commit d22c50dc2988f40161cc6770297d25317ffe2681 Author: husky Date: Fri Mar 7 17:41:05 2025 -0800 public release of asklyphe search service diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..3a8cabc --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +/target +.idea diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..edc3ef2 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,23 @@ +[package] +name = "searchservice" +version = "0.1.0" +edition = "2021" +license = "AGPL-3" +license-file = "LICENSE" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +asklyphe-common = { git = "https://forge.voremicrocomputers.com/asklyphe-public/asklyphe-common.git", branch = "main" } +tokio = { version = "1.0", features = ["full"] } +serde = { version = "1.0", features = ["derive"] } +rmp-serde = "1.1.2" +async-nats = "0.38.0" +chrono = "0.4.26" +once_cell = "1.18.0" +ulid = "1.0.0" +rand = "0.8.5" +async-recursion = "1.0.5" +futures = "0.3.30" +log = "0.4.20" +env_logger = "0.10.2" \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..5b06359 --- /dev/null +++ b/LICENSE @@ -0,0 +1,181 @@ +GNU AFFERO GENERAL PUBLIC LICENSE +Version 3, 19 November 2007 + +Copyright (C) 2007 Free Software Foundation, Inc. + +Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. + +Preamble + +The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software. + +The licenses for most software and other practical works are designed to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. + diff --git a/src/algorithm.rs b/src/algorithm.rs new file mode 100644 index 0000000..54c0b6a --- /dev/null +++ b/src/algorithm.rs @@ -0,0 +1,1213 @@ +/* + * searchservice algorithm.rs + * - how search works + * + * Copyright (C) 2025 Real Microsoft, LLC + * + * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License along with this program. If not, see . +*/ + +use std::collections::{BTreeMap, BTreeSet, VecDeque}; +use std::ops::Mul; +use async_recursion::async_recursion; +use once_cell::sync::Lazy; +use std::sync::{Arc, Mutex}; +use std::sync::atomic::{AtomicUsize, Ordering}; +use log::{debug, info}; +use rand::Rng; +use asklyphe_common::db; +use asklyphe_common::db::{STRHASH}; +use asklyphe_common::foundationdb::Database; +use asklyphe_common::nats::searchservice; + +pub struct SearchResult { + pub url: String, + pub title: Option, + pub description: Option, + pub url_contains_result: Option, + pub word_occurs: f64, + pub authorword_occurs: f64, + pub descriptionword_occurs: f64, + pub keyword_occurs: f64, + pub sitename_occurs: f64, + pub linkword_occurs: f64, + pub pagerank: f64, + pub relavence: f64, + pub words_contained: BTreeSet, + pub total_query_words: f64, + pub words: BTreeMap, + pub closest_match: f64, + pub phrase_match_count: f64, + pub match_acc: f64, + pub match_c: f64, + pub highest_match: f64, +} + +impl SearchResult { + pub fn relavence(&self, no_separator_flag: bool) -> f64 { + if !no_separator_flag { + ((self.word_occurs * 1.3) + (self.descriptionword_occurs * 1.2) + (self.keyword_occurs * 0.5) + (self.authorword_occurs * 1.2) + (self.sitename_occurs * 1.3) + (self.linkword_occurs * 2.9) + (self.pagerank.powi(4)).max(0.001)) + .max(0.01) + * + if self.total_query_words > 1.0 { + ((1.0001 - if self.match_c > 0.0 { (self.match_acc / self.match_c) / self.highest_match.max(0.01) } else { 0.1 }) + + if !self.words_contained.is_empty() { (self.total_query_words / self.words_contained.len() as f64).max(0.002) } else { 1.0 }).max(0.001) + * self.phrase_match_count.max(0.02).powi(5) + } else { + 1.0 + } + } else { + if self.total_query_words > 1.0 { + (1.0001 - if self.match_c > 0.0 { (self.match_acc / self.match_c) / self.highest_match.max(0.01) } else { 0.1 }) + * self.phrase_match_count.max(0.02).powi(8) + } else { + 1.0 + } + } + } +} + +pub static PRECALCED_PAGERANKS: Lazy>> = Lazy::new(|| Mutex::new(BTreeMap::new())); +pub static CACHED_PAGERANKS: Lazy>> = Lazy::new(|| Mutex::new(BTreeMap::new())); +pub static VISITED_PAGERANKS: Lazy>> = Lazy::new(|| Mutex::new(BTreeSet::new())); +pub static VISITED_PAGERANKS2: Lazy>> = Lazy::new(|| Mutex::new(BTreeSet::new())); +pub static HASH_CACHE: Lazy> = Lazy::new(|| HashCache::new(Arc::new(Mutex::new(BTreeMap::new())))); +pub static UNHASH_CACHE: Lazy> = Lazy::new(|| HashCache::new(Arc::new(Mutex::new(BTreeMap::new())))); +pub static TITLE_CACHE: Lazy>> = Lazy::new(|| HashCache::new(Arc::new(Mutex::new(BTreeMap::new())))); +pub static DESC_CACHE: Lazy>> = Lazy::new(|| HashCache::new(Arc::new(Mutex::new(BTreeMap::new())))); + +pub struct HashCache { + inner: Arc>>, +} + +pub enum EntryBuilder { + Found(V), + NeedsInsert((K, Arc>>)), +} + +impl EntryBuilder { + pub async fn or_insert(self, value: impl futures::Future) -> V { + match self { + EntryBuilder::Found(v) => { v } + EntryBuilder::NeedsInsert((key, inner)) => { + let value = (value).await; + inner.lock().unwrap().insert(key, value.clone()); + value + } + } + } +} + +impl HashCache { + pub fn new(inner: Arc>>) -> Self { + Self { + inner, + } + } + + pub fn entry(&self, key: K) -> EntryBuilder { + if let Some(value) = self.inner.lock().unwrap().get(&key).cloned() { + EntryBuilder::Found(value) + } else { + EntryBuilder::NeedsInsert((key, self.inner.clone())) + } + } + + pub fn unconditional(&self, key: K) -> EntryBuilder { + EntryBuilder::NeedsInsert((key, self.inner.clone())) + } +} + +pub