diff --git a/Cargo.lock b/Cargo.lock index 1acdf4e..c3b1ca9 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1779,6 +1779,12 @@ dependencies = [ "libc", ] +[[package]] +name = "memo-map" +version = "0.3.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "374c335b2df19e62d4cb323103473cbc6510980253119180de862d89184f6a83" + [[package]] name = "memoffset" version = "0.8.0" @@ -1804,6 +1810,17 @@ dependencies = [ "unicase", ] +[[package]] +name = "minijinja" +version = "1.0.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "80084fa3099f58b7afab51e5f92e24c2c2c68dcad26e96ad104bd6011570461d" +dependencies = [ + "memo-map", + "self_cell", + "serde", +] + [[package]] name = "minimal-lexical" version = "0.2.1" @@ -2790,6 +2807,12 @@ dependencies = [ "libc", ] +[[package]] +name = "self_cell" +version = "1.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4c309e515543e67811222dbc9e3dd7e1056279b782e1dacffe4242b718734fb6" + [[package]] name = "serde" version = "1.0.171" @@ -3078,6 +3101,7 @@ dependencies = [ "lazy_static", "llama-cpp-bindings", "mime_guess", + "minijinja", "nvml-wrapper", "opentelemetry", "opentelemetry-otlp", diff --git a/clients/tabby-playground/components/chat.tsx b/clients/tabby-playground/components/chat.tsx index 21113d4..2405191 100644 --- a/clients/tabby-playground/components/chat.tsx +++ b/clients/tabby-playground/components/chat.tsx @@ -39,9 +39,6 @@ export function Chat({ id, initialMessages, className }: ChatProps) { } } }) - if (messages.length > 2) { - setMessages(messages.slice(messages.length - 2, messages.length)) - } return ( <>
diff --git a/clients/tabby-playground/lib/hooks/use-patch-fetch.ts b/clients/tabby-playground/lib/hooks/use-patch-fetch.ts index 8f85df2..4e3e624 100644 --- a/clients/tabby-playground/lib/hooks/use-patch-fetch.ts +++ b/clients/tabby-playground/lib/hooks/use-patch-fetch.ts @@ -1,5 +1,6 @@ import { type Message } from 'ai/react' -import { CohereStream, StreamingTextResponse } from 'ai' +import { StreamingTextResponse } from 'ai' +import { TabbyStream } from '@/lib/tabby-stream' import { useEffect } from 'react' const serverUrl = @@ -15,25 +16,17 @@ export function usePatchFetch() { } const { messages } = JSON.parse(options!.body as string) - const res = await fetch(`${serverUrl}/v1beta/generate_stream`, { + const res = await fetch(`${serverUrl}/v1beta/chat/completions`, { ...options, method: 'POST', headers: { 'Content-Type': 'application/json' }, - body: JSON.stringify({ - prompt: messagesToPrompt(messages) - }) }) - const stream = CohereStream(res, undefined) + const stream = TabbyStream(res, undefined) return new StreamingTextResponse(stream) } }, []) } -function messagesToPrompt(messages: Message[]) { - const instruction = messages[messages.length - 1].content - const prompt = `Below is an instruction that describes a task. Write a response that appropriately completes the request.\n\n### Instruction:\n${instruction}\n\n### Response:` - return prompt -} diff --git a/clients/tabby-playground/lib/tabby-stream.ts b/clients/tabby-playground/lib/tabby-stream.ts new file mode 100644 index 0000000..c0423f3 --- /dev/null +++ b/clients/tabby-playground/lib/tabby-stream.ts @@ -0,0 +1,71 @@ +import { + type AIStreamCallbacksAndOptions, + createCallbacksTransformer, + createStreamDataTransformer +} from 'ai'; + +const utf8Decoder = new TextDecoder('utf-8'); + +async function processLines( + lines: string[], + controller: ReadableStreamDefaultController, +) { + for (const line of lines) { + const { content } = JSON.parse(line); + controller.enqueue(content); + } +} + +async function readAndProcessLines( + reader: ReadableStreamDefaultReader, + controller: ReadableStreamDefaultController, +) { + let segment = ''; + + while (true) { + const { value: chunk, done } = await reader.read(); + if (done) { + break; + } + + segment += utf8Decoder.decode(chunk, { stream: true }); + + const linesArray = segment.split(/\r\n|\n|\r/g); + segment = linesArray.pop() || ''; + + await processLines(linesArray, controller); + } + + if (segment) { + const linesArray = [segment]; + await processLines(linesArray, controller); + } + + controller.close(); +} + +function createParser(res: Response) { + const reader = res.body?.getReader(); + + return new ReadableStream({ + async start(controller): Promise { + if (!reader) { + controller.close(); + return; + } + + await readAndProcessLines(reader, controller); + }, + }); +} + +export function TabbyStream( + reader: Response, + callbacks?: AIStreamCallbacksAndOptions, +): ReadableStream { + return createParser(reader) + .pipeThrough(createCallbacksTransformer(callbacks)) + .pipeThrough( + createStreamDataTransformer(callbacks?.experimental_streamData), + ); +} diff --git a/crates/ctranslate2-bindings/src/lib.rs b/crates/ctranslate2-bindings/src/lib.rs index ffc07ea..25ce843 100644 --- a/crates/ctranslate2-bindings/src/lib.rs +++ b/crates/ctranslate2-bindings/src/lib.rs @@ -137,7 +137,7 @@ impl TextGeneration for CTranslate2Engine { let decoding = self .decoding_factory - .create(self.tokenizer.clone(), truncate_tokens(encoding.get_ids(), options.max_input_length), &options.stop_words, options.static_stop_words); + .create_incremental_decoding(self.tokenizer.clone(), truncate_tokens(encoding.get_ids(), options.max_input_length), options.stop_words); let (sender, mut receiver) = channel::(8); let context = InferenceContext::new(sender, decoding, cancel_for_inference); diff --git a/crates/http-api-bindings/src/fastchat.rs b/crates/http-api-bindings/src/fastchat.rs index c08ad01..f71e048 100644 --- a/crates/http-api-bindings/src/fastchat.rs +++ b/crates/http-api-bindings/src/fastchat.rs @@ -58,11 +58,8 @@ impl FastChatEngine { #[async_trait] impl TextGeneration for FastChatEngine { async fn generate(&self, prompt: &str, options: TextGenerationOptions) -> String { - let _stop_sequences: Vec = options - .static_stop_words - .iter() - .map(|x| x.to_string()) - .collect(); + let _stop_sequences: Vec = + options.stop_words.iter().map(|x| x.to_string()).collect(); let tokens: Vec<&str> = prompt.split("").collect(); let request = Request { diff --git a/crates/http-api-bindings/src/vertex_ai.rs b/crates/http-api-bindings/src/vertex_ai.rs index 6d83210..1d74b59 100644 --- a/crates/http-api-bindings/src/vertex_ai.rs +++ b/crates/http-api-bindings/src/vertex_ai.rs @@ -67,7 +67,7 @@ impl VertexAIEngine { impl TextGeneration for VertexAIEngine { async fn generate(&self, prompt: &str, options: TextGenerationOptions) -> String { let stop_sequences: Vec = options - .static_stop_words + .stop_words .iter() .map(|x| x.to_string()) // vertex supports at most 5 stop sequence. diff --git a/crates/llama-cpp-bindings/src/engine.cc b/crates/llama-cpp-bindings/src/engine.cc index 0b335ae..abcaee0 100644 --- a/crates/llama-cpp-bindings/src/engine.cc +++ b/crates/llama-cpp-bindings/src/engine.cc @@ -10,7 +10,8 @@ namespace llama { TextInferenceEngine::~TextInferenceEngine() {} namespace { -static size_t N_BATCH = 512; +static size_t N_BATCH = 512; // # per batch inference. +static size_t N_CTX = 4096; // # max kv history. template using owned = std::unique_ptr>; @@ -59,7 +60,7 @@ class TextInferenceEngineImpl : public TextInferenceEngine { return std::distance(logits, std::max_element(logits, logits + n_vocab)); } - bool eval(llama_token* data, size_t size, bool reset) { + void eval(llama_token* data, size_t size, bool reset) { if (reset) { n_past_ = 0; } @@ -76,12 +77,10 @@ class