pict-rs/src/main.rs

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Rust
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use actix_form_data::{Field, Form, Value};
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use actix_web::{
guard,
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http::header::{CacheControl, CacheDirective, LastModified, Range, ACCEPT_RANGES},
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web, App, HttpResponse, HttpResponseBuilder, HttpServer,
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};
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use awc::Client;
use futures_util::{
stream::{empty, once},
Stream,
};
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use once_cell::sync::{Lazy, OnceCell};
use std::{
collections::HashSet,
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future::ready,
path::PathBuf,
pin::Pin,
task::{Context, Poll},
time::SystemTime,
};
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use tokio::{io::AsyncReadExt, sync::Semaphore};
use tracing::{debug, error, info, instrument, Span};
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use tracing_actix_web::TracingLogger;
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use tracing_awc::Tracing;
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use tracing_futures::Instrument;
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mod concurrent_processor;
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mod config;
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mod either;
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mod error;
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mod exiftool;
mod ffmpeg;
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mod file;
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mod init_tracing;
mod magick;
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mod map_error;
mod middleware;
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mod migrate;
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mod process;
mod processor;
mod range;
mod serde_str;
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mod store;
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mod tmp_file;
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mod upload_manager;
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mod validate;
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use crate::{magick::details_hint, store::file_store::FileStore};
use self::{
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concurrent_processor::CancelSafeProcessor,
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config::{Config, Format, Migrate},
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either::Either,
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error::{Error, UploadError},
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init_tracing::init_tracing,
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middleware::{Deadline, Internal},
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migrate::LatestDb,
store::Store,
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upload_manager::{Details, UploadManager, UploadManagerSession},
};
const MEGABYTES: usize = 1024 * 1024;
const MINUTES: u32 = 60;
const HOURS: u32 = 60 * MINUTES;
const DAYS: u32 = 24 * HOURS;
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static MIGRATE: OnceCell<Migrate> = OnceCell::new();
static CONFIG: Lazy<Config> = Lazy::new(|| Config::build().unwrap());
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static PROCESS_SEMAPHORE: Lazy<Semaphore> =
Lazy::new(|| Semaphore::new(num_cpus::get().saturating_sub(1).max(1)));
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/// Handle responding to succesful uploads
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#[instrument(name = "Uploaded files", skip(value, manager))]
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async fn upload<S: Store>(
value: Value<UploadManagerSession<S>>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let images = value
.map()
.and_then(|mut m| m.remove("images"))
.and_then(|images| images.array())
.ok_or(UploadError::NoFiles)?;
let mut files = Vec::new();
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let images = images
.into_iter()
.filter_map(|i| i.file())
.collect::<Vec<_>>();
for image in &images {
if let Some(alias) = image.result.alias() {
info!("Uploaded {} as {:?}", image.filename, alias);
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let delete_token = image.result.delete_token().await?;
let name = manager.from_alias(alias.to_owned()).await?;
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let identifier = manager.identifier_from_filename::<S>(name.clone()).await?;
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let details = manager.variant_details(&identifier, name.clone()).await?;
let details = if let Some(details) = details {
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debug!("details exist");
details
} else {
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debug!("generating new details from {:?}", identifier);
let hint = details_hint(&name);
let new_details =
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Details::from_store((**store).clone(), identifier.clone(), hint).await?;
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debug!("storing details for {:?} {}", identifier, name);
manager
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.store_variant_details(&identifier, name, &new_details)
.await?;
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debug!("stored");
new_details
};
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files.push(serde_json::json!({
"file": alias,
"delete_token": delete_token,
"details": details,
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}));
}
}
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for image in images {
image.result.succeed();
}
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Ok(HttpResponse::Created().json(&serde_json::json!({
"msg": "ok",
"files": files
})))
}
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#[derive(Debug, serde::Deserialize)]
struct UrlQuery {
url: String,
}
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pin_project_lite::pin_project! {
struct Limit<S> {
#[pin]
inner: S,
count: u64,
limit: u64,
}
}
impl<S> Limit<S> {
fn new(inner: S, limit: u64) -> Self {
Limit {
inner,
count: 0,
limit,
}
}
}
#[derive(Debug, thiserror::Error)]
#[error("Resonse body larger than size limit")]