async fn cached_hash(db: &Database, key: String) -> STRHASH { + HASH_CACHE.entry(key.clone()).or_insert(db::foa_strhash(db, &key)).await +} + +pub async fn cached_unhash(db: &Database, key: STRHASH) -> String { + UNHASH_CACHE.entry(key).or_insert(db::unhash(db, key)).await +} + +pub async fn cached_title(db: &Database, key: STRHASH) -> Option { + if let Some(title) = TITLE_CACHE.entry(key).or_insert(db::info_title(db, key)).await { + Some(title) + } else { + TITLE_CACHE.unconditional(key).or_insert(db::info_title(db, key)).await + } +} + +pub async fn cached_desc(db: &Database, key: STRHASH) -> Option { + if let Some(desc) = DESC_CACHE.entry(key).or_insert(db::info_description(db, key)).await { + Some(desc) + } else { + DESC_CACHE.unconditional(key).or_insert(db::info_description(db, key)).await + } +} + +#[async_recursion] +pub async fn pagerank(db: &Database, url: STRHASH) -> f64 { + if let Some(precalc) = PRECALCED_PAGERANKS.lock().unwrap().get(&url) { + return *precalc; + } + if let Some(precalc_db) = db::page_pagerank(db, url).await { + //debug!("url {} in db {}", url, precalc_db); + if precalc_db == 0.0 { + //debug!("but 0 ):"); + } else { + CACHED_PAGERANKS.lock().unwrap().insert(url, precalc_db); + return precalc_db; + } + } + let mut accum = 0.0; + let incoming = { + db::page_links_entering(db, url).await + }; + let d = { + db::page_damping(db, url).await.unwrap_or(0.85) + }; + let d = (1.0 - d).max(0.0); + for url in incoming { + if PRECALCED_PAGERANKS.lock().unwrap().get(&url).is_none() && VISITED_PAGERANKS2.lock().unwrap().contains(&url) { + continue; + } + let c = { + db::page_links_exiting_count(db, url).await + }; + if c == 0 { continue; } + if let Some(precalc) = PRECALCED_PAGERANKS.lock().unwrap().get(&url) { + if *precalc != 0.0 { + accum += *precalc / c as f64; + continue; + } + } + VISITED_PAGERANKS2.lock().unwrap().insert(url); + let pr = pagerank(db, url).await; + accum += pr / c as f64; + } + + let pr = (1.0 - d) + (d * accum); + db::document_set_pagerank(db, url, pr, chrono::Utc::now().timestamp()).await; + PRECALCED_PAGERANKS.lock().unwrap().insert(url, pr); + CACHED_PAGERANKS.lock().unwrap().insert(url, pr); + pr +} + +pub const MAX_PAGERANK_APPROX_DEPTH: u64 = 1; + +#[async_recursion] +pub async fn pagerank_approx(db: &Database, url: STRHASH, depth: u64) -> f64 { + if depth > MAX_PAGERANK_APPROX_DEPTH { + return 0.8; + } + if let Some(precalc) = PRECALCED_PAGERANKS.lock().unwrap().get(&url) { + return *precalc; + } else if let Some(precalc) = CACHED_PAGERANKS.lock().unwrap().get(&url) { + return *precalc; + } + + let mut not_in_db = false; + let mut in_db_but_zero = false; + + if let Some(precalc_db) = db::page_pagerank(db, url).await { + //debug!("url {} in db {}", url, precalc_db); + if precalc_db == 0.0 { + //debug!("but 0 ):"); + + // uncomment when we want to eventually try to recalc 0.0 prs + //not_in_db = true; + //in_db_but_zero = true; + if depth == 0 { + tokio::spawn(async move { + info!("task spawned to calc real pagerank..."); + let db = Database::default().expect("couldn't connect to foundation db!"); + let pr = pagerank(&db, url).await; + info!("finished calculating {} real pagerank: {}", url, pr); + }); + } + }// else { + CACHED_PAGERANKS.lock().unwrap().insert(url, precalc_db); + return precalc_db; + //} + } else { + not_in_db = true; + } + + // spawn task to eventually calculate real pagerank + if depth == 0 && not_in_db { + tokio::spawn(async move { + //info!("task spawned to calc real pagerank..."); + let db = Database::default().expect("couldn't connect to foundation db!"); + pagerank(&db, url).await; + //info!("finished calculating {} real pagerank: {}", url, pr); + }); + } + + if in_db_but_zero { + CACHED_PAGERANKS.lock().unwrap().insert(url, 0.0); + return 0.0; + } + + let mut accum = 0.0; + let incoming = { + db::page_links_entering(db, url).await + }; + let d = { + db::page_damping(db, url).await.unwrap_or(0.85) + }; + let d = (1.0 - d).max(0.0); + for url in incoming { + if PRECALCED_PAGERANKS.lock().unwrap().get(&url).is_none() && CACHED_PAGERANKS.lock().unwrap().get(&url).is_none() && VISITED_PAGERANKS.lock().unwrap().contains(&url) { + continue; + } + let c = { + db::page_links_exiting_count(db, url).await + }; + if c == 0 { continue; } + if let Some(precalc) = PRECALCED_PAGERANKS.lock().unwrap().get(&url) { + accum += *precalc / c as f64; + continue; + } + if let Some(precalc) = CACHED_PAGERANKS.lock().unwrap().get(&url) { + accum += *precalc / c as f64; + continue; + } + VISITED_PAGERANKS.lock().unwrap().insert(url); + let pr = pagerank_approx(db, url, depth + 1).await; + CACHED_PAGERANKS.lock().unwrap().insert(url, pr); + accum += pr / c as f64; + } + + let pr = (1.0 - d) + (d * accum); + CACHED_PAGERANKS.lock().unwrap().insert(url, pr); + pr +} + +fn multiword_penalty(dist_a: f64, dist_b: f64) -> f64 { + if (dist_b - dist_a).is_sign_negative() { + // second comes before first, not good! + (dist_b - dist_a) + } else { + 1.0 - (dist_b - dist_a) + } +} + +pub async fn search(db: &Database, args: Vec, no_separator_flag: bool) -> Option { + let mut results: BTreeMap = BTreeMap::new(); + let start_t = chrono::Utc::now(); + + if args.is_empty() { + return None; + } + + let args_count = args.len(); + + let arg_words = args.clone(); + + //let word = format!