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use anyhow for errors

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This commit is contained in:
Djeeberjr 2025-06-02 15:12:59 +02:00
parent efd096a149
commit 4781570f8e
11 changed files with 72 additions and 120 deletions
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7
Cargo.lock generated
View File

@ -41,6 +41,12 @@ dependencies = [
"libc",
]
[[package]]
name = "anyhow"
version = "1.0.98"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
[[package]]
name = "async-stream"
version = "0.3.6"
@ -419,6 +425,7 @@ dependencies = [
name = "fw-anwesenheit"
version = "0.1.0"
dependencies = [
"anyhow",
"chrono",
"gpio",
"log",

1
Cargo.toml
View File

@ -22,4 +22,5 @@ rppal = { version = "0.22.1", features = ["hal"] }
smart-leds = "0.3"
ws2812-spi = "0.3"
rgb = "0.8.50"
anyhow = "1.0.98"

15
src/feedback.rs
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@ -1,7 +1,8 @@
use anyhow::Result;
use log::error;
use rgb::RGB8;
use smart_leds::colors::{GREEN, RED};
use std::{error::Error, time::Duration};
use std::time::Duration;
use tokio::{join, time::sleep};
use crate::hardware::{Buzzer, StatusLed};
@ -41,18 +42,14 @@ impl<B: Buzzer, L: StatusLed> Feedback<B, L> {
});
}
async fn blink_led_for_duration(
led: &mut L,
color: RGB8,
duration: Duration,
) -> Result<(), Box<dyn Error>> {
async fn blink_led_for_duration(led: &mut L, color: RGB8, duration: Duration) -> Result<()> {
led.turn_on(color)?;
sleep(duration).await;
led.turn_off()?;
Ok(())
}
async fn beep_ack(buzzer: &mut B) -> Result<(), Box<dyn Error>> {
async fn beep_ack(buzzer: &mut B) -> Result<()> {
buzzer
.modulated_tone(1200.0, Duration::from_millis(100))
.await?;
@ -63,7 +60,7 @@ impl<B: Buzzer, L: StatusLed> Feedback<B, L> {
Ok(())
}
async fn beep_nak(buzzer: &mut B) -> Result<(), Box<dyn Error>> {
async fn beep_nak(buzzer: &mut B) -> Result<()> {
buzzer
.modulated_tone(600.0, Duration::from_millis(150))
.await?;
@ -81,7 +78,7 @@ pub type FeedbackImpl = Feedback<MockBuzzer, MockLed>;
pub type FeedbackImpl = Feedback<GPIOBuzzer, SpiLed>;
impl FeedbackImpl {
pub fn new() -> Result<Self, Box<dyn Error>> {
pub fn new() -> Result<Self> {
#[cfg(feature = "mock_pi")]
{
Ok(Feedback {

9
src/gpio_buzzer.rs
View File

@ -1,5 +1,6 @@
use anyhow::Result;
use rppal::pwm::{Channel, Polarity, Pwm};
use std::{error::Error, time::Duration};
use std::time::Duration;
use tokio::time::sleep;
use crate::hardware::Buzzer;
@ -26,11 +27,7 @@ impl GPIOBuzzer {
}
impl Buzzer for GPIOBuzzer {
async fn modulated_tone(
&mut self,
frequency_hz: f64,
duration: Duration,
) -> Result<(), Box<dyn Error>> {
async fn modulated_tone(&mut self, frequency_hz: f64, duration: Duration) -> Result<()> {
self.pwm.set_frequency(frequency_hz, 0.5)?; // 50% duty cycle (square wave)
self.pwm.enable()?;
sleep(duration).await;

21
src/hardware.rs
View File

@ -1,6 +1,5 @@
use std::{error::Error, time::Duration};
use crate::hotspot::{HotspotError};
use anyhow::Result;
use std::time::Duration;
#[cfg(feature = "mock_pi")]
use crate::mock::MockHotspot;
@ -9,9 +8,9 @@ use crate::mock::MockHotspot;
use crate::hotspot::NMHotspot;
pub trait StatusLed {
fn turn_off(&mut self) -> Result<(), Box<dyn Error>>;
fn turn_off(&mut self) -> Result<()>;
fn turn_on(&mut self, color: rgb::RGB8) -> Result<(), Box<dyn Error>>;
fn turn_on(&mut self, color: rgb::RGB8) -> Result<()>;
}
pub trait Buzzer {
@ -19,22 +18,18 @@ pub trait Buzzer {
&mut self,
frequency_hz: f64,
duration: Duration,
) -> impl Future<Output = Result<(), Box<dyn Error>>> + std::marker::Send;
) -> impl Future<Output = Result<()>> + std::marker::Send;
}
pub trait Hotspot {
fn enable_hotspot(
&self,
) -> impl std::future::Future<Output = Result<(), HotspotError>> + std::marker::Send;
fn enable_hotspot(&self) -> impl std::future::Future<Output = Result<()>> + std::marker::Send;
fn disable_hotspot(
&self,
) -> impl std::future::Future<Output = Result<(), HotspotError>> + std::marker::Send;
fn disable_hotspot(&self) -> impl std::future::Future<Output = Result<()>> + std::marker::Send;
}
/// Create a struct to manage the hotspot
/// Respects the `mock_pi` flag.
pub fn create_hotspot() -> Result<impl Hotspot, HotspotError> {
pub fn create_hotspot() -> Result<impl Hotspot> {
#[cfg(feature = "mock_pi")]
{
Ok(MockHotspot {})

