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//! This module contains the functions used only by the `start_daemon` subsystem. //! //! The flow of the `start_daemon` subsystem is as follows: //! //! ```plaintext //! Options::parse() //! |> ops::start_daemon::verify() //! |> ops::AppTokens::read() //! ``` //! //! Then, repeatedly //! //! ```plaintext //! ops::Feed::read() //! |> ops::start_daemon::feeds_filter() //! |> ops::Feed::poll() //! |> ops::start_daemon::post_text() //! |> ops::start_daemon::send_messages() //! |> ops::Feed::write() //! ``` use self::super::{AppTokens, Event, Feed, verify_file}; use discord::{Discord, Error as DisErr}; use discord::model::ChannelId; use self::super::super::Error; use chrono::{Duration, Local}; use std::path::PathBuf; use std::io::Write; use std::thread; /// Verify if, given the current configuration, it's permitted to continue with the subsequent steps of the `start_daemon` /// subsystem. /// /// The return value contains either the path to the file containing the global app tokens and the path to the file containing /// the global feeds or why getting them failed. /// /// # Examples /// /// Verifying an existing tokens and feeds file. /// /// ``` /// # use dishub::ops::start_daemon; /// # use std::fs::{self, File}; /// # use std::env::temp_dir; /// # use std::io::Write; /// let tf = temp_dir().join("dishub-doctest").join("ops-start_daemon-verify-0"); /// fs::create_dir_all(&tf).unwrap(); /// File::create(tf.join("tokens.toml")).unwrap().write(&[]).unwrap(); /// File::create(tf.join("feeds.toml")).unwrap().write(&[]).unwrap(); /// /// assert_eq!(start_daemon::verify(&("$TEMP/ops-start_daemon-verify-0".to_string(), tf.clone())), /// Ok((tf.join("tokens.toml"), tf.join("feeds.toml")))); /// ``` /// /// Verifying a nonexistant tokens file. /// /// ``` /// # use dishub::ops::start_daemon; /// # use std::env::temp_dir; /// # use dishub::Error; /// let tf = temp_dir().join("dishub-doctest").join("ops-start_daemon-verify-1"); /// assert_eq!(start_daemon::verify(&("$TEMP/ops-start_daemon-verify-1".to_string(), tf)), /// Err(Error::RequiredFileFromSubsystemNonexistant { /// subsys: "init", /// fname: "$TEMP/ops-start_daemon-verify-1/tokens.toml".to_string(), /// })); /// ``` /// /// Verifying a nonexistant feeds file. /// /// ``` /// # use dishub::ops::start_daemon; /// # use std::fs::{self, File}; /// # use std::env::temp_dir; /// # use std::io::Write; /// # use dishub::Error; /// let tf = temp_dir().join("dishub-doctest").join("ops-start_daemon-verify-2"); /// fs::create_dir_all(&tf).unwrap(); /// File::create(tf.join("tokens.toml")).unwrap().write(&[]).unwrap(); /// /// let tf = temp_dir().join("dishub-doctest").join("ops-start_daemon-verify-2"); /// assert_eq!(start_daemon::verify(&("$TEMP/ops-start_daemon-verify-2".to_string(), tf)), /// Err(Error::RequiredFileFromSubsystemNonexistant { /// subsys: "add-feeds", /// fname: "$TEMP/ops-start_daemon-verify-2/feeds.toml".to_string(), /// })); /// ``` pub fn verify(config_dir: &(String, PathBuf)) -> Result<(PathBuf, PathBuf), Error> { let tokens = try!(verify_file("tokens.toml", true, config_dir, false, "init")); let feeds = try!