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# -- Base
.*
!.gitignore
*.lock
*.lockb
*.log
# -- Rust
target/
# !Cargo.lock # commented by default
!.cargo/
# -- Safety net
dist/
out/
# Data Files
*.parquet
*.map
*.zip
*.gz
*.tar
*.tgz
*.vsix
# Videos
*.mov
*.mp4
*.webm
*.ogg
*.avi
# Images
*.icns
*.ico
*.jpeg
*.jpg
*.png
*.bmp
# -- Nodejs
node_modules/
!.mocharc.yaml
report.*.json
# -- Python
__pycache__/
# -- others
_*
# '_' in src dir, ok.
!**/src/**/_*
# Allows .env (make sure only dev info)
# !.env # Commented by default
# Allow vscode
# !.vscode # Commented by default

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[package]
name = "genai"
version = "0.0.1"
edition = "2021"
rust-version = "1.78"
license = "MIT OR Apache-2.0"
description = "Multiprovider generative AI client"
keywords = [
"generative-ai",
"library",
"openai",
"llama",
"ollama"
]
homepage = "https://github.com/jeremychone/rust-genai"
repository = "https://github.com/jeremychone/rust-genai"
[lints.rust]
unsafe_code = "forbid"
unused = { level = "allow", priority = -1 } # For exploratory dev.
[dependencies]
# -- Async
tokio = { version = "1", features = ["full"] }
futures = "0.3"
async-trait = "0.1"
tokio-stream = "0.1"
# -- Json
serde = { version = "1", features = ["derive"] }
serde_json = "1"
serde_with = { version = "3", features = ["macros"] }
# -- AI
async-openai = "0.21"
# -- Others
derive_more = {version = "1.0.0-beta", features = ["from"] }

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# genai - multi-ai provider gen-ai client
The goal of this library is to provide a common and ergonomic single API to many generative AI providers, such as OpenAI and Ollama.
**IMPORTANT 1** This is in development, `0.0.x` are not intended to work. Do not use at this point. Wait for `0.1.x` see below.
**IMPORTANT 2** This is not intended to be a replacement for [async-openai](https://crates.io/search?q=async-openai) and [ollama-rs](https://crates.io/crates/ollama-rs), but rather to tackle the simpler lowest common denominator of chat generation in a single API.
Scope for now:
- Focuses on OpenAI and Ollama, using [async-openai](https://crates.io/search?q=async-openai) and [ollama-rs](https://crates.io/crates/ollama-rs)
- For the `0.0.x` version, it is just code that might not even work. Don't waste your time.
- The `0.1.x` version will start to work, but the APIs will change in the patch version, not following semver strictly.
- Version `0.2.x` will follow semver more strictly.

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use genai::OpenAIClient;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
// create new client
let api_key = std::env::var("OPENAI_API_KEY")?;
let oa_client = OpenAIClient::from_api_key(api_key);
//
Ok(())
}

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// region: --- Modules
mod openai;
pub use openai::*;
// endregion: --- Modules
use crate::{ChatReq, ChatRes, ChatResStream, GenReq, GenRes, GenResStream, Result};
use async_trait::async_trait;
pub enum ClientKind {
Ollama,
Openai,
}
#[async_trait]
pub trait Client {
async fn list_models(&self) -> Result<Vec<String>>;
async fn exec_chat(&self, req: ChatReq) -> Result<ChatRes>;
async fn exec_chat_stream(&self, req: ChatReq) -> Result<ChatResStream>;
}

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// region: --- Modules
mod openai_impl;
use crate::Result;
use async_openai::config::OpenAIConfig as AsyncOpenAIConfig;
use async_openai::Client as AsyncOpenAIClient;
use std::sync::{Arc, Mutex};
// endregion: --- Modules
// region: --- Client
pub type AsyncOaClient = AsyncOpenAIClient<AsyncOpenAIConfig>;
#[derive(Clone)]
pub struct OpenAIClient {
conn: Arc<Mutex<AsyncOaClient>>,
}
// constructors
impl OpenAIClient {
pub fn new(config: OpenAIConfig) -> Result<Self> {
let config = AsyncOpenAIConfig::new().with_api_key(config.api_key);
let conn = Arc::new(Mutex::new(AsyncOpenAIClient::with_config(config)));
Ok(Self { conn })
}
pub fn from_api_key(api_key: String) -> Result<Self> {
let config = OpenAIConfig { api_key };
Self::new(config)
}
pub fn from_async_openai_client(async_client: AsyncOaClient) -> Self {
let conn = Arc::new(Mutex::new(async_client));
Self { conn }
}
// from config
pub fn from_async_openai_config(config: AsyncOpenAIConfig) -> Self {
let conn = Arc::new(Mutex::new(AsyncOpenAIClient::with_config(config)));
Self { conn }
}
}
// endregion: --- Client
// region: --- OpenAIConfig
pub struct OpenAIConfig {
api_key: String,
}
impl std::fmt::Debug for OpenAIConfig {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("OpenaiClientConfig").field("api_key", &"REDACTED").finish()
}
}
// endregion: --- OpenAIConfig