struct LimitError;
impl<S, E> Stream for Limit<S>
where
S: Stream<Item = Result<web::Bytes, E>>,
E: From<LimitError>,
{
type Item = Result<web::Bytes, E>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
let this = self.as_mut().project();
let limit = this.limit;
let count = this.count;
let inner = this.inner;
inner.poll_next(cx).map(|opt| {
opt.map(|res| match res {
Ok(bytes) => {
*count += bytes.len() as u64;
if *count > *limit {
return Err(LimitError.into());
}
Ok(bytes)
}
Err(e) => Err(e),
})
})
}
}
/// download an image from a URL
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#[instrument(name = "Downloading file", skip(client, manager))]
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async fn download<S: Store>(
client: web::Data<Client>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
query: web::Query<UrlQuery>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
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let res = client.get(&query.url).send().await?;
if !res.status().is_success() {
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return Err(UploadError::Download(res.status()).into());
}
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let stream = Limit::new(
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map_error::map_crate_error(res),
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(CONFIG.max_file_size() * MEGABYTES) as u64,
);
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futures_util::pin_mut!(stream);
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let permit = PROCESS_SEMAPHORE.acquire().await?;
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let session = manager.session((**store).clone()).upload(stream).await?;
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let alias = session.alias().unwrap().to_owned();
drop(permit);
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let delete_token = session.delete_token().await?;
let name = manager.from_alias(alias.to_owned()).await?;
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let identifier = manager.identifier_from_filename::<S>(name.clone()).await?;
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let details = manager.variant_details(&identifier, name.clone()).await?;
let details = if let Some(details) = details {
details
} else {
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let hint = details_hint(&name);
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let new_details = Details::from_store((**store).clone(), identifier.clone(), hint).await?;
manager
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.store_variant_details(&identifier, name, &new_details)
.await?;
new_details
};
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session.succeed();
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Ok(HttpResponse::Created().json(&serde_json::json!({
"msg": "ok",
"files": [{
"file": alias,
"delete_token": delete_token,
"details": details,
}]
})))
}
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/// Delete aliases and files
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#[instrument(name = "Deleting file", skip(manager))]
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async fn delete<S: Store>(
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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path_entries: web::Path<(String, String)>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
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let (alias, token) = path_entries.into_inner();
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manager.delete((**store).clone(), token, alias).await?;
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Ok(HttpResponse::NoContent().finish())
}
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type ProcessQuery = Vec<(String, String)>;
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async fn prepare_process(
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query: web::Query<ProcessQuery>,
ext: &str,
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manager: &UploadManager,
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filters: &Option<HashSet<String>>,
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) -> Result<(Format, String, PathBuf, Vec<String>), Error> {
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let (alias, operations) =
query
.into_inner()
.into_iter()
.fold((String::new(), Vec::new()), |(s, mut acc), (k, v)| {
if k == "src" {
(v, acc)
} else {
acc.push((k, v));
(s, acc)
}
});
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if alias.is_empty() {
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return Err(UploadError::MissingFilename.into());
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}
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let name = manager.from_alias(alias).await?;
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let operations = if let Some(filters) = filters.as_ref() {
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operations
.into_iter()
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.filter(|(k, _)| filters.contains(&k.to_lowercase()))
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.collect()
} else {
operations
};
let format = ext
.parse::<Format>()
.map_err(|_| UploadError::UnsupportedFormat)?;
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let processed_name = format!("{}.{}", name, ext);
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let (thumbnail_path, thumbnail_args) =
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self::processor::build_chain(&operations, processed_name)?;
Ok((format, name, thumbnail_path, thumbnail_args))
}
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#[instrument(name = "Fetching derived details", skip(manager, filters))]
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async fn process_details<S: Store>(
query: web::Query<ProcessQuery>,
ext: web::Path<String>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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filters: web::Data<Option<HashSet<String>>>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let (_, name, thumbnail_path, _) =
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prepare_process(query, ext.as_str(), &manager, &filters).await?;
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let identifier = manager
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.variant_identifier::<S>(&thumbnail_path, &name)
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.await?
