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+rustls = "0.18" +serde = "1.0.123" +serde_derive = "1.0.123" +tokio = { version = "0.2", features = ["full"] } +toml = "0.5.8" + +redis = { version = "0.17.0", features = ["tls", "async-std-tls-comp", "tokio-tls-comp", "connection-manager"] } + +# Twitter +egg-mode = "0.15.0" + +[build-dependencies] +anyhow = "1.0.38" +prost-build = "0.7.0" diff --git a/src/clients/mod.rs b/src/clients/mod.rs new file mode 100644 index 0000000000..66a9cdfc22 --- /dev/null +++ b/src/clients/mod.rs @@ -0,0 +1 @@ +pub mod redis_client; \ No newline at end of file diff --git a/src/clients/redis_client.rs b/src/clients/redis_client.rs new file mode 100644 index 0000000000..28164ecda3 --- /dev/null +++ b/src/clients/redis_client.rs @@ -0,0 +1,65 @@ +use anyhow::anyhow; +use crate::AnyhowResult; +use crate::secrets::RedisSecrets; +use log::{debug, info}; +use redis::AsyncCommands; +use redis::aio::{Connection, ConnectionManager}; +use redis; +use std::thread; +use std::time::Duration; + +pub struct RedisClient { + secrets: RedisSecrets, + + /// This manages our connection. + /// It's meant to be absent when not connected. + connection_manager: Option, + + /// Attempts to retry a Redis command. + max_retry_count: u32, +} + +impl RedisClient { + pub fn new(secrets: &RedisSecrets, retry_count: u32) -> Self { + Self { + secrets: secrets.clone(), + connection_manager: None, + max_retry_count: retry_count, + } + } + + pub async fn connect(&mut self) -> AnyhowResult<()> { + let client = redis::Client::open(self.secrets.connection_url())?; + + let connection_manager = client.get_tokio_connection_manager().await?; + self.connection_manager = Some(connection_manager); + + Ok(()) + } + + pub async fn publish_bytes(&mut self, channel: &str, message: &[u8]) -> AnyhowResult { + for i in 0 .. self.max_retry_count { + match self.try_publish_bytes(channel, message).await { + Ok(r) => return Ok(r), + Err(_) => { + debug!("Redis publish_bytes failed; retrying (attempt {})", i); + continue; + }, + } + } + Err(anyhow!("Retry count elapsed.")) + } + + async fn try_publish_bytes(&mut self, channel: &str, message: &[u8]) -> AnyhowResult { + let connection_manager = match &mut self.connection_manager { + None => { + self.connect().await?; + return Err(anyhow!("Not connected")); + }, + Some(cm) => cm, + }; + + let result = connection_manager.publish(channel, message).await?; + Ok(result) + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000000..ad107a4703 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,76 @@ +#![allow(dead_code)] +#![allow(unused_mut)] +#![allow(unused_imports)] +#![warn(unused_must_use)] +//#![allow(warnings)] + +#[macro_use] +extern crate serde_derive; + +mod clients; +mod secrets; +//mod util; + +//use futures::TryStreamExt; +use egg_mode::stream::StreamMessage; +use crate::secrets::Secrets; +use crate::clients::redis_client::RedisClient; + +pub type AnyhowResult = anyhow::Result; + +const ENV_PUBLISH_TOPIC : &'static str = "PUBLISH_TOPIC"; +const ENV_PUBLISH_TOPIC_DEFAULT : &'static str = "firehose"; + +const ENV_REDIS_MAX_RETRY_COUNT : &'static str = "REDIS_MAX_RETRY_COUNT"; +const ENV_REDIS_MAX_RETRY_COUNT_DEFAULT : u32 = 3; + +#[tokio::main] +async fn main() -> anyhow::Result<()> { + + easyenv::init_env_logger(None); + + let redis_publish_topic = easyenv::get_env_string_or_default( + ENV_PUBLISH_TOPIC, ENV_PUBLISH_TOPIC_DEFAULT); + + let redis_max_retry_count = easyenv::get_env_num( + ENV_REDIS_MAX_RETRY_COUNT, + ENV_REDIS_MAX_RETRY_COUNT_DEFAULT)?; + + let secrets = Secrets::from_file("secrets.toml")?; + + let mut redis_client = RedisClient::new( + &secrets.redis, + redis_max_retry_count + ); + + redis_client.connect().await?; + + // We can capture: Mentions, Retweets, Replies. + // We cannot capture: Follows. + + /*let config = common::Config::load().await; + println!