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use crate::client::openai::OpenAIClient;
use crate::ChatMsg;
use crate::ChatReq;
use crate::ChatRes;
use crate::ChatResStream;
use crate::ChatRole;
use crate::Client;
use crate::Result;
use crate::{GenReq, GenRes, GenResStream};
use async_openai::config::OpenAIConfig;
use async_openai::types::ChatCompletionRequestMessage;
use async_openai::types::ChatCompletionRequestUserMessage;
use async_openai::types::Role;
use async_trait::async_trait;
use std::sync::{Arc, Mutex};
#[async_trait]
impl Client for OpenAIClient {
async fn list_models(&self) -> Result<Vec<String>> {
Ok(vec![])
}
async fn exec_chat(&self, req: ChatReq) -> Result<ChatRes> {
let raw_client = self.conn.lock().unwrap();
let chat_client = raw_client.chat();
let model = req.model;
let raw_messages = req.messages.into_iter().map(ChatCompletionRequestMessage::from);
todo!()
}
async fn exec_chat_stream(&self, req: ChatReq) -> Result<ChatResStream> {
todo!()
}
}
// region: --- Types From
impl From<ChatRole> for Role {
fn from(chat_role: ChatRole) -> Self {
match chat_role {
ChatRole::System => Role::System,
ChatRole::User => Role::User,
ChatRole::Assistant => Role::Assistant,
ChatRole::Tool => Role::Tool,
// TODO: need to decide what to do with function
}
}
}
impl From<ChatMsg> for ChatCompletionRequestMessage {
fn from(chat_msg: ChatMsg) -> Self {
let role = chat_msg.role.into();
let content = chat_msg.content;
match chat_msg.extra {
None => ChatCompletionRequestUserMessage {
content: content.into(),
role,
name: None,
}
.into(),
_ => todo!("chat_msg other not supported yet"),
}
}
}
// endregion: --- Types From

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use derive_more::From;
pub type Result<T> = core::result::Result<T, Error>;
#[derive(Debug, From)]
pub enum Error {
// -- Externals
#[from]
Io(std::io::Error), // as example
}
// region: --- Error Boilerplate
impl core::fmt::Display for Error {
fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::result::Result<(), core::fmt::Error> {
write!(fmt, "{self:?}")
}
}
impl std::error::Error for Error {}
// endregion: --- Error Boilerplate

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// region: --- Modules
mod client;
mod error;
mod types;
pub use client::*;
pub use error::{Error, Result};
pub use types::*;
// endregion: --- Modules

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use crate::Result;
use futures::Stream;
use std::pin::Pin;
// region: --- Chat Request Types
#[derive(Debug)]
pub enum ChatRole {
System,
User,
Assistant,
Tool,
}
pub struct ChatReq {
pub model: String,
pub messages: Vec<ChatMsg>,
}
pub struct ChatMsg {
pub role: ChatRole,
pub content: String,
pub extra: Option<ChatMsgExtra>,
}
pub enum ChatMsgExtra {
Tool(ToolExtra),
}
pub struct ToolExtra {
tool_id: String,
}
// endregion: --- Chat Request Types
// region: --- ChatRes
#[derive(Debug, Clone)]
pub struct ChatRes {
pub response: String,
}
// endregion: --- ChatRes
// region: --- ChatResStream
pub type ChatResStream = Pin<Box<dyn Stream<Item = Result<ChatResChunks>>>>;
pub type ChatResChunks = Vec<ChatResChunk>;
pub struct ChatResChunk {
pub response: String,
}
// endregion: --- ChatResStream

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use crate::{OutFormat, Result};
use futures::Stream;
use std::pin::Pin;
// region: --- GenReq
#[derive(Debug)]
pub struct GenReq {
pub prompt: String,
pub inst: Option<String>,
pub out_format: Option<OutFormat>,
}
impl From<&str> for GenReq {
fn from(val: &str) -> Self {
Self {
prompt: val.to_string(),
inst: None,
out_format: None,
}
}
}
impl From<String> for GenReq {
fn from(val: String) -> Self {
Self {
prompt: val,
inst: None,
out_format: None,
}
}
}
impl From<&String> for GenReq {
fn from(val: &String) -> Self {
Self {
prompt: val.to_string(),
inst: None,
out_format: None,
}
}
}
// endregion: --- GenReq
// region: --- GenRes
#[derive(Debug, Clone)]
pub struct GenRes {
pub response: String,
}
// endregion: --- GenRes
// region: --- GenResStream
pub type GenResStream = Pin<Box<dyn Stream<Item = Result<GenResChunks>>>>;
pub type GenResChunks = Vec<GenResChunk>;
pub struct GenResChunk {
pub response: String,
}
// endregion: --- GenResStream

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// region: --- Modules
mod chat;
mod gen;
mod tool;
// -- Flatten
pub use chat::*;
pub use gen::*;
pub use tool::*;
// endregion: --- Modules
#[derive(Debug)]
pub enum OutFormat {
Text,
Json,
}

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use serde_json::Value;
#[allow(unused)] // For early development.
pub struct Tool {
fn_name: String,
fn_description: String,
params: Value,
}