.ok_or(UploadError::MissingAlias)?;
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let details = manager.variant_details(&identifier, name).await?;
let details = details.ok_or(UploadError::NoFiles)?;
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Ok(HttpResponse::Ok().json(&details))
}
/// Process files
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#[instrument(name = "Serving processed image", skip(manager, filters))]
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async fn process<S: Store + 'static>(
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range: Option<web::Header<Range>>,
query: web::Query<ProcessQuery>,
ext: web::Path<String>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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filters: web::Data<Option<HashSet<String>>>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let (format, name, thumbnail_path, thumbnail_args) =
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prepare_process(query, ext.as_str(), &manager, &filters).await?;
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let identifier_opt = manager
.variant_identifier::<S>(&thumbnail_path, &name)
.await?;
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if let Some(identifier) = identifier_opt {
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let details_opt = manager.variant_details(&identifier, name.clone()).await?;
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let details = if let Some(details) = details_opt {
details
} else {
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let hint = details_hint(&name);
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let details = Details::from_store((**store).clone(), identifier.clone(), hint).await?;
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manager
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.store_variant_details(&identifier, name, &details)
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.await?;
details
};
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return ranged_file_resp(&**store, identifier, range, details).await;
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}
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let identifier = manager
.still_identifier_from_filename((**store).clone(), name.clone())
.await?;
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let thumbnail_path2 = thumbnail_path.clone();
let process_fut = async {
let thumbnail_path = thumbnail_path2;
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let permit = PROCESS_SEMAPHORE.acquire().await?;
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let mut processed_reader = crate::magick::process_image_store_read(
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(**store).clone(),
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identifier,
thumbnail_args,
format,
)?;
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let mut vec = Vec::new();
processed_reader.read_to_end(&mut vec).await?;
let bytes = web::Bytes::from(vec);
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drop(permit);
let details = Details::from_bytes(bytes.clone(), format.as_hint()).await?;
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let save_span = tracing::info_span!(
parent: None,
"Saving variant information",
path = tracing::field::debug(&thumbnail_path),
name = tracing::field::display(&name),
);
save_span.follows_from(Span::current());
let details2 = details.clone();
let bytes2 = bytes.clone();
actix_rt::spawn(
async move {
let identifier = match store.save_bytes(bytes2, &name).await {
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Ok(identifier) => identifier,
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Err(e) => {
tracing::warn!("Failed to generate directory path: {}", e);
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return;
}
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};
if let Err(e) = manager
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.store_variant_details(&identifier, name.clone(), &details2)
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.await
{
tracing::warn!("Error saving variant details: {}", e);
return;
}
if let Err(e) = manager
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.store_variant(Some(&thumbnail_path), &identifier, &name)
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.await
{
tracing::warn!("Error saving variant info: {}", e);
}
}
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.instrument(save_span),
);
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Ok((details, bytes)) as Result<(Details, web::Bytes), Error>
};
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let (details, bytes) = CancelSafeProcessor::new(thumbnail_path.clone(), process_fut).await?;
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let (builder, stream) = if let Some(web::Header(range_header)) = range {
if let Some(range) = range::single_bytes_range(&range_header) {
let len = bytes.len() as u64;
if let Some(content_range) = range::to_content_range(range, len) {
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let mut builder = HttpResponse::PartialContent();
builder.insert_header(content_range);
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let stream = range::chop_bytes(range, bytes, len)?;
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(builder, Either::left(Either::left(stream)))
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} else {
(
HttpResponse::RangeNotSatisfiable(),
Either::left(Either::right(empty())),
)
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}
} else {
return Err(UploadError::Range.into());
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}
} else {
(HttpResponse::Ok(), Either::right(once(ready(Ok(bytes)))))
};
Ok(srv_response(
builder,
stream,
details.content_type(),
7 * DAYS,
details.system_time(),
))
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}
/// Fetch file details
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#[instrument(name = "Fetching details", skip(manager))]
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async fn details<S: Store>(
alias: web::Path<String>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let name = manager.from_alias(alias.into_inner()).await?;
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let identifier = manager.identifier_from_filename::<S>(name.clone()).await?;
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let details = manager.variant_details(&identifier, name.clone()).await?;
let details = if let Some(details) = details {
details
} else {
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let hint = details_hint(&name);