("Streaming tweets containing popular programming languages (and also Rust)"); + println!("Ctrl-C to quit\n"); + + let stream = egg_mode::stream::filter() + .follow(&[1297106371238932481]) // vocodes + //.track(&["rustlang", "python", "java", "javascript"]) + .language(&["en"]) + .start(&config.token) + .try_for_each(|m| { + if let StreamMessage::Tweet(tweet) = m { + common::print_tweet(&tweet); + println!("──────────────────────────────────────"); + } else { + println!("{:?}", m); + } + futures::future::ok(()) + }); + if let Err(e) = stream.await { + println!("Stream error: {}", e); + println!("Disconnected") + } +*/ + + Ok(()) +} \ No newline at end of file diff --git a/src/secrets.rs b/src/secrets.rs new file mode 100644 index 0000000000..1270514896 --- /dev/null +++ b/src/secrets.rs @@ -0,0 +1,49 @@ +use crate::AnyhowResult; +use std::io::Read; + +#[derive(Deserialize)] +pub struct Secrets { + pub redis: RedisSecrets, + pub twitter: TwitterSecrets, +} + +#[derive(Deserialize, Clone)] +pub struct RedisSecrets { + pub username: String, + pub password: String, + pub host: String, + pub port: u32, +} + +#[derive(Deserialize, Clone)] +pub struct TwitterSecrets { + pub api_key: String, + pub api_secret_key: String, +} + +impl Secrets { + pub fn from_file(filename: &str) -> AnyhowResult { + let mut file = std::fs::File::open(filename)?; + let mut buffer = String::new(); + file.read_to_string(&mut buffer)?; + let secrets = toml::from_str(&buffer)?; + Ok(secrets) + } +} + +impl RedisSecrets { + pub fn connection_url(&self) -> String { + format!("rediss://{}:{}@{}:{}", self.username, self.password, self.host, self.port) + } +} + +/*impl TwitterSecrets { + pub fn get_user_config(&self) -> AnyhowResult { + let config = UserConfig::builder() + .name(self.username.to_string()) + .token(self.oauth_access_token.to_string()) + .enable_all_capabilities() + .build()?; + Ok(config) + } +}*/ diff --git a/src/util.rs b/src/util.rs new file mode 100644 index 0000000000..586312e56c --- /dev/null +++ b/src/util.rs @@ -0,0 +1,184 @@ + +pub struct Config { + pub token: egg_mode::Token, + pub user_id: u64, + pub screen_name: String, +} + +impl Config { + pub async fn load() -> Self { + let a1 = Config::load_inner().await; + if let Some(conf) = a1 { + return conf; + } + + Config::load_inner().await.unwrap() + } + + /// This needs to be a separate function so we can retry after creating the + /// twitter_settings file. Idealy we would recurse, but that requires boxing + /// the output which doesn't seem worthwhile + async fn load_inner() -> Option { + //IMPORTANT: make an app for yourself at apps.twitter.com and get your + //key/secret into these files; these examples won't work without them + let consumer_key = include_str!("consumer_key").trim(); + let consumer_secret = include_str!("consumer_secret").trim(); + + let con_token = egg_mode::KeyPair::new(consumer_key, consumer_secret); + + let mut config = String::new(); + let user_id: u64; + let username: String; + let token: egg_mode::Token; + + //look at all this unwrapping! who told you it was my birthday? + if let Ok(mut f) = std::fs::File::open("twitter_settings") { + f.read_to_string(&mut config).unwrap(); + + let mut iter = config.split('\n'); + + username = iter.next().unwrap().to_string(); + user_id = u64::from_str_radix(&iter.next().unwrap(), 10).unwrap(); + let access_token = egg_mode::KeyPair::new( + iter.next().unwrap().to_string(), + iter.next().unwrap().to_string(), + ); + token = egg_mode::Token::Access { + consumer: con_token, + access: access_token, + }; + + if let Err(err) = egg_mode::auth::verify_tokens(&token).await { + println!