[router]restructure protocol modules for better organization (#9321)

sgl-router/src/routers/router.rs

@@ -8,8 +8,12 @@ use crate::core::{
     RetryExecutor, Worker, WorkerFactory, WorkerType,
 };
 use crate::metrics::RouterMetrics;
-use crate::openai_api_types::{ChatCompletionRequest, CompletionRequest, GenerateRequest};
 use crate::policies::LoadBalancingPolicy;
+use crate::protocols::{
+    common::GenerationRequest,
+    generate::GenerateRequest,
+    openai::{chat::ChatCompletionRequest, completions::CompletionRequest},
+};
 use crate::routers::{RouterTrait, WorkerManagement};
 use axum::{
     body::Body,
@@ -453,9 +457,7 @@ impl Router {
         Some(available[idx].clone_worker())
     }
 
-    pub async fn route_typed_request<
-        T: crate::openai_api_types::GenerationRequest + serde::Serialize + Clone,
-    >(
+    pub async fn route_typed_request<T: GenerationRequest + serde::Serialize + Clone>(
         &self,
         headers: Option<&HeaderMap>,
         typed_req: &T,

sgl-router/src/server.rs

 use crate::config::RouterConfig;
 use crate::logging::{self, LoggingConfig};
 use crate::metrics::{self, PrometheusConfig};
-use crate::openai_api_types::{ChatCompletionRequest, CompletionRequest, GenerateRequest};
+use crate::protocols::{
+    generate::GenerateRequest,
+    openai::{chat::ChatCompletionRequest, completions::CompletionRequest},
+};
 use crate::routers::{RouterFactory, RouterTrait};
 use crate::service_discovery::{start_service_discovery, ServiceDiscoveryConfig};
 use axum::{

sgl-router/tests/benchmark_integration.rs

@@ -5,9 +5,13 @@
 
 use serde_json::{from_str, to_string, to_value};
 use sglang_router_rs::core::{BasicWorker, WorkerType};
-use sglang_router_rs::openai_api_types::{
-    ChatCompletionRequest, ChatMessage, CompletionRequest, GenerateParameters, GenerateRequest,
-    SamplingParams, StringOrArray, UserMessageContent,
+use sglang_router_rs::protocols::{
+    common::StringOrArray,
+    generate::{GenerateParameters, GenerateRequest, SamplingParams},
+    openai::{
+        chat::{ChatCompletionRequest, ChatMessage, UserMessageContent},
+        completions::CompletionRequest,
+    },
 };
 
 /// Create a default GenerateRequest for benchmarks with minimal fields set