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extern crate hyper; extern crate tokio_core; extern crate futures; use hyper::Client as HyperClient; use hyper::client::{Connect, HttpConnector}; use hyper::{Result, Response as HyperResponse, Request, Method, Headers, HttpVersion, StatusCode}; use tokio_core::reactor::{Core, Handle}; use futures::Stream; use std::io::Read; use std::cell::RefCell; #[cfg(test)] mod test; macro_rules! method { ($name: ident, $method: ident) => { pub fn $name<S: AsRef<str>>(&self, url: S) -> RequestBuilder<C> { RequestBuilder::new(self, Method::$method, url) } }; } thread_local! { static CORE: RefCell<Core> = RefCell::new(Core::new().unwrap()); static HANDLE: Handle = CORE.with(|c| c.borrow().handle()); } pub struct Client<C> { client: HyperClient<C> } impl Client<HttpConnector> { pub fn new() -> Result<Client<HttpConnector>> { let handle = HANDLE.with(|h| h.clone()); let client = HyperClient::new(&handle); Ok(Client { client: client }) } } impl<C> Client<C> where C: Connect { pub fn create_connector<F: FnOnce(&Core) -> C>(f: F) -> Result<Client<C>> { let connector = CORE.with(|c| f(&*c.borrow())); Ok(Self::with_core_and_connector(connector)) } pub fn with_core_and_connector(connector: C) -> Client<C> { let handle = HANDLE.with(|h| h.clone()); let client = HyperClient::configure() .connector(connector) .build(&handle); Client { client: client } } method!(connect, Connect); method!(delete, Delete); method!(get, Get); method!(head, Head); method!(options, Options); method!(patch, Patch); method!(post, Post); method!(put, Put); method!(trace, Trace); pub fn as_hyper(&self) -> &HyperClient<C> { &self.client } } pub struct RequestBuilder<'a, C: 'a> { client: &'a Client<C>, url: String, method: Method, headers: Headers, body: Option<hyper::Body> } impl<'a, C> RequestBuilder<'a, C> where C: Connect { pub fn new<S: AsRef<str>>(client: &'a Client<C>, method: Method, url: S) -> RequestBuilder<'a, C> { RequestBuilder { client: client, url: url.as_ref().to_string(), method: method, headers: Headers::default(), body: None } } pub fn header<H: hyper::header::Header>(mut self, header: H) -> RequestBuilder<'a, C> { self.headers.set(header); self } pub fn body<B: Into<hyper::Body>>(mut self, body: B) -> RequestBuilder<'a, C> { self.body = Some(body.into()); self } pub fn send(self) -> Result<Response> { let mut request = Request::new(self.method, self.url.parse()?); request.headers_mut().extend(self.headers.iter()); if let Some(body) = self.body { request.set_body(body); } let request_future = self.client.client.request(request); let response = CORE.with(move |c| c.borrow_mut().run(request_future))?; Response::new(response) } } pub struct Response { version: HttpVersion, headers: Headers, status: StatusCode, content: Vec<u8>, pointer: usize } impl Response { pub fn new(response: HyperResponse) -> Result<Self> { let version = response.version(); let headers = response.headers().clone(); let status = response.status(); let collect = response.body().collect(); let chunks = CORE.with(|c| c.borrow_mut().run(collect))?; let bytes = chunks.into_iter().flat_map(|x| x).collect(); Ok(Response { version: version, headers: headers, status: status, content: bytes, pointer: 0 }) } pub fn version(&self) -> HttpVersion { self.version } pub fn headers(&self) -> &Headers { &self.headers } pub fn status(&self) -> StatusCode { self.status } } impl Read for Response { fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> { if self.pointer >= self.content.len() { return Ok(0); } let read = (&self.content[self.pointer..]).read(buf)?; self.pointer += read; Ok(read) } }