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307 lines
9.1 KiB
Rust
307 lines
9.1 KiB
Rust
use super::{
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maybe_catch_error, message::*, sse_stream, Client, CompletionDetails, ExtraConfig, Model,
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ModelConfig, PromptType, QianwenClient, SendData, SsMmessage, SseHandler,
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};
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use crate::utils::{sha256sum, PromptKind};
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use anyhow::{anyhow, bail, Context, Result};
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use async_trait::async_trait;
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use base64::{engine::general_purpose::STANDARD, Engine};
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use reqwest::{
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multipart::{Form, Part},
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Client as ReqwestClient, RequestBuilder,
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};
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use serde::Deserialize;
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use serde_json::{json, Value};
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use std::borrow::BorrowMut;
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const API_URL: &str =
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"https://dashscope.aliyuncs.com/api/v1/services/aigc/text-generation/generation";
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const API_URL_VL: &str =
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"https://dashscope.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation";
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#[derive(Debug, Clone, Deserialize, Default)]
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pub struct QianwenConfig {
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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 QianwenClient {
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config_get_fn!(api_key, get_api_key);
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pub const PROMPTS: [PromptType<'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()?;
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let stream = data.stream;
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let is_vl = self.is_vl();
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let url = match is_vl {
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true => API_URL_VL,
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false => API_URL,
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};
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let (body, has_upload) = build_body(data, &self.model, is_vl)?;
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debug!("Qianwen Request: {url} {body}");
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let mut builder = client.post(url).bearer_auth(api_key).json(&body);
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if stream {
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builder = builder.header("X-DashScope-SSE", "enable");
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}
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if has_upload {
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builder = builder.header("X-DashScope-OssResourceResolve", "enable");
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}
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Ok(builder)
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}
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fn is_vl(&self) -> bool {
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self.model.name.starts_with("qwen-vl")
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}
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}
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#[async_trait]
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impl Client for QianwenClient {
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client_common_fns!();
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async fn send_message_inner(
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&self,
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client: &ReqwestClient,
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mut data: SendData,
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) -> Result<(String, CompletionDetails)> {
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let api_key = self.get_api_key()?;
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patch_messages(&self.model.name, &api_key, &mut data.messages).await?;
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let builder = self.request_builder(client, data)?;
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send_message(builder, self.is_vl()).await
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}
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async fn send_message_streaming_inner(
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&self,
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client: &ReqwestClient,
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handler: &mut SseHandler,
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mut data: SendData,
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) -> Result<()> {
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let api_key = self.get_api_key()?;
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patch_messages(&self.model.name, &api_key, &mut data.messages).await?;
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let builder = self.request_builder(client, data)?;
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send_message_streaming(builder, handler, self.is_vl()).await
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}
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}
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async fn send_message(builder: RequestBuilder, is_vl: bool) -> Result<(String, CompletionDetails)> {
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let data: Value = builder.send().await?.json().await?;
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maybe_catch_error(&data)?;
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extract_completion_text(&data, is_vl)
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}
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async fn send_message_streaming(
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builder: RequestBuilder,
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handler: &mut SseHandler,
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is_vl: bool,
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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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maybe_catch_error(&data)?;
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if is_vl {
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if let Some(text) =
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data["output"]["choices"][0]["message"]["content"][0]["text"].as_str()
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{
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handler.text(text)?;
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}
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} else if let Some(text) = data["output"]["text"].as_str() {
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handler.text(text)?;
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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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fn build_body(data: SendData, model: &Model, is_vl: bool) -> Result<(Value, bool)> {
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let SendData {
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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 mut has_upload = false;
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let input = if is_vl {
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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!({"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!({"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 url.starts_with("oss:") {
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has_upload = true;
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}
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json!({"image": url})
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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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json!({
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"messages": messages,
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})
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} else {
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json!({
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"messages": messages,
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})
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};
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let mut parameters = json!({});
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if stream {
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parameters["incremental_output"] = true.into();
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}
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if let Some(v) = model.max_output_tokens {
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parameters["max_tokens"] = v.into();
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}
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if let Some(v) = temperature {
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parameters["temperature"] = v.into();
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}
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if let Some(v) = top_p {
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parameters["top_p"] = v.into();
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}
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let body = json!({
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"model": &model.name,
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"input": input,
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"parameters": parameters
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});
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Ok((body, has_upload))
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}
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fn extract_completion_text(data: &Value, is_vl: bool) -> Result<(String, CompletionDetails)> {
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let err = || anyhow!("Invalid response data: {data}");
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let text = if is_vl {
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data["output"]["choices"][0]["message"]["content"][0]["text"]
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.as_str()
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.ok_or_else(err)?
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} else {
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data["output"]["text"].as_str().ok_or_else(err)?
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};
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let details = CompletionDetails {
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id: data["request_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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/// Patch messsages, upload embedded images to oss
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async fn patch_messages(model: &str, api_key: &str, messages: &mut Vec<Message>) -> Result<()> {
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for message in messages {
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if let MessageContent::Array(list) = message.content.borrow_mut() {
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for item in list {
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if let MessageContentPart::ImageUrl {
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image_url: ImageUrl { url },
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} = item
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{
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if url.starts_with("data:") {
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*url = upload(model, api_key, url)
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.await
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.with_context(|| "Failed to upload embedded image to oss")?;
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}
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}
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}
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}
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}
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Ok(())
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}
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#[derive(Debug, Deserialize)]
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struct Policy {
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data: PolicyData,
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}
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#[derive(Debug, Deserialize)]
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struct PolicyData {
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policy: String,
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signature: String,
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upload_dir: String,
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upload_host: String,
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oss_access_key_id: String,
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x_oss_object_acl: String,
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x_oss_forbid_overwrite: String,
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}
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/// Upload image to dashscope
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async fn upload(model: &str, api_key: &str, url: &str) -> Result<String> {
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let (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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.ok_or_else(|| anyhow!("Invalid image url"))?;
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let mut name = sha256sum(data);
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if let Some(ext) = mime_type.strip_prefix("image/") {
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name.push('.');
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name.push_str(ext);
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}
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let data = STANDARD.decode(data)?;
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let client = reqwest::Client::new();
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let policy: Policy = client
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.get(format!(
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"https://dashscope.aliyuncs.com/api/v1/uploads?action=getPolicy&model={model}"
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))
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.header("Authorization", format!("Bearer {api_key}"))
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.send()
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.await?
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.json()
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.await?;
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let PolicyData {
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policy,
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signature,
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upload_dir,
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upload_host,
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oss_access_key_id,
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x_oss_object_acl,
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x_oss_forbid_overwrite,
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..
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} = policy.data;
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let key = format!("{upload_dir}/{name}");
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let file = Part::bytes(data).file_name(name).mime_str(mime_type)?;
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let form = Form::new()
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.text("OSSAccessKeyId", oss_access_key_id)
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.text("Signature", signature)
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.text("policy", policy)
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.text("key", key.clone())
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.text("x-oss-object-acl", x_oss_object_acl)
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.text("x-oss-forbid-overwrite", x_oss_forbid_overwrite)
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.text("success_action_status", "200")
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.text("x-oss-content-type", mime_type.to_string())
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.part("file", file);
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let res = client.post(upload_host).multipart(form).send().await?;
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let status = res.status();
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if res.status() != 200 {
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let text = res.text().await?;
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bail!("Invalid response data: {text} (status: {status})")
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}
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Ok(format!("oss://{key}"))
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}
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