1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
use std::time::Duration;
use actix::actors::resolver::{Connect, Resolver};
use actix::prelude::*;
use actix::io::{FramedWrite, WriteHandler};
use backoff::backoff::Backoff;
use backoff::ExponentialBackoff;
use log::{error, info, trace, warn};
use tokio::io::WriteHalf;
use tokio::net::TcpStream;
use tokio_util::codec::{FramedRead, LinesCodec, LinesCodecError};
#[derive(Message, Clone)]
#[rtype(result = "()")]
pub struct OGNMessage {
pub raw: String,
}
pub struct OGNActor {
recipient: Recipient<OGNMessage>,
backoff: ExponentialBackoff,
writer: Option<FramedWrite<String, WriteHalf<TcpStream>, LinesCodec>>,
}
impl OGNActor {
pub fn new(recipient: Recipient<OGNMessage>) -> OGNActor {
let mut backoff = ExponentialBackoff::default();
backoff.max_elapsed_time = None;
OGNActor { recipient, backoff, writer: None }
}
fn schedule_keepalive(ctx: &mut Context<Self>) {
ctx.run_later(Duration::from_secs(30), |act, ctx| {
info!("Sending keepalive to OGN server");
if let Some(ref mut writer) = act.writer {
writer.write("# keep alive".to_string());
}
OGNActor::schedule_keepalive(ctx);
});
}
}
impl Actor for OGNActor {
type Context = Context<Self>;
fn started(&mut self, ctx: &mut Self::Context) {
info!("Connecting to OGN server...");
Resolver::from_registry()
.send(Connect::host("aprs.glidernet.org:10152"))
.into_actor(self)
.map(|res, act, ctx| match res {
Ok(Ok(stream)) => {
info!("Connected to OGN server");
act.backoff.reset();
let (r, w) = tokio::io::split(stream);
let mut writer = FramedWrite::new(w, LinesCodec::new(), ctx);
let login_message = {
let username = "test";
let password = "-1";
let app_name = option_env!("CARGO_PKG_NAME").unwrap_or("unknown");
let app_version = option_env!("CARGO_PKG_VERSION").unwrap_or("0.0.0");
format!(
"user {} pass {} vers {} {}",
username,
password,
app_name,
app_version,
)
};
writer.write(login_message);
act.writer = Some(writer);
ctx.add_stream(FramedRead::new(r, LinesCodec::new()));
OGNActor::schedule_keepalive(ctx);
}
Ok(Err(err)) => {
error!("Can not connect to OGN server: {}", err);
if let Some(timeout) = act.backoff.next_backoff() {
ctx.run_later(timeout, |_, ctx| ctx.stop());
} else {
ctx.stop();
}
}
Err(err) => {
error!("Can not connect to OGN server: {}", err);
if let Some(timeout) = act.backoff.next_backoff() {
ctx.run_later(timeout, |_, ctx| ctx.stop());
} else {
ctx.stop();
}
}
})
.wait(ctx);
}
fn stopped(&mut self, _: &mut Self::Context) {
info!("Disconnected from OGN server");
}
}
impl Supervised for OGNActor {
fn restarting(&mut self, _: &mut Self::Context) {
info!("Restarting OGN client...");
self.writer.take();
}
}
impl WriteHandler<LinesCodecError> for OGNActor {
fn error(&mut self, err: LinesCodecError, _: &mut Self::Context) -> Running {
warn!("OGN connection dropped: error: {}", err);
Running::Stop
}
}
impl StreamHandler<Result<String, LinesCodecError>> for OGNActor {
fn handle(&mut self, line: Result<String, LinesCodecError>, _: &mut Self::Context) {
if let Ok(line) = line {
trace!("{}", line);
if !line.starts_with('#') {
if let Err(error) = self.recipient.do_send(OGNMessage { raw: line }) {
warn!("do_send failed: {}", error);
}
}
}
}
}