feat(db): fix build bug

Former-commit-id: ccaea7bc9f6f281f0f973ad1de7b5fa73d693c70

cpp/src/db/DBImpl.cpp

@@ -497,7 +497,7 @@ Status DBImpl::BuildIndex(const meta::TableFileSchema& file) {
 }
 
 Status DBImpl::BuildIndexByTable(const std::string& table_id) {
-    std::unique_ptr<std::mutex> lock(build_index_mutex_);
+    std::unique_lock<std::mutex> lock(build_index_mutex_);
     meta::TableFilesSchema to_index_files;
     meta_ptr_->FilesToIndex(to_index_files);
 
@@ -516,7 +516,7 @@ Status DBImpl::BuildIndexByTable(const std::string& table_id) {
 }
 
 void DBImpl::BackgroundBuildIndex() {
-    std::unique_ptr<std::mutex> lock(build_index_mutex_);
+    std::unique_lock<std::mutex> lock(build_index_mutex_);
     meta::TableFilesSchema to_index_files;
     meta_ptr_->FilesToIndex(to_index_files);
     Status status;

cpp/src/db/DBImpl.h

@@ -113,7 +113,7 @@ class DBImpl : public DB {
     void BackgroundBuildIndex();
 
     Status
-    BuildIndexByTable(const std::string& table_id) {
+    BuildIndexByTable(const std::string& table_id);
     Status
     BuildIndex(const meta::TableFileSchema &);
 

cpp/src/db/MySQLMetaImpl.cpp

@@ -1479,6 +1479,11 @@ namespace meta {
         return Status::OK();
     }
 
+    Status MySQLMetaImpl::UpdateTableFilesToIndex(const std::string& table_id) {
+        // TODO
+        return Status::OK();
+    }
+
     Status MySQLMetaImpl::UpdateTableFiles(TableFilesSchema &files) {
 
 //        std::lock_guard<std::recursive_mutex> lock(mysql_mutex);

cpp/src/db/MySQLMetaImpl.h

@@ -42,6 +42,8 @@ namespace meta {
 
         virtual Status UpdateTableFile(TableFileSchema& file_schema) override;
 
+        virtual Status UpdateTableFilesToIndex(const std::string& table_id) override;
+
         virtual Status UpdateTableFiles(TableFilesSchema& files) override;
 
         virtual Status FilesToSearch(const std::string& table_id,