[router] Move all protocols to spec.rs file (#9519)

sgl-router/src/routers/mod.rs

@@ -9,10 +9,7 @@ use axum::{
 };
 use std::fmt::Debug;
 
-use crate::protocols::{
-    generate::GenerateRequest,
-    openai::{chat::ChatCompletionRequest, completions::CompletionRequest},
-};
+use crate::protocols::spec::{ChatCompletionRequest, CompletionRequest, GenerateRequest};
 
 pub mod factory;
 pub mod header_utils;

sgl-router/src/routers/pd_router.rs

@@ -12,13 +12,9 @@ use crate::core::{
 };
 use crate::metrics::RouterMetrics;
 use crate::policies::LoadBalancingPolicy;
-use crate::protocols::{
-    common::StringOrArray,
-    generate::GenerateRequest,
-    openai::{
-        chat::{ChatCompletionRequest, ChatMessage, UserMessageContent},
-        completions::CompletionRequest,
-    },
+use crate::protocols::spec::{
+    ChatCompletionRequest, ChatMessage, CompletionRequest, GenerateRequest, StringOrArray,
+    UserMessageContent,
 };
 use crate::routers::{RouterTrait, WorkerManagement};
 use async_trait::async_trait;

sgl-router/src/routers/router.rs

@@ -9,10 +9,8 @@ use crate::core::{
 };
 use crate::metrics::RouterMetrics;
 use crate::policies::LoadBalancingPolicy;
-use crate::protocols::{
-    common::GenerationRequest,
-    generate::GenerateRequest,
-    openai::{chat::ChatCompletionRequest, completions::CompletionRequest},
+use crate::protocols::spec::{
+    ChatCompletionRequest, CompletionRequest, GenerateRequest, GenerationRequest,
 };
 use crate::routers::{RouterTrait, WorkerManagement};
 use axum::{