1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
//! Working interactive client implementation
use crate::{
errors::{Result, SdkError},
transport::{InputMessage, SubprocessTransport, Transport},
types::{ClaudeCodeOptions, ControlRequest, Message},
};
use futures::{Stream, StreamExt};
use std::sync::Arc;
use tokio::sync::Mutex;
use tokio_stream::wrappers::ReceiverStream;
use tracing::{debug, info};
/// Interactive client for stateful conversations with Claude
///
/// This is the recommended client for interactive use. It provides a clean API
/// that matches the Python SDK's functionality.
pub struct InteractiveClient {
transport: Arc<Mutex<Box<dyn Transport + Send>>>,
connected: bool,
}
impl InteractiveClient {
/// Create a new client
pub fn new(options: ClaudeCodeOptions) -> Result<Self> {
unsafe {
std::env::set_var("CLAUDE_CODE_ENTRYPOINT", "sdk-rust");
}
let transport: Box<dyn Transport + Send> = Box::new(SubprocessTransport::new(options)?);
Ok(Self {
transport: Arc::new(Mutex::new(transport)),
connected: false,
})
}
/// Connect to Claude
pub async fn connect(&mut self) -> Result<()> {
if self.connected {
return Ok(());
}
let mut transport = self.transport.lock().await;
transport.connect().await?;
drop(transport); // Release lock immediately
self.connected = true;
info!("Connected to Claude CLI");
Ok(())
}
/// Send a message and receive all messages until Result message
pub async fn send_and_receive(&mut self, prompt: String) -> Result<Vec<Message>> {
if !self.connected {
return Err(SdkError::InvalidState {
message: "Not connected".into(),
});
}
// Send message
{
let mut transport = self.transport.lock().await;
let message = InputMessage::user(prompt, "default".to_string());
transport.send_message(message).await?;
} // Lock released here
debug!("Message sent, waiting for response");
// Receive messages
let mut messages = Vec::new();
loop {
// Try to get a message
let msg_result = {
let mut transport = self.transport.lock().await;
let mut stream = transport.receive_messages();
stream.next().await
}; // Lock released here
// Process the message
if let Some(result) = msg_result {
match result {
Ok(msg) => {
debug!("Received: {:?}", msg);
let is_result = matches!(msg, Message::Result { .. });
messages.push(msg);
if is_result {
break;
}
}
Err(e) => return Err(e),
}
} else {
// No more messages, wait a bit
tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
}
}
Ok(messages)
}
/// Send a message without waiting for response
pub async fn send_message(&mut self, prompt: String) -> Result<()> {
if !self.connected {
return Err(SdkError::InvalidState {
message: "Not connected".into(),
});
}
let mut transport = self.transport.lock().await;
let message = InputMessage::user(prompt, "default".to_string());
transport.send_message(message).await?;
drop(transport);
debug!("Message sent");
Ok(())
}
/// Receive messages until Result message (convenience method like Python SDK)
pub async fn receive_response(&mut self) -> Result<Vec<Message>> {
if !self.connected {
return Err(SdkError::InvalidState {
message: "Not connected".into(),
});
}
let mut messages = Vec::new();
loop {
// Try to get a message
let msg_result = {
let mut transport = self.transport.lock().await;
let mut stream = transport.receive_messages();
stream.next().await
}; // Lock released here
// Process the message
if let Some(result) = msg_result {
match result {
Ok(msg) => {
debug!("Received: {:?}", msg);
let is_result = matches!(msg, Message::Result { .. });
messages.push(msg);
if is_result {
break;
}
}
Err(e) => return Err(e),
}
} else {
// No more messages, wait a bit
tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
}
}
Ok(messages)
}
/// Receive messages as a stream (streaming output support)
///
/// Returns a stream of messages that can be iterated over asynchronously.
/// This is similar to Python SDK's `receive_messages()` method.
///
/// # Example
///
/// ```rust,no_run
/// use cc_sdk::{InteractiveClient, ClaudeCodeOptions};
/// use futures::StreamExt;
///
/// #[tokio::main]
/// async fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let mut client = InteractiveClient::new(ClaudeCodeOptions::default())?;
/// client.connect().await?;
///
/// // Send a message
/// client.send_message("Hello!".to_string()).await?;
///
/// // Receive messages as a stream
/// let mut stream = client.receive_messages_stream().await;
/// while let Some(msg) = stream.next().await {
/// match msg {
/// Ok(message) => println!("Received: {:?}", message),
/// Err(e) => eprintln!("Error: {}", e),
/// }
/// }
///
/// Ok(())
/// }
/// ```
pub async fn receive_messages_stream(&mut self) -> impl Stream<Item = Result<Message>> + '_ {
// Create a channel for messages
let (tx, rx) = tokio::sync::mpsc::channel(100);
let transport = self.transport.clone();
// Spawn a task to receive messages from transport
tokio::spawn(async move {
let mut transport = transport.lock().await;
let mut stream = transport.receive_messages();
while let Some(result) = stream.next().await {
// Send each message through the channel
if tx.send(result).await.is_err() {
// Receiver dropped, stop sending
break;
}
}
});
// Return the receiver as a stream
ReceiverStream::new(rx)
}
/// Receive messages as an async iterator until a Result message
///
/// This is a convenience method that collects messages until a Result message
/// is received, similar to Python SDK's `receive_response()`.
pub async fn receive_response_stream(&mut self) -> impl Stream<Item = Result<Message>> + '_ {
// Create a stream that stops after Result message
async_stream::stream! {
let mut stream = self.receive_messages_stream().await;
while let Some(result) = stream.next().await {
match &result {
Ok(msg) => {
let is_result = matches!(msg, Message::Result { .. });
yield result;
if is_result {
break;
}
}
Err(_) => {
yield result;
break;
}
}
}
}
}
/// Send interrupt signal to cancel current operation
pub async fn interrupt(&mut self) -> Result<()> {
if !self.connected {
return Err(SdkError::InvalidState {
message: "Not connected".into(),
});
}
let mut transport = self.transport.lock().await;
let request = ControlRequest::Interrupt {
request_id: uuid::Uuid::new_v4().to_string(),
};
transport.send_control_request(request).await?;
drop(transport);
info!("Interrupt sent");
Ok(())
}
/// Disconnect
pub async fn disconnect(&mut self) -> Result<()> {
if !self.connected {
return Ok(());
}
let mut transport = self.transport.lock().await;
transport.disconnect().await?;
drop(transport);
self.connected = false;
info!("Disconnected from Claude CLI");
Ok(())
}
}