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Elixir Z-Wave library
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Files
lib/grizzly/zipgateway/supervisor.ex
defmodule Grizzly.ZIPGateway.Supervisor do
@moduledoc false
# Supervisor for the `zipgateway` system process
use Supervisor
alias Grizzly.{Indicator, Options}
alias Grizzly.ZIPGateway.Config
require Logger
@zgw_eeprom_to_sqlite "/usr/bin/zgw_eeprom_to_sqlite"
@spec start_link(Options.t()) :: Supervisor.on_start()
def start_link(options) do
Supervisor.start_link(__MODULE__, options, name: __MODULE__)
end
@impl Supervisor
def init(options) do
Supervisor.init(child_specs(options), strategy: :one_for_one)
end
defp child_specs(options) do
if options.run_zipgateway do
zipgateway_child_specs(options)
else
[]
end
end
defp zipgateway_child_specs(options) do
try_migrate_eeprom_to_sql(options)
:ok = system_checks(options)
:ok =
options
|> Options.to_zipgateway_config(use_database?())
|> Config.ensure_files()
|> Config.write(options.zipgateway_config_path)
_ = System.cmd("modprobe", ["tun"])
priv = Application.app_dir(:grizzly, "priv")
beam_notify_options = [
name: "grizzly indicator",
path: "/tmp/grizzly_beam_notify_socket",
dispatcher: &Indicator.handle_event(&1, &2, options.indicator_handler)
]
[
{BEAMNotify, beam_notify_options},
{MuonTrap.Daemon,
[
options.zipgateway_binary,
["-c", options.zipgateway_config_path, "-s", options.serial_port],
[cd: priv, log_output: :debug]
]}
]
end
defp try_migrate_eeprom_to_sql(%{eeprom_file: eeprom_file, database_file: database_file}) do
if use_database?() and
eeprom_file != nil and
database_file != nil and
not File.exists?(database_file) and
File.exists?(eeprom_file) do
run_eeprom_to_sql_prog(eeprom_file, database_file)
end
:ok
end
defp use_database?() do
File.exists?(@zgw_eeprom_to_sqlite)
end
defp run_eeprom_to_sql_prog(eeprom_file, database_file) do
Logger.info("Running #{@zgw_eeprom_to_sqlite} -e #{eeprom_file} -d #{database_file}")
case System.cmd(@zgw_eeprom_to_sqlite, ["-e", eeprom_file, "-d", database_file]) do
{message, 0} ->
Logger.info("Successfully migrated EEPROM to DB: #{inspect(message)}")
:ok
{message, _error_no} ->
Logger.error("EEPROM to DB migration failed: #{inspect(message)}")
end
:ok
end
defp system_checks(options) do
:ok = check_serial_port(options.serial_port)
:ok = find_zipgateway_bin(options.zipgateway_binary)
:ok
end
defp check_serial_port(serial_port) do
if File.exists?(serial_port) do
:ok
else
raise ArgumentError, """
It looks like the serial port: #{inspect(serial_port)} is not available
If you are using an USB dongle ensure that you have plugged it in and that
you have configured the correct serial port.
If you are using a Z-Wave controller embedded onto your system make sure you
are using the correct serial port in the configuration.
"""
end
end
defp find_zipgateway_bin(zipgateway_path) do
case File.stat(zipgateway_path) do
{:error, _posix} ->
raise ArgumentError, """
Cannot find the zipgateway executable (looked for it in #{inspect(zipgateway_path)})
If it is located somewhere else, please pass the path to Grizzly.Supervisor
```
Grizzly.Supervisor.start_link(zipgateway_path: <path>)
```
```
{Grizzly.Supervisor, [zipgateway_path: <path>]}
```
"""
{:ok, _stat} ->
:ok
end
end
end