Update jsonrpc dependencies and rewrite dapps to futures. (#6522)
* Bump version. * Fix RPC crate. * Fix BoxFuture in crates. * Compiles and passes tests! * Get rid of .boxed() * Fixing issues with the UI. * Remove minihttp. Support threads. * Reimplement files serving to do it in chunks. * Increase chunk size. * Remove some unecessary copying. * Fix tests. * Fix stratum warning and ipfs todo. * Switch to proper branch of jsonrpc. * Update Cargo.lock. * Update docs. * Include dapps-glue in workspace. * fixed merge artifacts * Fix test compilation.
This commit is contained in:
committed by
Arkadiy Paronyan
parent
492da38d67
commit
e8b418ca03
@@ -14,61 +14,25 @@
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use time::{self, Duration};
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use std::io;
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use std::time::{Duration, SystemTime};
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use hyper::{self, header, StatusCode};
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use hyper::mime::Mime;
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use hyper::header;
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use hyper::server;
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use hyper::uri::RequestUri;
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use hyper::net::HttpStream;
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use hyper::status::StatusCode;
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use hyper::{Decoder, Encoder, Next};
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use endpoint::EndpointPath;
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use handlers::{ContentHandler, add_security_headers};
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use handlers::{Reader, ContentHandler, add_security_headers};
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use {Embeddable};
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/// Represents a file that can be sent to client.
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/// Implementation should keep track of bytes already sent internally.
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pub trait DappFile: Send {
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pub trait DappFile {
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/// A reader type returned by this file.
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type Reader: io::Read;
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/// Returns a content-type of this file.
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fn content_type(&self) -> &str;
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fn content_type(&self) -> &Mime;
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/// Checks if all bytes from that file were written.
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fn is_drained(&self) -> bool;
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/// Fetch next chunk to write to the client.
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fn next_chunk(&mut self) -> &[u8];
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/// How many files have been written to the client.
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fn bytes_written(&mut self, bytes: usize);
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}
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/// Dapp as a (dynamic) set of files.
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pub trait Dapp: Send + 'static {
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/// File type
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type DappFile: DappFile;
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/// Returns file under given path.
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fn file(&self, path: &str) -> Option<Self::DappFile>;
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}
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/// Currently served by `PageHandler` file
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pub enum ServedFile<T: Dapp> {
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/// File from dapp
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File(T::DappFile),
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/// Error (404)
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Error(ContentHandler),
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}
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impl<T: Dapp> ServedFile<T> {
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pub fn new(embeddable_on: Embeddable) -> Self {
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ServedFile::Error(ContentHandler::error(
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StatusCode::NotFound,
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"404 Not Found",
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"Requested dapp resource was not found.",
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None,
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embeddable_on,
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))
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}
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/// Convert this file into io::Read instance.
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fn into_reader(self) -> Self::Reader where Self: Sized;
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}
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/// Defines what cache headers should be appended to returned resources.
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@@ -84,194 +48,55 @@ impl Default for PageCache {
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}
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}
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/// A generic type for `PageHandler` allowing to set the URL.
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/// Used by dapps fetching to set the URL after the content was downloaded.
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pub trait PageHandlerWaiting: server::Handler<HttpStream> + Send {
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fn set_uri(&mut self, uri: &RequestUri);
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}
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/// A handler for a single webapp.
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/// Resolves correct paths and serves as a plumbing code between
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/// hyper server and dapp.
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pub struct PageHandler<T: Dapp> {
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/// A Dapp.
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pub app: T,
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pub struct PageHandler<T: DappFile> {
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/// File currently being served
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pub file: ServedFile<T>,
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/// Optional prefix to strip from path.
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pub prefix: Option<String>,
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/// Requested path.
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pub path: EndpointPath,
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pub file: Option<T>,
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/// Flag indicating if the file can be safely embeded (put in iframe).
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pub safe_to_embed_on: Embeddable,
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/// Cache settings for this page.
