120 lines
3.5 KiB
Rust
120 lines
3.5 KiB
Rust
mod cache_info;
|
|
|
|
use std::{cmp, fs, io::Write, path::Path};
|
|
|
|
use anyhow::{anyhow, Result};
|
|
use cache_info::CacheInfo;
|
|
use futures_util::StreamExt;
|
|
use indicatif::{ProgressBar, ProgressStyle};
|
|
use tabby_common::path::ModelDir;
|
|
|
|
impl CacheInfo {
|
|
async fn download(
|
|
&mut self,
|
|
model_id: &str,
|
|
path: &str,
|
|
prefer_local_file: bool,
|
|
) -> Result<()> {
|
|
// Create url.
|
|
let url = format!("https://huggingface.co/{}/resolve/main/{}", model_id, path);
|
|
|
|
// Get cache key.
|
|
let local_cache_key = self.local_cache_key(path);
|
|
|
|
// Create destination path.
|
|
let filepath = ModelDir::new(model_id).path_string(path);
|
|
|
|
// Cache hit.
|
|
let mut local_file_ready = false;
|
|
if !prefer_local_file && local_cache_key.is_some() && fs::metadata(&filepath).is_ok() {
|
|
local_file_ready = true;
|
|
}
|
|
|
|
if !local_file_ready {
|
|
let etag = download_file(&url, &filepath, local_cache_key).await?;
|
|
self.set_local_cache_key(path, &etag).await;
|
|
}
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
pub async fn download_model(model_id: &str, prefer_local_file: bool) -> Result<()> {
|
|
if fs::metadata(model_id).is_ok() {
|
|
// Local path, no need for downloading.
|
|
return Ok(());
|
|
}
|
|
|
|
let mut cache_info = CacheInfo::from(model_id).await;
|
|
|
|
cache_info
|
|
.download(model_id, "tabby.json", prefer_local_file)
|
|
.await?;
|
|
cache_info
|
|
.download(model_id, "tokenizer.json", prefer_local_file)
|
|
.await?;
|
|
cache_info
|
|
.download(model_id, "ctranslate2/config.json", prefer_local_file)
|
|
.await?;
|
|
let _ = cache_info
|
|
.download(model_id, "ctranslate2/vocabulary.txt", prefer_local_file)
|
|
.await;
|
|
let _ = cache_info
|
|
.download(
|
|
model_id,
|
|
"ctranslate2/shared_vocabulary.txt",
|
|
prefer_local_file,
|
|
)
|
|
.await;
|
|
cache_info
|
|
.download(model_id, "ctranslate2/model.bin", prefer_local_file)
|
|
.await?;
|
|
cache_info.save(model_id)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
async fn download_file(url: &str, path: &str, local_cache_key: Option<&str>) -> Result<String> {
|
|
fs::create_dir_all(Path::new(path).parent().unwrap())?;
|
|
|
|
// Reqwest setup
|
|
let res = reqwest::get(url).await?;
|
|
|
|
if !res.status().is_success() {
|
|
return Err(anyhow!(format!("Invalid url: {}", url)));
|
|
}
|
|
|
|
let remote_cache_key = CacheInfo::remote_cache_key(&res)?.to_string();
|
|
if let Some(local_cache_key) = local_cache_key {
|
|
if local_cache_key == remote_cache_key {
|
|
return Ok(remote_cache_key);
|
|
}
|
|
}
|
|
|
|
let total_size = res
|
|
.content_length()
|
|
.ok_or(anyhow!("No content length in headers"))?;
|
|
|
|
// Indicatif setup
|
|
let pb = ProgressBar::new(total_size);
|
|
pb.set_style(ProgressStyle::default_bar()
|
|
.template("{msg}\n{spinner:.green} [{elapsed_precise}] [{wide_bar:.cyan/blue}] {bytes}/{total_bytes} ({bytes_per_sec}, {eta})")?
|
|
.progress_chars("#>-"));
|
|
pb.set_message(format!("Downloading {}", path));
|
|
|
|
// download chunks
|
|
let mut file = fs::File::create(path)?;
|
|
let mut downloaded: u64 = 0;
|
|
let mut stream = res.bytes_stream();
|
|
|
|
while let Some(item) = stream.next().await {
|
|
let chunk = item?;
|
|
file.write_all(&chunk)?;
|
|
let new = cmp::min(downloaded + (chunk.len() as u64), total_size);
|
|
downloaded = new;
|
|
pb.set_position(new);
|
|
}
|
|
|
|
pb.finish_with_message(format!("Downloaded {}", path));
|
|
Ok(remote_cache_key)
|
|
}
|