TextInferenceEngineImpl : public TextInferenceEngine { auto* ctx = ctx_.get(); llama_kv_cache_tokens_rm(ctx, n_past_, -1); if (llama_decode(ctx, batch_)) { - fprintf(stderr, "%s : failed to eval\n", __func__); - return false; + throw std::runtime_error("Failed to eval"); } n_past_ += size; - return true; } size_t n_past_; @@ -127,7 +126,7 @@ std::unique_ptr create_engine(rust::Str model_path) { } llama_context_params ctx_params = llama_context_default_params(); - ctx_params.n_ctx = 2048; + ctx_params.n_ctx = N_CTX; ctx_params.n_batch = N_BATCH; llama_context* ctx = llama_new_context_with_model(model, ctx_params); diff --git a/crates/llama-cpp-bindings/src/lib.rs b/crates/llama-cpp-bindings/src/lib.rs index af26ede..8e8e294 100644 --- a/crates/llama-cpp-bindings/src/lib.rs +++ b/crates/llama-cpp-bindings/src/lib.rs @@ -18,7 +18,7 @@ mod ffi { fn create_engine(model_path: &str) -> UniquePtr; fn start(self: Pin<&mut TextInferenceEngine>, input_token_ids: &[u32]); - fn step(self: Pin<&mut TextInferenceEngine>) -> u32; + fn step(self: Pin<&mut TextInferenceEngine>) -> Result; fn end(self: Pin<&mut TextInferenceEngine>); fn eos_token(&self) -> u32; @@ -75,10 +75,12 @@ impl TextGeneration for LlamaEngine { let input_token_ids = truncate_tokens(encoding.get_ids(), options.max_input_length); engine.as_mut().start(input_token_ids); - let mut decoding = self.decoding_factory.create(self.tokenizer.clone(), input_token_ids, &options.stop_words, options.static_stop_words); + let mut decoding = self.decoding_factory.create_incremental_decoding(self.tokenizer.clone(), input_token_ids, options.stop_words); let mut n_remains = options.max_decoding_length ; while n_remains > 0 { - let next_token_id = engine.as_mut().step(); + let Ok(next_token_id) = engine.as_mut().step() else { + panic!("Failed to eval"); + }; if next_token_id == eos_token { break; } diff --git a/crates/tabby-inference/src/decoding.rs b/crates/tabby-inference/src/decoding.rs index ac7a60a..78cb1a7 100644 --- a/crates/tabby-inference/src/decoding.rs +++ b/crates/tabby-inference/src/decoding.rs @@ -24,35 +24,16 @@ impl Default for DecodingFactory { } impl DecodingFactory { - pub fn create( + pub fn create_incremental_decoding( &self, tokenizer: Arc, input_token_ids: &[u32], - stop_words: &Vec, - static_stop_words: &'static Vec<&'static str>, + stop_words: &'static Vec<&'static str>, ) -> IncrementalDecoding { - IncrementalDecoding::new( - tokenizer, - vec![ - self.get_static_re(static_stop_words), - self.get_re(stop_words), - ] - .into_iter() - .flatten() - .collect(), - input_token_ids, - ) + IncrementalDecoding::new(tokenizer, self.get_re(stop_words), input_token_ids) } - fn get_re(&self, stop_words: &Vec) -> Option { - if !stop_words.is_empty() { - Some(create_stop_regex(stop_words)) - } else { - None - } - } - - fn get_static_re(&self, stop_words: &'static Vec<&'static str>) -> Option { + fn get_re(&self, stop_words: &'static Vec<&'static str>) -> Option { if stop_words.is_empty() { None } else { @@ -67,8 +48,8 @@ impl DecodingFactory { } } -fn create_stop_regex>(stop_words: &[T]) -> Regex { - let tokens: Vec = stop_words.iter().map(|x| reverse(x.as_ref())).collect(); +fn create_stop_regex(stop_words: &[&str]) -> Regex { + let tokens: Vec = stop_words.iter().map(|x| reverse(*x)).collect(); // (?m) enables multi-line matching mode. // \A means absolute begins of string. @@ -78,7 +59,7 @@ fn create_stop_regex>(stop_words: &[T]) -> Regex { pub struct IncrementalDecoding { tokenizer: Arc, - stop_re: Vec, + stop_re: Option, token_ids: Vec, prefix_offset: usize, @@ -88,7 +69,7 @@ pub struct IncrementalDecoding { } impl IncrementalDecoding { - pub fn new(tokenizer: Arc, stop_re: Vec, input_token_ids: &[u32]) -> Self { + pub fn new(tokenizer: Arc, stop_re: Option, input_token_ids: &[u32]) -> Self { let text = tokenizer .decode(input_token_ids, /* skip_special_token = */ true) .expect("Cannot decode token from tokenizer."); @@ -129,7 +110,8 @@ impl IncrementalDecoding { if !new_text.is_empty() { self.reversed_text = reverse(new_text) + &self.reversed_text; - for re in &self.stop_re { + + if let Some(re) = &self.stop_re { if re.find(&self.reversed_text).is_some() { return None; } diff --git a/crates/tabby-inference/src/lib.rs b/crates/tabby-inference/src/lib.rs index a36f4ad..495785e 100644 --- a/crates/tabby-inference/src/lib.rs +++ b/crates/tabby-inference/src/lib.rs @@ -16,10 +16,7 @@ pub struct TextGenerationOptions { pub sampling_temperature: f32, #[builder(default = "&EMPTY_STOP_WORDS")] - pub static_stop_words: &'static Vec<&'static str>, - - #[builder(default = "vec![]")] - pub stop_words: Vec, + pub stop_words: &'static Vec<&'static str>, } static EMPTY_STOP_WORDS: Vec<&'static str> = vec![]; diff --git a/crates/tabby/Cargo.toml b/crates/tabby/Cargo.toml index 7e1dc74..39b0230 100644 --- a/crates/tabby/Cargo.toml +++ b/crates/tabby/Cargo.toml @@ -39,6 +39,7 @@ http-api-bindings = { path = "../http-api-bindings" } futures = { workspace = true } async-stream = { workspace = true } axum-streams = { version = "0.9.1", features = ["json"] } +minijinja = { version = "1.0.8", features = ["loader"] } [target.'cfg(all(target_os="macos", target_arch="aarch64"))'.dependencies] llama-cpp-bindings = { path = "../llama-cpp-bindings" } diff --git a/crates/tabby/playground/404.html b/crates/tabby/playground/404.html index e046919..390f684 100644 --- a/crates/tabby/playground/404.html +++ b/crates/tabby/playground/404.html @@ -1 +1 @@ -404: This page could not be found.Tabby Playground
GitHub

404

This page could not be found.

\ No newline at end of file +404: This page could not be found.Tabby Playground
GitHub

404

This page could not be found.

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+ } + } +} + +#[derive(Serialize, Deserialize, ToSchema, Clone, Debug)] +#[schema(example=json!({ + "messages": [ + Message { role: "user".to_owned(), content: "What is tail recursion?".to_owned()}, + Message { role: "assistant".to_owned(), content: "It's a kind of optimization in compiler?".to_owned()}, + Message { role: "user".to_owned(), content: "Could you share more details?".to_owned()}, + ] +}))] +pub struct ChatCompletionRequest { + messages: Vec, +} + +#[derive(Serialize, Deserialize, ToSchema, Clone, Debug)] +pub struct Message { + role: String, + content: String, +} + +#[derive(Serialize, Deserialize, ToSchema, Clone, Debug)] +pub struct ChatCompletionChunk { + content: String, +} + +#[utoipa::path( + post, + path = "/v1beta/chat/completions", + request_body = ChatCompletionRequest, + operation_id = "chat_completions", + tag = "v1beta", + responses( + (status = 200, description = "Success", body = ChatCompletionChunk, content_type = "application/jsonstream"), + (status = 405, description = "When chat model is not specified, the endpoint will returns 405 Method Not Allowed"), + ) +)] +#[instrument(skip(state, request))] +pub async fn completions( + State(state): State>, + Json(request): Json, +) -> Response { + let (prompt, options) = parse_request(&state, request); + let s = stream! { + for await content in state.engine.generate_stream(&prompt, options).await { + yield ChatCompletionChunk { content } + } + }; + + StreamBodyAs::json_nl(s).into_response() +} + +fn parse_request( + state: &Arc, + request: ChatCompletionRequest, +) -> (String, TextGenerationOptions) { + let mut builder = TextGenerationOptionsBuilder::default(); + + builder + .max_input_length(2048) + .max_decoding_length(1920) + .sampling_temperature(0.1); + + ( + state.prompt_builder.build(&request.messages), + builder.build().unwrap(), + ) +} diff --git a/crates/tabby/src/serve/chat/prompt.rs b/crates/tabby/src/serve/chat/prompt.rs new file mode 100644 index 0000000..f4d9acf --- /dev/null +++ b/crates/tabby/src/serve/chat/prompt.rs @@ -0,0 +1,65 @@ +use minijinja::{context, Environment}; + +use super::Message; + +pub struct ChatPromptBuilder { + env: Environment<'static>, +} + +impl ChatPromptBuilder { + pub fn new(prompt_template: String) -> Self { + let mut env = Environment::new(); + env.add_function("raise_exception", |e: String| panic!("{}", e)); + env.add_template_owned("prompt", prompt_template) + .expect("Failed to compile template"); + + Self { env } + } + + pub fn build(&self, messages: &[Message]) -> String { + self.env + .get_template("prompt") + .unwrap() + .render(context!( + messages => messages + )) + .expect("Failed to evaluate") + } +} + +#[cfg(test)] +mod tests { + use super::*; + static PROMPT_TEMPLATE : &str = "{% for message in messages %}{% if (message['role'] == 'user') != (loop.index0 % 2 == 0) %}{{ raise_exception('Conversation roles must alternate user/assistant/user/assistant/...') }}{% endif %}{% if message['role'] == 'user' %}{{ '[INST] ' + message['content'] + ' [/INST]' }}{% elif message['role'] == 'assistant' %}{{ message['content'] + ' ' }}{% else %}{{ raise_exception('Only user and assistant roles are supported!') }}{% endif %}{% endfor %}"; + + #[test] + fn test_it_works() { + let builder = ChatPromptBuilder::new(PROMPT_TEMPLATE.to_owned()); + let messages = vec![ + Message { + role: "user".to_owned(), + content: "What is tail recursion?".to_owned(), + }, + Message { + role: "assistant".to_owned(), + content: "It's a kind of optimization in compiler?".to_owned(), + }, + Message { + role: "user".to_owned(), + content: "Could you share more details?".to_owned(), + }, + ]; + assert_eq!(builder.build(&messages), "[INST] What is tail recursion? [/INST]It's a kind of optimization in compiler? [INST] Could you share more details? [/INST]") + } + + #[test] + #[should_panic] + fn test_it_panic() { + let builder = ChatPromptBuilder::new(PROMPT_TEMPLATE.to_owned()); + let messages = vec![Message { + role: "system".to_owned(), + content: "system".to_owned(), + }]; + builder.build(&messages); + } +} diff --git a/crates/tabby/src/serve/completions.rs b/crates/tabby/src/serve/completions.rs index 26bcfe7..1334b87 100644 --- a/crates/tabby/src/serve/completions.rs +++ b/crates/tabby/src/serve/completions.rs @@ -71,7 +71,7 @@ pub struct CompletionResponse { ) )] #[instrument(skip(state, request))] -pub async fn completion( +pub async fn completions( State(state): State>, Json(request): Json, ) -> Result, StatusCode> { @@ -80,7 +80,7 @@ pub async fn completion( .max_input_length(1024 + 512) .max_decoding_length(128) .sampling_temperature(0.1) - .static_stop_words(get_stop_words(&language)) + .stop_words(get_stop_words(&language)) .build() .unwrap(); diff --git a/crates/tabby/src/serve/generate.rs b/crates/tabby/src/serve/generate.rs deleted file mode 100644 index 1ec3f1c..0000000 --- a/crates/tabby/src/serve/generate.rs +++ /dev/null @@ -1,94 +0,0 @@ -use std::sync::Arc; - -use async_stream::stream; -use axum::{extract::State, response::IntoResponse, Json}; -use axum_streams::StreamBodyAs; -use serde::{Deserialize, Serialize}; -use tabby_inference::{TextGeneration, TextGenerationOptions, TextGenerationOptionsBuilder}; -use tracing::instrument; -use utoipa::ToSchema; - -pub struct GenerateState { - engine: Arc>, -} - -impl GenerateState { - pub fn new(engine: Arc>) -> Self { - Self { engine } - } -} - -#[derive(Serialize, Deserialize, ToSchema, Clone, Debug)] -#[schema(example=json!