75
src/hotspot.rs
View File

@ -1,9 +1,6 @@
use log::{error, trace, warn};
use std::{
env,
fmt::{self},
process::Output,
};
use anyhow::{Result, anyhow};
use log::{trace, warn};
use std::env;
use tokio::process::Command;
use crate::hardware::Hotspot;
@ -13,36 +10,6 @@ const CON_NAME: &str = "fwa-hotspot";
const PASSWORD: &str = "a9LG2kUVrsRRVUo1";
const IPV4_ADDRES: &str = "192.168.4.1/24";
#[derive(Debug)]
pub enum HotspotError {
IoError(std::io::Error),
NonZeroExit(Output),
PasswordToShort,
}
impl fmt::Display for HotspotError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
HotspotError::IoError(err) => {
write!(f, "Failed to run hotspot command. I/O error: {err}")
}
HotspotError::NonZeroExit(output) => {
let stdout = String::from_utf8_lossy(&output.stdout);
let stderr = String::from_utf8_lossy(&output.stderr);
write!(
f,
"Failed to run hotspot command.\nStdout: {stdout}\nStderr: {stderr}",
)
}
HotspotError::PasswordToShort => {
write!(f, "The password must be at leat 8 characters long")
}
}
}
}
impl std::error::Error for HotspotError {}
/// NetworkManager Hotspot
pub struct NMHotspot {
ssid: String,
@ -52,7 +19,7 @@ pub struct NMHotspot {
}
impl NMHotspot {
pub fn new_from_env() -> Result<Self, HotspotError> {
pub fn new_from_env() -> Result<Self> {
let ssid = env::var("HOTSPOT_SSID").unwrap_or(SSID.to_owned());
let password = env::var("HOTSPOT_PW").unwrap_or_else(|_| {
warn!("HOTSPOT_PW not set. Using default password");
@ -60,8 +27,7 @@ impl NMHotspot {
});
if password.len() < 8 {
error!("Hotspot PW is to short");
return Err(HotspotError::PasswordToShort);
return Err(anyhow!("Hotspot password to short"));
}
Ok(NMHotspot {
@ -72,7 +38,7 @@ impl NMHotspot {
})
}
async fn create_hotspot(&self) -> Result<(), HotspotError> {
async fn create_hotspot(&self) -> Result<()> {
let cmd = Command::new("nmcli")
.args(["device", "wifi", "hotspot"])
.arg("con-name")
@ -82,14 +48,13 @@ impl NMHotspot {
.arg("password")
.arg(&self.password)
.output()
.await
.map_err(HotspotError::IoError)?;
.await?;
trace!("nmcli (std): {}", String::from_utf8_lossy(&cmd.stdout));
trace!("nmcli (err): {}", String::from_utf8_lossy(&cmd.stderr));
if !cmd.status.success() {
return Err(HotspotError::NonZeroExit(cmd));
return Err(anyhow!("nmcli command had non-zero exit code"));
}
let cmd = Command::new("nmcli")
@ -101,24 +66,22 @@ impl NMHotspot {
.arg("ipv4.addresses")
.arg(&self.ipv4)
.output()
.await
.map_err(HotspotError::IoError)?;
.await?;
if !cmd.status.success() {
return Err(HotspotError::NonZeroExit(cmd));
return Err(anyhow!("nmcli command had non-zero exit code"));
}
Ok(())
}
/// Checks if the connection already exists
async fn exists(&self) -> Result<bool, HotspotError> {
async fn exists(&self) -> Result<bool> {
let cmd = Command::new("nmcli")
.args(["connection", "show"])
.arg(&self.con_name)
.output()
.await
.map_err(HotspotError::IoError)?;
.await?;
trace!("nmcli (std): {}", String::from_utf8_lossy(&cmd.stdout));
trace!("nmcli (err): {}", String::from_utf8_lossy(&cmd.stderr));
@ -128,7 +91,7 @@ impl NMHotspot {
}
impl Hotspot for NMHotspot {
async fn enable_hotspot(&self) -> Result<(), HotspotError> {
async fn enable_hotspot(&self) -> Result<()> {
if !self.exists().await? {
self.create_hotspot().await?;
}
@ -137,32 +100,30 @@ impl Hotspot for NMHotspot {
.args(["connection", "up"])
.arg(&self.con_name)
.output()
.await
.map_err(HotspotError::IoError)?;
.await?;
trace!("nmcli (std): {}", String::from_utf8_lossy(&cmd.stdout));
trace!("nmcli (err): {}", String::from_utf8_lossy(&cmd.stderr));
if !cmd.status.success() {
return Err(HotspotError::NonZeroExit(cmd));
return Err(anyhow!("nmcli command had non-zero exit code"));
}
Ok(())
}
async fn disable_hotspot(&self) -> Result<(), HotspotError> {
async fn disable_hotspot(&self) -> Result<()> {
let cmd = Command::new("nmcli")
.args(["connection", "down"])
.arg(&self.con_name)
.output()
.await
.map_err(HotspotError::IoError)?;
.await?;
trace!("nmcli (std): {}", String::from_utf8_lossy(&cmd.stdout));
trace!("nmcli (err): {}", String::from_utf8_lossy(&cmd.stderr));
if !cmd.status.success() {
return Err(HotspotError::NonZeroExit(cmd));
return Err(anyhow!("nmcli command had non-zero exit code"));
}
Ok(())

