[router] grpc router regular mode import cleanup (#10963)

sgl-router/src/routers/grpc/router.rs

@@ -12,19 +12,25 @@ use axum::{
 use tracing::{debug, error, info, warn};
 
 use crate::config::types::RetryConfig;
-use crate::core::{WorkerRegistry, WorkerType};
+use crate::core::{ConnectionMode, Worker, WorkerRegistry, WorkerType};
 use crate::grpc_client::{proto, SglangSchedulerClient};
 use crate::metrics::RouterMetrics;
 use crate::policies::PolicyRegistry;
+use crate::protocols::spec::ChatMessage;
 use crate::protocols::spec::{ChatCompletionRequest, StringOrArray};
+use crate::protocols::spec::{
+    CompletionRequest, EmbeddingRequest, GenerateRequest, RerankRequest, ResponsesGetParams,
+    ResponsesRequest, Tool, ToolChoice,
+};
 use crate::reasoning_parser::ParserFactory;
 use crate::routers::RouterTrait;
-use crate::tokenizer::traits::Tokenizer;
-use crate::tool_parser::ParserRegistry;
-use uuid::Uuid;
-
+use crate::server::AppContext;
 use crate::tokenizer::chat_template::{ChatTemplateContentFormat, ChatTemplateParams};
+use crate::tokenizer::traits::Tokenizer;
+use crate::tokenizer::HuggingFaceTokenizer;
+use crate::tool_parser::ParserRegistry;
 use serde_json::Value;
+use uuid::Uuid;
 
 // Data structures for processing
 #[derive(Debug)]
@@ -49,7 +55,7 @@ pub struct GrpcRouter {
 
 impl GrpcRouter {
     /// Create a new gRPC router
-    pub async fn new(ctx: &Arc<crate::server::AppContext>) -> Result<Self, String> {
+    pub async fn new(ctx: &Arc<AppContext>) -> Result<Self, String> {
         // Extract necessary components from context
         let tokenizer = ctx
             .tokenizer
@@ -71,7 +77,7 @@ impl GrpcRouter {
         let workers = worker_registry.get_workers_filtered(
             None,
             Some(WorkerType::Regular),
-            Some(crate::core::ConnectionMode::Grpc { port: None }),
+            Some(ConnectionMode::Grpc { port: None }),
             false,
         );
 
@@ -207,17 +213,17 @@ impl GrpcRouter {
         &self,
         model_id: Option<&str>,
         text: Option<&str>,
-    ) -> Option<Arc<dyn crate::core::Worker>> {
+    ) -> Option<Arc<dyn Worker>> {
         // Get workers for the specified model, filtered by connection mode
         let workers = self.worker_registry.get_workers_filtered(
             model_id,
             Some(WorkerType::Regular),
-            Some(crate::core::ConnectionMode::Grpc { port: None }),
+            Some(ConnectionMode::Grpc { port: None }),
             false, // get all workers, we'll filter by is_available() next
         );
 
         // Filter by availability (health + circuit breaker)
-        let available: Vec<Arc<dyn crate::core::Worker>> = workers
+        let available: Vec<Arc<dyn Worker>> = workers
             .iter()
             .filter(|w| w.is_available())
             .cloned()
@@ -244,10 +250,10 @@ impl GrpcRouter {
         request: &ChatCompletionRequest,
     ) -> Result<ProcessedMessages, String> {
         // Use the tokenizer's chat template - we require HuggingFace tokenizer for gRPC
-        let formatted_text = if let Some(hf_tokenizer) =
-            self.tokenizer
-                .as_any()
-                .downcast_ref::<crate::tokenizer::HuggingFaceTokenizer>()
+        let formatted_text = if let Some(hf_tokenizer) = self
+            .tokenizer
+            .as_any()
+            .downcast_ref::<HuggingFaceTokenizer>()
         {
             // Get content format and transform messages accordingly
             let content_format = hf_tokenizer.chat_template_content_format();
@@ -350,9 +356,9 @@ impl GrpcRouter {
 
     /// Process messages based on content format for ANY message type
     fn process_content_format(
-        messages: &[crate::protocols::spec::ChatMessage],
-        content_format: crate::tokenizer::chat_template::ChatTemplateContentFormat,
-    ) -> Result<Vec<serde_json::Value>, String> {
+        messages: &[ChatMessage],
+        content_format: ChatTemplateContentFormat,
+    ) -> Result<Vec<Value>, String> {
         messages
             .iter()
             .map(|message| {
@@ -422,7 +428,7 @@ impl GrpcRouter {
 
     /// Process tool call arguments in messages
     /// Per Transformers docs, tool call arguments in assistant messages should be dicts
-    fn process_tool_call_arguments(messages: &mut [serde_json::Value]) -> Result<(), String> {
+    fn process_tool_call_arguments(messages: &mut [Value]) -> Result<(), String> {
         for msg in messages {
             // Early return if not assistant message
             let role = msg.get("role").and_then(|v| v.as_str());
@@ -466,8 +472,8 @@ impl GrpcRouter {
     /// Generate tool constraints for structured generation
     fn generate_tool_constraints(
         &self,
-        _tools: &[crate::protocols::spec::Tool],
-        _tool_choice: &Option<crate::protocols::spec::ToolChoice>,
+        _tools: &[Tool],
+        _tool_choice: &Option<ToolChoice>,
         model: &str,
     ) -> Option<(String, String)> {
         let _parser = self.tool_parser_registry.get_parser(model)?;
@@ -541,7 +547,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_generate(
         &self,
         _headers: Option<&HeaderMap>,
-        _body: &crate::protocols::spec::GenerateRequest,
+        _body: &GenerateRequest,
         _model_id: Option<&str>,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()
@@ -550,7 +556,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_chat(
         &self,
         headers: Option<&HeaderMap>,
-        body: &crate::protocols::spec::ChatCompletionRequest,
+        body: &ChatCompletionRequest,
         model_id: Option<&str>,
     ) -> Response {
         self.route_chat_impl(headers, body, model_id).await
@@ -559,7 +565,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_completion(
         &self,
         _headers: Option<&HeaderMap>,
-        _body: &crate::protocols::spec::CompletionRequest,
+        _body: &CompletionRequest,
         _model_id: Option<&str>,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()
@@ -568,7 +574,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_responses(
         &self,
         _headers: Option<&HeaderMap>,
-        _body: &crate::protocols::spec::ResponsesRequest,
+        _body: &ResponsesRequest,
         _model_id: Option<&str>,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()
@@ -578,7 +584,7 @@ impl RouterTrait for GrpcRouter {
         &self,
         _headers: Option<&HeaderMap>,
         _response_id: &str,
-        _params: &crate::protocols::spec::ResponsesGetParams,
+        _params: &ResponsesGetParams,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()
     }
@@ -590,7 +596,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_embeddings(
         &self,
         _headers: Option<&HeaderMap>,
-        _body: &crate::protocols::spec::EmbeddingRequest,
+        _body: &EmbeddingRequest,
         _model_id: Option<&str>,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()
@@ -599,7 +605,7 @@ impl RouterTrait for GrpcRouter {
     async fn route_rerank(
         &self,
         _headers: Option<&HeaderMap>,
-        _body: &crate::protocols::spec::RerankRequest,
+        _body: &RerankRequest,
         _model_id: Option<&str>,
     ) -> Response {
         (StatusCode::NOT_IMPLEMENTED).into_response()