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use super::{HttpAccount, HttpStore};
use bytes::BytesMut;
use futures::{
future::{err, result},
Future, Stream,
};
use interledger_packet::{Address, ErrorCode, Fulfill, Packet, Reject, RejectBuilder};
use interledger_service::*;
use log::{error, trace};
use reqwest::{
header::{HeaderMap, HeaderName, HeaderValue},
r#async::{Chunk, Client, ClientBuilder, Response as HttpResponse},
};
use std::str::FromStr;
use std::{convert::TryFrom, marker::PhantomData, sync::Arc, time::Duration};
#[derive(Clone)]
pub struct HttpClientService<S, O, A> {
client: Client,
store: Arc<S>,
next: O,
account_type: PhantomData<A>,
}
impl<S, O, A> HttpClientService<S, O, A>
where
S: AddressStore + HttpStore,
O: OutgoingService<A> + Clone,
A: HttpAccount,
{
pub fn new(store: S, next: O) -> Self {
let mut headers = HeaderMap::with_capacity(2);
headers.insert(
HeaderName::from_static("content-type"),
HeaderValue::from_static("application/octet-stream"),
);
let client = ClientBuilder::new()
.default_headers(headers)
.timeout(Duration::from_secs(30))
.build()
.unwrap();
HttpClientService {
client,
store: Arc::new(store),
next,
account_type: PhantomData,
}
}
}
impl<S, O, A> OutgoingService<A> for HttpClientService<S, O, A>
where
S: AddressStore + HttpStore,
O: OutgoingService<A>,
A: HttpAccount,
{
type Future = BoxedIlpFuture;
fn send_request(&mut self, request: OutgoingRequest<A>) -> Self::Future {
let ilp_address = self.store.get_ilp_address();
let ilp_address_clone = ilp_address.clone();
if let Some(url) = request.to.get_http_url() {
trace!(
"Sending outgoing ILP over HTTP packet to account: {} (URL: {})",
request.to.id(),
url.as_str()
);
let token = request.to.get_http_auth_token().unwrap_or("");
let auth = match AuthToken::from_str(token) {
Ok(auth) => auth,
Err(_) => {
return Box::new(err(RejectBuilder {
code: ErrorCode::T00_INTERNAL_ERROR,
message: &[],
triggered_by: None,
data: &[],
}
.build()))
}
};
Box::new(
self.client
.post(url.as_ref())
.header("authorization", auth.to_bearer())
.body(BytesMut::from(request.prepare).freeze())
.send()
.map_err(move |err| {
error!("Error sending HTTP request: {:?}", err);
let code = if err.is_client_error() {
ErrorCode::F00_BAD_REQUEST
} else {
ErrorCode::T01_PEER_UNREACHABLE
};
let message = if let Some(status) = err.status() {
format!("Error sending ILP over HTTP request: {}", status)
} else if let Some(err) = err.get_ref() {
format!("Error sending ILP over HTTP request: {:?}", err)
} else {
"Error sending ILP over HTTP request".to_string()
};
RejectBuilder {
code,
message: message.as_str().as_bytes(),
triggered_by: Some(&ilp_address),
data: &[],
}
.build()
})
.and_then(move |resp| parse_packet_from_response(resp, ilp_address_clone)),
)
} else {
Box::new(self.next.send_request(request))
}
}
}
fn parse_packet_from_response(
response: HttpResponse,
ilp_address: Address,
) -> impl Future<Item = Fulfill, Error = Reject> {
let ilp_address_clone = ilp_address.clone();
result(response.error_for_status().map_err(|err| {
error!("HTTP error sending ILP over HTTP packet: {:?}", err);
let code = if let Some(status) = err.status() {
if status.is_client_error() {
ErrorCode::F02_UNREACHABLE
} else {
ErrorCode::T01_PEER_UNREACHABLE
}
} else {
ErrorCode::T00_INTERNAL_ERROR
};
RejectBuilder {
code,
message: &[],
triggered_by: Some(&ilp_address),
data: &[],
}
.build()
}))
.and_then(move |response: HttpResponse| {
let ilp_address_clone = ilp_address.clone();
let decoder = response.into_body();
decoder.concat2().map_err(move |err| {
error!("Error getting HTTP response body: {:?}", err);
RejectBuilder {
code: ErrorCode::T01_PEER_UNREACHABLE,
message: &[],
triggered_by: Some(&ilp_address_clone.clone()),
data: &[],
}
.build()
})
})
.and_then(move |body: Chunk| {
let body = BytesMut::from(body.to_vec());
match Packet::try_from(body) {
Ok(Packet::Fulfill(fulfill)) => Ok(fulfill),
Ok(Packet::Reject(reject)) => Err(reject),
_ => Err(RejectBuilder {
code: ErrorCode::T01_PEER_UNREACHABLE,
message: &[],
triggered_by: Some(&ilp_address_clone.clone()),
data: &[],
}
.build()),
}
})
}