("_{}_", word); + + let first_query = args.first().cloned(); + + let mut hash = vec![]; + for (i, word) in args.into_iter().enumerate() { + hash.push((i, cached_hash(db, word.clone()).await)); + //hash.push((i, cached_hash(db, format!("{}.", word)).await)); + //hash.push((i, cached_hash(db, format!(".{}", word)).await)); + //hash.push((i, cached_hash(db, format!(".{}.", word)).await)); + //hash.push((i, cached_hash(db, format!("{}s", word)).await)); + } + + //let hash: Vec<(usize, STRHASH)> = hash.into_iter().filter_map(|v| v.1.map(|b| (v.0, b))).collect(); + + if hash.is_empty() { + println!("none in database"); + return None; + } + + let first_query = first_query.unwrap(); + + let SECONDARY_WORDS = [ + db::hash("how"), + db::hash("is"), + db::hash("are"), + db::hash("the"), + db::hash("a"), + db::hash("when"), + db::hash("what"), + db::hash("why"), + db::hash("to"), + db::hash("where"), + db::hash("from"), + db::hash("best"), + db::hash("for"), + db::hash("like"), + ]; + + let mut secondary_indices = BTreeSet::new(); + + let mut word_occurs = BTreeMap::new(); + for hash in &hash { + if SECONDARY_WORDS.contains(&hash.1) { + secondary_indices.insert(hash.0); + } + word_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + db::word_occurs(db, hash.1).await); + } + //let mut authorword_occurs = BTreeMap::new(); + let mut descriptionword_occurs = BTreeMap::new(); + let mut keyword_occurs = BTreeMap::new(); + //let mut sitenameword_occurs = BTreeMap::new(); + for hash in &hash { + //authorword_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + // db::metaword_occurs(db, db::hash("author"), hash.1).await); + descriptionword_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + db::metaword_occurs(db, db::hash("description"), hash.1).await); + keyword_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + db::metaword_occurs(db, db::hash("keywords"), hash.1).await); + //sitenameword_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + // db::metaword_occurs(db, db::hash("site_name"), hash.1).await); + } + let mut linkword_occurs = BTreeMap::new(); + for hash in &hash { + linkword_occurs.entry(hash.0).or_insert(VecDeque::new()).extend( + db::linkword_occurs(db, hash.1).await); + } + + let mut urls = vec![]; + + for (_, vals) in &word_occurs { + for (url, _) in vals { + urls.push(*url); + } + } + for (_, vals) in &linkword_occurs { + for (url, _) in vals { + urls.push(*url); + } + } + for (_, vals) in &descriptionword_occurs { + for (url, _) in vals { + urls.push(*url); + } + } + for (_, vals) in &keyword_occurs { + for (url, _) in vals { + urls.push(*url); + } + } + + let mut useless_urls = vec![]; + + // we want to remove urls that aren't contained in every word index (i.e. urls that don't contain every word of the search query) + // however, we don't want to remove the url if it's not contained in a secondary index (i.e. if someone searches "best x", + // we don't want to remove results that don't contain the word "best") + // we also don't want to remove results if the page doesn't have that word, but the linkwords / metawords does + for url in &urls { + // for every word index... + for (index, vals) in &word_occurs { + // don't worry about secondary indices + if secondary_indices.contains(index) { + continue; + } + // collect urls + let urls: Vec = vals.iter().map(|(url, _)| *url).collect(); + // is this url not in the words bucket for this index? + if !urls.contains(url) { + // does another bucket contain it for this index? + let mut found_elsewhere = 0; + if linkword_occurs.get(index).unwrap().iter() + .map(|(url, _)| *url).collect::>().contains(url) { + found_elsewhere += 1; + } + if descriptionword_occurs.get(index).unwrap().iter() + .map(|(url, _)| *url).collect::>().contains(url) { + found_elsewhere += 1; + } + if keyword_occurs.get(index).unwrap().iter() + .map(|(url, _)| *url).collect::>().contains(url) { + found_elsewhere += 1; + } + + if found_elsewhere < 2 { + // not found anywhere else, thus this url doesn't match every meaningful word in the query + useless_urls.push(*url); + } + } + } + } + + //for (_, vals) in &authorword_occurs { + // for (url, _) in vals { + // urls.push(*url); + // } + //} + //for (_, vals) in &sitenameword_occurs { + // for (url, _) in vals { + // urls.push(*url); + // } + //} + //for url in &urls { + // for (_, vals) in &linkword_occurs { + // let urls: Vec = vals.iter().map(|(u, _)| *u).collect(); + // if !urls.contains(url) { + // useless_urls.push(*url); + // } + // } + //} + + urls.sort(); + urls.dedup(); + urls.retain(|u| !useless_urls.contains(u)); + + for vals in word_occurs.values_mut() { + vals.retain(|(u, _)| !useless_urls.contains(u)); + } + for vals in linkword_occurs.values_mut() { + vals.retain(|(u, _)| !useless_urls.contains(u)); + } + for vals in descriptionword_occurs.values_mut() { + vals.retain(|(u, _)| !useless_urls.contains(u)); + } + for vals in keyword_occurs.values_mut() { + vals.retain(|(u, _)| !useless_urls.contains(u)); + } + + let start = chrono::Utc::now(); + + let mut word_count = Arc::new(Mutex::new(BTreeMap::new())); + + let mut allowed = Arc::new(AtomicUsize::new(0)); + let mut pr_acc = 0.0; + + const ALLOWED_BEFORE_PRUNE: usize = 512; + const ALLOWED_BEFORE_MEGAPRUNE: usize = 777; + const ALLOWED_BEFORE_GIGAPRUNE: usize = 2048; + //const ICKY_WORDS: &[&str] = &[ + // "distrowatch.com", // distrowatch