_file, _) do
System.get_env("RABBITMQ_CLI_ALIASES_FILE")
end
def get_system_option(:erlang_cookie, _) do
System.get_env("RABBITMQ_ERLANG_COOKIE")
end
def get_system_option(:node, %{offline: true} = opts) do
remote_node =
case opts[:node] do
nil -> nil
val -> Helpers.normalise_node_option(val, opts[:longnames], opts)
end
context = get_env_context(remote_node, true)
get_val_from_env_context(context, :node)
end
def get_system_option(:node, opts) do
remote_node =
case opts[:node] do
nil -> nil
val -> Helpers.normalise_node_option(val, opts[:longnames], opts)
end
context = get_env_context(remote_node, false)
get_val_from_env_context(context, :node)
end
def get_system_option(name, opts) do
work_offline = opts[:offline] == true
remote_node =
case name do
:longnames -> nil
:rabbitmq_home -> nil
_ -> node_flag_or_default(opts)
end
context = get_env_context(remote_node, work_offline)
val0 = get_val_from_env_context(context, name)
val =
cond do
remote_node != nil and
val0 == :undefined and
(name == :mnesia_dir or name == :feature_flags_file or name == :plugins_dir or
name == :enabled_plugins_file) ->
context1 = get_env_context(nil, true)
get_val_from_env_context(context1, name)
true ->
val0
end
case val do
:undefined -> nil
_ -> val
end
end
def get_env_context(nil, _) do
:rabbit_env.get_context()
end
def get_env_context(remote_node, work_offline) do
case work_offline do
true -> :rabbit_env.get_context(:offline)
false -> :rabbit_env.get_context(remote_node)
end
end
def get_val_from_env_context(context, name) do
case name do
:node -> context[:nodename]
:longnames -> context[:nodename_type] == :longnames
:rabbitmq_home -> context[:rabbitmq_home]
:mnesia_dir -> context[:mnesia_dir]
:plugins_dir -> context[:plugins_path]
:plugins_expand_dir -> context[:plugins_expand_dir]
:feature_flags_file -> context[:feature_flags_file]
:enabled_plugins_file -> context[:enabled_plugins_file]
end
end
def node_flag_or_default(opts) do
case opts[:node] do
nil ->
# Just in case `opts` was not normalized yet (to get the
# default node), we do it here as well.
case Helpers.normalise_node_option(opts) do
{:error, _} -> nil
{:ok, normalized_opts} -> normalized_opts[:node]
end
node ->
node
end
end
def default(:script_name), do: :rabbitmqctl
def default(:node), do: :rabbit
def default(_), do: nil
#
# Formatters and Printers
#
def get_formatter(command, %{formatter: formatter}) do
module_name = FormatterBehaviour.module_name(formatter)
case Code.ensure_loaded(module_name) do
{:module, _} -> module_name
{:error, :nofile} -> CommandBehaviour.formatter(command, default_formatter())
end
end
def get_formatter(command, _) do
CommandBehaviour.formatter(command, default_formatter())
end
def get_printer(command, %{printer: printer}) do
module_name = PrinterBehaviour.module_name(printer)
case Code.ensure_loaded(module_name) do
{:module, _} -> module_name
{:error, :nofile} -> CommandBehaviour.printer(command, default_printer())
end
end
def get_printer(command, _) do
CommandBehaviour.printer(command, default_printer())
end
def default_formatter() do
RabbitMQ.CLI.Formatters.String
end
def default_printer() do
RabbitMQ.CLI.Printers.StdIO
end
end
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