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let new_details = Details::from_store((**store).clone(), identifier.clone(), hint).await?;
manager
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.store_variant_details(&identifier, name, &new_details)
.await?;
new_details
};
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Ok(HttpResponse::Ok().json(&details))
}
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/// Serve files
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#[instrument(name = "Serving file", skip(manager))]
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async fn serve<S: Store>(
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range: Option<web::Header<Range>>,
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alias: web::Path<String>,
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manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
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let name = manager.from_alias(alias.into_inner()).await?;
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let identifier = manager.identifier_from_filename::<S>(name.clone()).await?;
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let details = manager.variant_details(&identifier, name.clone()).await?;
let details = if let Some(details) = details {
details
} else {
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let hint = details_hint(&name);
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let details = Details::from_store((**store).clone(), identifier.clone(), hint).await?;
manager
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.store_variant_details(&identifier, name, &details)
.await?;
details
};
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ranged_file_resp(&**store, identifier, range, details).await
}
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async fn ranged_file_resp<S: Store>(
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store: &S,
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identifier: S::Identifier,
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range: Option<web::Header<Range>>,
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details: Details,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
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let (builder, stream) = if let Some(web::Header(range_header)) = range {
//Range header exists - return as ranged
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if let Some(range) = range::single_bytes_range(&range_header) {
let len = store.len(&identifier).await?;
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if let Some(content_range) = range::to_content_range(range, len) {
let mut builder = HttpResponse::PartialContent();
builder.insert_header(content_range);
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(
builder,
Either::left(Either::left(map_error::map_crate_error(
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range::chop_store(range, store, &identifier, len).await?,
))),
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)
} else {
(
HttpResponse::RangeNotSatisfiable(),
Either::left(Either::right(empty())),
)
}
} else {
return Err(UploadError::Range.into());
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}
} else {
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//No Range header in the request - return the entire document
let stream = map_error::map_crate_error(store.to_stream(&identifier, None, None).await?);
(HttpResponse::Ok(), Either::right(stream))
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};
Ok(srv_response(
builder,
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stream,
details.content_type(),
7 * DAYS,
details.system_time(),
))
}
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// A helper method to produce responses with proper cache headers
fn srv_response<S, E>(
mut builder: HttpResponseBuilder,
stream: S,
ext: mime::Mime,
expires: u32,
modified: SystemTime,
) -> HttpResponse
where
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S: Stream<Item = Result<web::Bytes, E>> + 'static,
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E: std::error::Error + 'static,
actix_web::Error: From<E>,
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{
builder
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.insert_header(LastModified(modified.into()))
.insert_header(CacheControl(vec![
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CacheDirective::Public,
CacheDirective::MaxAge(expires),
CacheDirective::Extension("immutable".to_owned(), None),
]))
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.insert_header((ACCEPT_RANGES, "bytes"))
.content_type(ext.to_string())
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.streaming(stream)
}
#[derive(Debug, serde::Deserialize)]
#[serde(untagged)]
enum FileOrAlias {
File { file: String },
Alias { alias: String },
}
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#[instrument(name = "Purging file", skip(upload_manager))]
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async fn purge<S: Store>(
query: web::Query<FileOrAlias>,
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upload_manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let aliases = match query.into_inner() {
FileOrAlias::File { file } => upload_manager.aliases_by_filename(file).await?,
FileOrAlias::Alias { alias } => upload_manager.aliases_by_alias(alias).await?,
};
for alias in aliases.iter() {
upload_manager
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.delete_without_token((**store).clone(), alias.to_owned())
.await?;
}
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Ok(HttpResponse::Ok().json(&serde_json::json!({
"msg": "ok",
"aliases": aliases
})))
}
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#[instrument(name = "Fetching aliases", skip(upload_manager))]
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async fn aliases<S: Store>(
query: web::Query<FileOrAlias>,
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upload_manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let aliases = match query.into_inner() {
FileOrAlias::File { file } => upload_manager.aliases_by_filename(file).await?,
FileOrAlias::Alias { alias } => upload_manager.aliases_by_alias(alias).await?,
};
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Ok(HttpResponse::Ok().json(&serde_json::json!({
"msg": "ok",
"aliases": aliases,
})))
}
#[derive(Debug, serde::Deserialize)]
struct ByAlias {
alias: String,
}
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#[instrument(name = "Fetching filename", skip(upload_manager))]
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async fn filename_by_alias<S: Store>(
query: web::Query<ByAlias>,
