godwit_daemon/dispatcher/
mod.rs

1use crate::config::*;
2use crate::core::Ops;
3use crate::errors::NetworkError;
4use crate::prochandler::HandleOps;
5use crate::runner::Regress;
6use log::debug;
7use serde::{Deserialize, Serialize};
8use std::default::Default;
9use zmq::{self, Context, Message};
10
11#[derive(Serialize, Deserialize, Default)]
12pub struct DispatchMsg {
13	pub proctype: HandleOps,
14	pub func: Option<Ops>,
15	pub application: Option<String>,
16	pub refresh: bool,
17	pub regress_counter: Option<Regress>,
18}
19
20#[derive(Debug, Serialize, Deserialize)]
21pub struct ResponseMsg {
22	pub code: String,
23	pub message: String,
24}
25
26impl Default for ResponseMsg {
27	fn default() -> ResponseMsg {
28		ResponseMsg {
29			code: String::from("E000"),
30			message: String::from(
31				"A generic, unspecified error occured. See backtrace for more details.",
32			),
33		}
34	}
35}
36
37pub fn send(d_msg: DispatchMsg) -> Result<ResponseMsg, NetworkError> {
38	let context = Context::new();
39	let requester = context.socket(zmq::REQ)?;
40
41	requester.connect(get_config()?.client_url.as_str())?;
42
43	let mut msg = Message::new();
44
45	debug!("Sending Request...");
46	requester.send(&serde_json::to_string(&d_msg)?, 0)?;
47
48	requester.recv(&mut msg, 0)?;
49
50	let retmsg: ResponseMsg = serde_json::from_str(msg.as_str().unwrap_or_default())?;
51
52	debug!("Received response: {:?}", retmsg);
53
54	Ok(retmsg)
55}
56
57pub fn heartbeat() -> Result<ResponseMsg, NetworkError> {
58	// TODO: Define an early exit if daemon isn't running yet.
59	let context = Context::new();
60	let requester = context.socket(zmq::REQ)?;
61
62	requester.connect(get_config()?.client_url.as_str())?;
63
64	// QUESTION: These params are a hack. Is there a better way to detect this?
65	requester.set_linger(1)?;
66	requester.set_rcvtimeo(2000)?;
67
68	let mut msg = Message::new();
69
70	debug!("Sending Heartbeat...");
71
72	let snd_msg = DispatchMsg {
73		proctype: HandleOps::Heartbeat,
74		..Default::default()
75	};
76
77	requester.send(&serde_json::to_string(&snd_msg)?, 0)?;
78
79	requester.recv(&mut msg, 0)?;
80
81	let retmsg: ResponseMsg = serde_json::from_str(msg.as_str().unwrap_or_default())?;
82
83	// TODO: Check against expected heartbeat output.
84
85	debug!("Received response: {:?}", retmsg);
86
87	Ok(retmsg)
88}
godwit_daemon/dispatcher/mod.rs

godwit_daemon/dispatcher/
mod.rs
