Mercurial > templog
annotate rust/src/main.rs @ 607:282fae1c12e4 rust
NotTooOften
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 17 Feb 2017 22:27:44 +0800 |
| parents | 278f1002b5c7 |
| children | 7bda01659426 |
| rev | line source |
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1 extern crate tokio_core; |
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2 extern crate futures; |
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3 #[macro_use] |
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4 extern crate log; |
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5 extern crate env_logger; |
| 597 | 6 extern crate rustc_serialize; |
| 7 extern crate time; | |
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8 |
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9 #[macro_use] |
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10 extern crate lazy_static; |
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11 |
| 595 | 12 #[macro_use] |
| 13 extern crate serde_derive; | |
| 14 extern crate serde; | |
| 15 | |
| 16 extern crate toml; | |
| 17 | |
| 597 | 18 extern crate docopt; |
| 19 | |
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20 use std::io; |
| 607 | 21 use std::time::{Duration,Instant}; |
| 22 use std::ops::Not; | |
| 23 use std::cell::Cell; | |
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24 |
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25 use tokio_core::reactor::Core; |
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26 use futures::{Stream,Sink,Future}; |
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27 use futures::sync::{mpsc}; |
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28 use sensor::Sensor; |
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29 |
| 595 | 30 mod config; |
| 590 | 31 mod sensor; |
| 597 | 32 pub mod fridge; |
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33 mod types; |
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34 mod paramwaiter; |
| 591 | 35 |
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36 use types::*; |
| 597 | 37 use config::Config; |
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38 |
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39 fn run(config: &Config, nowait: bool, testmode: bool) { |
| 595 | 40 |
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41 let mut core = Core::new().unwrap(); |
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42 let handle = core.handle(); |
| 587 | 43 |
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44 let mut paramh = ParamHolder::new(); |
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45 let mut fridge = fridge::Fridge::new(&config, nowait, paramh.p, &handle); |
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46 |
| 597 | 47 let (fridge_reading_s, fridge_reading_r) = mpsc::channel(1); |
| 48 let fridge_reading_r = fridge_reading_r.map_err(|_| io::Error::new(io::ErrorKind::Other, "Problem with fridge_reading_r channel")); | |
| 587 | 49 |
| 597 | 50 let sensor_stream = if testmode { |
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51 sensor::TestSensor::new(config).stream(&handle) |
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52 } else { |
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53 sensor::OneWireSensor::new(config).stream(&handle) |
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54 }; |
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55 |
| 597 | 56 // Send the sensors of interest to the fridge (fridge_reading_s), |
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57 // while streaming them all to the web sender. |
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58 let s = sensor_stream.map(|r| { |
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59 debug!("sensors {:?}", r); |
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60 let msg = fridge::Message::Sensor { |
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61 wort: r.get_temp(&config.WORT_NAME), |
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62 fridge: r.get_temp(&config.FRIDGE_NAME) |
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63 }; |
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64 let t = fridge_reading_s.clone().send(msg) |
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65 .map(|_| ()) |
| 595 | 66 .map_err(|e| { |
| 597 | 67 warn!("Send error in fridge_reading_s: {}", e.to_string()); |
| 595 | 68 () |
| 69 }); | |
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70 handle.spawn(t); |
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71 r |
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72 }); |
| 587 | 73 |
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74 let param_stream = paramwaiter::ParamWaiter::stream(&handle); |
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75 let p = param_stream.map(|p| { |
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76 fridge::Message::Params(p) |
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77 }); |
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78 |
| 597 | 79 let timeouts = fridge.wakeups(); |
| 591 | 80 |
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81 let all_readings = s.for_each(|_| Ok(())); |
| 597 | 82 let all_fridge = p.select(timeouts).select(fridge_reading_r).forward(fridge) |
