use super::{
maybe_catch_error, message::*, sse_stream, Client, CompletionData, CompletionOutput,
ExtraConfig, Model, ModelData, ModelPatches, PromptAction, PromptKind, QianwenClient,
SseHandler, SseMmessage,
};
use crate::utils::{base64_decode, sha256};
use anyhow::{anyhow, bail, Context, Result};
use async_trait::async_trait;
use reqwest::{
multipart::{Form, Part},
Client as ReqwestClient, RequestBuilder,
};
use serde::Deserialize;
use serde_json::{json, Value};
use std::borrow::BorrowMut;
const API_URL: &str =
"https://dashscope.aliyuncs.com/api/v1/services/aigc/text-generation/generation";
const API_URL_VL: &str =
"https://dashscope.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation";
#[derive(Debug, Clone, Deserialize, Default)]
pub struct QianwenConfig {
pub name: Option<String>,
pub api_key: Option<String>,
#[serde(default)]
pub models: Vec<ModelData>,
pub patches: Option<ModelPatches>,
pub extra: Option<ExtraConfig>,
}
impl QianwenClient {
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: CompletionData,
) -> Result<RequestBuilder> {
let api_key = self.get_api_key()?;
let stream = data.stream;
let url = match self.model.supports_vision() {
true => API_URL_VL,
false => API_URL,
};
let (mut body, has_upload) = build_body(data, &self.model)?;
self.patch_request_body(&mut body);
debug!("Qianwen Request: {url} {body}");
let mut builder = client.post(url).bearer_auth(api_key).json(&body);
if stream {
builder = builder.header("X-DashScope-SSE", "enable");
}
if has_upload {
builder = builder.header("X-DashScope-OssResourceResolve", "enable");
}
Ok(builder)
}
}
#[async_trait]
impl Client for QianwenClient {
client_common_fns!();
async fn send_message_inner(
&self,
client: &ReqwestClient,
mut data: CompletionData,
) -> Result<CompletionOutput> {
let api_key = self.get_api_key()?;
patch_messages(self.model.name(), &api_key, &mut data.messages).await?;
let builder = self.request_builder(client, data)?;
send_message(builder, &self.model).await
}
async fn send_message_streaming_inner(
&self,
client: &ReqwestClient,
handler: &mut SseHandler,
mut data: CompletionData,
) -> Result<()> {
let api_key = self.get_api_key()?;
patch_messages(self.model.name(), &api_key, &mut data.messages).await?;
let builder = self.request_builder(client, data)?;
send_message_streaming(builder, handler, &self.model).await
}
}
async fn send_message(builder: RequestBuilder, model: &Model) -> Result<CompletionOutput> {
let data: Value = builder.send().await?.json().await?;
maybe_catch_error(&data)?;
debug!("non-stream-data: {data}");
extract_completion_text(&data, model)
}
async fn send_message_streaming(
builder: RequestBuilder,
handler: &mut SseHandler,
model: &Model,
) -> Result<()> {
let model_name = model.name();
let handle = |message: SseMmessage| -> Result<bool> {
let data: Value = serde_json::from_str(&message.data)?;
maybe_catch_error(&data)?;
debug!("stream-data: {data}");
if model_name == "qwen-long" {
if let Some(text) = data["output"]["choices"][0]["message"]["content"].as_str() {
handler.text(text)?;
}
} else if model.supports_vision() {
if let Some(text) =
data["output"]["choices"][0]["message"]["content"][0]["text"].as_str()
{
handler.text(text)?;
}
} else if let Some(text) = data["output"]["text"].as_str() {
handler.text(text)?;
}
Ok(false)
};
sse_stream(builder, handle).await
}
fn build_body(data: CompletionData, model: &Model) -> Result<(Value, bool)> {
let CompletionData {
messages,
temperature,
top_p,
functions: _,
stream,
} = data;
let mut has_upload = false;
let mut is_tool_call = false;
let input = if model.supports_vision() {
let messages: Vec<Value> = messages
.into_iter()
.map(|message| {
let role = message.role;
let content = match message.content {
MessageContent::Text(text) => vec![json!({"text": text})],
