move server code to api_server.rs, implement Service and NewService
This commit is contained in:
Dietmar Maurer
parent
08bd8d476a
commit
9bc17e8dcd
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@ -1,20 +1,39 @@
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use std::collections::HashMap;
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use std::path::{PathBuf};
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use std::sync::Arc;
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use failure::*;
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use serde_json::{json, Value};
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use crate::json_schema::*;
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use crate::api_info::*;
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//use crate::json_schema::*;
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use hyper::{Method};
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pub struct ApiServer {
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use futures::future::{self, Either};
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//use tokio::prelude::*;
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//use tokio::timer::Delay;
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use tokio::fs::File;
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use tokio_codec;
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//use bytes::{BytesMut, BufMut};
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//use hyper::body::Payload;
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use hyper::http::request::Parts;
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use hyper::{Body, Request, Method, Response, StatusCode};
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use hyper::service::{Service, NewService};
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use hyper::rt::{Future, Stream};
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use hyper::header;
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pub struct ApiConfig {
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basedir: PathBuf,
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router: &'static MethodInfo,
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aliases: HashMap<String, PathBuf>,
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}
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impl ApiServer {
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impl ApiConfig {
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pub fn new<B: Into<PathBuf>>(basedir: B, router: &'static MethodInfo) -> Self {
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ApiServer {
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Self {
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basedir: basedir.into(),
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router: router,
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aliases: HashMap::new(),
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@ -61,3 +80,264 @@ impl ApiServer {
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self.aliases.insert(alias.into(), path.into());
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}
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}
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type BoxFut = Box<Future<Item = Response<Body>, Error = failure::Error> + Send>;
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macro_rules! error_response {
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($status:ident, $msg:expr) => {{
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let mut resp = Response::new(Body::from($msg));
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*resp.status_mut() = StatusCode::$status;
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resp
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}}
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}
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macro_rules! http_error_future {
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($status:ident, $msg:expr) => {{
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let resp = error_response!($status, $msg);
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return Box::new(future::ok(resp));
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}}
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}
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fn get_request_parameters_async<'a>(
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info: &'a ApiMethod,
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parts: Parts,
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req_body: Body,
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) -> Box<Future<Item = Value, Error = failure::Error> + Send + 'a>
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{
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let resp = req_body
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("Promlems reading request body: {}", err))))
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.fold(Vec::new(), |mut acc, chunk| {
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if acc.len() + chunk.len() < 64*1024 { //fimxe: max request body size?
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acc.extend_from_slice(&*chunk);
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Ok(acc)
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}
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else { Err(Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("Request body too large")))) }
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})
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.and_then(move |body| {
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let bytes = String::from_utf8(body.to_vec())?; // why copy??
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println!("GOT BODY {:?}", bytes);
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let mut test_required = true;
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let mut params = json!({});
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if bytes.len() > 0 {
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params = parse_query_string(&bytes, &info.parameters, true)?;
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test_required = false;
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}
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if let Some(query_str) = parts.uri.query() {
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let query_params = parse_query_string(query_str, &info.parameters, test_required)?;
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for (k, v) in query_params.as_object().unwrap() {
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params[k] = v.clone(); // fixme: why clone()??
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}
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}
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println!("GOT PARAMS {}", params);
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Ok(params)
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});
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Box::new(resp)
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}
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fn handle_sync_api_request<'a>(
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info: &'a ApiMethod,
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parts: Parts,
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req_body: Body,
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) -> Box<Future<Item = Response<Body>, Error = failure::Error> + Send + 'a>
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{
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let params = get_request_parameters_async(info, parts, req_body);
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let resp = params
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.and_then(move |params| {
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println!("GOT PARAMS {}", params);
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/*
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let when = Instant::now() + Duration::from_millis(3000);
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let task = Delay::new(when).then(|_| {
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println!("A LAZY TASK");
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ok(())
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});
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tokio::spawn(task);
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*/
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let res = (info.handler)(params, info)?;
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Ok(res)
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}).then(|result| {
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match result {
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Ok(ref value) => {
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let json_str = value.to_string();
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Ok(Response::builder()
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.status(StatusCode::OK)
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.header(header::CONTENT_TYPE, "application/json")
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.body(Body::from(json_str))?)
