api: Add sharded<database>& arg to set_cache_service()

The reference is already available in set_server_column_family(), pass
it further so that "cache" handlers are able to use it (next patch).

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

api/api.cc

@@ -230,7 +230,9 @@ future<> set_server_column_family(http_context& ctx, sharded<replica::database>&
                     set_column_family(ctx, r, db, sys_ks);
                 });
     co_await register_api(ctx, "cache_service",
-            "The cache service API", set_cache_service);
+            "The cache service API", [&db] (http_context& ctx, routes& r) {
+                    set_cache_service(ctx, db, r);
+                });
 }
 
 future<> unset_server_column_family(http_context& ctx) {

api/cache_service.cc

@@ -16,7 +16,7 @@ using namespace json;
 using namespace seastar::httpd;
 namespace cs = httpd::cache_service_json;
 
-void set_cache_service(http_context& ctx, routes& r) {
+void set_cache_service(http_context& ctx, sharded<replica::database>& db, routes& r) {
     cs::get_row_cache_save_period_in_seconds.set(r, [](std::unique_ptr<http::request> req) {
         // We never save the cache
         // Origin uses 0 for never

api/cache_service.hh

@@ -7,15 +7,20 @@
  */
 
 #pragma once
+#include <seastar/core/sharded.hh>
 
 namespace seastar::httpd {
 class routes;
 }
 
+namespace replica {
+class database;
+}
+
 namespace api {
 
 struct http_context;
-void set_cache_service(http_context& ctx, seastar::httpd::routes& r);
+void set_cache_service(http_context& ctx, seastar::sharded<replica::database>& db, seastar::httpd::routes& r);
 void unset_cache_service(http_context& ctx, seastar::httpd::routes& r);
 
 }