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use std::{fmt::Debug, str::FromStr, sync::Arc};
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use futures_util::{SinkExt, StreamExt};
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use giterated_models::{
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authenticated::{Authenticated, AuthenticationSourceProviders},
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error::OperationError,
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error::{IntoInternalError, NetworkOperationError},
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message::GiteratedMessage,
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object::{GiteratedObject, Object, ObjectRequest, ObjectRequestError, ObjectResponse},
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object_backend::ObjectBackend,
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operation::GiteratedOperation,
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};
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use serde::de::DeserializeOwned;
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use tokio_tungstenite::tungstenite::Message;
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use crate::{DaemonConnectionPool, Socket};
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#[derive(Clone)]
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pub struct NetworkOperationState {
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authentication: Vec<Arc<dyn AuthenticationSourceProviders + Send + Sync>>,
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}
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impl NetworkOperationState {
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pub fn new() -> Self {
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Self {
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authentication: vec![],
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}
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}
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pub fn authenticate<S: AuthenticationSourceProviders + Send + Sync + 'static>(
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&mut self,
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source: S,
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) {
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self.authentication.push(Arc::new(source))
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}
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}
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#[async_trait::async_trait(?Send)]
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impl ObjectBackend<NetworkOperationState> for DaemonConnectionPool {
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async fn object_operation<O: GiteratedObject + Debug, D: GiteratedOperation<O> + Debug>(
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&self,
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object: O,
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operation: &str,
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payload: D,
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operation_state: &NetworkOperationState,
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) -> Result<D::Success, OperationError<D::Failure>> {
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let message = GiteratedMessage {
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object,
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operation: operation.to_string(),
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payload,
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};
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let mut connection = self.0.get().await.map_err(|e| {
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OperationError::Internal(anyhow::Error::from(ConnectionFailed(e.to_string())))
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})?;
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let mut authenticated = Authenticated::new(message);
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for authentication in &operation_state.authentication {
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authenticated.append_authentication(authentication.clone());
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}
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send_expect(&mut connection, authenticated).await
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}
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async fn get_object<O: GiteratedObject + Debug>(
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&self,
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object_str: &str,
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operation_state: &NetworkOperationState,
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) -> Result<Object<NetworkOperationState, O, Self>, OperationError<ObjectRequestError>> {
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let operation = ObjectRequest(object_str.to_string());
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info!("Get object: {:?}", operation);
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let message = GiteratedMessage {
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object: self.0.manager().target_instance.clone(),
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operation: ObjectRequest::operation_name().to_string(),
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payload: operation,
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};
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let mut connection = self.0.get().await.map_err(|e| {
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OperationError::Internal(anyhow::Error::from(ConnectionFailed(e.to_string())))
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})?;
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let mut authenticated = Authenticated::new(message);
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for authentication in &operation_state.authentication {
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authenticated.append_authentication(authentication.clone());
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}
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let object_raw: ObjectResponse = send_expect(&mut connection, authenticated).await?;
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if let Ok(object) = O::from_str(&object_raw.0) {
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Ok(unsafe { Object::new_unchecked(object, self.clone()) })
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} else {
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panic!()
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}
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}
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}
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async fn send_expect<
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O: GiteratedObject,
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D: GiteratedOperation<O>,
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B: DeserializeOwned,
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R: DeserializeOwned,
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>(
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socket: &mut Socket,
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message: Authenticated<O, D>,
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) -> Result<R, OperationError<B>> {
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let payload = bincode::serialize(&message.into_payload()).unwrap();
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socket
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.send(Message::Binary(payload))
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.await
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.as_internal_error()?;
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while let Some(message) = socket.next().await {
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let payload = match message.as_internal_error()? {
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Message::Binary(payload) => payload,
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_ => {
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continue;
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}
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};
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let raw_result =
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bincode::deserialize::<Result<Vec<u8>, NetworkOperationError<Vec<u8>>>>(&payload)
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.map_err(|e| OperationError::Internal(anyhow::Error::from(e)))?;
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let raw_result = match raw_result {
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Ok(raw) => Ok(serde_json::from_slice(&raw)
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.map_err(|e| OperationError::Internal(anyhow::Error::from(e)))?),
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Err(err) => Err(match err {
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NetworkOperationError::Operation(err) => OperationError::Operation(
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serde_json::from_slice(&err)
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.map_err(|e| OperationError::Internal(anyhow::Error::from(e)))?,
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),
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NetworkOperationError::Internal => {
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OperationError::Internal(anyhow::Error::from(NetworkError))
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}
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NetworkOperationError::Unhandled => OperationError::Unhandled,
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}),
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};
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return raw_result;
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}
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panic!()
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}
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#[derive(Debug, thiserror::Error)]
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#[error("a remote internal error occurred")]
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pub struct NetworkError;
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#[derive(Debug, thiserror::Error)]
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#[error("failed to get connection from pool: {0}")]
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pub struct ConnectionFailed(String);
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