({ - "prompt": "# Dijkstra'\''s shortest path algorithm in Python (4 spaces indentation) + complexity analysis:\n\n", -}))] -pub struct GenerateRequest { - prompt: String, - stop_words: Option>, -} - -#[derive(Serialize, Deserialize, ToSchema, Clone, Debug)] -pub struct GenerateResponse { - text: String, -} - -#[utoipa::path( - post, - path = "/v1beta/generate", - request_body = GenerateRequest, - operation_id = "generate", - tag = "v1beta", - responses( - (status = 200, description = "Success", body = GenerateResponse, content_type = "application/json"), - ) -)] -#[instrument(skip(state, request))] -pub async fn generate( - State(state): State>, - Json(request): Json, -) -> impl IntoResponse { - let (prompt, options) = parse_request(request); - Json(GenerateResponse { - text: state.engine.generate(&prompt, options).await, - }) -} - -#[utoipa::path( - post, - path = "/v1beta/generate_stream", - request_body = GenerateRequest, - operation_id = "generate_stream", - tag = "v1beta", - responses( - (status = 200, description = "Success", body = GenerateResponse, content_type = "application/jsonstream"), - ) -)] -#[instrument(skip(state, request))] -pub async fn generate_stream( - State(state): State>, - Json(request): Json, -) -> impl IntoResponse { - let (prompt, options) = parse_request(request); - let s = stream! { - for await text in state.engine.generate_stream(&prompt, options).await { - yield GenerateResponse { text } - } - }; - - StreamBodyAs::json_nl(s) -} - -fn parse_request(request: GenerateRequest) -> (String, TextGenerationOptions) { - let mut builder = TextGenerationOptionsBuilder::default(); - - builder - .max_input_length(1024) - .max_decoding_length(968) - .sampling_temperature(0.1); - - if let Some(stop_words) = request.stop_words { - builder.stop_words(stop_words); - }; - - (request.prompt, builder.build().unwrap()) -} diff --git a/crates/tabby/src/serve/health.rs b/crates/tabby/src/serve/health.rs index 401255a..65ff7b2 100644 --- a/crates/tabby/src/serve/health.rs +++ b/crates/tabby/src/serve/health.rs @@ -11,7 +11,7 @@ use utoipa::ToSchema; pub struct HealthState { model: String, #[serde(skip_serializing_if = "Option::is_none")] - instruct_model: Option, + chat_model: Option, device: String, compute_type: String, arch: String, @@ -32,7 +32,7 @@ impl HealthState { Self { model: args.model.clone(), - instruct_model: args.instruct_model.clone(), + chat_model: args.chat_model.clone(), device: args.device.to_string(), compute_type: args.compute_type.to_string(), arch: ARCH.to_string(), diff --git a/crates/tabby/src/serve/mod.rs b/crates/tabby/src/serve/mod.rs index 2ce45dc..aee696a 100644 --- a/crates/tabby/src/serve/mod.rs +++ b/crates/tabby/src/serve/mod.rs @@ -1,7 +1,7 @@ +mod chat; mod completions; mod engine; mod events; -mod generate; mod health; mod playground; @@ -42,15 +42,16 @@ Install following IDE / Editor extensions to get started with [Tabby](https://gi servers( (url = "https://playground.app.tabbyml.com", description = "Playground server"), ), - paths(events::log_event, completions::completion, generate::generate, generate::generate_stream, health::health), + paths(events::log_event, completions::completions, chat::completions, health::health), components(schemas( events::LogEventRequest, completions::CompletionRequest, completions::CompletionResponse, completions::Segments, completions::Choice, - generate::GenerateRequest, - generate::GenerateResponse, + chat::ChatCompletionRequest, + chat::Message, + chat::ChatCompletionChunk, health::HealthState, health::Version, )) @@ -105,14 +106,13 @@ pub enum ComputeType { #[derive(Args)] pub struct ServeArgs { - /// Model id for `/completion` API endpoint. + /// Model