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ambee/giterated

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Amber - ⁨1⁩ year ago

parent: tbd commit: ⁨1788060⁩

⁨plugins/giterated-protocol/src/handlers.rs⁩ - ⁨7566⁩ bytes
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1 use std::{fmt::Display, net::SocketAddr, str::FromStr};
2
3 use anyhow::Error;
4 use futures_util::{SinkExt, StreamExt};
5 use giterated_models::{
6 error::{NetworkOperationError, OperationError},
7 instance::Instance,
8 object::GiteratedObject,
9 operation::GiteratedOperation,
10 };
11 use giterated_plugin::{abi::vtable::runtime::RuntimeHandle, Failure, Object, Operation, Success};
12 use serde::{Deserialize, Serialize};
13 use tokio::net::TcpStream;
14 use tokio_tungstenite::{connect_async, tungstenite::Message, MaybeTlsStream, WebSocketStream};
15
16 use crate::{Authenticated, GiteratedMessage, ProtocolState, RemoteError};
17
18 pub async fn handle_network_operation<OS: Send + Sync + Clone + 'static>(
19 _state: ProtocolState,
20 object: NetworkedObject,
21 operation: NetworkedOperation,
22 runtime: RuntimeHandle,
23 ) -> Result<Vec<u8>, OperationError<Vec<u8>>> {
24 trace!("Handle network operation {}", operation.name);
25
26 runtime
27 .handle_serialized(&object.0, &operation.name, &operation.payload)
28 .await
29 }
30
31 #[derive(Clone, Debug, Serialize, Deserialize)]
32 pub struct NetworkedObject(pub String);
33
34 impl FromStr for NetworkedObject {
35 type Err = ();
36
37 fn from_str(s: &str) -> Result<Self, Self::Err> {
38 Ok(NetworkedObject(s.to_string()))
39 }
40 }
41
42 impl Display for NetworkedObject {
43 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
44 f.write_str(&self.0)
45 }
46 }
47
48 impl GiteratedObject for NetworkedObject {
49 fn object_name() -> &'static str {
50 "networked_object"
51 }
52
53 fn from_object_str(_object_str: &str) -> Result<Self, Error> {
54 todo!()
55 }
56
57 fn home_uri(&self) -> String {
58 todo!()
59 }
60 }
61
62 #[derive(Clone, Debug, Serialize, Deserialize)]
63 pub struct NetworkedOperation {
64 pub name: String,
65 pub payload: Vec<u8>,
66 }
67
68 impl NetworkedOperation {
69 pub fn new(name: String, payload: Vec<u8>) -> Self {
70 Self { name, payload }
71 }
72 }
73
74 impl GiteratedOperation<NetworkedObject> for NetworkedOperation {
75 type Success = Vec<u8>;
76
77 type Failure = Vec<u8>;
78
79 fn operation_name() -> &'static str {
80 "networked_operation"
81 }
82 }
83
84 /// Handler which will attempt to resolve any operation that doesn't resolve locally
85 /// against a remote instance.
86 pub async fn try_handle_with_remote(
87 state: ProtocolState,
88 object: Object,
89 operation: Operation,
90 _runtime: RuntimeHandle,
91 ) -> Result<Success, OperationError<Failure>> {
92 // if object.is::<NetworkedObject>() {
93 // return Err(OperationError::Unhandled);
94 // }
95 // trace!(
96 // "Try handling object operation {}::{} with remote",
97 // object.kind(),
98 // operation.kind().operation_name
99 // );
100 // TODO:
101 // Ideally we support pass-through on object types that aren't used locally.
102 // For now, we aren't worrying about that.
103 // let object_meta = object.vtable();
104
105 let operation_meta = operation.vtable();
106
107 // trace!(
108 // "Serializing with {}::{}",
109 // operation.kind().object_name,
110 // operation.kind().operation_name
111 // );
112
113 let object_home_uri = object.home_uri();
114
115 if let Some(home_uri) = state.home_uri {
116 if home_uri == object_home_uri {
117 // This isn't a remote request, requests aren't supposed to hit this layer
118 // if they're not remote.
119 // warn!("Try handling object operation {}::{}, resolved object home uri as local home uri. This is a bug.", object.kind(),
