Move HTTP functions to HTTP module
This commit is contained in:
Koxiaet
parent
ce0683e1f9
commit
3945599015
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@ -3,14 +3,17 @@
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mod graphiql_source;
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mod playground_source;
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mod stream_body;
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mod multipart;
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use itertools::Itertools;
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pub use graphiql_source::graphiql_source;
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pub use playground_source::{playground_source, GraphQLPlaygroundConfig};
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pub use stream_body::StreamBody;
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pub use multipart::{receive_multipart, MultipartOptions};
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use crate::{Error, GQLQueryResponse, ParseRequestError, Pos, QueryError, Result, Variables};
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use crate::{GQLQuery, ParseRequestError, Pos, QueryError, Variables};
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use futures::io::AsyncRead;
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use serde::ser::{SerializeMap, SerializeSeq};
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use serde::{Deserialize, Serialize, Serializer};
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@ -28,6 +31,24 @@ pub struct GQLRequest {
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pub variables: Option<serde_json::Value>,
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}
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/// Receive a GraphQL request from a content type and body.
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pub async fn receive_body(
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content_type: Option<impl AsRef<str>>,
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body: impl AsyncRead,
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opts: MultipartOptions,
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) -> Result<GQLQuery, ParseRequestError> {
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if let Some(Ok(boundary)) = content_type.map(multer::parse_boundary) {
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receive_multipart(body, boundary, opts)
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} else {
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futures::pin_mut!(body);
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let mut data = Vec::new();
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body.read_to_end(data).await.map_err(ParseRequestError::Io)?;
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Ok(GQLQuery::new_with_http_request(
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serde_json::from_slice(&data).map_err(ParseRequestError::InvalidRequest)?,
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))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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119
src/http/multipart.rs
Normal file
119
src/http/multipart.rs
Normal file
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@ -0,0 +1,119 @@
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use futures::stream::{self, Stream};
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use futures::io::AsyncRead;
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use crate::{GQLQuery, ParseRequestError};
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use std::collections::HashMap;
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use multer::{Multipart, Constraints, SizeLimit};
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use std::io::{self, SeekFrom};
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use std::task::Poll;
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use bytes::Bytes;
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use std::pin::Pin;
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/// Options for `receive_multipart`.
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#[derive(Default, Clone)]
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#[non_exhaustive]
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pub struct MultipartOptions {
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/// Maximum file size.
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pub max_file_size: Option<usize>,
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/// Maximum number of files.
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pub max_num_files: Option<usize>,
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}
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/// Receive a multipart request.
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pub async fn receive_multipart(
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body: impl AsyncRead,
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boundary: impl Into<String>,
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opts: MultipartOptions,
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) -> Result<GQLQuery, ParseRequestError> {
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let mut multipart = Multipart::new_with_constraints(
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reader_stream(body),
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boundary,
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Constraints::new().size_limit({
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let mut limit = SizeLimit::new();
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if let (Some(max_file_size), Some(max_num_files)) =
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(opts.max_file_size, opts.max_file_size)
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{
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limit = limit.whole_stream((max_file_size * max_num_files) as u64);
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}
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if let Some(max_file_size) = opts.max_file_size {
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limit = limit.per_field(max_file_size as u64);
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}
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limit
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}),
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);
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let mut query = None;
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let mut map = None;
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let mut files = Vec::new();
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while let Some(mut field) = multipart.next_field().await? {
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match field.name() {
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Some("operations") => {
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let request_str = field.text().await?;
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query = Some(GQLQuery::new_with_http_request(
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serde_json::from_str(&request_str)
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.map_err(ParseRequestError::InvalidRequest)?,
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));
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}
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Some("map") => {
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let map_str = field.text().await?;
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map = Some(
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serde_json::from_str::<HashMap<String, Vec<String>>>(&map_str)
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.map_err(ParseRequestError::InvalidFilesMap)?,
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);
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}
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_ => {
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if let Some(name) = field.name().map(ToString::to_string) {
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if let Some(filename) = field.file_name().map(ToString::to_string) {
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let content_type =
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field.content_type().map(|mime| mime.to_string());
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let mut file =
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tempfile::tempfile().map_err(ParseRequestError::Io)?;
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while let Some(chunk) = field.chunk().await.unwrap() {
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file.write(&chunk).map_err(ParseRequestError::Io)?;
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}
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file.seek(SeekFrom::Start(0))?;
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files.push((name, filename, content_type, file));
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}
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}
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}
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}
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}
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let mut query = query.ok_or(ParseRequestError::MissingOperatorsPart)?;
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let map = map.as_mut().ok_or(ParseRequestError::MissingMapPart)?;
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for (name, filename, content_type, file) in files {
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if let Some(var_paths) = map.remove(&name) {
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for var_path in var_paths {
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query.set_upload(
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&var_path,
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filename.clone(),
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content_type.clone(),
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file.try_clone().unwrap(),
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);
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}
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}
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}
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if !map.is_empty() {
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return Err(ParseRequestError::MissingFiles);
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}
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Ok(query)
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}
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fn reader_stream(
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mut reader: impl AsyncRead + Unpin + Send + 'static,
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) -> impl Stream<Item = io::Result<Bytes>> + Unpin + Send + 'static {
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let mut buf = [0u8; 2048];
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stream::poll_fn(move |cx| {
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Poll::Ready(
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match futures::ready!(Pin::new(&mut reader).poll_read(cx, &mut buf)?) {
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0 => None,
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size => Some(Ok(Bytes::copy_from_slice(&buf[..size]))),
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},
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)
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})
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}
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119
src/query.rs
119
src/query.rs
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@ -20,16 +20,6 @@ use std::io::{Seek, SeekFrom, Write};
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use std::sync::atomic::AtomicUsize;
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use std::sync::Arc;
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/// Options for `GQLQuery::receive_multipart`
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#[derive(Default, Clone)]
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pub struct ReceiveMultipartOptions {
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/// Maximum file size.