is taking up too many results at the moment, remove this later + // "mariowiki.com", // mariowiki is taking up too many results at the moment, remove this later + // "wired.com", // we have too many wired articles + // "wired.cz", // we are very targeted at an english audience, they probably don't want czech wired articles at the moment + // "neocities.org/browse?", // people probably don't want to visit neocities tag lists + // "https://distrowatch.com/?language=", // people probably aren't looking for the distrowatch homepage in a random language + // "https://distrowatch.com/weekly.php/weekly.php?issue=", // a lot of results are unrelated distrowatch weekly posts + // "terms", // people probably aren't looking for tos pages + // "statement", // people probably aren't looking for tos pages + // "3cx", // nonenglish voip company, takes up unrelated search queries + // "1377x", // phishing site pretending to be 1337x, temporary fix until we can implement something like site blocking + // "//kickasstorrents.", // kickasstorrents has been down for years, only remaining sites are likely phishing scams + // "//kickasstorrent.", // kickasstorrents has been down for years, only remaining sites are likely phishing scams + // "//katcr.to", // fake kickasstorrents site + // "//kat.am", // fake kickasstorrents site + // "//kikass.to", // fake kickasstorrents site + // "//thepiratebays.com", // fake thepiratebay site + // ".fandom.com", // fuck fandom.com (todo: remove this since ultimately, it should be the user's choice to block fandom) + //]; + + // todo: since our list is so small this is okay for now, but we should cache this in the future + let deranks = Arc::new(db::get_deranked_websites(db).await); + + let mut initial_pruned = Arc::new(Mutex::new(vec![])); + // url, reason + let mut blocked: Arc>> = Arc::new(Mutex::new(vec![])); + + debug!("checking {} urls", urls.len()); + + let mut url_tasks = vec![]; + for (i, url) in urls.into_iter().enumerate() { + let allowed = allowed.clone(); + let blocked = blocked.clone(); + let initial_pruned = initial_pruned.clone(); + let word_count = word_count.clone(); + let arg_words = arg_words.clone(); + let deranks = deranks.clone(); + url_tasks.push(tokio::spawn(async move { + if i > ALLOWED_BEFORE_GIGAPRUNE { + initial_pruned.lock().unwrap().push(url); + return; + } + let db = Database::default().expect("FAILED TO CREATE NEW FDB HANDLE"); + let surl = { + cached_unhash(&db, url).await + }.to_lowercase(); + let mut contains_query_word = false; + for w in &arg_words { + if surl.contains(w) { + contains_query_word = true; + break; + } + } + let mut prepruned = false; + for (_, derank) in deranks.iter() { + if surl.contains(&derank.urlmatch) || surl.contains(&derank.urlmatch.replace("//", ".")) { + if let Some(and) = &derank.and { + if !surl.contains(and) { + continue; + } + } + if let Some(unless) = &derank.unless { + if surl.contains(unless) { + continue; + } + } + if !contains_query_word && + (i > ALLOWED_BEFORE_MEGAPRUNE || (i > ALLOWED_BEFORE_PRUNE && derank.amount < 0.85)) && + !contains_query_word { + initial_pruned.lock().unwrap().push(url); + prepruned = true; + } + if derank.amount == 0.0 { + initial_pruned.lock().unwrap().push(url); + blocked.lock().unwrap().push((surl.clone(), derank.comment.clone())); + prepruned = true; + } + } + } + if prepruned { + return; + } + let pr = pagerank_approx(&db, url, 0).await; + if i > ALLOWED_BEFORE_PRUNE { + let mut contains_query_word = false; + for w in &arg_words { + if surl.contains(w) { + contains_query_word = true; + break; + } + } + if contains_query_word || (pr > (((pr_acc / i as f64).max(0.01)) * if i > ALLOWED_BEFORE_MEGAPRUNE { 4.0 } else { 1.0 }) || (i < ALLOWED_BEFORE_MEGAPRUNE)) { + let wc = db::page_word_count(&db, url).await; + word_count.lock().unwrap().insert(url, wc); + pr_acc += pr; + allowed.fetch_add(1, Ordering::Relaxed); + } else { + initial_pruned.lock().unwrap().push(url); + } + } else { + let wc = db::page_word_count(&db, url).await; + word_count.lock().unwrap().insert(url, wc); + pr_acc += pr; + allowed.fetch_add(1, Ordering::Relaxed); + } + //let url = { + //}; + //debug!("{} pr: {}", url, pr); + //debug!("{} wc: {}", url, wc); + + // precache values + cached_unhash(&db, url).await; + cached_title(&db, url).await; + cached_desc(&db, url).await; + })); + } + + for url_task in url_tasks { + url_task.await.expect("url task failure"); + } + + let initial_pruned = initial_pruned.lock().unwrap().clone(); + let word_count = word_count.lock().unwrap().clone(); + + debug!("pruned {} results ({pr_acc}, {})", initial_pruned.len(), allowed.load(Ordering::Relaxed)); + + for vals in word_occurs.values_mut() { + vals.retain(|(u, _)| !initial_pruned.contains(u)); + } + for vals in linkword_occurs.values_mut() { + vals.retain(|(u, _)| !initial_pruned.contains(u)); + } + for vals in descriptionword_occurs.values_mut() { + vals.retain(|(u, _)| !initial_pruned.contains(u)); + } + for vals in keyword_occurs.values_mut() { + vals.retain(|(u, _)| !initial_pruned.contains(u)); + } + + let pagerank_secs = chrono::Utc::now().signed_duration_since(start).num_milliseconds() as f64 / 1000.0; + + info!