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grizzly
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Elixir Z-Wave library
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Files
lib/grizzly/connection.ex
defmodule Grizzly.Connection do
@moduledoc false
require Logger
alias Grizzly.Connections.Supervisor
alias Grizzly.Connections.{SyncConnection, AsyncConnection}
alias Grizzly.ZWave
alias Grizzly.ZWave.Command
@type opt() :: {:mode, :sync | :async} | {:owner, pid()}
@doc """
Open a connection to a node
If the DTLS connection cannot be opened after some time this will return
`{:error, :timeout}`
"""
@spec open(ZWave.node_id(), [opt()]) :: {:ok, pid()} | {:error, :timeout}
def open(node_id, opts \\ []) do
Supervisor.start_connection(node_id, opts)
end
@doc """
Close a connection to a Z-Wave node
"""
@spec close(ZWave.node_id()) :: :ok
def close(node_id) do
# only close sync connections because async connections
# are only used during inclusion and are short lived. Also,
# in Grizzly.send_command/4 we wont allow sending anything during
# an inclusion so anything that would want a connection closed would
# not hit this point unless there a bug. So, lets assume that
# this is only valid for sync connections. If this assumption is false
# we should get really active errors that a user can share in a bug
# report to help us identify how the assumption is false and we can
# explore fixing that.
SyncConnection.close(node_id)
end
@doc """
Send a `Grizzly.ZWave.Command` to a Z-Wave device
"""
@spec send_command(ZWave.node_id(), Command.t(), [Grizzly.command_opt()]) ::
Grizzly.send_command_response()
def send_command(node_id, command, opts \\ []) do
_ = Logger.debug("Sending: #{inspect(command)}")
case Keyword.get(opts, :type, :sync) do
:sync ->
SyncConnection.send_command(node_id, command, opts)
:async ->
AsyncConnection.send_command(node_id, command, opts)
end
end
end