19
src/id_store.rs
View File

@ -1,11 +1,8 @@
use serde::{Deserialize, Serialize};
use std::{
collections::{HashMap, HashSet},
error::Error,
};
use tokio::fs;
use crate::{id_mapping::IDMapping, tally_id::TallyID};
use anyhow::{Result, anyhow};
use serde::{Deserialize, Serialize};
use std::collections::{HashMap, HashSet};
use tokio::fs;
/// Represents a single day that IDs can attend
#[derive(Deserialize, Serialize)]
@ -30,7 +27,7 @@ impl IDStore {
}
/// Creats a new `IDStore` from a json file
pub async fn new_from_json(filepath: &str) -> Result<Self, Box<dyn Error>> {
pub async fn new_from_json(filepath: &str) -> Result<Self> {
let read_string = fs::read_to_string(filepath).await?;
Ok(serde_json::from_str(&read_string)?)
}
@ -59,14 +56,14 @@ impl IDStore {
}
/// Writes the store to a json file
pub async fn export_json(&self, filepath: &str) -> Result<(), Box<dyn Error + Send + Sync>> {
pub async fn export_json(&self, filepath: &str) -> Result<()> {
fs::write(filepath, serde_json::to_string(&self)?).await?;
Ok(())
}
/// Export the store to a csv file.
/// With days in the rows and IDs in the collum.
pub fn export_csv(&self) -> Result<String, Box<dyn Error>> {
pub fn export_csv(&self) -> Result<String> {
let mut csv = String::new();
let seperator = ";";
let mut user_ids: HashSet<TallyID> = HashSet::new();
@ -100,7 +97,7 @@ impl IDStore {
let was_there: bool = self
.days
.get(day)
.ok_or("Failed to access day")?
.ok_or(anyhow!("Failed to access day"))?
.ids
.contains(user_id);

11
src/main.rs
View File

@ -6,7 +6,7 @@ use hardware::{Hotspot, create_hotspot};
use id_store::IDStore;
use log::{error, info, warn};
use pm3::run_pm3;
use std::{env, error::Error, sync::Arc, time::Duration};
use std::{env, sync::Arc, time::Duration};
use tally_id::TallyID;
use tokio::{
fs,
@ -17,6 +17,7 @@ use tokio::{
try_join,
};
use webserver::start_webserver;
use anyhow::Result;
mod activity_fairing;
mod feedback;
@ -39,7 +40,7 @@ async fn run_webserver<H>(
store: Arc<Mutex<IDStore>>,
id_channel: Sender<String>,
hotspot: Arc<Mutex<H>>,
) -> Result<(), Box<dyn Error>>
) -> Result<()>
where
H: Hotspot + Send + Sync + 'static,
{
@ -59,7 +60,7 @@ where
Ok(())
}
async fn load_or_create_store() -> Result<IDStore, Box<dyn Error>> {
async fn load_or_create_store() -> Result<IDStore> {
if fs::try_exists(STORE_PATH).await? {
info!("Loading data from file");
IDStore::new_from_json(STORE_PATH).await
@ -89,7 +90,7 @@ async fn handle_ids_loop(
id_store: Arc<Mutex<IDStore>>,
hotspot: Arc<Mutex<impl Hotspot>>,
mut user_feedback: FeedbackImpl,
) -> Result<(), Box<dyn Error>> {
) -> Result<()> {
while let Ok(tally_id_string) = id_channel.recv().await {
let tally_id = TallyID(tally_id_string);
@ -123,7 +124,7 @@ async fn handle_ids_loop(
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
async fn main() -> Result<()> {
logger::setup_logger();
info!("Starting application");