("pageranks in {} secs", pagerank_secs); + + //word_occurs.sort_by(|a, b| { + // let av = *PRECALCED_PAGERANKS.lock().unwrap().get(&b.1.0).unwrap(); + // av.total_cmp(PRECALCED_PAGERANKS.lock().unwrap().get(&a.1.0).unwrap()) + //}); + //metaword_occurs.sort_by(|a, b| { + // let av = *PRECALCED_PAGERANKS.lock().unwrap().get(&b.1.0).unwrap(); + // av.total_cmp(PRECALCED_PAGERANKS.lock().unwrap().get(&a.1.0).unwrap()) + //}); + //linkword_occurs.sort_by(|a, b| { + // let av = *PRECALCED_PAGERANKS.lock().unwrap().get(&b.1.0).unwrap(); + // av.total_cmp(PRECALCED_PAGERANKS.lock().unwrap().get(&a.1.0).unwrap()) + //}); + + pub const MULTIWORD_PENALTY: f64 = 0.0001; + pub const PHRASE_PERCENTAGE: f64 = 0.7; + + for ((position, vals)) in word_occurs.iter() { + if let Some(vals2) = word_occurs.get(&(*position + 1)) { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distacc = 0.0; + let mut distc = 0; + let mut smallest = f64::MAX; + let mut largest = 0.0; + let mut phrase_matches = 0; + for i in 0..occurs { + let offset = (i * 2) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + for (url_b, occurs_b) in vals2 { + if url_a != url_b { + continue; + } + let occurs2 = u64::from_be_bytes(occurs_b.split_at(std::mem::size_of::()).0.try_into().unwrap()); + for j in 0..occurs2 { + let offset2 = (j * 2) + 8; + let dist2 = occurs_b[offset2 as usize] as f64 / 255.0; + distacc += (dist2 - dist); + if (dist2 - dist) >= 0.0 && (dist2 - dist) < smallest { + smallest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) > largest { + largest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) <= (2.1 / (*word_count.get(url_a).unwrap_or(&1) as f64).max(1.0)) { + phrase_matches += 1; + } + distc += 1; + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0) * multiword_penalty(dist, dist2); + } + } + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: acc, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: 0.0, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: f64::MAX, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.word_occurs = acc; + res.words_contained.insert(*position); + res.match_acc += distacc; + res.match_c += distc as f64; + if smallest < res.closest_match { + res.closest_match = smallest; + } + if largest < res.highest_match { + res.highest_match = largest; + } + res.phrase_match_count += phrase_matches as f64; + *res.words.entry(*position).or_insert(0) += 1; + } + } else { + for (urlv, occursv) in vals { + let url = { + cached_unhash(db, *urlv).await + }; + let occurs = u64::from_be_bytes(occursv.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distc = 0; + for i in 0..occurs { + let offset = (i * 2) + 8; + let dist = occursv[offset as usize] as f64 / 255.0; + //distc += 1; + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0); + } + let res = results.entry(*urlv).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *urlv).await, + description: cached_desc(db, *urlv).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: acc, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: 0.0, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: 0.0, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.word_occurs = acc; + res.words_contained.insert(*position); + *res.words.entry(*position).or_insert(0) += 1; + } + } + } + + for ((position, vals)) in linkword_occurs.iter() { + if let Some(vals2) = linkword_occurs.get(&(*position + 1)) { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distacc = 0.0; + let mut distc = 0; + let mut smallest = f64::MAX; + let mut largest = 0.0; + let mut phrase_matches = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + for (url_b, occurs_b) in vals2 { + if url_a != url_b { + distc -= 4; + continue; + } + let occurs2 = u64::from_be_bytes(occurs_b.split_at(std::mem::size_of::()).0.try_into().unwrap()); + for j in 0..occurs2 { + let offset2 = (j) + 8; + let dist2 = occurs_b[offset2 as usize] as f64 / 255.0; + distacc += (dist2 - dist) * 12.0; + distc += 1; + if (dist2 - dist) < smallest { + smallest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) > largest { + largest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) <= (2.1 / (*word_count.get(url_a).unwrap_or(&1) as f64).max(20.0)) { + phrase_matches += 1; + } + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0) * multiword_penalty(dist, dist2); + } + } + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: f64::MAX, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.linkword_occurs = acc; + res.match_acc += distacc; + res.match_c += distc as f64; + if smallest < res.closest_match { + res.closest_match = smallest; + } + res.phrase_match_count += phrase_matches as f64; + *res.words.entry(*position).or_insert(0) += 1; + } + } else { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distc = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + //distc += 1; + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0); + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: 0.0, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.linkword_occurs = acc; + res.words_contained.insert(*position); + *res.words.entry(*position).or_insert(0) += 1; + } + } + } + + for ((position, vals)) in descriptionword_occurs.iter() { + if let Some(vals2) = descriptionword_occurs.get(&(*position + 1)) { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distacc = 0.0; + let mut distc = 0; + let mut smallest = f64::MAX; + let mut largest = 0.0; + let mut phrase_matches = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + