use std::collections::HashMap;
use std::fmt::Debug;
use std::sync::Arc;
use http::StatusCode;
use http::Uri;
use log::debug;
use reqsign::HuaweicloudObsConfig;
use reqsign::HuaweicloudObsCredentialLoader;
use reqsign::HuaweicloudObsSigner;
use super::core::ObsCore;
use super::error::parse_error;
use super::lister::ObsLister;
use super::writer::ObsWriter;
use crate::raw::*;
use crate::services::obs::reader::ObsReader;
use crate::services::obs::writer::ObsWriters;
use crate::*;
#[doc = include_str!("docs.md")]
#[derive(Default, Clone)]
pub struct ObsBuilder {
root: Option<String>,
endpoint: Option<String>,
access_key_id: Option<String>,
secret_access_key: Option<String>,
bucket: Option<String>,
http_client: Option<HttpClient>,
}
impl Debug for ObsBuilder {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Builder")
.field("root", &self.root)
.field("endpoint", &self.endpoint)
.field("access_key_id", &"<redacted>")
.field("secret_access_key", &"<redacted>")
.field("bucket", &self.bucket)
.finish()
}
}
impl ObsBuilder {
pub fn root(&mut self, root: &str) -> &mut Self {
if !root.is_empty() {
self.root = Some(root.to_string())
}
self
}
pub fn endpoint(&mut self, endpoint: &str) -> &mut Self {
if !endpoint.is_empty() {
self.endpoint = Some(endpoint.trim_end_matches('/').to_string());
}
self
}
pub fn access_key_id(&mut self, access_key_id: &str) -> &mut Self {
if !access_key_id.is_empty() {
self.access_key_id = Some(access_key_id.to_string());
}
self
}
pub fn secret_access_key(&mut self, secret_access_key: &str) -> &mut Self {
if !secret_access_key.is_empty() {
self.secret_access_key = Some(secret_access_key.to_string());
}
self
}
pub fn bucket(&mut self, bucket: &str) -> &mut Self {
if !bucket.is_empty() {
self.bucket = Some(bucket.to_string());
}
self
}
pub fn http_client(&mut self, client: HttpClient) -> &mut Self {
self.http_client = Some(client);
self
}
}
impl Builder for ObsBuilder {
const SCHEME: Scheme = Scheme::Obs;
type Accessor = ObsBackend;
fn from_map(map: HashMap<String, String>) -> Self {
let mut builder = ObsBuilder::default();
map.get("root").map(|v| builder.root(v));
map.get("bucket").map(|v| builder.bucket(v));
map.get("endpoint").map(|v| builder.endpoint(v));
map.get("access_key_id").map(|v| builder.access_key_id(v));
map.get("secret_access_key")
.map(|v| builder.secret_access_key(v));
builder
}
fn build(&mut self) -> Result<Self::Accessor> {
debug!("backend build started: {:?}", &self);
let root = normalize_root(&self.root.take().unwrap_or_default());
debug!("backend use root {}", root);
let bucket = match &self.bucket {
Some(bucket) => Ok(bucket.to_string()),
None => Err(
Error::new(ErrorKind::ConfigInvalid, "The bucket is misconfigured")
.with_context("service", Scheme::Obs),
),
}?;
debug!("backend use bucket {}", &bucket);
let uri = match &self.endpoint {
Some(endpoint) => endpoint.parse::<Uri>().map_err(|err| {
Error::new(ErrorKind::ConfigInvalid, "endpoint is invalid")
.with_context("service", Scheme::Obs)
.set_source(err)
}),
None => Err(Error::new(ErrorKind::ConfigInvalid, "endpoint is empty")
.with_context("service", Scheme::Obs)),
}?;
let scheme = match uri.scheme_str() {
Some(scheme) => scheme.to_string(),
None => "https".to_string(),
};
let (endpoint, is_obs_default) = {
let host = uri.host().unwrap_or_default().to_string();
if host.starts_with("obs.") && host.ends_with(".myhuaweicloud.com") {
(format!("{bucket}.{host}"), true)
} else {
(host, false)
}
};
debug!("backend use endpoint {}", &endpoint);
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::Obs)
})?
