matrix2mqtt: init

This commit is contained in:
Luke Granger-Brown 2024-10-20 23:20:48 +01:00
parent b955549fe5
commit 10e1181c0b
10 changed files with 1258 additions and 0 deletions

View file

@ -25,6 +25,7 @@ syntax: regexp
^go/trains/.*/start.sh$
^go/trains/.*/lukegb-trains.json$
^py/icalfilter/config/.*$
^rust/.*/target/.*$
^(.+/)?result(-([a-z]+|[0-9]+))?$
syntax: glob

View file

@ -38,6 +38,7 @@ let
};
factorio = depot.ops.factorio;
home-manager = depot.ops.home-manager-ext.built;
rust = depot.rust;
};
aarch64-linux = builtins.removeAttrs x86_64-linux [ "home-manager" "pkg-authentik" "web-barf" ] // {
pkgs = builtins.removeAttrs x86_64-linux.pkgs [ "lutris" "plex-pass" "sheepshaver" "fr24feed" "javaws-env" "copybara" ];

View file

@ -22,6 +22,7 @@ in fix (self:
web = import ./web ch;
go = import ./go ch;
py = import ./py ch;
rust = import ./rust ch;
version = import ./version.nix ch;

View file

@ -39,6 +39,7 @@ in {
homeassistant = {
password = "homeassistant";
acl = [
"readwrite matrix2mqtt/#"
"readwrite zigbee2mqtt/#"
"readwrite homeassistant/#"
];

9
rust/default.nix Normal file
View file

@ -0,0 +1,9 @@
# SPDX-FileCopyrightText: 2024 Luke Granger-Brown <depot@lukegb.com>
#
# SPDX-License-Identifier: Apache-2.0
args:
{
matrix2mqtt = import ./matrix2mqtt args;
}

702
rust/matrix2mqtt/Cargo.lock generated Normal file
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@ -0,0 +1,702 @@
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@ -0,0 +1,9 @@
[package]
name = "matrix2mqtt"
version = "0.1.0"
edition = "2021"
[dependencies]
tokio = { version = "1", features = ["full"] }
rumqttc = "0.24.0"
futures = "0.3.31"

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@ -0,0 +1,7 @@
# SPDX-FileCopyrightText: 2024 Luke Granger-Brown <depot@lukegb.com>
#
# SPDX-License-Identifier: Apache-2.0
{ depot, ... }:
depot.pkgs.callPackage ./package.nix { }

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@ -0,0 +1,21 @@
# SPDX-FileCopyrightText: 2024 Luke Granger-Brown <depot@lukegb.com>
#
# SPDX-License-Identifier: Apache-2.0
{ lib, rustPlatform }:
rustPlatform.buildRustPackage rec {
pname = "matrix2mqtt";
version = "unstable";
src = lib.fileset.toSource {
root = ./.;
fileset = lib.fileset.unions [
./Cargo.toml
./Cargo.lock
./src
];
};
cargoHash = "sha256-0R6hN5cNlj8+UzZ9oM4f74UGGCS1AKlDgHaQyKq/y0Q=";
}

