1use crate::{embedding::EmbeddingProvider, parsing::Span, JobHandle};
2use gpui::executor::Background;
3use parking_lot::Mutex;
4use smol::channel;
5use std::{mem, ops::Range, path::Path, sync::Arc, time::SystemTime};
6
7#[derive(Clone)]
8pub struct FileToEmbed {
9 pub worktree_id: i64,
10 pub path: Arc<Path>,
11 pub mtime: SystemTime,
12 pub spans: Vec<Span>,
13 pub job_handle: JobHandle,
14}
15
16impl std::fmt::Debug for FileToEmbed {
17 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
18 f.debug_struct("FileToEmbed")
19 .field("worktree_id", &self.worktree_id)
20 .field("path", &self.path)
21 .field("mtime", &self.mtime)
22 .field("spans", &self.spans)
23 .finish_non_exhaustive()
24 }
25}
26
27impl PartialEq for FileToEmbed {
28 fn eq(&self, other: &Self) -> bool {
29 self.worktree_id == other.worktree_id
30 && self.path == other.path
31 && self.mtime == other.mtime
32 && self.spans == other.spans
33 }
34}
35
36pub struct EmbeddingQueue {
37 embedding_provider: Arc<dyn EmbeddingProvider>,
38 pending_batch: Vec<FileFragmentToEmbed>,
39 executor: Arc<Background>,
40 pending_batch_token_count: usize,
41 finished_files_tx: channel::Sender<FileToEmbed>,
42 finished_files_rx: channel::Receiver<FileToEmbed>,
43}
44
45#[derive(Clone)]
46pub struct FileFragmentToEmbed {
47 file: Arc<Mutex<FileToEmbed>>,
48 span_range: Range<usize>,
49}
50
51impl EmbeddingQueue {
52 pub fn new(embedding_provider: Arc<dyn EmbeddingProvider>, executor: Arc<Background>) -> Self {
53 let (finished_files_tx, finished_files_rx) = channel::unbounded();
54 Self {
55 embedding_provider,
56 executor,
57 pending_batch: Vec::new(),
58 pending_batch_token_count: 0,
59 finished_files_tx,
60 finished_files_rx,
61 }
62 }
63
64 pub fn push(&mut self, file: FileToEmbed) {
65 if file.spans.is_empty() {
66 self.finished_files_tx.try_send(file).unwrap();
67 return;
68 }
69
70 let file = Arc::new(Mutex::new(file));
71
72 self.pending_batch.push(FileFragmentToEmbed {
73 file: file.clone(),
74 span_range: 0..0,
75 });
76
77 let mut fragment_range = &mut self.pending_batch.last_mut().unwrap().span_range;
78 for (ix, span) in file.lock().spans.iter().enumerate() {
79 let span_token_count = if span.embedding.is_none() {
80 span.token_count
81 } else {
82 0
83 };
84
85 let next_token_count = self.pending_batch_token_count + span_token_count;
86 if next_token_count > self.embedding_provider.max_tokens_per_batch() {
87 let range_end = fragment_range.end;
88 self.flush();
89 self.pending_batch.push(FileFragmentToEmbed {
90 file: file.clone(),
91 span_range: range_end..range_end,
92 });
93 fragment_range = &mut self.pending_batch.last_mut().unwrap().span_range;
94 }
95
96 fragment_range.end = ix + 1;
97 self.pending_batch_token_count += span_token_count;
98 }
99 }
100
101 pub fn flush(&mut self) {
102 let batch = mem::take(&mut self.pending_batch);
103 self.pending_batch_token_count = 0;
104 if batch.is_empty() {
105 return;
106 }
107
108 let finished_files_tx = self.finished_files_tx.clone();
109 let embedding_provider = self.embedding_provider.clone();
110
111 self.executor.spawn(async move {
112 let mut spans = Vec::new();
113 for fragment in &batch {
114 let file = fragment.file.lock();
115 spans.extend(
116 {
117 file.spans[fragment.span_range.clone()]
118 .iter().filter(|d| d.embedding.is_none())
119 .map(|d| d.content.clone())
120 }
121 );
122 }
123
124 // If spans is 0, just send the fragment to the finished files if its the last one.
125 if spans.len() == 0 {
126 for fragment in batch.clone() {
127 if let Some(file) = Arc::into_inner(fragment.file) {
128 finished_files_tx.try_send(file.into_inner()).unwrap();
129 }
130 }
131 return;
132 };
133
134 match embedding_provider.embed_batch(spans).await {
135 Ok(embeddings) => {
136 let mut embeddings = embeddings.into_iter();
137 for fragment in batch {
138 for span in
139 &mut fragment.file.lock().spans[fragment.span_range.clone()].iter_mut().filter(|d| d.embedding.is_none())
140 {
141 if let Some(embedding) = embeddings.next() {
142 span.embedding = Some(embedding);
143 } else {
144 log::error!("number of embeddings returned different from number of documents");
145 }
146 }
147
148 if let Some(file) = Arc::into_inner(fragment.file) {
149 finished_files_tx.try_send(file.into_inner()).unwrap();
150 }
151 }
152 }
153 Err(error) => {
154 log::error!("{:?}", error);
155 }
156 }
157 })
158 .detach();
159 }
160
161 pub fn finished_files(&self) -> channel::Receiver<FileToEmbed> {
162 self.finished_files_rx.clone()
163 }
164}