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pub max_file_size: Option<usize>,
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/// Maximum number of files.
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pub max_num_files: Option<usize>,
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}
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pub struct GQLQuery {
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pub(crate) query: String,
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pub(crate) operation_name: Option<String>,
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@ -63,100 +53,6 @@ impl GQLQuery {
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}
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}
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pub async fn receive_request(
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content_type: Option<impl AsRef<str>>,
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mut body: impl AsyncRead,
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opts: ReceiveMultipartOptions,
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) -> std::result::Result<Self, ParseRequestError> {
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if let Some(boundary) = content_type.and_then(|ct| multer::parse_boundary(ct).ok()) {
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// multipart
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let mut multipart = Multipart::new_with_constraints(
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reader_stream(body),
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boundary,
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Constraints::new().size_limit({
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let mut limit = SizeLimit::new();
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if let (Some(max_file_size), Some(max_num_files)) =
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(opts.max_file_size, opts.max_file_size)
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{
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limit = limit.whole_stream((max_file_size * max_num_files) as u64);
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}
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if let Some(max_file_size) = opts.max_file_size {
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limit = limit.per_field(max_file_size as u64);
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}
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limit
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}),
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);
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let mut query = None;
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let mut map = None;
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let mut files = Vec::new();
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while let Some(mut field) = multipart.next_field().await? {
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match field.name() {
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Some("operations") => {
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let request_str = field.text().await?;
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query = Some(Self::new_with_http_request(
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serde_json::from_str(&request_str)
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.map_err(ParseRequestError::InvalidRequest)?,
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));
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}
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Some("map") => {
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let map_str = field.text().await?;
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map = Some(
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serde_json::from_str::<HashMap<String, Vec<String>>>(&map_str)
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.map_err(ParseRequestError::InvalidFilesMap)?,
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);
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}
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_ => {
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if let Some(name) = field.name().map(ToString::to_string) {
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if let Some(filename) = field.file_name().map(ToString::to_string) {
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let content_type =
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field.content_type().map(|mime| mime.to_string());
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let mut file =
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tempfile::tempfile().map_err(ParseRequestError::Io)?;
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while let Some(chunk) = field.chunk().await.unwrap() {
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file.write(&chunk).map_err(ParseRequestError::Io)?;
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}
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file.seek(SeekFrom::Start(0))?;
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files.push((name, filename, content_type, file));
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}
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}
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}
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}
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}
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let mut query = query.ok_or(ParseRequestError::MissingOperatorsPart)?;
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let map = map.as_mut().ok_or(ParseRequestError::MissingMapPart)?;
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for (name, filename, content_type, file) in files {
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if let Some(var_paths) = map.remove(&name) {
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for var_path in var_paths {
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query.set_upload(
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&var_path,
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filename.clone(),
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content_type.clone(),
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file.try_clone().unwrap(),
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);
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}
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}
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}
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if !map.is_empty() {
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return Err(ParseRequestError::MissingFiles);
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}
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Ok(query)
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} else {
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let mut data = Vec::new();
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body.read_to_end(&mut data)
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.await
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.map_err(ParseRequestError::Io)?;
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Ok(Self::new_with_http_request(
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serde_json::from_slice(&data).map_err(ParseRequestError::InvalidRequest)?,
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))
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}
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}
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/// Specify the operation name.
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pub fn operation_name<T: Into<String>>(self, name: T) -> Self {
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Self {
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@ -258,18 +154,3 @@ impl From<Error> for GQLQueryResponse {
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}
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}
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}
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fn reader_stream(
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mut reader: impl AsyncRead + Unpin + Send + 'static,
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) -> impl Stream<Item = io::Result<Bytes>> + Unpin + Send + 'static {
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let mut buf = [0u8; 2048];
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stream::poll_fn(move |cx| {
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Poll::Ready(
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match futures::ready!(Pin::new(&mut reader).poll_read(cx, &mut buf)?) {
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0 => None,
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size => Some(Ok(Bytes::copy_from_slice(&buf[..size]))),
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},
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)
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})
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}
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