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upload_manager: web::Data<UploadManager>,
store: web::Data<S>,
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) -> Result<HttpResponse, Error>
where
Error: From<S::Error>,
{
let filename = upload_manager.from_alias(query.into_inner().alias).await?;
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Ok(HttpResponse::Ok().json(&serde_json::json!({
"msg": "ok",
"filename": filename,
})))
}
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fn transform_error(error: actix_form_data::Error) -> actix_web::Error {
let error: Error = error.into();
let error: actix_web::Error = error.into();
error
}
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fn build_client() -> awc::Client {
Client::builder()
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.wrap(Tracing)
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.add_default_header(("User-Agent", "pict-rs v0.3.0-main"))
.finish()
}
#[cfg(feature = "object-storage")]
fn build_reqwest_client() -> reqwest::Result<reqwest::Client> {
reqwest::Client::builder()
.user_agent("pict-rs v0.3.0-main")
.build()
}
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async fn launch<S: Store + Clone + 'static>(manager: UploadManager, store: S) -> anyhow::Result<()>
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where
S::Error: Unpin,
Error: From<S::Error>,
{
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// Create a new Multipart Form validator
//
// This form is expecting a single array field, 'images' with at most 10 files in it
let manager2 = manager.clone();
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let store2 = store.clone();
let form = Form::new()
.max_files(10)
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.max_file_size(CONFIG.max_file_size() * MEGABYTES)
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.transform_error(transform_error)
.field(
"images",
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Field::array(Field::file(move |filename, _, stream| {
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let store = store2.clone();
let manager = manager2.clone();
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let span = tracing::info_span!("file-upload", ?filename);
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async move {
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let permit = PROCESS_SEMAPHORE.acquire().await?;
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let res = manager
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.session(store)
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.upload(map_error::map_crate_error(stream))
.await;
drop(permit);
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res
}
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.instrument(span)
})),
);
// Create a new Multipart Form validator for internal imports
//
// This form is expecting a single array field, 'images' with at most 10 files in it
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let validate_imports = CONFIG.validate_imports();
let manager2 = manager.clone();
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let store2 = store.clone();
let import_form = Form::new()
.max_files(10)
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.max_file_size(CONFIG.max_file_size() * MEGABYTES)
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.transform_error(transform_error)
.field(
"images",
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Field::array(Field::file(move |filename, _, stream| {
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let store = store2.clone();
let manager = manager2.clone();
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let span = tracing::info_span!("file-import", ?filename);
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async move {
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let permit = PROCESS_SEMAPHORE.acquire().await?;
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let res = manager
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.session(store)
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.import(
filename,
validate_imports,
map_error::map_crate_error(stream),
)
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.await;
drop(permit);
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res
}
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.instrument(span)
})),
);
HttpServer::new(move || {
App::new()
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.wrap(TracingLogger::default())
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.wrap(Deadline)
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.app_data(web::Data::new(store.clone()))
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.app_data(web::Data::new(manager.clone()))
.app_data(web::Data::new(build_client()))
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.app_data(web::Data::new(CONFIG.allowed_filters()))
.service(
web::scope("/image")
.service(
web::resource("")
.guard(guard::Post())
.wrap(form.clone())
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.route(web::post().to(upload::<S>)),
)
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.service(web::resource("/download").route(web::get().to(download::<S>)))
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.service(
web::resource("/delete/{delete_token}/{filename}")
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.route(web::delete().to(delete::<S>))
.route(web::get().to(delete::<S>)),
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)
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.service(web::resource("/original/{filename}").route(web::get().to(serve::<S>)))
.service(web::resource("/process.{ext}").route(web::get().to(process::<S>)))
.service(
web::scope("/details")
.service(
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web::resource("/original/{filename}")
.route(web::get().to(details::<S>)),
)
.service(
web::resource("/process.{ext}")
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.route(web::get().to(process_details::<S>)),
),
),
)
.service(
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web::scope("/internal")
.wrap(Internal(CONFIG.api_key().map(|s| s.to_owned())))
.service(
web::resource("/import")
.wrap(import_form.clone())
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.route(web::post().to(upload::<S>)),
)
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.service(web::resource("/purge").route(web::post().to(purge::<S>)))
.service(web::resource("/aliases").route(web::get().to(aliases::<S>)))
.service(
web::resource("/filename").route(web::get().to(filename_by_alias::<S>)),
),
)
})
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.bind(CONFIG.bind_address())?
