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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) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
defmodule RabbitMQ.CLI.Ctl.Commands.EvalFileCommand do
alias RabbitMQ.CLI.Core.{DocGuide, ErlEval, ExitCodes}
alias RabbitMQ.CLI.Ctl.Commands.EvalCommand
@behaviour RabbitMQ.CLI.CommandBehaviour
use RabbitMQ.CLI.Core.MergesNoDefaults
def validate([], _) do
{:validation_failure, :not_enough_args}
end
def validate(["" | _], _) do
{:validation_failure, "File path must not be blank"}
end
def validate([file_path], _) do
case File.read(file_path) do
{:ok, expr} ->
case ErlEval.parse_expr(expr) do
{:ok, _} -> :ok
{:error, err} -> {:validation_failure, err}
end
{:error, :enoent} ->
{:validation_failure, "File #{file_path} does not exist"}
{:error, :eacces} ->
{:validation_failure, "Insufficient permissions to read file #{file_path}"}
{:error, err} ->
{:validation_failure, err}
end
end
def run([file_path], opts) do
case File.read(file_path) do
{:ok, expr} -> EvalCommand.run([expr], opts)
{:error, err} -> {:error, err}
end
end
def output({:error, msg}, _) do
{:error, ExitCodes.exit_dataerr(), "Evaluation failed: #{msg}"}
end
use RabbitMQ.CLI.DefaultOutput
def formatter(), do: RabbitMQ.CLI.Formatters.Erlang
def usage, do: "eval_file <file path>"
def usage_additional() do
[
["<file path>", "Path to the file to evaluate"]
]
end
def usage_doc_guides() do
[
DocGuide.cli(),
DocGuide.monitoring(),
DocGuide.troubleshooting()
]
end
def help_section(), do: :operations
def description(), do: "Evaluates a file that contains a snippet of Erlang code on the target node"
def banner(_, _), do: nil
end
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