id for `/completions` API endpoint. #[clap(long)] model: String, - /// Model id for `/generate` and `/generate_stream` API endpoints. - /// If not set, `model` will be loaded for the purpose. + /// Model id for `/chat/completions` API endpoints. #[clap(long)] - instruct_model: Option, + chat_model: Option, #[clap(long, default_value_t = 8080)] port: u16, @@ -149,8 +149,8 @@ pub async fn main(config: &Config, args: &ServeArgs) { if args.device != Device::ExperimentalHttp { download_model(&args.model, &args.device).await; - if let Some(instruct_model) = &args.instruct_model { - download_model(instruct_model, &args.device).await; + if let Some(chat_model) = &args.chat_model { + download_model(chat_model, &args.device).await; } } else { warn!("HTTP device is unstable and does not comply with semver expectations.") @@ -160,12 +160,18 @@ pub async fn main(config: &Config, args: &ServeArgs) { let doc = add_localhost_server(ApiDoc::openapi(), args.port); let doc = add_proxy_server(doc, config.swagger.server_url.clone()); - let app = api_router(args, config) + let app = Router::new() + .merge(api_router(args, config)) .merge(SwaggerUi::new("/swagger-ui").url("/api-docs/openapi.json", doc)) - .route("/playground", routing::get(playground::handler)) - .route("/playground/*path", routing::get(playground::handler)) .fallback(fallback()); + let app = if args.chat_model.is_some() { + app.route("/playground", routing::get(playground::handler)) + .route("/playground/*path", routing::get(playground::handler)) + } else { + app + }; + let address = SocketAddr::from((Ipv4Addr::UNSPECIFIED, args.port)); info!("Listening at {}", address); @@ -177,15 +183,26 @@ pub async fn main(config: &Config, args: &ServeArgs) { } fn api_router(args: &ServeArgs, config: &Config) -> Router { - let (engine, prompt_template) = create_engine(&args.model, args); - let engine = Arc::new(engine); - let instruct_engine = if let Some(instruct_model) = &args.instruct_model { - Arc::new(create_engine(instruct_model, args).0) - } else { - engine.clone() + let completion_state = { + let (engine, prompt_template) = create_engine(&args.model, args); + let engine = Arc::new(engine); + let state = completions::CompletionState::new(engine.clone(), prompt_template, config); + Arc::new(state) }; - Router::new() + let chat_state = if let Some(chat_model) = &args.chat_model { + let (engine, prompt_template) = create_engine(chat_model, args); + let Some(prompt_template) = prompt_template else { + panic!("Chat model requires specifying prompt template"); + }; + let engine = Arc::new(engine); + let state = chat::ChatState::new(engine, prompt_template); + Some(Arc::new(state)) + } else { + None + }; + + let router = Router::new() .route("/v1/events", routing::post(events::log_event)) .route( "/v1/health", @@ -193,22 +210,19 @@ fn api_router(args: &ServeArgs, config: &Config) -> Router { ) .route( "/v1/completions", - routing::post(completions::completion).with_state(Arc::new( - completions::CompletionState::new(engine.clone(), prompt_template, config), - )), - ) - .route( - "/v1beta/generate", - routing::post(generate::generate).with_state(Arc::new(generate::GenerateState::new( - instruct_engine.clone(), - ))), - ) - .route( - "/v1beta/generate_stream", - routing::post(generate::generate_stream).with_state(Arc::new( - generate::GenerateState::new(instruct_engine.clone()), - )), + routing::post(completions::completions).with_state(completion_state), + ); + + let router = if let Some(chat_state) = chat_state { + router.route( + "/v1beta/chat/completions", + routing::post(chat::completions).with_state(chat_state), ) + } else { + router + }; + + router .layer(CorsLayer::permissive()) .layer(opentelemetry_tracing_layer()) }