WIP

Author: umegane

src/CMakeLists.txt

@@ -3,6 +3,7 @@ file(GLOB SOURCES
         "limestone/replication/*.cpp"
         "limestone/partitioned_cursor/*.cpp"
         "limestone/grpc/service/*.cpp"
+        "limestone/grpc/backend/*.cpp"
         "limestone/grpc/client/*.cpp"
         "limestone/wal_sync/*.cpp"
 )

src/limestone/grpc/backend/backend_shared_impl.cpp

@@ -0,0 +1,14 @@
+#include "backend_shared_impl.h"
+
+namespace limestone::grpc::service {
+
+
+backend_shared_impl::backend_shared_impl(const boost::filesystem::path& log_dir)
+    : log_dir_(log_dir) {}
+
+std::vector<limestone::internal::wal_history::record> backend_shared_impl::list_wal_history() {
+    // stub implementation
+    return {};
+}
+
+} // namespace limestone::grpc::service

src/limestone/grpc/backend/backend_shared_impl.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <vector>
+#include "wal_sync/wal_history.h"
+
+namespace limestone::grpc::service {
+
+class backend_shared_impl {
+public:
+    explicit backend_shared_impl(const boost::filesystem::path& log_dir);
+    virtual ~backend_shared_impl() = default;
+
+    // Shared logic for listing WAL history
+    std::vector<limestone::internal::wal_history::record> list_wal_history();
+
+private:
+    boost::filesystem::path log_dir_;
+};
+
+} // namespace limestone::grpc::service

…ne/grpc/service/grpc_service_backend.cpp …ne/grpc/backend/grpc_service_backend.cppsrc/limestone/grpc/service/grpc_service_backend.cpp renamed to src/limestone/grpc/backend/grpc_service_backend.cpp src/limestone/grpc/service/grpc_service_backend.cpp renamed to src/limestone/grpc/backend/grpc_service_backend.cpp

@@ -18,9 +18,12 @@
 #include <string>
 #include <boost/filesystem.hpp>
 #include "limestone/api/datastore.h"
+#include "wal_sync/wal_history.h"
 
 namespace limestone::grpc::service {
 
+using limestone::internal::wal_history;
+
 // Pure interface for gRPC backends.
 // Implementations: inproc_backend, standalone_backend.
 class grpc_service_backend {
@@ -30,6 +33,9 @@ class grpc_service_backend {
     // Factory helpers (unchanged)
     static std::unique_ptr<grpc_service_backend> create_inproc(limestone::api::datastore& store);
     static std::unique_ptr<grpc_service_backend> create_standalone(const boost::filesystem::path& log_dir);
+    
+    // Returns the list of WAL history records.
+    virtual std::vector<wal_history::record> list_wal_history() = 0;
 
 protected:
     grpc_service_backend() = default;

…tone/grpc/service/grpc_service_backend.h …tone/grpc/backend/grpc_service_backend.hsrc/limestone/grpc/service/grpc_service_backend.h renamed to src/limestone/grpc/backend/grpc_service_backend.h src/limestone/grpc/service/grpc_service_backend.h renamed to src/limestone/grpc/backend/grpc_service_backend.h

@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2022-2025 Project Tsurugi.
  *
@@ -25,5 +24,11 @@ inproc_backend::inproc_backend(limestone::api::datastore& store)
 	// store_ already initialized by member initializer list
 }
 
+std::vector<wal_history::record> inproc_backend::list_wal_history() {
+	// stub implementation
+	return {};
+}
+
+
 
 } // namespace limestone::grpc::service

…imestone/grpc/service/inproc_backend.cpp …imestone/grpc/backend/inproc_backend.cppsrc/limestone/grpc/service/inproc_backend.cpp renamed to src/limestone/grpc/backend/inproc_backend.cpp src/limestone/grpc/service/inproc_backend.cpp renamed to src/limestone/grpc/backend/inproc_backend.cpp

@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2022-2025 Project Tsurugi.
  *
@@ -16,6 +15,7 @@
  */ 
 #pragma once
 
+#include <vector>
 #include "grpc_service_backend.h"
 
 namespace limestone::grpc::service {
@@ -25,8 +25,10 @@ class inproc_backend : public grpc_service_backend {
     explicit inproc_backend(limestone::api::datastore& store);
     ~inproc_backend() override = default;
 
+    std::vector<wal_history::record> list_wal_history() override;
 private:
     limestone::api::datastore& store_;
 };
 
 } // namespace limestone::grpc::service
+// Move file to src/limestone/grpc/service/backend/inproc_backend.h

…/limestone/grpc/service/inproc_backend.h …/limestone/grpc/backend/inproc_backend.hsrc/limestone/grpc/service/inproc_backend.h renamed to src/limestone/grpc/backend/inproc_backend.h src/limestone/grpc/service/inproc_backend.h renamed to src/limestone/grpc/backend/inproc_backend.h

@@ -18,14 +18,16 @@
 
 namespace limestone::grpc::service {
 
-
-
-
 standalone_backend::standalone_backend(const boost::filesystem::path& log_dir)
 	: log_dir_(log_dir)
 {
 	// log_dir_ already initialized by member initializer list
 }
 
+std::vector<wal_history::record> standalone_backend::list_wal_history() {
+	// stub implementation
+	return {};
+}
+
 } // namespace limestone::grpc::service
 

…tone/grpc/service/standalone_backend.cpp …tone/grpc/backend/standalone_backend.cppsrc/limestone/grpc/service/standalone_backend.cpp renamed to src/limestone/grpc/backend/standalone_backend.cpp src/limestone/grpc/service/standalone_backend.cpp renamed to src/limestone/grpc/backend/standalone_backend.cpp

@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2022-2025 Project Tsurugi.
  *
@@ -16,6 +15,7 @@
  */ 
 #pragma once
 
+#include <vector>
 #include "grpc_service_backend.h"
 
 namespace limestone::grpc::service {
@@ -25,6 +25,7 @@ class standalone_backend : public grpc_service_backend {
     explicit standalone_backend(const boost::filesystem::path& log_dir);
     ~standalone_backend() override = default;
 
+    std::vector<wal_history::record> list_wal_history() override;
 private:
     boost::filesystem::path log_dir_;
 };

…estone/grpc/service/standalone_backend.h …estone/grpc/backend/standalone_backend.hsrc/limestone/grpc/service/standalone_backend.h renamed to src/limestone/grpc/backend/standalone_backend.h src/limestone/grpc/service/standalone_backend.h renamed to src/limestone/grpc/backend/standalone_backend.h

@@ -16,7 +16,7 @@
 
 #include <gtest/gtest.h>
 #include <boost/filesystem.hpp>
-#include "limestone/grpc/service/grpc_service_backend.h"
+#include "limestone/grpc/backend/grpc_service_backend.h"
 #include "limestone/api/datastore.h"
 #include "test_root.h"
 #include "limestone/api/configuration.h"