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83 .map(|_| () ); |
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84 |
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85 let all = all_fridge.select(all_readings); |
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86 |
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87 core.run(all).ok(); |
| 587 | 88 } |
| 89 | |
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90 const USAGE: &'static str = "\ |
| 597 | 91 Wort Temperature |
| 92 Matt Johnston 2017 [email protected] | |
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93 Usage: wort-templog [--help] [--new] [--daemon] [--debug] [--test] [--defconf] [--thisconf] [--nowait] |
| 597 | 94 |
| 95 Options: | |
| 96 -h, --help | |
| 97 --new Replace existing running instance | |
| 98 -D, --daemon Run in background | |
| 99 -d, --debug | |
| 100 -t, --test Use fake sensors etc | |
| 101 --nowait Skip initial fridge wait | |
| 102 --defconf Print default config (customise in tempserver.conf) | |
| 103 --thisconf Print used config | |
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104 "; |
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105 |
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106 #[derive(RustcDecodable)] |
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107 struct Args { |
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108 flag_new: bool, |
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109 flag_daemon: bool, |
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110 flag_debug: bool, |
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111 flag_test: bool, |
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112 flag_defconf: bool, |
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113 flag_thisconf: bool, |
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114 flag_nowait: bool, |
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115 } |
| 597 | 116 |
| 117 fn setup_log(debug: bool) { | |
| 118 let loglevel = if debug { | |
| 119 log::LogLevelFilter::Debug | |
| 120 } else { | |
| 121 log::LogLevelFilter::Info | |
| 122 }; | |
| 123 | |
| 124 let format = |record: &log::LogRecord| { | |
| 125 let datefmt = "%Y-%m-%d %I:%M:%S %p"; | |
| 126 let ts = time::strftime(datefmt, &time::now()).unwrap(); | |
| 127 format!("{}: {} - {}", ts, record.level(), record.args()) | |
| 128 }; | |
| 129 | |
| 130 | |
| 131 let mut builder = env_logger::LogBuilder::new(); | |
| 132 builder.format(format).filter(Some("wort_templog"), loglevel); | |
| 133 builder.init().unwrap(); | |
| 134 } | |
| 135 | |
| 136 fn handle_args() -> Args { | |
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137 let args: Args = docopt::Docopt::new(USAGE).and_then(|d| d.decode()).unwrap_or_else(|e| e.exit()); |
| 597 | 138 |
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139 if args.flag_defconf { |
| 597 | 140 println!("Default configuration:\n{}\n\n{}", |
| 141 "(custom options go in tempserver.conf)", | |
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142 config::Config::default().to_toml_string()); |
| 597 | 143 std::process::exit(0); |
| 144 } | |
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145 args |
| 597 | 146 } |
| 147 | |
| 601 | 148 fn load_config() -> Config { |
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149 let nconfig = config::Config::default(); |
| 601 | 150 |
| 151 let conf_filename = "tempserver.conf"; | |
| 152 nconfig.merge_file(conf_filename) | |
| 153 .unwrap_or_else(|e| { | |
| 154 println!("Couldn't parse {}: {}", conf_filename, e); | |
| 155 std::process::exit(1); | |
| 156 }) | |
| 157 } | |
| 158 | |
| 597 | 159 fn main() { |
| 160 | |
| 161 let args = handle_args(); | |
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162 setup_log(args.flag_debug); |
| 597 | 163 //env_logger::init().unwrap(); |
| 164 | |
| 165 info!("wort-templog"); | |
| 166 debug!("debug mode"); | |
| 167 | |
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168 let config = load_config(); |
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169 |
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170 if args.flag_thisconf { |
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171 println!("Current configuration:\n\n{}", |
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172 config.to_toml_string()); |
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173 std::process::exit(0); |
| 597 | 174 } |
| 175 | |
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176 run(&config, args.flag_nowait, args.flag_test); |
| 597 | 177 } |
| 178 | |
| 607 | 179 /// Call closures with a rate limit. Useful for log message ratelimiting |
| 180 pub struct NotTooOften { | |
| 181 last: Cell<Instant>, | |
| 182 limit: Duration, | |
| 183 } | |
| 184 | |
| 185 impl NotTooOften { | |
| 186 pub fn new(limit_secs: u64) -> Self { | |
| 187 NotTooOften { | |
| 188 limit: Duration::new(limit_secs, 0), | |
| 189 last: Cell::new(Instant::now() - Duration::new(limit_secs+1, 0)), | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 pub fn and_then<F>(&self, op: F) | |
| 194 where F: Fn() { | |
| 195 let now = Instant::now(); | |
| 196 if now - self.last.get() > self.limit { | |
| 197 self.last.set(now); | |
| 198 op(); | |
| 199 } | |
| 200 } | |
| 201 } | |
| 202 |