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}
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Err(err) => Ok(error_response!(BAD_REQUEST, err.to_string()))
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}
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});
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Box::new(resp)
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}
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fn simple_static_file_download(filename: PathBuf) -> BoxFut {
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Box::new(File::open(filename)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File open failed: {}", err))))
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.and_then(|file| {
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let buf: Vec<u8> = Vec::new();
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tokio::io::read_to_end(file, buf)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File read failed: {}", err))))
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.and_then(|data| Ok(Response::new(data.1.into())))
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}))
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}
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fn chuncked_static_file_download(filename: PathBuf) -> BoxFut {
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Box::new(File::open(filename)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File open failed: {}", err))))
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.and_then(|file| {
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let payload = tokio_codec::FramedRead::new(file, tokio_codec::BytesCodec::new()).
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map(|bytes| {
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//sigh - howto avoid copy here? or the whole map() ??
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hyper::Chunk::from(bytes.to_vec())
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});
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let body = Body::wrap_stream(payload);
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// fixme: set content type and other headers
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Ok(Response::builder()
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.status(StatusCode::OK)
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.body(body)
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.unwrap())
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}))
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}
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fn handle_static_file_download(filename: PathBuf) -> BoxFut {
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let response = tokio::fs::metadata(filename.clone())
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File access problems: {}", err))))
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.and_then(|metadata| {
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if metadata.len() < 1024*32 {
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Either::A(simple_static_file_download(filename))
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} else {
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Either::B(chuncked_static_file_download(filename))
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}
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});
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return Box::new(response);
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}
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pub fn handle_request(api: Arc<ApiConfig>, req: Request<Body>) -> BoxFut {
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let (parts, body) = req.into_parts();
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let method = parts.method.clone();
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let path = parts.uri.path();
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// normalize path
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// do not allow ".", "..", or hidden files ".XXXX"
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// also remove empty path components
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let items = path.split('/');
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let mut path = String::new();
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let mut components = vec![];
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for name in items {
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if name.is_empty() { continue; }
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if name.starts_with(".") {
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http_error_future!(BAD_REQUEST, "Path contains illegal components.\n");
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}
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path.push('/');
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path.push_str(name);
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components.push(name);
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}
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let comp_len = components.len();
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println!("REQUEST {} {}", method, path);
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println!("COMPO {:?}", components);
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if comp_len >= 1 && components[0] == "api3" {
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println!("GOT API REQUEST");
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if comp_len >= 2 {
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let format = components[1];
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if format != "json" {
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http_error_future!(BAD_REQUEST, format!("Unsupported output format '{}'.", format))
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}
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if let Some(api_method) = api.find_method(&components[2..], method) {
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// fixme: handle auth
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return handle_sync_api_request(api_method, parts, body);
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}
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}
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} else {
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// not Auth for accessing files!
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let filename = api.find_alias(&components);
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return handle_static_file_download(filename);
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}
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http_error_future!(NOT_FOUND, "Path not found.")