for (url_b, occurs_b) in vals2 { + if url_a != url_b { + distc -= 4; + continue; + } + let occurs2 = u64::from_be_bytes(occurs_b.split_at(std::mem::size_of::()).0.try_into().unwrap()); + for j in 0..occurs2 { + let offset2 = (j) + 8; + let dist2 = occurs_b[offset2 as usize] as f64 / 255.0; + distacc += (dist2 - dist) * 12.0; + distc += 1; + if (dist2 - dist) < smallest { + smallest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) > largest { + largest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) <= (2.1 / (*word_count.get(url_a).unwrap_or(&1) as f64).max(20.0)) { + phrase_matches += 1; + } + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0) * multiword_penalty(dist, dist2); + } + } + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: f64::MAX, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.descriptionword_occurs = acc; + res.match_acc += distacc; + res.match_c += distc as f64; + if smallest < res.closest_match { + res.closest_match = smallest; + } + res.phrase_match_count += phrase_matches as f64; + *res.words.entry(*position).or_insert(0) += 1; + } + } else { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distc = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + //distc += 1; + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0); + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: 0.0, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.descriptionword_occurs = acc; + res.words_contained.insert(*position); + *res.words.entry(*position).or_insert(0) += 1; + } + } + } + + for ((position, vals)) in keyword_occurs.iter() { + if let Some(vals2) = keyword_occurs.get(&(*position + 1)) { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distacc = 0.0; + let mut distc = 0; + let mut smallest = f64::MAX; + let mut largest = 0.0; + let mut phrase_matches = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + for (url_b, occurs_b) in vals2 { + if url_a != url_b { + distc -= 4; + continue; + } + let occurs2 = u64::from_be_bytes(occurs_b.split_at(std::mem::size_of::()).0.try_into().unwrap()); + for j in 0..occurs2 { + let offset2 = (j) + 8; + let dist2 = occurs_b[offset2 as usize] as f64 / 255.0; + distacc += (dist2 - dist) * 12.0; + distc += 1; + if (dist2 - dist) < smallest { + smallest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) > largest { + largest = (dist2 - dist); + } + if (dist2 - dist) >= 0.0 && (dist2 - dist) <= (2.1 / (*word_count.get(url_a).unwrap_or(&1) as f64).max(20.0)) { + phrase_matches += 1; + } + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0) * multiword_penalty(dist, dist2); + } + } + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: f64::MAX, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.keyword_occurs = acc; + res.match_acc += distacc; + res.match_c += distc as f64; + if smallest < res.closest_match { + res.closest_match = smallest; + } + res.phrase_match_count += phrase_matches as f64; + *res.words.entry(*position).or_insert(0) += 1; + } + } else { + for (url_a, occurs_a) in vals { + let url = { + cached_unhash(db, *url_a).await + }; + let occurs = u64::from_be_bytes(occurs_a.split_at(std::mem::size_of::()).0.try_into().unwrap()); + let mut acc = 0.0; + let mut distc = 0; + for i in 0..occurs { + let offset = (i) + 8; + let dist = occurs_a[offset as usize] as f64 / 255.0; + //distc += 1; + acc += ((-(2.0 * dist + 1.0).log(1.2) / 30.0) + 1.0); + } + let res = results.entry(*url_a).or_insert(SearchResult { + url: url.clone(), + title: cached_title(db, *url_a).await, + description: cached_desc(db, *url_a).await, + url_contains_result: if url.contains(&first_query) { Some(url.len()) } else { None }, + word_occurs: 0.0, + authorword_occurs: 0.0, + descriptionword_occurs: 0.0, + keyword_occurs: 0.0, + sitename_occurs: 0.0, + linkword_occurs: acc, + pagerank: 0.0, + relavence: 0.0, + words_contained: BTreeSet::new(), + total_query_words: args_count as f64, + words: Default::default(), + closest_match: 0.0, + phrase_match_count: 0.0, + match_acc: 0.0, + match_c: 0.0, + highest_match: 0.0, + }); + res.keyword_occurs = acc; + res.words_contained.insert(*position); + *res.words.entry(*position).or_insert(0) += 1; + } + } + } + + let mut max_relavence = 0.0; + let mut longest_url = 1; + let mut max_words = 1; + + let mut phrase_found = false; + + // todo: move to database + + results.iter_mut().for_each(|v| { + v.1.pagerank = *PRECALCED_PAGERANKS.lock().unwrap().get(v.0).unwrap_or( + CACHED_PAGERANKS.lock().unwrap().get(v.0).unwrap() + ); + + //debug!("{},{}", v.1.phrase_match_count, args_count); + if v.1.phrase_match_count + 1.0 >= args_count as f64 { + phrase_found = true; + } + if v.1.url.len() > longest_url { + longest_url = v.1.url.len(); + } + let mut wc = 1; + for word in &arg_words { + if v.1.url.to_lowercase().contains(word) { + wc += 1; + } + } + if wc > max_words { + max_words = wc; + } + + v.1.relavence = v.1.relavence(no_separator_flag); + + //debug!("{} -> {}/{}", v.1.url, v.1.words_contained, v.1.total_query_words); + if v.1.relavence > max_relavence { + max_relavence = v.1.relavence; + } + }); + + results.iter_mut().for_each(|v| { + let url_multiplier = ((v.1.url.len() as f64 * 2.3) / (longest_url as f64)); + //debug!