18
src/mock.rs
View File

@ -1,6 +1,6 @@
use std::{error::Error, time::Duration};
use anyhow::Result;
use log::debug;
use std::time::Duration;
use tokio::time::sleep;
use crate::hardware::{Buzzer, Hotspot, StatusLed};
@ -8,11 +8,7 @@ use crate::hardware::{Buzzer, Hotspot, StatusLed};
pub struct MockBuzzer {}
impl Buzzer for MockBuzzer {
async fn modulated_tone(
&mut self,
frequency_hz: f64,
duration: Duration,
) -> Result<(), Box<dyn Error>> {
async fn modulated_tone(&mut self, frequency_hz: f64, duration: Duration) -> Result<()> {
debug!("MockBuzzer: modulte tone: {frequency_hz} Hz");
sleep(duration).await;
Ok(())
@ -22,12 +18,12 @@ impl Buzzer for MockBuzzer {
pub struct MockLed {}
impl StatusLed for MockLed {
fn turn_off(&mut self) -> Result<(), Box<dyn std::error::Error>> {
fn turn_off(&mut self) -> Result<()> {
debug!("Turn mock LED off");
Ok(())
}
fn turn_on(&mut self, color: rgb::RGB8) -> Result<(), Box<dyn std::error::Error>> {
fn turn_on(&mut self, color: rgb::RGB8) -> Result<()> {
debug!("Turn mock LED on to: {color}");
Ok(())
}
@ -36,12 +32,12 @@ impl StatusLed for MockLed {
pub struct MockHotspot {}
impl Hotspot for MockHotspot {
async fn enable_hotspot(&self) -> Result<(), crate::hotspot::HotspotError> {
async fn enable_hotspot(&self) -> Result<()> {
debug!("Mockhotspot: Enable hotspot");
Ok(())
}
async fn disable_hotspot(&self) -> Result<(), crate::hotspot::HotspotError> {
async fn disable_hotspot(&self) -> Result<()> {
debug!("Mockhotspot: Disable hotspot");
Ok(())
}

10
src/pm3.rs
View File

@ -1,6 +1,6 @@
use anyhow::{Result, anyhow};
use log::{debug, info, trace, warn};
use std::env;
use std::error::Error;
use std::process::Stdio;
use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
use tokio::process::Command;
@ -11,7 +11,7 @@ use tokio::sync::broadcast;
/// Runs the pm3 binary and monitors it's output
/// The pm3 binary is ether set in the env var PM3_BIN or found in the path
/// The ouput is parsed and send via the `tx` channel
pub async fn run_pm3(tx: broadcast::Sender<String>) -> Result<(), Box<dyn Error>> {
pub async fn run_pm3(tx: broadcast::Sender<String>) -> Result<()> {
kill_orphans().await;
let pm3_path = match env::var("PM3_BIN") {
@ -32,8 +32,8 @@ pub async fn run_pm3(tx: broadcast::Sender<String>) -> Result<(), Box<dyn Error>
.stdin(Stdio::piped())
.spawn()?;
let stdout = cmd.stdout.take().ok_or("Failed to get stdout")?;
let mut stdin = cmd.stdin.take().ok_or("Failed to get stdin")?;
let stdout = cmd.stdout.take().ok_or(anyhow!("Failed to get stdout"))?;
let mut stdin = cmd.stdin.take().ok_or(anyhow!("Failed to get stdin"))?;
let mut reader = BufReader::new(stdout).lines();
@ -65,7 +65,7 @@ pub async fn run_pm3(tx: broadcast::Sender<String>) -> Result<(), Box<dyn Error>
if status.success() {
Ok(())
} else {
Err("PM3 exited with a non-zero exit code".into())
Err(anyhow!("PM3 exited with a non-zero exit code"))
}
}

6
src/spi_led.rs
View File

@ -1,6 +1,6 @@
use anyhow::Result;
use rppal::spi::{Bus, Mode, SlaveSelect, Spi};
use smart_leds::SmartLedsWrite;
use std::error::Error;
use ws2812_spi::Ws2812;
use crate::hardware::StatusLed;
@ -20,13 +20,13 @@ impl SpiLed {
}
impl StatusLed for SpiLed {
fn turn_off(&mut self) -> Result<(), Box<dyn Error>> {
fn turn_off(&mut self) -> Result<()> {
self.controller
.write(vec![rgb::RGB8::new(0, 0, 0)].into_iter())?;
Ok(())
}
fn turn_on(&mut self, color: rgb::RGB8) -> Result<(), Box<dyn Error>> {
fn turn_on(&mut self, color: rgb::RGB8) -> Result<()> {
self.controller.write(vec![color].into_iter())?;
Ok(())
}