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//Box::new(ok(Response::new(Body::from("RETURN WEB GUI\n"))))
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}
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pub struct RestServer {
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pub api_config: Arc<ApiConfig>,
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}
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impl RestServer {
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pub fn new(api_config: ApiConfig) -> Self {
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Self { api_config: Arc::new(api_config) }
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}
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}
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impl NewService for RestServer
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{
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type ReqBody = Body;
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type ResBody = Body;
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type Error = hyper::Error;
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type InitError = hyper::Error;
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type Service = ApiService;
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type Future = Box<Future<Item = Self::Service, Error = Self::InitError> + Send>;
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fn new_service(&self) -> Self::Future {
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Box::new(future::ok(ApiService { api_config: self.api_config.clone() }))
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}
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}
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pub struct ApiService {
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pub api_config: Arc<ApiConfig>,
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}
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impl Service for ApiService {
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type ReqBody = Body;
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type ResBody = Body;
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type Error = hyper::Error;
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type Future = Box<Future<Item = Response<Body>, Error = Self::Error> + Send>;
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fn call(&mut self, req: Request<Self::ReqBody>) -> Self::Future {
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Box::new(handle_request(self.api_config.clone(), req).then(|result| {
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match result {
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Ok(res) => Ok::<_, hyper::Error>(res),
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Err(err) => {
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if let Some(apierr) = err.downcast_ref::<ApiError>() {
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let mut resp = Response::new(Body::from(apierr.message.clone()));
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*resp.status_mut() = apierr.code;
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Ok(resp)
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} else {
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let mut resp = Response::new(Body::from(err.to_string()));
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*resp.status_mut() = StatusCode::BAD_REQUEST;
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Ok(resp)
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}
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}
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}
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}))
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}
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}
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278
src/main.rs
278
src/main.rs
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@ -1,245 +1,13 @@
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extern crate apitest;
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use failure::*;
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use std::sync::Arc;
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//use std::collections::HashMap;
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//use std::io;
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//use std::fs;
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use std::path::{PathBuf};
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//use std::collections::HashMap;
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//use failure::*;
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use lazy_static::lazy_static;
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//use apitest::json_schema::*;
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use apitest::api_info::*;
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use apitest::json_schema::*;
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use apitest::api_server::*;
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//use serde_derive::{Serialize, Deserialize};
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use serde_json::{json, Value};
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use futures::future::Future;
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use futures::future::{self, Either};
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//use tokio::prelude::*;
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//use tokio::timer::Delay;
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use tokio::fs::File;
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use tokio_codec;
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//use bytes::{BytesMut, BufMut};
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//use hyper::body::Payload;
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use hyper::http::request::Parts;
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use hyper::{Body, Request, Response, Server, StatusCode};
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use hyper::rt::{Future, Stream};
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use hyper::service::service_fn;
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use hyper::header;
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//use std::time::{Duration, Instant};
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type BoxFut = Box<Future<Item = Response<Body>, Error = failure::Error> + Send>;
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macro_rules! error_response {
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($status:ident, $msg:expr) => {{
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let mut resp = Response::new(Body::from($msg));
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*resp.status_mut() = StatusCode::$status;
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resp
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}}
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}
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macro_rules! http_error_future {
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($status:ident, $msg:expr) => {{
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let resp = error_response!($status, $msg);
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return Box::new(future::ok(resp));
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}}
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}
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fn get_request_parameters_async<'a>(
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info: &'a ApiMethod,
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parts: Parts,
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req_body: Body,
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) -> Box<Future<Item = Value, Error = failure::Error> + Send + 'a>
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{
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let resp = req_body
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("Promlems reading request body: {}", err))))
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.fold(Vec::new(), |mut acc, chunk| {
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if acc.len() + chunk.len() < 64*1024 { //fimxe: max request body size?
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acc.extend_from_slice(&*chunk);
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Ok(acc)
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}
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else { Err(Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("Request body too large")))) }
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})
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.and_then(move |body| {
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let bytes = String::from_utf8(body.to_vec())?; // why copy??
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println!("GOT BODY {:?}", bytes);
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let mut test_required = true;
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let mut params = json!({});
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if bytes.len() > 0 {
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params = parse_query_string(&bytes, &info.parameters, true)?;
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test_required = false;
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}
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if let Some(query_str) = parts.uri.query() {
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let query_params = parse_query_string(query_str, &info.parameters, test_required)?;
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for (k, v) in query_params.as_object().unwrap() {
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params[k] = v.clone(); // fixme: why clone()??
