use fibers::net::TcpStream;
use miasht::builtin::headers::ContentLength;
use miasht::client::{Connection, Request, RequestBuilder};
use serde::{ser, Serialize};
use serde::ser::Impossible;
use url::{self, Url};
use {Error, ErrorKind, Result};
use types::{EntryPoint, HttpMethod};
use serializers::{HttpHeaderSerializer, UrlPathSerializer, UrlQuerySerializer};
#[derive(Debug)]
pub struct RpcRequestSerializer {
temp_url: Url,
is_path_initialized: bool,
method: HttpMethod,
entry_point: EntryPoint,
connection: Option<Connection<TcpStream>>,
request: Option<RequestBuilder<TcpStream>>,
}
impl RpcRequestSerializer {
pub fn new(
connection: Connection<TcpStream>,
method: HttpMethod,
entry_point: EntryPoint,
) -> Self {
RpcRequestSerializer {
temp_url: Url::parse("http://localhost/").expect("Never fail"),
is_path_initialized: false,
method,
entry_point,
connection: Some(connection),
request: None,
}
}
pub fn finish(mut self, body: &[u8]) -> Result<Request<TcpStream>> {
let mut request = self.take_request();
request.add_header(&ContentLength(body.len() as u64));
Ok(request.finish())
}
fn take_request(&mut self) -> RequestBuilder<TcpStream> {
if let Some(request) = self.request.take() {
request
} else {
assert!(self.connection.is_some());
if !self.is_path_initialized {
let mut serializer = track_try_unwrap!(UrlPathSerializer::new(
&self.entry_point,
&mut self.temp_url,
));
track_try_unwrap!(().serialize(&mut serializer));
}
let relative_url = &self.temp_url[url::Position::BeforePath..];
let connection = self.connection.take().unwrap();
connection.build_request(self.method, relative_url)
}
}
}
impl<'a> ser::Serializer for &'a mut RpcRequestSerializer {
type Ok = ();
type Error = Error;
type SerializeSeq = Impossible<Self::Ok, Self::Error>;
type SerializeTuple = Impossible<Self::Ok, Self::Error>;
type SerializeTupleStruct = Impossible<Self::Ok, Self::Error>;
type SerializeTupleVariant = Impossible<Self::Ok, Self::Error>;
type SerializeMap = Impossible<Self::Ok, Self::Error>;
type SerializeStruct = Self;
type SerializeStructVariant = Self;
fn serialize_bool(self, _v: bool) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_i8(self, _v: i8) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_i16(self, _v: i16) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_i32(self, _v: i32) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_i64(self, _v: i64) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_u8(self, _v: u8) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_u16(self, _v: u16) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_u32(self, _v: u32) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_u64(self, _v: u64) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_f32(self, _v: f32) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_f64(self, _v: f64) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_char(self, _v: char) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_str(self, _v: &str) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_none(self) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_some<T>(self, _value: &T) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
track_panic!(ErrorKind::Invalid);
}
fn serialize_unit(self) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_newtype_struct<T>(self, _name: &'static str, value: &T) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
track!(value.serialize(self))
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
value: &T,
) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
track!(value.serialize(self))
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
track_panic!(ErrorKind::Invalid);
}
fn serialize_struct(self, _name: &'static str, _len: usize) -> Result<Self::SerializeStruct> {
Ok(self)
}
fn serialize_struct_variant(
self,
name: &'static str,
_variant_index: u32,
_variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant> {
track!(self.serialize_struct(name, len))
}
}
impl<'a> ser::SerializeStruct for &'a mut RpcRequestSerializer {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
match key {
"path" => {
track_assert!(self.connection.is_some(), ErrorKind::Invalid);
{
let mut serializer = track!(UrlPathSerializer::new(
&self.entry_point,
&mut self.temp_url,
))?;
track!(value.serialize(&mut serializer))?;
}
self.is_path_initialized = true;
Ok(())
}
"query" => {
track_assert!(self.connection.is_some(), ErrorKind::Invalid);
if !self.is_path_initialized {
let mut serializer = track!(UrlPathSerializer::new(
&self.entry_point,
&mut self.temp_url,
))?;
track!(value.serialize(&mut serializer))?;
self.is_path_initialized = true;
}
{
let mut serializer = UrlQuerySerializer::new(self.temp_url.query_pairs_mut());
track!(value.serialize(&mut serializer))?;
}
let relative_url = &self.temp_url[url::Position::BeforePath..];
let connection = self.connection.take().unwrap();
self.request = Some(connection.build_request(self.method, relative_url));
Ok(())
}
"header" => {
let mut request = self.take_request();
{
let mut serializer = HttpHeaderSerializer::new(request.headers_mut());
track!(value.serialize(&mut serializer))?;
}
self.request = Some(request);
Ok(())
}
_ => track_panic!(ErrorKind::Invalid, "Unknown field: {:?}", key),
}
}
fn end(self) -> Result<Self::Ok> {
Ok(())
}
}
impl<'a> ser::SerializeStructVariant for &'a mut RpcRequestSerializer {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
match key {
"header" => {
let request = self.request.as_mut().unwrap();
let mut serializer = HttpHeaderSerializer::new(request.headers_mut());
track!(value.serialize(&mut serializer))?;
Ok(())
}
_ => track_panic!(ErrorKind::Invalid, "Unknown field: {:?}", key),
}
}
fn end(self) -> Result<Self::Ok> {
Ok(())
}
}