258 lines
13 KiB
Rust
258 lines
13 KiB
Rust
use actix_web::error::ErrorNotFound;
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use actix_web::{error::ErrorInternalServerError, web, HttpRequest, HttpResponse, Result};
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use log::{error, warn};
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use crate::app_state::AppState;
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use crate::handlers::serve_file::serve_file;
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use crate::s3_utils::{check_file_exists, load_file_from_s3, upload_to_s3};
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use crate::thumbnail::{find_closest_width, parse_file_path, thumbdata_save};
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use crate::lookup::{find_file_by_pattern, get_mime_type};
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/// Обработчик для скачивания файла и генерации миниатюры, если она недоступна.
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pub async fn proxy_handler(
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req: HttpRequest,
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requested_res: web::Path<String>,
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state: web::Data<AppState>,
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) -> Result<HttpResponse, actix_web::Error> {
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warn!("\t>>>\tGET {} [START]", requested_res);
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let normalized_path = if requested_res.ends_with("/webp") {
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warn!("Removing /webp suffix from path");
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requested_res.replace("/webp", "")
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} else {
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requested_res.to_string()
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};
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// парсим GET запрос
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let (base_filename, requested_width, extension) = parse_file_path(&normalized_path);
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warn!("detected file extension: {}", extension);
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warn!("base_filename: {}", base_filename);
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warn!("requested width: {}", requested_width);
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let ext = extension.as_str().to_lowercase();
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warn!("normalized to lowercase: {}", ext);
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let filekey = format!("{}.{}", base_filename, &ext);
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warn!("filekey: {}", filekey);
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let content_type = match get_mime_type(&ext) {
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Some(mime) => mime.to_string(),
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None => {
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let mut redis = state.redis.clone();
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match find_file_by_pattern(&mut redis, &base_filename).await {
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Ok(Some(found_file)) => {
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if let Some(found_ext) = found_file.split('.').last() {
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get_mime_type(found_ext)
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.unwrap_or("application/octet-stream")
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.to_string()
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} else {
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"application/octet-stream".to_string()
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}
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}
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_ => {
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error!("unsupported file format");
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return Err(ErrorInternalServerError("unsupported file format"));
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}
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}
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}
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};
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warn!("content_type: {}", content_type);
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let shout_id = match req.query_string().contains("s=") {
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true => req.query_string().split("s=").collect::<Vec<&str>>().pop().unwrap_or(""),
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false => ""
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};
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return match state.get_path(&filekey).await {
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Ok(Some(stored_path)) => {
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warn!("Found stored path in DB: {}", stored_path);
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warn!("Checking Storj path - bucket: {}, path: {}", state.bucket, stored_path);
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if check_file_exists(&state.storj_client, &state.bucket, &stored_path).await? {
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warn!("File exists in Storj: {}", stored_path);
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if content_type.starts_with("image") {
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warn!("Processing image file with width: {}", requested_width);
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if requested_width == 0 {
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warn!("Serving original file without resizing");
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serve_file(&stored_path, &state, shout_id).await
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} else {
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let closest: u32 = find_closest_width(requested_width as u32);
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warn!("Calculated closest width: {} for requested: {}", closest, requested_width);
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let thumb_filename = &format!("{}_{}.{}", base_filename, closest, ext);
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warn!("Generated thumbnail filename: {}", thumb_filename);
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// Проверяем, существует ли уже миниатюра в Storj
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match check_file_exists(&state.storj_client, &state.bucket, thumb_filename).await {
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Ok(true) => {
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warn!("serve existed thumb file: {}", thumb_filename);
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serve_file(thumb_filename, &state, shout_id).await
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},
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Ok(false) => {
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// Миниатюра не существует, возвращаем оригинал и запускаем генерацию миниатюры
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let original_file = serve_file(&stored_path, &state, shout_id).await?;
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// Запускаем асинхронную задачу для генерации миниатюры
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let state_clone = state.clone();
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let stored_path_clone = stored_path.clone();
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let filekey_clone = filekey.clone();
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let content_type_clone = content_type.to_string();
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actix_web::rt::spawn(async move {
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if let Ok(filedata) = load_file_from_s3(&state_clone.storj_client, &state_clone.bucket, &stored_path_clone).await {
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warn!("generate new thumb files: {}", stored_path_clone);
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if let Err(e) = thumbdata_save(filedata, &state_clone, &filekey_clone, content_type_clone).await {
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error!("Failed to generate thumbnail: {}", e);
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}
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}
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});
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Ok(original_file)
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}
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Err(e) => {
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error!("ошибка при проверке существования миниатюры: {}", e);
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Err(ErrorInternalServerError("failed to load thumbnail"))
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}
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}
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}
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} else {
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warn!("File is not an image, proceeding with normal serving");
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serve_file(&stored_path, &state, shout_id).await
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}
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} else {
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warn!("Attempting to load from AWS - bucket: {}, path: {}", state.bucket, stored_path);
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// Определяем тип медиа из content_type
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let media_type = content_type.split("/").next().unwrap_or("image");
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// Создаем варианты путей с обоими регистрами расширения
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let paths_lower = vec![
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stored_path.clone(),