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}
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}
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println!("GOT PARAMS {}", params);
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Ok(params)
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});
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Box::new(resp)
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}
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fn handle_sync_api_request<'a>(
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info: &'a ApiMethod,
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parts: Parts,
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req_body: Body,
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) -> Box<Future<Item = Response<Body>, Error = failure::Error> + Send + 'a>
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{
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let params = get_request_parameters_async(info, parts, req_body);
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let resp = params
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.and_then(move |params| {
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println!("GOT PARAMS {}", params);
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/*
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let when = Instant::now() + Duration::from_millis(3000);
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let task = Delay::new(when).then(|_| {
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println!("A LAZY TASK");
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ok(())
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});
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tokio::spawn(task);
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*/
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let res = (info.handler)(params, info)?;
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Ok(res)
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}).then(|result| {
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match result {
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Ok(ref value) => {
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let json_str = value.to_string();
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Ok(Response::builder()
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.status(StatusCode::OK)
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.header(header::CONTENT_TYPE, "application/json")
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.body(Body::from(json_str))?)
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}
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Err(err) => Ok(error_response!(BAD_REQUEST, err.to_string()))
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}
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});
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Box::new(resp)
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}
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fn simple_static_file_download(filename: PathBuf) -> BoxFut {
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Box::new(File::open(filename)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File open failed: {}", err))))
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.and_then(|file| {
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let buf: Vec<u8> = Vec::new();
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tokio::io::read_to_end(file, buf)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File read failed: {}", err))))
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.and_then(|data| Ok(Response::new(data.1.into())))
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}))
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}
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fn chuncked_static_file_download(filename: PathBuf) -> BoxFut {
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Box::new(File::open(filename)
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File open failed: {}", err))))
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.and_then(|file| {
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let payload = tokio_codec::FramedRead::new(file, tokio_codec::BytesCodec::new()).
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map(|bytes| {
|
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//sigh - howto avoid copy here? or the whole map() ??
|
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hyper::Chunk::from(bytes.to_vec())
|
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});
|
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let body = Body::wrap_stream(payload);
|
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// fixme: set content type and other headers
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Ok(Response::builder()
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.status(StatusCode::OK)
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.body(body)
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.unwrap())
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}))
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}
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fn handle_static_file_download(filename: PathBuf) -> BoxFut {
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let response = tokio::fs::metadata(filename.clone())
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.map_err(|err| Error::from(ApiError::new(StatusCode::BAD_REQUEST, format!("File access problems: {}", err))))
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.and_then(|metadata| {
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if metadata.len() < 1024*32 {
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Either::A(simple_static_file_download(filename))
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} else {
|
||||
Either::B(chuncked_static_file_download(filename))
|
||||
}
|
||||
});
|
||||
|
||||
return Box::new(response);
|
||||
}
|
||||
|
||||
fn handle_request(api: Arc<ApiServer>, req: Request<Body>) -> BoxFut {
|
||||
|
||||
let (parts, body) = req.into_parts();
|
||||
|
||||
let method = parts.method.clone();
|
||||
let path = parts.uri.path();
|
||||
|
||||
// normalize path
|
||||
// do not allow ".", "..", or hidden files ".XXXX"
|
||||
// also remove empty path components
|
||||
|
||||
let items = path.split('/');
|
||||
let mut path = String::new();
|
||||
let mut components = vec![];
|
||||
|
||||
for name in items {
|
||||
if name.is_empty() { continue; }
|
||||
if name.starts_with(".") {
|
||||
http_error_future!(BAD_REQUEST, "Path contains illegal components.\n");
|
||||
}
|
||||
path.push('/');
|
||||
path.push_str(name);
|
||||
components.push(name);
|
||||
}
|
||||
|
||||
let comp_len = components.len();
|
||||
|
||||
println!("REQUEST {} {}", method, path);
|
||||
println!("COMPO {:?}", components);
|
||||
|
||||
if comp_len >= 1 && components[0] == "api3" {
|
||||
println!("GOT API REQUEST");
|
||||
if comp_len >= 2 {
|
||||
let format = components[1];
|
||||
if format != "json" {
|
||||
http_error_future!(BAD_REQUEST, format!("Unsupported output format '{}'.", format))
|
||||
}
|
||||
|
||||
if let Some(api_method) = api.find_method(&components[2..], method) {
|
||||
// fixme: handle auth
|
||||
return handle_sync_api_request(api_method, parts, body);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// not Auth for accessing files!