("url {} multiplier {}", v.1.url, url_multiplier); + let mut word_multiplier = 1; + for word in &arg_words { + if v.1.url.to_lowercase().contains(word) { + word_multiplier += 1; + } + } + let word_multiplier = (word_multiplier as f64 * 4.0) / max_words as f64; + + let mut icky_found = 1.0; + for (_, derank) in deranks.iter() { + if v.1.url.contains(&derank.urlmatch) { + if let Some(and) = &derank.and { + if !v.1.url.contains(and) { + continue; + } + } + if let Some(unless) = &derank.unless { + if v.1.url.contains(unless) { + continue; + } + } + icky_found *= derank.amount; + } + } + + v.1.relavence *= word_multiplier.powi(8).min((max_words as f64).powi(8)); + v.1.relavence /= url_multiplier.max(1.0).powi(4); + v.1.relavence *= icky_found; + }); + + //results.iter_mut().for_each(|v| v.relevance /= max_occurs as f64); + + let mut results: Vec = results.into_iter().map(|v| v.1).collect(); + + max_relavence = 0.0; + results.sort_by(|a, b| { + if a.relavence > max_relavence { + max_relavence = a.relavence; + } + if b.relavence > max_relavence { + max_relavence = a.relavence; + } + b.relavence.total_cmp(&a.relavence) + }); + + let mut results_final = vec![]; + for result in results { + results_final.push(searchservice::SearchResult { + url: result.url, + relevance: result.relavence, + title: result.title, + description: result.description, + }); + } + + let time = chrono::Utc::now().signed_duration_since(start_t).num_milliseconds() as f64 / 1000.0; + + let blocked = blocked.lock().unwrap(); + + Some(searchservice::SearchResponse { + results: results_final, + blocked: blocked.clone(), + pagerank_time_seconds: pagerank_secs, + total_query_seconds: time, + max_relevance: max_relavence, + exact_phrase_found: phrase_found, + }) +} \ No newline at end of file diff --git a/src/hacks.rs b/src/hacks.rs new file mode 100644 index 0000000..2134715 --- /dev/null +++ b/src/hacks.rs @@ -0,0 +1,62 @@ +/* + * searchservice hacks.rs + * - awful awful solutions to our issues + * + * Copyright (C) 2025 Real Microsoft, LLC + * + * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License along with this program. If not, see . +*/ + +use std::ops::{ RangeInclusive}; + +const BURMESE_RANGE: RangeInclusive = '\u{1000}'..='\u{104f}'; +const CHINESE_RANGE1: RangeInclusive = '\u{4e00}'..='\u{9fff}'; +const CHINESE_RANGE2: RangeInclusive = '\u{3400}'..='\u{4dbf}'; +const CHINESE_RANGE3: RangeInclusive = '\u{20000}'..='\u{2a6df}'; +const CHINESE_RANGE4: RangeInclusive = '\u{2A700}'..='\u{2B73F}'; +const CHINESE_RANGE5: RangeInclusive = '\u{2B740}'..='\u{2B81F}'; +const CHINESE_RANGE6: RangeInclusive = '\u{2B820}'..='\u{2CEAF}'; +const CHINESE_RANGE7: RangeInclusive = '\u{2CEB0}'..='\u{2EBEF}'; +const CHINESE_RANGE8: RangeInclusive = '\u{30000}'..='\u{3134F}'; +const CHINESE_RANGE9: RangeInclusive = '\u{31350}'..='\u{323AF}'; +const CHINESE_RANGE10: RangeInclusive = '\u{2EBF0}'..='\u{2EE5F}'; +const CHINESE_RANGE11: RangeInclusive = '\u{F900}'..='\u{FAFF}'; +const JAPANESE_RANGE1: RangeInclusive = '\u{3040}'..='\u{309F}'; +/// KATAKANA +const JAPANESE_RANGE2: RangeInclusive = '\u{30A0}'..='\u{30FF}'; +const JAVANESE_RANGE: RangeInclusive = '\u{A980}'..='\u{A9DF}'; +const KHMER_RANGE1: RangeInclusive = '\u{1780}'..='\u{17FF}'; +const KHMER_RANGE2: RangeInclusive = '\u{19E0}'..='\u{19FF}'; +const LAO_RANGE: RangeInclusive = '\u{0E80}'..='\u{0EFF}'; +const PHAGSPA_RANGE: RangeInclusive = '\u{A840}'..='\u{A87F}'; +const TAITHAM_RANGE: RangeInclusive = '\u{1A20}'..='\u{1AAF}'; +const THAI_RANGE: RangeInclusive = '\u{0E00}'..='\u{E07F}'; +const TIBETAN_RANGE: RangeInclusive = '\u{0F00}'..='\u{0FFF}'; +const NO_WORD_BOUNDRIES: &[RangeInclusive] = &[ + BURMESE_RANGE, + CHINESE_RANGE1, CHINESE_RANGE2, CHINESE_RANGE3, CHINESE_RANGE4, CHINESE_RANGE5, CHINESE_RANGE6, CHINESE_RANGE7, CHINESE_RANGE8, CHINESE_RANGE9, CHINESE_RANGE10, CHINESE_RANGE11, + JAPANESE_RANGE1, JAPANESE_RANGE2, + JAVANESE_RANGE, + KHMER_RANGE1, KHMER_RANGE2, + LAO_RANGE, + PHAGSPA_RANGE, + TAITHAM_RANGE, + THAI_RANGE, + TIBETAN_RANGE, +]; + +pub fn is_from_language_that_doesnt_use_word_separators(str: &str) -> bool { + for c in str.chars() { + for range in NO_WORD_BOUNDRIES { + if range.contains(&c) { + return true; + } + } + } + + false +} \ No newline at end of file diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..570f820 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,91 @@ +/* + * searchservice main.rs + * - entrypoint for the asklyphe search service + * + * Copyright (C) 2025 Real Microsoft, LLC + * + * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License along with this program. If not, see . +*/ + +pub mod algorithm; +pub mod hacks; +mod process; + +use std::cmp::max; +use std::future::Future; +use std::io::Read; +use std::string::ToString; +use std::sync::Arc; +use std::sync::atomic::{AtomicI64, AtomicU64, Ordering}; +use std::time::Duration; +use async_nats::jetstream; +use async_nats::jetstream::consumer::PullConsumer; +use async_nats::jetstream::stream::RetentionPolicy; +use futures::StreamExt; +use log::{error, info, warn}; +use once_cell::sync::Lazy; +use tokio::sync::Mutex; +use tokio::task::JoinHandle; +use asklyphe_common::{db, foundationdb}; +use asklyphe_common::foundationdb::Database; +use asklyphe_common::nats::comms; +use asklyphe_common::nats::comms::{Service, ServiceResponse}; +use asklyphe_common::nats::searchservice::SearchSrvcResponse; + +pub static NATS_URL: Lazy = Lazy::new(|| std::env::var("NATS_URL").expect("NO NATS DEFINED")); +pub static NATS_CERT: Lazy = Lazy::new(|| std::env::var("NATS_CERT").expect("NO NATS_CERT DEFINED")); +pub static NATS_KEY: Lazy = Lazy::new(|| std::env::var("NATS_KEY").expect("NO NATS_KEY DEFINED")); + +pub static PROCESSES_HANDLED: AtomicU64 = AtomicU64::new(0); +pub static LAST_MESSAGE: AtomicI64 = AtomicI64::new(0); + +#[tokio::main] +async fn main() { + let _guard = unsafe { foundationdb::boot() }; + env_logger::init(); + info!