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
|
use crate::config::SharedConfig;
use crate::repl::{ReplyStreamHandler, SharedAbortSignal};
use anyhow::{anyhow, Context, Result};
use eventsource_stream::Eventsource;
use futures_util::StreamExt;
use reqwest::{Client, Proxy, RequestBuilder};
use serde_json::{json, Value};
use std::time::Duration;
use tokio::runtime::Runtime;
use tokio::time::sleep;
const CONNECT_TIMEOUT: Duration = Duration::from_secs(10);
const API_URL: &str = "https://api.openai.com/v1/chat/completions";
const MODEL: &str = "gpt-3.5-turbo";
#[derive(Debug)]
pub struct ChatGptClient {
config: SharedConfig,
runtime: Runtime,
}
impl ChatGptClient {
pub fn init(config: SharedConfig) -> Result<Self> {
let runtime = init_runtime()?;
let s = Self { config, runtime };
let _ = s.build_client()?; // check error
Ok(s)
}
pub fn send_message(&self, input: &str) -> Result<String> {
self.runtime.block_on(async {
self.send_message_inner(input)
.await
.with_context(|| "Failed to send message")
})
}
pub fn send_message_streaming(
&self,
input: &str,
handler: &mut ReplyStreamHandler,
) -> Result<()> {
async fn watch_abort(abort: SharedAbortSignal) {
loop {
if abort.aborted() {
break;
}
sleep(Duration::from_millis(100)).await;
}
}
let abort = handler.get_abort();
self.runtime.block_on(async {
tokio::select! {
ret = self.send_message_streaming_inner(input, handler) => {
handler.done()?;
ret.with_context(|| "Failed to send message streaming")
}
_ = watch_abort(abort.clone()) => {
handler.done()?;
Ok(())
},
_ = tokio::signal::ctrl_c() => {
abort.set_ctrlc();
Ok(())
}
}
})
}
async fn send_message_inner(&self, content: &str) -> Result<String> {
if self.config.lock().dry_run {
return Ok(self.config.lock().echo_messages(content));
}
let builder = self.request_builder(content, false)?;
let data: Value = builder.send().await?.json().await?;
let output = data["choices"][0]["message"]["content"]
.as_str()
.ok_or_else(|| anyhow!("Unexpected response {data}"))?;
Ok(output.to_string())
}
async fn send_message_streaming_inner(
&self,
content: &str,
handler: &mut ReplyStreamHandler,
) -> Result<()> {
if self.config.lock().dry_run {
handler.text(&self.config.lock().echo_messages(content))?;
return Ok(());
}
let builder = self.request_builder(content, true)?;
let mut stream = builder.send().await?.bytes_stream().eventsource();
let mut virgin = true;
while let Some(part) = stream.next().await {
let chunk = part?.data;
if chunk == "[DONE]" {
break;
} else {
let data: Value = serde_json::from_str(&chunk)?;
let text = data["choices"][0]["delta"]["content"]
.as_str()
.unwrap_or_default();
if text.is_empty() {
continue;
}
if virgin {
virgin = false;
if text == "\n\n" {
continue;
}
}
handler.text(text)?;
}
}
Ok(())
}
fn build_client(&self) -> Result<Client> {
let mut builder = Client::builder();
if let Some(proxy) = self.config.lock().proxy.as_ref() {
builder = builder.proxy(Proxy::all(proxy).with_context(|| "Invalid config.proxy")?);
}
let client = builder
.connect_timeout(CONNECT_TIMEOUT)
.build()
.with_context(|| "Failed to build http client")?;
Ok(client)
}
fn request_builder(&self, content: &str, stream: bool) -> Result<RequestBuilder> {
let messages = self.config.lock().build_messages(content);
let mut body = json!({
"model": MODEL,
"messages": messages,
});
if let Some(v) = self.config.lock().get_temperature() {
body.as_object_mut()
.and_then(|m| m.insert("temperature".into(), json!(v)));
}
if stream {
body.as_object_mut()
.and_then(|m| m.insert("stream".into(), json!(true)));
}
let builder = self
.build_client()?
.post(API_URL)
.bearer_auth(&self.config.lock().api_key)
.json(&body);
Ok(builder)
}
}
fn init_runtime() -> Result<Runtime> {
tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.with_context(|| "Failed to init tokio")
}
|