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@ -0,0 +1,506 @@
use futures::future;
use futures::FutureExt;
use std::error::Error;
use std::fmt;
use std::str::FromStr;
use std::time::Duration;
use tokio::io::AsyncBufReadExt;
use tokio::io::AsyncRead;
use tokio::io::AsyncWriteExt;
use tokio::io::BufReader;
use tokio::net::TcpStream;
use tokio::select;
use tokio::sync::broadcast;
use tokio::sync::mpsc;
use tokio::task::JoinSet;
async fn wait_for_line<R: AsyncRead + Unpin>(
reader: &mut BufReader<R>,
want: &str,
) -> Result<(), Box<dyn Error + Send + Sync>> {
loop {
let mut line = String::new();
reader.read_line(&mut line).await?;
if line == want {
return Ok(());
}
continue;
}
}
#[derive(Debug)]
enum MatrixCommand {
GetCurrentMappings,
SetOutput(MatrixDestination, MatrixSource),
SetOutputCEC(MatrixDestination, bool),
}
#[derive(Clone, Debug, PartialEq, Eq)]
enum MatrixSource {
HDMI1,
HDMI2,
HDMI3,
HDMI4,
}
impl MatrixSource {
fn matrix_name(self: &MatrixSource) -> &'static str {
match self {
MatrixSource::HDMI1 => "hdmiin1",
MatrixSource::HDMI2 => "hdmiin2",
MatrixSource::HDMI3 => "hdmiin3",
MatrixSource::HDMI4 => "hdmiin4",
}
}
fn friendly_name(self: &MatrixSource) -> &'static str {
match self {
MatrixSource::HDMI1 => "SHIELD",
MatrixSource::HDMI2 => "totoro",
MatrixSource::HDMI3 => "PS5",
MatrixSource::HDMI4 => "Mac Mini",
}
}
}
#[derive(Debug, PartialEq, Eq)]
struct ParseMatrixPortError;
impl fmt::Display for ParseMatrixPortError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "ParseMatrixPortError")
}
}
impl Error for ParseMatrixPortError {}
#[derive(Debug, PartialEq, Eq)]
struct UnexpectedMatrixDestinationError;
impl fmt::Display for UnexpectedMatrixDestinationError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "UnexpectedMatrixDestinationError")
}
}
impl Error for UnexpectedMatrixDestinationError {}
impl FromStr for MatrixSource {
type Err = ParseMatrixPortError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"hdmiin1" => Ok(MatrixSource::HDMI1),
"hdmiin2" => Ok(MatrixSource::HDMI2),
"hdmiin3" => Ok(MatrixSource::HDMI3),
"hdmiin4" => Ok(MatrixSource::HDMI4),
_ => Err(ParseMatrixPortError),
}
}
}
#[derive(Clone, Debug, PartialEq, Eq)]
enum MatrixDestination {
HDMI1,
HDMI2,
HDMI3,
HDMI4,
}
impl MatrixDestination {
fn matrix_name(self: &MatrixDestination) -> &'static str {
match self {
MatrixDestination::HDMI1 => "hdmiout1",
MatrixDestination::HDMI2 => "hdmiout2",
MatrixDestination::HDMI3 => "hdmiout3",
MatrixDestination::HDMI4 => "hdmiout4",
}
}
fn index(self: &MatrixDestination) -> u8 {
match self {
MatrixDestination::HDMI1 => 1,
MatrixDestination::HDMI2 => 2,
MatrixDestination::HDMI3 => 3,
MatrixDestination::HDMI4 => 4,
}
}
fn friendly_name(self: &MatrixDestination) -> &'static str {
match self {
MatrixDestination::HDMI1 => "Projector",
MatrixDestination::HDMI2 => "Sound Bar",
MatrixDestination::HDMI3 => "Desk Monitor",
MatrixDestination::HDMI4 => "unused",
}
}
}
impl FromStr for MatrixDestination {
type Err = ParseMatrixPortError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"hdmiout1" => Ok(MatrixDestination::HDMI1),
"hdmiout2" => Ok(MatrixDestination::HDMI2),
"hdmiout3" => Ok(MatrixDestination::HDMI3),
"hdmiout4" => Ok(MatrixDestination::HDMI4),
_ => Err(ParseMatrixPortError),
}
}
}
#[derive(Clone, Debug)]
struct MatrixMappings {
hdmiout1: MatrixSource,
hdmiout2: MatrixSource,
hdmiout3: MatrixSource,
hdmiout4: MatrixSource,
}
#[derive(Clone, Debug)]
enum MatrixResponse {
CurrentMappings(MatrixMappings),
}
async fn read_single_mapping(
reader: &mut BufReader<TcpStream>,
expected: MatrixDestination,
) -> Result<MatrixSource, Box<dyn Error + Send + Sync>> {
let mut line = String::new();
reader.read_line(&mut line).await?;
let splitter = line
.strip_prefix("MP ")
.and_then(|s| Some(s.split_whitespace()))
.ok_or(ParseMatrixPortError)?
.collect::<Vec<&str>>();
if splitter.len() != 2 {
return Err(Box::new(ParseMatrixPortError));
}
let src = MatrixSource::from_str(splitter[0])?;
let dst = MatrixDestination::from_str(splitter[1])?;
if dst != expected {
return Err(Box::new(UnexpectedMatrixDestinationError));
}
Ok(src)
}
async fn query_mappings(
reader: &mut BufReader<TcpStream>,
response_tx: &mut broadcast::Sender<MatrixResponse>,
) -> Result<(), Box<dyn Error + Send + Sync>> {