MessageContent::Array(list) => list
.into_iter()
.map(|item| match item {
MessageContentPart::Text { text } => json!({"text": text}),
MessageContentPart::ImageUrl {
image_url: ImageUrl { url },
} => {
if url.starts_with("oss:") {
has_upload = true;
}
json!({"image": url})
}
})
.collect(),
MessageContent::ToolResults(_) => {
is_tool_call = true;
vec![]
}
};
json!({ "role": role, "content": content })
})
.collect();
json!({
"messages": messages,
})
} else {
json!({
"messages": messages,
})
};
if is_tool_call {
bail!("The client does not support function calling",);
}
let mut parameters = json!({});
if stream {
parameters["incremental_output"] = true.into();
}
if let Some(v) = model.max_tokens_param() {
parameters["max_tokens"] = v.into();
}
if let Some(v) = temperature {
parameters["temperature"] = v.into();
}
if let Some(v) = top_p {
parameters["top_p"] = v.into();
}
let body = json!({
"model": &model.name(),
"input": input,
"parameters": parameters
});
Ok((body, has_upload))
}
fn extract_completion_text(data: &Value, model: &Model) -> Result<CompletionOutput> {
let err = || anyhow!("Invalid response data: {data}");
let text = if model.name() == "qwen-long" {
data["output"]["choices"][0]["message"]["content"]
.as_str()
.ok_or_else(err)?
} else if model.supports_vision() {
data["output"]["choices"][0]["message"]["content"][0]["text"]
.as_str()
.ok_or_else(err)?
} else {
data["output"]["text"].as_str().ok_or_else(err)?
};
let output = CompletionOutput {
text: text.to_string(),
tool_calls: vec![],
id: data["request_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(output)
}
async fn patch_messages(model: &str, api_key: &str, messages: &mut Vec<Message>) -> Result<()> {
for message in messages {
if let MessageContent::Array(list) = message.content.borrow_mut() {
for item in list {
if let MessageContentPart::ImageUrl {
image_url: ImageUrl { url },
} = item
{
if url.starts_with("data:") {
*url = upload(model, api_key, url)
.await
.with_context(|| "Failed to upload embedded image to oss")?;
}
}
}
}
}
Ok(())
}
#[derive(Debug, Deserialize)]
struct Policy {
data: PolicyData,
}
#[derive(Debug, Deserialize)]
struct PolicyData {
policy: String,
signature: String,
upload_dir: String,
upload_host: String,
oss_access_key_id: String,
x_oss_object_acl: String,
x_oss_forbid_overwrite: String,
}
async fn upload(model: &str, api_key: &str, url: &str) -> Result<String> {
let (mime_type, data) = url
.strip_prefix("data:")
.and_then(|v| v.split_once(";base64,"))
.ok_or_else(|| anyhow!("Invalid image url"))?;
let mut name = sha256(data);
if let Some(ext) = mime_type.strip_prefix("image/") {
name.push('.');
name.push_str(ext);
}
let data = base64_decode(data)?;
let client = reqwest::Client::new();
let policy: Policy = client
.get(format!(
"https://dashscope.aliyuncs.com/api/v1/uploads?action=getPolicy&model={model}"
))
.header("Authorization", format!("Bearer {api_key}"))
.send()
.await?
.json()
.await?;
let PolicyData {
policy,
signature,
upload_dir,
upload_host,
oss_access_key_id,
x_oss_object_acl,
x_oss_forbid_overwrite,
..
} = policy.data;
let key = format!("{upload_dir}/{name}");
let file = Part::bytes(data).file_name(name).mime_str(mime_type)?;
let form = Form::new()
.text("OSSAccessKeyId", oss_access_key_id)
.text("Signature", signature)
.text("policy", policy)
.text("key", key.clone())
.text("x-oss-object-acl", x_oss_object_acl)
.text("x-oss-forbid-overwrite", x_oss_forbid_overwrite)
.text("success_action_status", "200")
.text("x-oss-content-type", mime_type.to_string())
.part("file", file);
let res = client.post(upload_host).multipart(form).send().await?;
let status = res.status();
if !status.is_success() {
let text = res.text().await?;
bail!("Invalid response data: {text} (status: {status})")
}
Ok(format!("oss://{key}"))
}