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"f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5" diff --git a/gatherer/Cargo.toml b/gatherer/Cargo.toml new file mode 100644 index 0000000..953fe01 --- /dev/null +++ b/gatherer/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "caveman-gatherer" +version = "0.0.0" +edition = "2021" + +[dependencies] +tokio = { version = "1", features = ["full"] } +serde = { version = "1", features = ["derive"] } +serde_yaml = "0.9" +chrono = "0.4" +redis = { version = "0.22", features = ["tokio-comp", "connection-manager"] } +log = "0.4" +env_logger = "0.9" +systemd = "0.10" diff --git a/gatherer/src/main.rs b/gatherer/src/main.rs new file mode 100644 index 0000000..8d3847b --- /dev/null +++ b/gatherer/src/main.rs @@ -0,0 +1,17 @@ +mod tag; +mod trends; + +#[tokio::main] +async fn main() { + let redis_client = redis::Client::open("redis://10.233.12.2:6379/") + // let redis_client = redis::Client::open("redis://localhost:6378/") + .expect("redis::Client"); + let mut redis_man = redis::aio::ConnectionManager::new(redis_client).await + .expect("redis::aio::ConnectionManager"); + + //let r = trends::TrendAnalyzer::run(&mut redis_man, 20, &[4, 25, 24 * 7], None) + let r = trends::TrendAnalyzer::run(&mut redis_man, 20, &[4], None) + .await + .unwrap(); + dbg!(r); +} diff --git a/gatherer/src/tag.rs b/gatherer/src/tag.rs new file mode 100644 index 0000000..195ba7b --- /dev/null +++ b/gatherer/src/tag.rs @@ -0,0 +1,112 @@ +use std::rc::Rc; +use redis::{ + aio::ConnectionManager, + RedisError, +}; + +const MIN_AFTER_MENTIONS: usize = 3; + +#[derive(Debug)] +pub struct Tag { + pub name: Rc, + by_hour: Vec<(u64, usize)>, + other: Vec<(String, String)>, + // by_host + // by_spelling +} + +impl Tag { + pub async fn for_each( + redis_man: &mut ConnectionManager, + language: Option, + mut f: F, + ) -> Result<(), RedisError> { + let prefix = match language { + Some(language) => format!("l:{}:", language), + None => "g:".to_string(), + }; + + let mut cursor = None; + while cursor != Some(0) { + let mut cmd = redis::cmd("SCAN"); + cmd.cursor_arg(cursor.unwrap_or(0)) + .arg("MATCH").arg(format!("{}*", prefix)) + .arg("COUNT").arg(1000); + let (next_cursor, keys) = + cmd.query_async::<_, (u64, Vec)>(redis_man) + .await?; + + let mut cmd = redis::pipe(); + for key in &keys { + cmd.hgetall(key); + } + let others = + cmd.query_async::<_, Vec>>(redis_man) + .await?; + for (key, other) in keys.iter().zip(others) { + let name = key[prefix.len()..].to_string(); + let tag = Self::from_hash(name, other); + f(tag); + } + + cursor = Some(next_cursor); + } + + Ok(()) + } + + fn from_hash(name: String, hash_values: Vec) -> Self { + let mut by_hour = Vec::with_capacity(hash_values.len() / 2); + let mut other = Vec::with_capacity(hash_values.len() / 2); + + let mut key: Option = None; + for value in hash_values.into_iter() { + if let Some(key) = key.take() { + if &key[..2] == "t:" { + if let (Ok(hour), Ok(value)) = (str::parse(&key[2..]), str::parse(&value)) { + by_hour.push((hour, value)); + } + } else if let Ok(value) = str::parse(&value) { + other.push((key, value)); + } + } else { + key = Some(value); + } + } + + #[cfg(debug)] + by_hour.sort(); + + Tag { + name: Rc::new(name), + by_hour, + other, + } + } + + pub fn score(&self, period: u64, until: u64) -> f64 { + let from = until - period; + let mut before_mentions = 0; + let mut before_hours = 0; + let mut after_mentions = 0; + + for (hour, mentions) in self.by_hour.iter().cloned() { + if hour <= from { + before_mentions += mentions; + before_hours += 1; + } else { + after_mentions += mentions; + } + } + + if after_mentions < MIN_AFTER_MENTIONS * (period as usize) { + return 0.; + } + + let before = if before_hours > 0 && before_mentions > 0 { + (before_mentions as f64) / (before_hours as f64) + } else { 0.1 }; + let after = (after_mentions as f64) / (period as f64); + after / before + } +} diff --git a/gatherer/src/trends.rs b/gatherer/src/trends.rs new file mode 100644 index 0000000..71594ff --- /dev/null +++ b/gatherer/src/trends.rs @@ -0,0 +1,94 @@ +use std::cmp::Ordering; +use std::collections::BTreeMap; +use std::rc::Rc; +use redis::{ + aio::ConnectionManager, + RedisError, +}; +use crate::tag::Tag; + +#[derive(Debug, Clone, PartialEq, PartialOrd)] +struct ScoreKey { + score: f64, + tag: Rc, +} + +impl Eq for ScoreKey { +} + +impl Ord for ScoreKey { + fn cmp(&self, other: &Self) -> Ordering { + if self.score == other.score { + self.tag.as_ref().cmp(other.tag.as_ref()) + } else if self.score < other.score { + Ordering::Less + } else { + Ordering::Greater + } + } +} + +#[derive(Debug)] +pub struct TrendAnalyzer { + /// in hours + period: u64, + /// *now* in hours + until: u64, + size: usize, + /// key contains name to avoid collision by just score + results: BTreeMap>, + score_threshold: Option, +} + +impl TrendAnalyzer { + pub async fn run( + redis_man: &mut ConnectionManager, + size: usize, + periods: &[u64], + language: Option, + ) -> Result, RedisError> { + let until = (chrono::offset::Utc::now().naive_utc().timestamp() / 3600) as u64; + let mut analyzers: Vec = periods.iter() + .cloned() + .map(|period| TrendAnalyzer { + period, + until, + size, + results: BTreeMap::new(), + score_threshold: None, + }).collect(); + + Tag::for_each(redis_man, language, |tag| { + let tag = Rc::new(tag); + for analyzer in &mut analyzers { + analyzer.process_tag(&tag); + } + }).await?; + + Ok(analyzers) + } + + pub fn process_tag(&mut self, tag: &Rc) { + let score = tag.score(self.period, self.until); + + if score <= 1.0 { + // discard downwards trends + return; + } + + if self.score_threshold.map_or(false, |score_threshold| score < score_threshold) { + // score is below self.result[..self.size].score + return; + } + + self.results.insert(ScoreKey { score, tag: tag.name.clone() }, tag.clone()); + + let mut least = self.results.keys().cloned().next().unwrap(); + if self.results.len() > self.size { + self.results.remove(&least); + least = self.results.keys().cloned().next().unwrap().clone(); + } + + self.score_threshold = Some(least.score); + } +}