reader.write_all(b"GET MP ALL\r\n").await?;
let mappings = MatrixMappings {
hdmiout1: read_single_mapping(reader, MatrixDestination::HDMI1).await?,
hdmiout2: read_single_mapping(reader, MatrixDestination::HDMI2).await?,
hdmiout3: read_single_mapping(reader, MatrixDestination::HDMI3).await?,
hdmiout4: read_single_mapping(reader, MatrixDestination::HDMI4).await?,
};
response_tx.send(MatrixResponse::CurrentMappings(mappings))?;
Ok(())
}
async fn handle_matrix_telnet(
socket: TcpStream,
command_rx: &mut mpsc::Receiver<MatrixCommand>,
response_tx: &mut broadcast::Sender<MatrixResponse>,
) -> Result<(), Box<dyn Error + Send + Sync>> {
let mut stream = BufReader::new(socket);
// Wait for the hello.
println!("awaiting hello");
wait_for_line(&mut stream, "Welcome to the 4KMX44-H2 Matrix!\r\n").await?;
println!("matrix ready!");
while let Some(msg) = command_rx.recv().await {
println!("got command {:#?}", msg);
match msg {
MatrixCommand::GetCurrentMappings => {
query_mappings(&mut stream, response_tx).await?;
}
MatrixCommand::SetOutput(destination, source) => {
stream
.write_all(
format!(
"SET SW {} {}\r\n",
source.matrix_name(),
destination.matrix_name()
)
.as_bytes(),
)
.await?;
let expect = format!(
"SW {} {}\r\n",
source.matrix_name(),
destination.matrix_name()
);
wait_for_line(&mut stream, &expect).await?;
query_mappings(&mut stream, response_tx).await?;
}
MatrixCommand::SetOutputCEC(destination, on_or_off) => {
let on_or_off_str = if on_or_off { "ON" } else { "OFF" };
stream
.write_all(
format!(
"SET CEC_PWR {} {}\r\n",
destination.matrix_name(),
on_or_off_str,
)
.as_bytes(),
)
.await?;
let expect = format!(
"CEC_PWR {} {}\r\n",
destination.matrix_name(),
on_or_off_str,
);
wait_for_line(&mut stream, &expect).await?;
}
}
}
println!("process terminating...");
Ok(())
}
const TOPIC_PREFIX: &str = "matrix2mqtt/lukes-bedroom";
async fn handle_publish(
p: &rumqttc::Publish,
matrix_command_tx: &mut mpsc::Sender<MatrixCommand>,
) -> Result<(), Box<dyn Error + Send + Sync>> {
if let Some(destination_str) = p
.topic
.strip_prefix(TOPIC_PREFIX)
.and_then(|topic| topic.strip_prefix("/"))
.and_then(|topic| topic.strip_suffix("/cec/set"))
{
let destination = MatrixDestination::from_str(destination_str)?;
match std::str::from_utf8(&p.payload)? {
"ON" => {
println!("asked to turn {:#?} on", destination);
matrix_command_tx
.send(MatrixCommand::SetOutputCEC(destination, true))
.await?;
},
"OFF" => {
println!("asked to turn {:#?} off", destination);
matrix_command_tx
.send(MatrixCommand::SetOutputCEC(destination, false))
.await?;
},
s => {
println!("asked to set {:#?} to unknown value {}", destination, s)
},
}
} else if let Some(destination_str) = p
.topic
.strip_prefix(TOPIC_PREFIX)
.and_then(|topic| topic.strip_prefix("/"))
.and_then(|topic| topic.strip_suffix("/set"))
{
let destination = MatrixDestination::from_str(destination_str)?;
let source_str = std::str::from_utf8(&p.payload)?;
let source = MatrixSource::from_str(source_str)?;
println!("asked to set {:#?} to {:#?}", destination, source);
matrix_command_tx
.send(MatrixCommand::SetOutput(destination, source))
.await?;
}
Ok(())
}
async fn publish_config(
client: &rumqttc::AsyncClient,
destination: MatrixDestination,
) -> Result<(), Box<dyn Error + Send + Sync>> {
client
.publish(
format!(
"homeassistant/select/matrix_{}/config",
destination.matrix_name()
),
rumqttc::QoS::AtLeastOnce,
true,
format!(
r#"{{
"name": "HDMI {index}: {friendly_name}",
"device": {{
"identifiers": ["192.168.1.200"],
"name": "HDMI Matrix"
}},
"device_class": "select",
"state_topic": "{topic_prefix}/{matrix_name}/get",
"command_topic": "{topic_prefix}/{matrix_name}/set",
"icon": "mdi:hdmi-port",
"entity_category": "config",
"unique_id": "{topic_prefix}/{matrix_name}",
"retain": false,
"options": [
"{option1_friendly}",
"{option2_friendly}",
"{option3_friendly}",
"{option4_friendly}"
],
"value_template": "{{% set lookup = {{'hdmiin1': '{option1_friendly}', 'hdmiin2': '{option2_friendly}', 'hdmiin3': '{option3_friendly}', 'hdmiin4': '{option4_friendly}'}} %}}{{{{ lookup[value] }}}}",
"command_template": "{{% set lookup = {{'{option1_friendly}': 'hdmiin1', '{option2_friendly}': 'hdmiin2', '{option3_friendly}': 'hdmiin3', '{option4_friendly}': 'hdmiin4'}} %}}{{{{ lookup[value] }}}}"
}}"#,