(verify_file("feeds.toml", true, config_dir, false, "add-feeds")); Ok((tokens, feeds)) } /// A filter function to use upon feeds to be polled. /// /// # Examples /// /// ``` /// # extern crate chrono; /// # extern crate dishub; /// # use chrono::{Duration, Local}; /// # use dishub::ops::{start_daemon, Feed}; /// # fn main() { /// let mut out = Vec::new(); /// let now = Local::now(); /// let now = now.with_timezone(now.offset()); /// /// let feeds = vec![Feed::new("nabijaczleweli".to_string(), 10, 0), /// Feed { /// subject: "nabijaczleweli/dishub".to_string(), /// server: 11, /// channel: 1, /// e_tag: Some("4797f0ad2ee145181045fe69c61676e6".to_string()), /// latest: Some(now), /// next_min: Some(now + Duration::minutes(1)), /// latest_event: Some(4831774905), /// }, /// Feed { /// subject: "sehe".to_string(), /// server: 12, /// channel: 2, /// e_tag: Some("62476f13306db1cfade222d41bcdcb51".to_string()), /// latest: Some(now - Duration::minutes(2)), /// next_min: Some(now - Duration::minutes(1)), /// latest_event: Some(4856265369), /// }]; /// /// let new_feeds: Vec<_> = feeds.iter().filter(|f| start_daemon::feeds_filter(&mut out, f)).collect(); /// /// assert_eq!(&out[..], &b"Too early to re-poll nabijaczleweli/dishub\n"[..]); /// assert_eq!(&new_feeds[..], &[&feeds[0], &feeds[2]]); /// # } /// ``` pub fn feeds_filter<W: Write>(output: &mut W, f: &Feed) -> bool { let now = Local::now(); let now = now.with_timezone(now.offset()); if f.next_min.is_some() && *f.next_min.as_ref().unwrap() > now { writeln!(output, "Too early to re-poll {}", f.subject).unwrap(); false } else { true } } /// Create a Discord message body from an event. /// /// # Examples /// /// ``` /// # extern crate chrono; /// # extern crate dishub; /// # use chrono::DateTime; /// # use dishub::ops::{start_daemon, EventPayload, Event}; /// # fn main() { /// assert_eq!(&start_daemon::post_text(&Event { /// created_at: DateTime::parse_from_rfc2822("Tue, 8 Nov 2016 03:10:26 +0000").unwrap(), /// actor: "carllhw".to_string(), /// repo: "nabijaczleweli/cargo-update".to_string(), /// id: 4831774905, /// payload: EventPayload::Watch { /// action: "started".to_string(), /// }, /// }), "08.11.2016 03:10:26 AM: carllhw starred nabijaczleweli/cargo-update\n\ /// <https://github.com/nabijaczleweli/cargo-update/stargazers>"); /// # } /// ``` pub fn post_text(ev: &Event) -> String { ev.urls().into_iter().fold(ev.to_string(), |t, u| t + "\n<" + &u + ">") } /// Post the specified messages to a Discord channel. /// /// Will automatially wait on rate-limits. /// /// # Examples /// /// ```no_run /// # extern crate chrono; /// # extern crate dishub; /// # use dishub::Error; /// # use dishub::ops::{start_daemon, AppTokens}; /// # struct Feed { /// # channel: u64, /// # } /// # fn main() { /// # let tokens = AppTokens { /// # github: "".to_string(), /// # discord: "".to_string(), /// # }; /// # let feed = Feed { /// # channel: 10, /// # }; /// start_daemon::send_messages(&tokens, /// vec!["08.11.2016 03:10:26 AM: carllhw starred nabijaczleweli/cargo-update\n\ /// <https://github.com/nabijaczleweli/cargo_update/stargazers>".to_string(), /// "09.11.2016 06:14:26 PM: sehe pushed 1 commit to sehe/opus\n\ /// <https://github.com/sehe/opus/compare/95659cd...eb282d9>".to_string()], /// feed.channel).unwrap(); /// # } /// ``` pub fn send_messages(tokens: &AppTokens, txts: Vec<String>, channel: u64) -> Result<(), Error> { let discord = try!(Discord::from_bot_token(&tokens.discord).map_err(|_| Error::LoginFailed("Discord"))); for txt in txts { loop { match discord.send_message(&ChannelId(channel), &txt, "", false) { Err(DisErr::RateLimited(ms)) => thread::sleep(Duration::milliseconds(ms as i64).to_std().unwrap()), Err(_) => { return Err(Error::Io { desc: "event message", op: "post", }) } Ok(_) => break, } } } Ok(()) }