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// format!("production/{}", stored_path),
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format!("production/{}/{}", media_type, stored_path)
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];
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// Создаем те же пути, но с оригинальным регистром расширения
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let orig_ext = extension.as_str(); // оригинальное расширение
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let orig_stored_path = format!("{}.{}", base_filename, orig_ext);
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let paths_orig = vec![
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orig_stored_path.clone(),
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// format!("production/{}", orig_stored_path),
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format!("production/{}/{}", media_type, orig_stored_path)
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];
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// Объединяем все пути для проверки
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let all_paths = paths_lower.into_iter().chain(paths_orig.into_iter());
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for path in all_paths {
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warn!("Trying AWS path: {}", path);
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match load_file_from_s3(&state.aws_client, &state.bucket, &path).await {
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Ok(filedata) => {
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warn!("Successfully loaded file from AWS, size: {} bytes", filedata.len());
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warn!("Attempting to upload to Storj with key: {}", filekey);
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if let Err(e) = upload_to_s3(
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&state.storj_client,
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&state.bucket,
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&filekey,
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filedata.clone(),
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&content_type,
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).await {
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error!("Failed to upload to Storj: {} - Error: {}", filekey, e);
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} else {
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warn!("Successfully uploaded to Storj: {}", filekey);
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}
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return Ok(HttpResponse::Ok().content_type(content_type).body(filedata));
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}
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Err(err) => {
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warn!("Failed to load from AWS path {}: {:?}", path, err);
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continue;
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}
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}
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}
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error!("Failed to load from any AWS path for: {}", stored_path);
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Err(ErrorInternalServerError("Failed to load file from AWS"))
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}
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}
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Ok(None) => {
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warn!("No stored path found in DB for: {}", filekey);
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let ct_parts = content_type.split("/").collect::<Vec<&str>>();
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// Создаем два варианта пути - с оригинальным расширением и с нижним регистром
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let filepath_lower = format!("production/{}/{}.{}", ct_parts[0], base_filename, ext);
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let filepath_orig = format!("production/{}/{}.{}", ct_parts[0], base_filename, extension);
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warn!("Looking up files with paths: {} or {} in bucket: {}",
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filepath_lower, filepath_orig, state.bucket);
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// Проверяем существование файла с обоими вариантами расширения
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let exists_in_aws_lower = check_file_exists(&state.aws_client, &state.bucket, &filepath_lower).await?;
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let exists_in_aws_orig = check_file_exists(&state.aws_client, &state.bucket, &filepath_orig).await?;
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let filepath = if exists_in_aws_orig {
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filepath_orig
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} else if exists_in_aws_lower {
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filepath_lower
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} else {
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// Если файл не найден ни с одним из расширений, используем нижний регистр по умолчанию
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filepath_lower
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};
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let exists_in_storj = check_file_exists(&state.storj_client, &state.bucket, &filepath).await?;
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warn!("Checking existence in Storj: {}", exists_in_storj);
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if exists_in_storj {
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warn!("file {} exists in storj, try to generate thumbnails", filepath);
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match load_file_from_s3(&state.aws_client, &state.bucket, &filepath).await {
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Ok(filedata) => {
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let _ = thumbdata_save(filedata.clone(), &state, &filekey, content_type.to_string()).await;
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}
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Err(e) => {
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error!("cannot download {} from storj: {}", filekey, e);
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return Err(ErrorInternalServerError(e));
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}
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}
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} else {
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warn!("file {} does not exist in storj", filepath);
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}
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let exists_in_aws = check_file_exists(&state.aws_client, &state.bucket, &filepath).await?;
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warn!("Checking existence in AWS: {}", exists_in_aws);
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if exists_in_aws {
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warn!("File found in AWS, attempting to download: {}", filepath);
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match load_file_from_s3(&state.aws_client, &state.bucket, &filepath).await {
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Ok(filedata) => {
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warn!("Successfully downloaded file from AWS, size: {} bytes", filedata.len());
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let _ = thumbdata_save(filedata.clone(), &state, &filekey, content_type.to_string())
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.await;
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if let Err(e) = upload_to_s3(
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&state.storj_client,
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&state.bucket,
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&filekey,
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filedata.clone(),
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&content_type,
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)
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.await {
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warn!("cannot upload to storj: {}", e);
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} else {
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warn!("file {} uploaded to storj", filekey);
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state.set_path(&filekey, &filepath).await;
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}
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Ok(HttpResponse::Ok().content_type(content_type).body(filedata))
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},
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Err(e) => {
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error!("Failed to download from AWS: {} - Error: {}", filepath, e);
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Err(ErrorInternalServerError(e))
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},
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}
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} else {
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error!("File not found in either Storj or AWS: {}", filepath);
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Err(ErrorNotFound("file does not exist"))
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}
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},
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Err(e) => {
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error!("Database error while getting path: {} - Full error: {:?}", filekey, e);
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Err(ErrorInternalServerError(e))
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}
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}
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}
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