index = destination.index(),
friendly_name = destination.friendly_name(),
topic_prefix = TOPIC_PREFIX,
matrix_name = destination.matrix_name(),
option1_friendly = MatrixSource::HDMI1.friendly_name(),
option2_friendly = MatrixSource::HDMI2.friendly_name(),
option3_friendly = MatrixSource::HDMI3.friendly_name(),
option4_friendly = MatrixSource::HDMI4.friendly_name(),
)
.as_bytes(),
)
.await?;
client
.publish(
format!(
"homeassistant/switch/matrix_{}_cec/config",
destination.matrix_name()
),
rumqttc::QoS::AtLeastOnce,
true,
format!(
r#"{{
"name": "HDMI {index}: {friendly_name} - CEC Power",
"device": {{
"identifiers": ["192.168.1.200"],
"name": "HDMI Matrix"
}},
"device_class": "switch",
"command_topic": "{topic_prefix}/{matrix_name}/cec/set",
"state_topic": "{topic_prefix}/{matrix_name}/cec/get",
"unique_id": "{topic_prefix}/{matrix_name}/cec",
"retain": false
}}"#,
index = destination.index(),
friendly_name = destination.friendly_name(),
topic_prefix = TOPIC_PREFIX,
matrix_name = destination.matrix_name(),
)
.as_bytes(),
)
.await?;
Ok(())
}
async fn select_all<I, T, E>(futures: Vec<I>) -> Result<(), E>
where
I: futures::Future<Output = Result<T, E>> + Unpin,
{
let mut fvec = futures;
while fvec.len() > 0 {
let (item_resolved, _, remaining_futures) = future::select_all(fvec).await;
item_resolved?;
fvec = remaining_futures;
}
Ok(())
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
let mut set = JoinSet::new();
let (matrix_command_tx, mut matrix_command_rx) = mpsc::channel(32);
let (mut matrix_response_tx, mut matrix_response_rx) = broadcast::channel(32);
let mut mqtt_matrix_command_tx = matrix_command_tx.clone();
set.spawn(async move {
let mut mqttoptions = rumqttc::MqttOptions::new("matrix2mqtt", "localhost", 1883);
mqttoptions.set_keep_alive(Duration::from_secs(5));
mqttoptions.set_credentials("matrix2mqtt", "matrix2mqtt");
let (client, mut connection) = rumqttc::AsyncClient::new(mqttoptions, 10);
select_all(vec![
client.subscribe(format!("{}/+/set", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce).boxed(),
client.subscribe(format!("{}/+/cec/set", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce).boxed(),
]).await?;
// Publish Home Assistant discovery messages.
println!("publishing Home Assistant discovery messages");
select_all(vec![
publish_config(&client, MatrixDestination::HDMI1).boxed(),
publish_config(&client, MatrixDestination::HDMI2).boxed(),
publish_config(&client, MatrixDestination::HDMI3).boxed(),
publish_config(&client, MatrixDestination::HDMI4).boxed(),
]).await?;
println!("done with HA startup!");
loop {
select! {
notification = connection.poll() => {
match notification? {
rumqttc::Event::Incoming(rumqttc::Incoming::Publish(p)) => {
match handle_publish(&p, &mut mqtt_matrix_command_tx).await {
Ok(_) => {},
Err(e) => println!("failed to handle event {:#?}: {}", p, e),
}
},
_ => {},
}
},
Ok(matrix_response) = matrix_response_rx.recv() => {
match matrix_response {
MatrixResponse::CurrentMappings(mappings) => {
println!("publishing mappings {:#?} to MQTT", mappings);
select_all(vec![
client.publish(format!("{}/hdmiout1/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout1.matrix_name()).boxed(),
client.publish(format!("{}/hdmiout2/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout2.matrix_name()).boxed(),
client.publish(format!("{}/hdmiout3/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout3.matrix_name()).boxed(),
client.publish(format!("{}/hdmiout4/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout4.matrix_name()).boxed(),
]).await?;
println!("published mappings to MQTT");
},
}
},
}
}
});
set.spawn(async move {
let matrix_socket = TcpStream::connect("192.168.1.200:23").await?;
handle_matrix_telnet(
matrix_socket,
&mut matrix_command_rx,
&mut matrix_response_tx,
)
.await
});
let ticker_matrix_command_tx = matrix_command_tx.clone();
set.spawn(async move {
let mut interval = tokio::time::interval(Duration::from_secs(10));
loop {
interval.tick().await;
ticker_matrix_command_tx
.send(MatrixCommand::GetCurrentMappings)
.await?;
}
});
// Seed MQTT with the current mapping state.
matrix_command_tx
.send(MatrixCommand::GetCurrentMappings)
.await
.unwrap();
// Bail as soon as we get a failure.
while let Some(result) = set.join_next().await {
let _ = result?;
}
Ok(())
}