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::Entry;
use super::core::GithubCore;
use super::error::parse_error;
use super::lister::GithubLister;
use super::writer::GithubWriter;
use super::writer::GithubWriters;
use crate::raw::*;
use crate::services::github::reader::GithubReader;
use crate::*;
#[derive(Default, Deserialize)]
#[serde(default)]
#[non_exhaustive]
pub struct GithubConfig {
pub root: Option<String>,
pub token: Option<String>,
pub owner: String,
pub repo: String,
}
impl Debug for GithubConfig {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let mut d = f.debug_struct("GithubConfig");
d.field("root", &self.root)
.field("owner", &self.owner)
.field("repo", &self.repo);
d.finish_non_exhaustive()
}
}
#[doc = include_str!("docs.md")]
#[derive(Default)]
pub struct GithubBuilder {
config: GithubConfig,
http_client: Option<HttpClient>,
}
impl Debug for GithubBuilder {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let mut d = f.debug_struct("GithubBuilder");
d.field("config", &self.config);
d.finish_non_exhaustive()
}
}
impl GithubBuilder {
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 = Some(token.to_string());
self
}
pub fn owner(&mut self, owner: &str) -> &mut Self {
self.config.owner = owner.to_string();
self
}
pub fn repo(&mut self, repo: &str) -> &mut Self {
self.config.repo = repo.to_string();
self
}
pub fn http_client(&mut self, client: HttpClient) -> &mut Self {
self.http_client = Some(client);
self
}
}
impl Builder for GithubBuilder {
const SCHEME: Scheme = Scheme::Github;
type Accessor = GithubBackend;
fn from_map(map: HashMap<String, String>) -> Self {
let config = GithubConfig::deserialize(ConfigDeserializer::new(map))
.expect("config deserialize must succeed");
GithubBuilder {
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.owner.is_empty() {
return Err(Error::new(ErrorKind::ConfigInvalid, "owner is empty")
.with_operation("Builder::build")
.with_context("service", Scheme::Github));
}
debug!("backend use owner {}", &self.config.owner);
if self.config.repo.is_empty() {
return Err(Error::new(ErrorKind::ConfigInvalid, "repo is empty")
.with_operation("Builder::build")
.with_context("service", Scheme::Github));
}
debug!("backend use repo {}", &self.config.repo);
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::Github)
})?
};
Ok(GithubBackend {
core: Arc::new(GithubCore {
root,
token: self.config.token.clone(),
owner: self.config.owner.clone(),
repo: self.config.repo.clone(),
client,
}),
})
}
}
#[derive(Debug, Clone)]
pub struct GithubBackend {
core: Arc<GithubCore>,
}
impl Access for GithubBackend {
type Reader = GithubReader;
type Writer = GithubWriters;
type Lister = oio::PageLister<GithubLister>;
type BlockingReader = ();
type BlockingWriter = ();
type BlockingLister = ();
fn info(&self) -> AccessorInfo {
let mut am = AccessorInfo::default();
am.set_scheme(Scheme::Github)
.set_root(&self.core.root)
.set_native_capability(Capability {
stat: true,
read: true,
create_dir: true,
write: true,
write_can_empty: true,
delete: true,
list: true,
list_with_recursive: true,
..Default::default()
});
am
}
async fn create_dir(&self, path: &str, _: OpCreateDir) -> Result<RpCreateDir> {
let empty_bytes = Buffer::new();
let resp = self
.core
.upload(&format!("{}.gitkeep", path), empty_bytes)
.await?;
let status = resp.status();
match status {
StatusCode::OK | StatusCode::CREATED => Ok(RpCreateDir::default()),
_ => Err(parse_error(resp).await?),
}
}
async fn stat(&self, path: &str, _args: OpStat) -> Result<RpStat> {
let resp = self.core.stat(path).await?;
let status = resp.status();
match status {
StatusCode::OK => {
let body = resp.into_body();
let resp: Entry =
serde_json::from_reader(body.reader()).map_err(new_json_deserialize_error)?;
let m = if resp.type_field == "dir" {
Metadata::new(EntryMode::DIR)
} else {
Metadata::new(EntryMode::FILE)
.with_content_length(resp.size)
.with_etag(resp.sha)
};
Ok(RpStat::new(m))
}
_ => Err(parse_error(resp).await?),
}
}
async fn read(&self, path: &str, args: OpRead) -> Result<(RpRead, Self::Reader)> {
Ok((
RpRead::default(),
GithubReader::new(self.core.clone(), path, args),
))
}
async fn write(&self, path: &str, _args: OpWrite) -> Result<(RpWrite, Self::Writer)> {
let writer = GithubWriter::new(self.core.clone(), path.to_string());
let w = oio::OneShotWriter::new(writer);
Ok((RpWrite::default(), w))
}
async fn delete(&self, path: &str, _: OpDelete) -> Result<RpDelete> {
match self.core.delete(path).await {
Ok(_) => Ok(RpDelete::default()),
Err(err) => Err(err),
}
}
async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)> {
let l = GithubLister::new(self.core.clone(), path, args.recursive());
Ok((RpList::default(), oio::PageLister::new(l)))
}
}