85 lines
2.8 KiB
Elixir
85 lines
2.8 KiB
Elixir
## The contents of this file are subject to the Mozilla Public License
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## Version 1.1 (the "License"); you may not use this file except in
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## compliance with the License. You may obtain a copy of the License
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## at http://www.mozilla.org/MPL/
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##
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## Software distributed under the License is distributed on an "AS IS"
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## basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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## the License for the specific language governing rights and
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## limitations under the License.
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##
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## The Original Code is RabbitMQ.
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##
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## The Initial Developer of the Original Code is GoPivotal, Inc.
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## Copyright (c) 2007-2017 Pivotal Software, Inc. All rights reserved.
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defmodule RabbitMQ.CLI.DefaultOutput do
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# When `use RabbitMQ.CLI.DefaultOutput` is invoked,
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# this will define output/2 that delegates to RabbitMQ.CLI.DefaultOutput.output/3.
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defmacro __using__(_) do
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quote do
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def output(result, _opts) do
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RabbitMQ.CLI.DefaultOutput.output(result)
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end
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end
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end
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def output(result) do
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result
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|> normalize_output()
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|> format_output()
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end
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def mnesia_running_error(node_name) do
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"Mnesia is still running on node #{node_name}.\n" <>
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"Please stop RabbitMQ with rabbitmqctl stop_app first."
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end
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defp normalize_output(:ok), do: :ok
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defp normalize_output({:ok, _} = input), do: input
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defp normalize_output({:stream, _} = input), do: input
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defp normalize_output({:badrpc_multi, _, _} = input), do: {:error, input}
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defp normalize_output({:badrpc, :nodedown} = input), do: {:error, input}
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defp normalize_output({:badrpc, :timeout} = input), do: {:error, input}
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defp normalize_output({:badrpc, {:EXIT, reason}}), do: {:error, reason}
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defp normalize_output({:error, format, args})
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when (is_list(format) or is_binary(format)) and is_list(args) do
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{:error, to_string(:rabbit_misc.format(format, args))}
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end
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defp normalize_output({:error_string, string}) do
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{:error, to_string(string)}
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end
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defp normalize_output({:error, _} = input), do: input
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defp normalize_output(unknown) when is_atom(unknown), do: {:error, unknown}
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defp normalize_output({unknown, _} = input) when is_atom(unknown), do: {:error, input}
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defp normalize_output(result) when not is_atom(result), do: {:ok, result}
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defp format_output({:error, _} = result) do
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result
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end
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defp format_output(:ok) do
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:ok
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end
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defp format_output({:ok, output}) do
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case Enumerable.impl_for(output) do
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nil ->
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{:ok, output};
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## Do not streamify plain maps
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Enumerable.Map ->
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{:ok, output};
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## Do not streamify keyword lists
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Enumerable.List ->
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case Keyword.keyword?(output) do
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true -> {:ok, output};
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false -> {:stream, output}
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end;
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_ ->
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{:stream, output}
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end
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end
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defp format_output({:stream, stream}) do
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{:stream, stream}
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end
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end
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