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pub mod defaultconfig;
mod flight;
use datastreamcorelib::datamessage::PubSubDataMessage;
use datastreamservicelib::heartbeat::heartbeat_task;
use datastreamservicelib::utils::{configval_as_string_vec, wait_for_tasks};
use datastreamservicelib::zmqwrappers::TokioPubSubManager;
use datastreamservicelib::TerminationFlag;
use chrono::{DateTime, SecondsFormat, Utc};
use datastreamcorelib::pubsub::PubSubManager;
use failure::Fallible;
use flight::{Flight, Flights, Message};
use futures::stream::FuturesUnordered;
use futures::{future, StreamExt};
use log;
use serde_json;
use std::collections::HashMap;
use std::net::SocketAddr;
use std::str::FromStr;
use std::sync::atomic::Ordering;
use std::time::Duration;
use tokio::net::TcpStream;
use tokio::time::delay_for;
use tokio_util;
use tokio_util::codec::{FramedRead, LinesCodec};
use toml;
pub async fn mainloop(config: toml::Value, term: TerminationFlag) -> Fallible<()> {
let dump1090addr = match validate_dump1090addr(&config) {
Ok(addr) => addr,
Err(e) => {
return Err(failure::err_msg(format!(
"dump1090 address validation failed: {}",
e
)));
}
};
let track: bool = match config["process"]["track"].as_bool() {
Some(track) => track,
None => false,
};
let required_fields: Vec<String> = match config["process"]["required_fields"].as_array() {
Some(required_fields) => required_fields
.to_vec()
.iter()
.map(|x| String::from(x.as_str().unwrap()))
.collect(),
None => vec![],
};
let psmgr = TokioPubSubManager::instance();
match psmgr.lock() {
Err(_) => {
term.store(true, Ordering::Relaxed);
return Err(failure::err_msg("Could not lock psmgr"));
}
Ok(mut psmgr_locked) => {
psmgr_locked.term_flag = term.clone();
psmgr_locked
.set_default_pub_uris(&configval_as_string_vec(&config["zmq"]["pub_sockets"])?)?;
}
}
delay_for(Duration::from_millis(150)).await;
let tasks = FuturesUnordered::new();
tasks.push(tokio::spawn(heartbeat_task(term.clone())));
tasks.push(tokio::spawn(reader_publisher_task(
track,
required_fields,
dump1090addr,
"messages".to_string(),
term.clone(),
)));
wait_for_tasks(tasks).await?;
Ok(())
}
pub fn validate_dump1090addr(config: &toml::Value) -> Fallible<SocketAddr> {
let host: String = match config["dump1090"]["host"].as_str() {
Some(host) => host.to_string(),
None => {
return Err(failure::err_msg("dump1090.host not supplied"));
}
};
let port: u16 = match config["dump1090"]["port"].as_integer() {
Some(port) => {
if port < 1 || port > 65535 {
return Err(failure::err_msg(
"dump1090.port does not look like a valid TCP port number",
));
}
port as u16
}
None => 30003,
};
let dump1090addr = match format!("{}:{}", host, port).parse::<SocketAddr>() {
Ok(addr) => addr,
Err(e) => {
return Err(failure::err_msg(format!(
"Could not parse dump1090 address: {}",
e
)))
}
};
Ok(dump1090addr)
}
async fn reader_publisher_task(
track: bool,
required_fields: Vec<String>,
addr: SocketAddr,
topic: String,
term: TerminationFlag,
) -> Fallible<()> {
let psmgr = TokioPubSubManager::instance();
let mut flights = Flights::new(required_fields);
loop {
tokio::task::yield_now().await;
if term.load(Ordering::Relaxed) {
log::trace!("Got term flag, exiting reader task");
return Ok(());
}
let mut stream = match TcpStream::connect(&addr).await {
Ok(stream) => {
log::debug!("Connected: {:?}", stream);
stream
}
Err(e) => {
log::debug!("Connection failed to: {:?}: {}, retrying", addr, e);
delay_for(Duration::from_millis(1000)).await;
continue;
}
};
let (r, _w) = stream.split();
let mut stream =
FramedRead::new(r, LinesCodec::new_with_max_length(1024)).filter_map(|i| match i {
Ok(i) => future::ready(Some(i)),
Err(e) => {
log::error!("Could not read from socket: {}", e);
future::ready(None)
}
});
while let Some(line) = stream.next().await {
if term.load(Ordering::Relaxed) {
log::trace!("Got term flag, exiting reader task");
return Ok(());
}
let mut adsbmessage = Message::parse(&line);
let mut pubsubmessage = PubSubDataMessage::new(topic.clone())?;
if track && adsbmessage.valid() {
if let Some(_flight) = flights.update(&mut adsbmessage) {
pubsubmessage.data = _flight.values.json();
} else {
continue;
}
} else if !track && adsbmessage.valid() {
pubsubmessage.data = adsbmessage.json();
} else {
continue;
}
match psmgr.lock() {
Err(e) => {
log::debug!("Could not acquire psmgr lock: {:?}", e);
continue;
}
Ok(psmgr_locked) => {
psmgr_locked.publish(&pubsubmessage)?;
}
}
}
delay_for(Duration::from_millis(1000)).await;
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::defaultconfig::default_config_str;
use datastreamcorelib::logging::init_logging;
use std::env::temp_dir;
use std::sync::atomic::AtomicBool;
use std::sync::Arc;
use toml;
#[tokio::test]
async fn mainloop_heartbeat() {
init_logging(log::LevelFilter::Trace).unwrap();
let term: TerminationFlag = Arc::new(AtomicBool::new(false));
let mut config: toml::Value = toml::from_str(default_config_str().as_str()).unwrap();
let mut tmppath1 = temp_dir();
tmppath1.push("3f7639c2-df18-49fa-a788-11a0486e7ac1_pub.sock");
let sockpath1 = "ipc://".to_string() + &tmppath1.to_string_lossy();
let new_toml_sockets = toml::Value::try_from(vec![sockpath1.clone()]).unwrap();
config["zmq"]["pub_sockets"] = new_toml_sockets;
assert_eq!(
configval_as_string_vec(&config["zmq"]["pub_sockets"]).unwrap(),
vec![sockpath1.clone()]
);
let maintask = tokio::spawn(mainloop(config, term.clone()));
delay_for(Duration::from_millis(1000)).await;
term.store(true, Ordering::Relaxed);
maintask.await.expect("Main task failed").unwrap();
}
}