120 // operation.kind().operation_name);
121
122 return Err(OperationError::Unhandled);
123 }
124 }
125
126 // trace!(
127 // "Handling object operation {}::{} sending payload",
128 // object.kind(),
129 // operation.kind().operation_name
130 // );
131
132 // let object = NetworkedObject(unsafe { (object_meta.to_str)(object).as_ref().to_string() });
133
134 let object = todo!();
135
136 let payload = operation.serialize();
137
138 let operation = NetworkedOperation::new(operation.operation_kind().to_string(), payload);
139
140 // let authenticated = Authenticated::new(object, operation);
141
142 let message = GiteratedMessage {
143 object,
144 operation: NetworkedOperation::operation_name().to_string(),
145 payload: operation,
146 };
147
148 let authenticated = Authenticated::new(message);
149
150 let mut socket: WebSocketStream<MaybeTlsStream<TcpStream>> = connect_to(
151 &Instance::from_str(&object_home_uri).unwrap(),
152 &Some(("127.0.0.1:1111").parse().unwrap()),
153 )
154 .await
155 .unwrap();
156
157 // TODO AUTH
158
159 let result: Result<Vec<u8>, OperationError<Vec<u8>>> =
160 send_expect(&mut socket, authenticated).await;
161
162 match result {
163 Ok(success) => {
164 let success = unsafe { operation_meta.deserialize_success(&success) }
165 .map_err(|e| e.into_internal())?;
166
167 Ok(success)
168 }
169 Err(err) => Err(match err {
170 OperationError::Operation(failure) => {
171 let failure = unsafe { operation_meta.deserialize_failure(&failure) }
172 .map_err(|e| e.into_internal())?;
173
174 OperationError::Operation(failure)
175 }
176 OperationError::Internal(internal) => OperationError::Internal(internal),
177 OperationError::Unhandled => OperationError::Unhandled,
178 }),
179 }
180 }
181
182 type Socket = WebSocketStream<MaybeTlsStream<TcpStream>>;
183
184 async fn connect_to(
185 instance: &Instance,
186
187 socket_addr: &Option<SocketAddr>,
188 ) -> Result<Socket, Error> {
189 if let Some(addr) = socket_addr {
190 info!(
191 "Connecting to {}",
192 format!("ws://{}/.giterated/daemon/", addr)
193 );
194
195 let (websocket, _response) =
196 connect_async(&format!("ws://{}/.giterated/daemon/", addr)).await?;
197
198 info!("Connection established with {}", addr);
199
200 Ok(websocket)
201 } else {
202 info!(
203 "Connecting to {}",
204 format!("wss://{}/.giterated/daemon/", instance.0)
205 );
206
207 let (websocket, _response) =
208 connect_async(&format!("wss://{}/.giterated/daemon/", instance.0)).await?;
209
210 info!("Connection established with {}", instance.0);
211
212 Ok(websocket)
213 }
214 }
215
216 async fn send_expect<O: GiteratedObject, D: GiteratedOperation<O>>(
217 socket: &mut Socket,
218 message: Authenticated<O, D>,
219 ) -> Result<Vec<u8>, OperationError<Vec<u8>>> {
220 let payload = bincode::serialize(&message.into_payload()).unwrap();
221
222 socket.send(Message::Binary(payload)).await.unwrap();
223
224 while let Some(message) = socket.next().await {
225 let payload = match message.unwrap() {
226 Message::Binary(payload) => payload,
227
228 _ => {
229 continue;
230 }
231 };
232
233 let raw_result =
234 bincode::deserialize::<Result<Vec<u8>, NetworkOperationError<Vec<u8>>>>(&payload)
235 .map_err(|e| OperationError::Internal(Error::from(e)))?;
236
237 trace!(
238 "Received response for networked operation {}::{}.",
239 O::object_name(),
240 D::operation_name()
241 );
242
243 return match raw_result {
244 Ok(success) => Ok(success),
245 Err(err) => Err(match err {
246 NetworkOperationError::Operation(operation_error) => {
247 OperationError::Operation(operation_error)
248 }
249 NetworkOperationError::Internal => OperationError::Internal(RemoteError.into()),
250 NetworkOperationError::Unhandled => OperationError::Unhandled,
251 }),
252 };
253 }
254
255 panic!()
256 }
257