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|
use super::{
catch_error, extract_system_message, sse_stream, ClaudeClient, CompletionDetails, ExtraConfig,
ImageUrl, MessageContent, MessageContentPart, Model, ModelConfig, PromptAction, PromptKind,
SendData, SsMmessage, SseHandler,
};
use anyhow::{anyhow, bail, Result};
use reqwest::{Client as ReqwestClient, RequestBuilder};
use serde::Deserialize;
use serde_json::{json, Value};
const API_BASE: &str = "https://api.anthropic.com/v1/messages";
#[derive(Debug, Clone, Deserialize)]
pub struct ClaudeConfig {
pub name: Option<String>,
pub api_key: Option<String>,
#[serde(default)]
pub models: Vec<ModelConfig>,
pub extra: Option<ExtraConfig>,
}
impl ClaudeClient {
config_get_fn!(api_key, get_api_key);
pub const PROMPTS: [PromptAction<'static>; 1] =
[("api_key", "API Key:", true, PromptKind::String)];
fn request_builder(&self, client: &ReqwestClient, data: SendData) -> Result<RequestBuilder> {
let api_key = self.get_api_key().ok();
let body = claude_build_body(data, &self.model)?;
let url = API_BASE;
debug!("Claude Request: {url} {body}");
let mut builder = client.post(url).json(&body);
builder = builder.header("anthropic-version", "2023-06-01");
if let Some(api_key) = api_key {
builder = builder.header("x-api-key", api_key)
}
Ok(builder)
}
}
impl_client_trait!(
ClaudeClient,
claude_send_message,
claude_send_message_streaming
);
pub async fn claude_send_message(builder: RequestBuilder) -> Result<(String, CompletionDetails)> {
let res = builder.send().await?;
let status = res.status();
let data: Value = res.json().await?;
if !status.is_success() {
catch_error(&data, status.as_u16())?;
}
claude_extract_completion(&data)
}
pub async fn claude_send_message_streaming(
builder: RequestBuilder,
handler: &mut SseHandler,
) -> Result<()> {
let handle = |message: SsMmessage| -> Result<bool> {
let data: Value = serde_json::from_str(&message.data)?;
if let Some(typ) = data["type"].as_str() {
if typ == "content_block_delta" {
if let Some(text) = data["delta"]["text"].as_str() {
handler.text(text)?;
}
}
}
Ok(false)
};
sse_stream(builder, handle).await
}
pub fn claude_build_body(data: SendData, model: &Model) -> Result<Value> {
let SendData {
mut messages,
temperature,
top_p,
stream,
} = data;
let system_message = extract_system_message(&mut messages);
let mut network_image_urls = vec![];
let messages: Vec<Value> = messages
.into_iter()
.map(|message| {
let role = message.role;
let content = match message.content {
MessageContent::Text(text) => vec![json!({"type": "text", "text": text})],
MessageContent::Array(list) => list
.into_iter()
.map(|item| match item {
MessageContentPart::Text { text } => json!({"type": "text", "text": text}),
MessageContentPart::ImageUrl {
image_url: ImageUrl { url },
} => {
if let Some((mime_type, data)) = url
.strip_prefix("data:")
.and_then(|v| v.split_once(";base64,"))
{
json!({
"type": "image",
"source": {
"type": "base64",
"media_type": mime_type,
"data": data,
}
})
} else {
network_image_urls.push(url.clone());
json!({ "url": url })
}
}
})
.collect(),
};
json!({ "role": role, "content": content })
})
.collect();
if !network_image_urls.is_empty() {
bail!(
"The model does not support network images: {:?}",
network_image_urls
);
}
let mut body = json!({
"model": &model.name,
"messages": messages,
});
if let Some(v) = system_message {
body["system"] = v.into();
}
if let Some(v) = model.max_tokens_param() {
body["max_tokens"] = v.into();
}
if let Some(v) = temperature {
body["temperature"] = v.into();
}
if let Some(v) = top_p {
body["top_p"] = v.into();
}
if stream {
body["stream"] = true.into();
}
Ok(body)
}
pub fn claude_extract_completion(data: &Value) -> Result<(String, CompletionDetails)> {
let text = data["content"][0]["text"]
.as_str()
.ok_or_else(|| anyhow!("Invalid response data: {data}"))?;
let details = CompletionDetails {
id: data["id"].as_str().map(|v| v.to_string()),
input_tokens: data["usage"]["input_tokens"].as_u64(),
output_tokens: data["usage"]["output_tokens"].as_u64(),
};
Ok((text.to_string(), details))
}
|