|
||||
|
||||
let filename = api.find_alias(&components);
|
||||
return handle_static_file_download(filename);
|
||||
}
|
||||
|
||||
|
||||
http_error_future!(NOT_FOUND, "Path not found.")
|
||||
//Box::new(ok(Response::new(Body::from("RETURN WEB GUI\n"))))
|
||||
}
|
||||
use hyper;
|
||||
|
||||
fn main() {
|
||||
println!("Fast Static Type Definitions 1");
|
||||
|
|
@ -250,45 +18,23 @@ fn main() {
|
|||
static ref ROUTER: MethodInfo = apitest::api3::router();
|
||||
}
|
||||
|
||||
let mut api_server = ApiServer::new("/var/www", &ROUTER);
|
||||
let mut config = ApiConfig::new("/var/www", &ROUTER);
|
||||
|
||||
// add default dirs which includes jquery and bootstrap
|
||||
// my $base = '/usr/share/libpve-http-server-perl';
|
||||
// add_dirs($self->{dirs}, '/css/' => "$base/css/");
|
||||
// add_dirs($self->{dirs}, '/js/' => "$base/js/");
|
||||
// add_dirs($self->{dirs}, '/fonts/' => "$base/fonts/");
|
||||
api_server.add_alias("novnc", "/usr/share/novnc-pve");
|
||||
api_server.add_alias("extjs", "/usr/share/javascript/extjs");
|
||||
api_server.add_alias("fontawesome", "/usr/share/fonts-font-awesome");
|
||||
api_server.add_alias("xtermjs", "/usr/share/pve-xtermjs");
|
||||
api_server.add_alias("widgettoolkit", "/usr/share/javascript/proxmox-widget-toolkit");
|
||||
config.add_alias("novnc", "/usr/share/novnc-pve");
|
||||
config.add_alias("extjs", "/usr/share/javascript/extjs");
|
||||
config.add_alias("fontawesome", "/usr/share/fonts-font-awesome");
|
||||
config.add_alias("xtermjs", "/usr/share/pve-xtermjs");
|
||||
config.add_alias("widgettoolkit", "/usr/share/javascript/proxmox-widget-toolkit");
|
||||
|
||||
let api_server = Arc::new(api_server);
|
||||
let rest_server = RestServer::new(config);
|
||||
|
||||
let new_svc = move || {
|
||||
|
||||
let api_server = api_server.clone();
|
||||
|
||||
service_fn(move |req| {
|
||||
handle_request(api_server.clone(), req).then(|result| {
|
||||
match result {
|
||||
Ok(res) => Ok::<_,String>(res),
|
||||
Err(err) => {
|
||||
if let Some(apierr) = err.downcast_ref::<ApiError>() {
|
||||
let mut resp = Response::new(Body::from(apierr.message.clone()));
|
||||
*resp.status_mut() = apierr.code;
|
||||
Ok(resp)
|
||||
} else {
|
||||
Ok(error_response!(BAD_REQUEST, err.to_string()))
|
||||
}
|
||||
}
|
||||
}
|
||||
})
|
||||
})
|
||||
};
|
||||
|
||||
let server = Server::bind(&addr)
|
||||
.serve(new_svc)
|
||||
let server = hyper::Server::bind(&addr)
|
||||
.serve(rest_server)
|
||||
.map_err(|e| eprintln!("server error: {}", e));
|
||||
|
||||
// Run this server for... forever!
|
||||
|
|
|
|||
Loading…
Reference in New Issue