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