("searchservice began at {}", chrono::Utc::now().to_string()); + let nats = async_nats::ConnectOptions::new() + .add_client_certificate(NATS_CERT.as_str().into(), NATS_KEY.as_str().into()) + .connect(NATS_URL.as_str()) + .await; + if let Err(e) = nats { + error!("FATAL ERROR, COULDN'T CONNECT TO NATS: {}", e); + return; + } + let nats = nats.unwrap(); + let nats = jetstream::new(nats); + + info!("searchbot spawned"); + + async fn on_recv(query: comms::Query) -> ServiceResponse { + let db = Database::default().expect("couldn't connect to foundation db!"); + let now = chrono::Utc::now().timestamp(); + LAST_MESSAGE.store(now, Ordering::Relaxed); + + let response = match query { + comms::Query::SearchService(query) => { + process::process(query, db).await + } + _ => { + SearchSrvcResponse::InvalidRequest + } + }; + + if PROCESSES_HANDLED.load(Ordering::Relaxed) % 100 == 0 { + info!("handled {} requests!", PROCESSES_HANDLED.load(Ordering::Relaxed)); + } + PROCESSES_HANDLED.fetch_add(1, Ordering::Relaxed); + ServiceResponse::SearchService(response) + } + + if let Err(e) = comms::subscribe_service(Service::SearchService, &nats, Arc::new(on_recv)).await { + error!("failed to subscribe to searchservice nats! reason {:?}", e); + } + + // we will respawn tasks if they crash + drop(_guard); +} diff --git a/src/process.rs b/src/process.rs new file mode 100644 index 0000000..8a990f3 --- /dev/null +++ b/src/process.rs @@ -0,0 +1,118 @@ +/* + * searchservice process.rs + * - route incoming nats requests to their specific functions + * + * Copyright (C) 2025 Real Microsoft, LLC + * + * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License along with this program. If not, see . +*/ + +use std::sync::Arc; +use async_nats::{jetstream, Subject}; +use log::{debug, error, warn}; +use tokio::sync::Mutex; +use futures::StreamExt; +use asklyphe_common::db::tables::{INFO_TABLE, WEBSITE_TABLE}; +use asklyphe_common::foundationdb::{Database, KeySelector, RangeOption}; +use asklyphe_common::foundationdb::options::{StreamingMode, TransactionOption}; +use asklyphe_common::foundationdb::tuple::{pack, Subspace}; +use asklyphe_common::nats::searchservice; +use asklyphe_common::nats::searchservice::{SearchSrvcQuery, SearchSrvcRequest, SearchSrvcResponse, SearchRequest, SiteCountResponse, SearchResponse}; +use crate::{algorithm, hacks}; + +pub async fn process(query: SearchSrvcQuery, db: Database) -> SearchSrvcResponse { + // a future is used so that the whole program doesn't die if an algorithm panics + let response = tokio::spawn(async move { + match query.request { + SearchSrvcRequest::SearchRequest(req) => { + search_request(req, &db).await + } + SearchSrvcRequest::SiteCountRequest => { + count_websites(&db).await + } + }}).await; + + if let Ok(response) = response { + response + } else if let Err(e) = response { + SearchSrvcResponse::OtherError(e.to_string()) + } else { + unreachable!() + } +} + +pub async fn search_request(req: SearchRequest, db: &Database) -> SearchSrvcResponse { + let words_initial: Vec = req.query.split_whitespace().map(|s| s.to_string()).collect(); + let mut words = vec![]; + let mut no_separator_flag = false; + for word in words_initial { + if hacks::is_from_language_that_doesnt_use_word_separators(&word) { + words.extend(word.chars().map(|c| c.to_string()).collect::>()); + no_separator_flag = true; + } else { + words.push(word); + } + } + + match algorithm::search(&db, words, no_separator_flag).await { + Some(results) => { + SearchSrvcResponse::SearchResponse(results) + } + None => { + SearchSrvcResponse::SearchResponse(SearchResponse { + results: vec![], + blocked: vec![], + pagerank_time_seconds: 0.0, + total_query_seconds: 0.0, + max_relevance: 0.0, + exact_phrase_found: false, + }) + } + } +} + +pub async fn count_websites(db: &Database) -> SearchSrvcResponse { + let mut counter: u64 = 0; + let subspace = Subspace::from(WEBSITE_TABLE); + let mut last_key = subspace.range().0; + let final_key = subspace.range().1; + + for _failsafe in 0..10000 { + let trx = db.create_trx(); + if let Err(e) = trx { + error!("DATABASE ERROR page_links_exiting_count {e}"); + } else { + let trx = trx.unwrap(); + // link -> from -> * + let mut range = RangeOption::from((last_key.clone(), final_key.clone())); + range.mode = StreamingMode::Iterator; + range.limit = Some(10096); + + let mut stream = trx.get_ranges_keyvalues(range, true); + + let mut this_time = 0; + + while let Some(kv) = stream.next().await { + if let Ok(kv) = kv { + counter += 1; + this_time += 1; + last_key = kv.key().to_vec(); + } else if let Err(e) = kv { + eprintln!("err while counting {e}"); + } + } + + if this_time <= 10 { + return SearchSrvcResponse::SiteCountResponse(SiteCountResponse { + count: counter / 8, + }); + } + } + + } + SearchSrvcResponse::OtherError("couldn't retrieve count ):".to_string()) +} \ No newline at end of file