use std::collections::HashMap;
use std::fmt::Debug;
use std::fmt::Formatter;
use std::sync::Arc;
use bytes::Buf;
use http::StatusCode;
use log::debug;
use serde::Deserialize;
use super::core::parse_blob;
use super::core::Blob;
use super::core::VercelBlobCore;
use super::error::parse_error;
use super::lister::VercelBlobLister;
use super::writer::VercelBlobWriter;
use super::writer::VercelBlobWriters;
use crate::raw::*;
use crate::services::vercel_blob::reader::VercelBlobReader;
use crate::*;
#[derive(Default, Deserialize)]
#[serde(default)]
#[non_exhaustive]
pub struct VercelBlobConfig {
pub root: Option<String>,
pub token: String,
}
impl Debug for VercelBlobConfig {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let mut ds = f.debug_struct("Config");
ds.field("root", &self.root);
ds.finish()
}
}
#[doc = include_str!("docs.md")]
#[derive(Default)]
pub struct VercelBlobBuilder {
config: VercelBlobConfig,
http_client: Option<HttpClient>,
}
impl Debug for VercelBlobBuilder {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let mut d = f.debug_struct("VercelBlobBuilder");
d.field("config", &self.config);
d.finish_non_exhaustive()
}
}
impl VercelBlobBuilder {
pub fn root(&mut self, root: &str) -> &mut Self {
self.config.root = if root.is_empty() {
None
} else {
Some(root.to_string())
};
self
}
pub fn token(&mut self, token: &str) -> &mut Self {
self.config.token = token.to_string();
self
}
pub fn http_client(&mut self, client: HttpClient) -> &mut Self {
self.http_client = Some(client);
self
}
}
impl Builder for VercelBlobBuilder {
const SCHEME: Scheme = Scheme::VercelBlob;
type Accessor = VercelBlobBackend;
fn from_map(map: HashMap<String, String>) -> Self {
let config = VercelBlobConfig::deserialize(ConfigDeserializer::new(map))
.expect("config deserialize must succeed");
VercelBlobBuilder {
config,
http_client: None,
}
}
fn build(&mut self) -> Result<Self::Accessor> {
debug!("backend build started: {:?}", &self);
let root = normalize_root(&self.config.root.clone().unwrap_or_default());
debug!("backend use root {}", &root);
if self.config.token.is_empty() {
return Err(Error::new(ErrorKind::ConfigInvalid, "token is empty")
.with_operation("Builder::build")
.with_context("service", Scheme::VercelBlob));
}
let client = if let Some(client) = self.http_client.take() {
client
} else {
HttpClient::new().map_err(|err| {
err.with_operation("Builder::build")
.with_context("service", Scheme::VercelBlob)
})?
};
Ok(VercelBlobBackend {
core: Arc::new(VercelBlobCore {
root,
token: self.config.token.clone(),
client,
}),
})
}
}
#[derive(Debug, Clone)]
pub struct VercelBlobBackend {
core: Arc<VercelBlobCore>,
}
impl Access for VercelBlobBackend {
type Reader = VercelBlobReader;
type Writer = VercelBlobWriters;
type Lister = oio::PageLister<VercelBlobLister>;
type BlockingReader = ();
type BlockingWriter = ();
type BlockingLister = ();
fn info(&self) -> AccessorInfo {
let mut am = AccessorInfo::default();
am.set_scheme(Scheme::VercelBlob)
.set_root(&self.core.root)
.set_native_capability(Capability {
stat: true,
read: true,
write: true,
write_can_empty: true,
write_can_multi: true,
write_multi_min_size: Some(5 * 1024 * 1024),
delete: true,
copy: true,
list: true,
list_with_limit: true,
..Default::default()
});
am
}
async fn stat(&self, path: &str, _args: OpStat) -> Result<RpStat> {
let resp = self.core.head(path).await?;
let status = resp.status();
match status {
StatusCode::OK => {
let bs = resp.into_body();
let resp: Blob =
serde_json::from_reader(bs.reader()).map_err(new_json_deserialize_error)?;
parse_blob(&resp).map(RpStat::new)
}
_ => Err(parse_error(resp).await?),
}
}
async fn read(&self, path: &str, args: OpRead) -> Result<(RpRead, Self::Reader)> {
Ok((
RpRead::default(),
VercelBlobReader::new(self.core.clone(), path, args),
))
}
async fn write(&self, path: &str, args: OpWrite) -> Result<(RpWrite, Self::Writer)> {
let concurrent = args.concurrent();
let writer = VercelBlobWriter::new(self.core.clone(), args, path.to_string());
let w = oio::MultipartWriter::new(writer, concurrent);
Ok((RpWrite::default(), w))
}
async fn delete(&self, path: &str, _: OpDelete) -> Result<RpDelete> {
self.core.delete(path).await.map(|_| RpDelete::default())
}
async fn copy(&self, from: &str, to: &str, _args: OpCopy) -> Result<RpCopy> {
let resp = self.core.copy(from, to).await?;
let status = resp.status();
match status {
StatusCode::OK => Ok(RpCopy::default()),
_ => Err(parse_error(resp).await?),
}
}
async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)> {
let l = VercelBlobLister::new(self.core.clone(), path, args.limit());
Ok((RpList::default(), oio::PageLister::new(l)))
}
}