.run()
.await?;
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crate::tmp_file::remove_tmp_dir().await?;
Ok(())
}
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async fn migrate_inner<S1>(
manager: &UploadManager,
db: &sled::Db,
from: S1,
to: &config::Store,
) -> anyhow::Result<()>
where
S1: Store,
Error: From<S1::Error>,
{
match to {
config::Store::FileStore { path } => {
let path = path.to_owned().unwrap_or_else(|| CONFIG.data_dir());
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let to = FileStore::build(path, db)?;
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manager.restructure(&to).await?;
manager.migrate_store::<S1, FileStore>(from, to).await?;
}
#[cfg(feature = "object-storage")]
config::Store::S3Store {
bucket_name,
region,
access_key,
secret_key,
security_token,
session_token,
} => {
use store::object_store::ObjectStore;
let to = ObjectStore::build(
bucket_name,
(**region).clone(),
access_key.clone(),
secret_key.clone(),
security_token.clone(),
session_token.clone(),
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db,
build_reqwest_client()?,
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)?;
manager.migrate_store::<S1, ObjectStore>(from, to).await?;
}
}
Ok(())
}
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#[actix_rt::main]
async fn main() -> anyhow::Result<()> {
init_tracing(
"pict-rs",
CONFIG.opentelemetry_url(),
CONFIG.console_buffer_capacity(),
)?;
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let db = LatestDb::exists(CONFIG.data_dir(), CONFIG.sled_cache_capacity()).migrate()?;
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let manager = UploadManager::new(db.clone(), CONFIG.format()).await?;
if let Some(m) = MIGRATE.get() {
let from = m.from();
let to = m.to();
match from {
config::Store::FileStore { path } => {
let path = path.to_owned().unwrap_or_else(|| CONFIG.data_dir());
let from = FileStore::build(path, &db)?;
manager.restructure(&from).await?;
migrate_inner(&manager, &db, from, to).await?;
}
#[cfg(feature = "object-storage")]
config::Store::S3Store {
bucket_name,
region,
access_key,
secret_key,
security_token,
session_token,
} => {
let from = crate::store::object_store::ObjectStore::build(
bucket_name,
(**region).clone(),
access_key.clone(),
secret_key.clone(),
security_token.clone(),
session_token.clone(),
&db,
build_reqwest_client()?,
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)?;
migrate_inner(&manager, &db, from, to).await?;
}
}
return Ok(());
}
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match CONFIG.store() {
config::Store::FileStore { path } => {
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let path = path.to_owned().unwrap_or_else(|| CONFIG.data_dir());
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let store = FileStore::build(path.clone(), &db)?;
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manager.restructure(&store).await?;
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launch(manager, store).await
}
#[cfg(feature = "object-storage")]
config::Store::S3Store {
bucket_name,
region,
access_key,
secret_key,
security_token,
session_token,
} => {
let store = crate::store::object_store::ObjectStore::build(
bucket_name,
(**region).clone(),
access_key.clone(),
secret_key.clone(),
security_token.clone(),
session_token.clone(),
&db,
build_reqwest_client()?,
)?;
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launch(manager, store).await
}
}
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}