("We've hit an error using your old tokens: {:?}", err); + println!("We'll have to reauthenticate before continuing."); + std::fs::remove_file("twitter_settings").unwrap(); + } else { + println!("Welcome back, {}!\n", username); + } + } else { + let request_token = egg_mode::auth::request_token(&con_token, "oob").await.unwrap(); + + println!("Go to the following URL, sign in, and give me the PIN that comes back:"); + println!("{}", egg_mode::auth::authorize_url(&request_token)); + + let mut pin = String::new(); + std::io::stdin().read_line(&mut pin).unwrap(); + println!(""); + + let tok_result = egg_mode::auth::access_token(con_token, &request_token, pin) + .await + .unwrap(); + + token = tok_result.0; + user_id = tok_result.1; + username = tok_result.2; + + match token { + egg_mode::Token::Access { + access: ref access_token, + .. + } => { + config.push_str(&username); + config.push('\n'); + config.push_str(&format!("{}", user_id)); + config.push('\n'); + config.push_str(&access_token.key); + config.push('\n'); + config.push_str(&access_token.secret); + } + _ => unreachable!(), + } + + let mut f = std::fs::File::create("twitter_settings").unwrap(); + f.write_all(config.as_bytes()).unwrap(); + + println!("Welcome, {}, let's get this show on the road!", username); + } + + //TODO: Is there a better way to query whether a file exists? + if std::fs::metadata("twitter_settings").is_ok() { + Some(Config { + token: token, + user_id: user_id, + screen_name: username, + }) + } else { + None + } + } +} + + +pub fn print_tweet(tweet: &egg_mode::tweet::Tweet) { + if let Some(ref user) = tweet.user { + println!( + "{} (@{}) posted at {}", + Paint::blue(&user.name), + Paint::bold(Paint::blue(&user.screen_name)), + tweet.created_at.with_timezone(&chrono::Local) + ); + } + + if let Some(ref screen_name) = tweet.in_reply_to_screen_name { + println!("➜ in reply to @{}", Paint::blue(screen_name)); + } + + if let Some(ref status) = tweet.retweeted_status { + println!("{}", Paint::red("Retweet ➜")); + print_tweet(status); + return; + } else { + println!("{}", Paint::green(&tweet.text)); + } + + if let Some(source) = &tweet.source { + println!("➜ via {} ({})", source.name, source.url); + } + + if let Some(ref place) = tweet.place { + println!("➜ from: {}", place.full_name); + } + + if let Some(ref status) = tweet.quoted_status { + println!("{}", Paint::red("➜ Quoting the following status:")); + print_tweet(status); + } + + if !tweet.entities.hashtags.is_empty() { + println!("➜ Hashtags contained in the tweet:"); + for tag in &tweet.entities.hashtags { + println!(" {}", tag.text); + } + } + + if !tweet.entities.symbols.is_empty() { + println!("➜ Symbols contained in the tweet:"); + for tag in &tweet.entities.symbols { + println!(" {}", tag.text); + } + } + + if !tweet.entities.urls.is_empty() { + println!("➜ URLs contained in the tweet:"); + for url in &tweet.entities.urls { + if let Some(expanded_url) = &url.expanded_url { + println!(" {}", expanded_url); + } + } + } + + if !tweet.entities.user_mentions.is_empty() { + println!("➜ Users mentioned in the tweet:"); + for user in &tweet.entities.user_mentions { + println!(" {}", Paint::bold(Paint::blue(&user.screen_name))); + } + } + + if let Some(ref media) = tweet.extended_entities { + println!("➜ Media attached to the tweet:"); + for info in &media.media { + println!(" A {:?}", info.media_type); + } + } +} +