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pub cache: PageCache,
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}
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impl<T: Dapp> PageHandlerWaiting for PageHandler<T> {
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fn set_uri(&mut self, uri: &RequestUri) {
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trace!(target: "dapps", "Setting URI: {:?}", uri);
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self.file = match *uri {
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RequestUri::AbsolutePath { ref path, .. } => {
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self.app.file(&self.extract_path(path))
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},
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RequestUri::AbsoluteUri(ref url) => {
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self.app.file(&self.extract_path(url.path()))
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},
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_ => None,
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}.map_or_else(|| ServedFile::new(self.safe_to_embed_on.clone()), |f| ServedFile::File(f));
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}
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}
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impl<T: DappFile> PageHandler<T> {
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pub fn into_response(self) -> (Option<Reader<T::Reader>>, hyper::Response) {
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let file = match self.file {
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None => return (None, ContentHandler::error(
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StatusCode::NotFound,
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"File not found",
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"Requested file has not been found.",
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None,
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self.safe_to_embed_on,
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).into()),
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Some(file) => file,
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};
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impl<T: Dapp> PageHandler<T> {
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fn extract_path(&self, path: &str) -> String {
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let app_id = &self.path.app_id;
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let prefix = "/".to_owned() + self.prefix.as_ref().unwrap_or(app_id);
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let prefix_with_slash = prefix.clone() + "/";
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let query_pos = path.find('?').unwrap_or_else(|| path.len());
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let mut res = hyper::Response::new()
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.with_status(StatusCode::Ok);
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// Index file support
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match path == "/" || path == &prefix || path == &prefix_with_slash {
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true => "index.html".to_owned(),
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false => if path.starts_with(&prefix_with_slash) {
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path[prefix_with_slash.len()..query_pos].to_owned()
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} else if path.starts_with("/") {
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path[1..query_pos].to_owned()
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} else {
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path[0..query_pos].to_owned()
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// headers
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{
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let mut headers = res.headers_mut();
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if let PageCache::Enabled = self.cache {
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let validity_secs = 365u32 * 24 * 3600;
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let validity = Duration::from_secs(validity_secs as u64);
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headers.set(header::CacheControl(vec![
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header::CacheDirective::Public,
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header::CacheDirective::MaxAge(validity_secs),
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]));
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headers.set(header::Expires(header::HttpDate::from(SystemTime::now() + validity)));
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}
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headers.set(header::ContentType(file.content_type().to_owned()));
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add_security_headers(&mut headers, self.safe_to_embed_on);
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}
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let (reader, body) = Reader::pair(file.into_reader(), Vec::new());
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res.set_body(body);
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(Some(reader), res)
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}
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}
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impl<T: Dapp> server::Handler<HttpStream> for PageHandler<T> {
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fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
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self.set_uri(req.uri());
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Next::write()
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}
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fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
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Next::write()
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}
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fn on_response(&mut self, res: &mut server::Response) -> Next {
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match self.file {
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ServedFile::File(ref f) => {
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res.set_status(StatusCode::Ok);
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if let PageCache::Enabled = self.cache {
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let mut headers = res.headers_mut();
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let validity = Duration::days(365);
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headers.set(header::CacheControl(vec![
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header::CacheDirective::Public,
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header::CacheDirective::MaxAge(validity.num_seconds() as u32),
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]));
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headers.set(header::Expires(header::HttpDate(time::now() + validity)));
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}
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match f.content_type().parse() {
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Ok(mime) => res.headers_mut().set(header::ContentType(mime)),
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Err(()) => debug!(target: "dapps", "invalid MIME type: {}", f.content_type()),
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}
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// Security headers:
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add_security_headers(&mut res.headers_mut(), self.safe_to_embed_on.take());
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Next::write()
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},
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ServedFile::Error(ref mut handler) => {
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handler.on_response(res)
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}
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}
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}
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fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
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match self.file {
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ServedFile::Error(ref mut handler) => handler.on_response_writable(encoder),
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ServedFile::File(ref f) if f.is_drained() => Next::end(),
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ServedFile::File(ref mut f) => match encoder.write(f.next_chunk()) {
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Ok(bytes) => {
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f.bytes_written(bytes);
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Next::write()
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},
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Err(e) => match e.kind() {
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::std::io::ErrorKind::WouldBlock => Next::write(),
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_ => Next::end(),
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},
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}
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}
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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pub struct TestWebAppFile;
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impl DappFile for TestWebAppFile {
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fn content_type(&self) -> &str {
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unimplemented!()
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}
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fn is_drained(&self) -> bool {
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unimplemented!()
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}
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fn next_chunk(&mut self) -> &[u8] {
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unimplemented!()
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}
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fn bytes_written(&mut self, _bytes: usize) {
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unimplemented!()
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}
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}
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#[derive(Default)]
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pub struct TestWebapp;
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impl Dapp for TestWebapp {
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type DappFile = TestWebAppFile;
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fn file(&self, _path: &str) -> Option<Self::DappFile> {
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None
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}
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}
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}
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#[test]
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fn should_extract_path_with_appid() {
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// given
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let path1 = "/";
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let path2= "/test.css";
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let path3 = "/app/myfile.txt";
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let path4 = "/app/myfile.txt?query=123";
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let page_handler = PageHandler {
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app: test::TestWebapp,
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prefix: None,
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path: EndpointPath {
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app_id: "app".to_owned(),
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app_params: vec![],
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host: "".to_owned(),
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port: 8080,
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using_dapps_domains: true,
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},
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file: ServedFile::new(None),
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cache: Default::default(),
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safe_to_embed_on: None,
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};
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// when
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let res1 = page_handler.extract_path(path1);
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let res2 = page_handler.extract_path(path2);
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let res3 = page_handler.extract_path(path3);
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let res4 = page_handler.extract_path(path4);
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// then
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assert_eq!(&res1, "index.html");
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assert_eq!(&res2, "test.css");
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assert_eq!(&res3, "myfile.txt");
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assert_eq!(&res4, "myfile.txt");
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}
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