};
let mut cfg = HuaweicloudObsConfig::default();
cfg = cfg.from_env();
if let Some(v) = self.access_key_id.take() {
cfg.access_key_id = Some(v);
}
if let Some(v) = self.secret_access_key.take() {
cfg.secret_access_key = Some(v);
}
let loader = HuaweicloudObsCredentialLoader::new(cfg);
let signer = HuaweicloudObsSigner::new({
if is_obs_default {
&bucket
} else {
&endpoint
}
});
debug!("backend build finished");
Ok(ObsBackend {
core: Arc::new(ObsCore {
bucket,
root,
endpoint: format!("{}://{}", &scheme, &endpoint),
signer,
loader,
client,
}),
})
}
}
#[derive(Debug, Clone)]
pub struct ObsBackend {
core: Arc<ObsCore>,
}
impl Access for ObsBackend {
type Reader = ObsReader;
type Writer = ObsWriters;
type Lister = oio::PageLister<ObsLister>;
type BlockingReader = ();
type BlockingWriter = ();
type BlockingLister = ();
fn info(&self) -> AccessorInfo {
let mut am = AccessorInfo::default();
am.set_scheme(Scheme::Obs)
.set_root(&self.core.root)
.set_name(&self.core.bucket)
.set_native_capability(Capability {
stat: true,
stat_with_if_match: true,
stat_with_if_none_match: true,
read: true,
read_with_if_match: true,
read_with_if_none_match: true,
write: true,
write_can_empty: true,
write_can_append: true,
write_can_multi: true,
write_with_content_type: true,
write_with_cache_control: true,
write_multi_min_size: Some(5 * 1024 * 1024),
write_multi_max_size: if cfg!(target_pointer_width = "64") {
Some(5 * 1024 * 1024 * 1024)
} else {
Some(usize::MAX)
},
delete: true,
copy: true,
list: true,
list_with_recursive: true,
presign: true,
presign_stat: true,
presign_read: true,
presign_write: true,
..Default::default()
});
am
}
async fn stat(&self, path: &str, args: OpStat) -> Result<RpStat> {
let resp = self.core.obs_head_object(path, &args).await?;
let status = resp.status();
match status {
StatusCode::OK => parse_into_metadata(path, resp.headers()).map(RpStat::new),
StatusCode::NOT_FOUND if path.ends_with('/') => {
Ok(RpStat::new(Metadata::new(EntryMode::DIR)))
}
_ => Err(parse_error(resp).await?),
}
}
async fn read(&self, path: &str, args: OpRead) -> Result<(RpRead, Self::Reader)> {
Ok((
RpRead::default(),
ObsReader::new(self.core.clone(), path, args),
))
}
async fn write(&self, path: &str, args: OpWrite) -> Result<(RpWrite, Self::Writer)> {
let writer = ObsWriter::new(self.core.clone(), path, args.clone());
let w = if args.append() {
ObsWriters::Two(oio::AppendWriter::new(writer))
} else {
ObsWriters::One(oio::MultipartWriter::new(writer, args.concurrent()))
};
Ok((RpWrite::default(), w))
}
async fn delete(&self, path: &str, _: OpDelete) -> Result<RpDelete> {
let resp = self.core.obs_delete_object(path).await?;
let status = resp.status();
match status {
StatusCode::NO_CONTENT | StatusCode::ACCEPTED | StatusCode::NOT_FOUND => {
Ok(RpDelete::default())
}
_ => Err(parse_error(resp).await?),
}
}
async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)> {
let l = ObsLister::new(self.core.clone(), path, args.recursive(), args.limit());
Ok((RpList::default(), oio::PageLister::new(l)))
}
async fn copy(&self, from: &str, to: &str, _args: OpCopy) -> Result<RpCopy> {
let resp = self.core.obs_copy_object(from, to).await?;
let status = resp.status();
match status {
StatusCode::OK => Ok(RpCopy::default()),
_ => Err(parse_error(resp).await?),
}
}
async fn presign(&self, path: &str, args: OpPresign) -> Result<RpPresign> {
let mut req = match args.operation() {
PresignOperation::Stat(v) => self.core.obs_head_object_request(path, v)?,
PresignOperation::Read(v) => {
self.core
.obs_get_object_request(path, BytesRange::default(), v)?
}
PresignOperation::Write(v) => {
self.core
.obs_put_object_request(path, None, v, Buffer::new())?
}
};
self.core.sign_query(&mut req, args.expire()).await?;
let (parts, _) = req.into_parts();
Ok(RpPresign::new(PresignedRequest::new(
parts.method,
parts.uri,
parts.headers,
)))
}
}