Add a way to query nodeos reversible db size - added an api endpoint …

libraries/chain/controller.cpp

@@ -2455,6 +2455,8 @@ chainbase::database& controller::mutable_db()const { return my->db; }
 
 const fork_database& controller::fork_db()const { return my->fork_db; }
 
+const chainbase::database& controller::reversible_db()const { return my->reversible_blocks; }
+
 void controller::preactivate_feature( const digest_type& feature_digest ) {
    const auto& pfs = my->protocol_features.get_protocol_feature_set();
    auto cur_time = pending_block_time();

libraries/chain/include/eosio/chain/controller.hpp

@@ -171,6 +171,7 @@ namespace eosio { namespace chain {
          boost::asio::io_context& get_thread_pool();
 
          const chainbase::database& db()const;
+         const chainbase::database& reversible_db() const;
 
          const fork_database& fork_db()const;
 

plugins/db_size_api_plugin/db_size_api_plugin.cpp

@@ -28,11 +28,12 @@ void db_size_api_plugin::plugin_startup() {
    app().get_plugin<http_plugin>().add_api({
        CALL(db_size, this, get,
             INVOKE_R_V(this, get), 200),
+       CALL(db_size, this, get_reversible,
+            INVOKE_R_V(this, get_reversible), 200),
    });
 }
 
-db_size_stats db_size_api_plugin::get() {
-   const chainbase::database& db = app().get_plugin<chain_plugin>().chain().db();
+db_size_stats db_size_api_plugin::get_db_stats(const chainbase::database& db) {
    db_size_stats ret;
 
    ret.free_bytes = db.get_segment_manager()->get_free_memory();
@@ -46,6 +47,14 @@ db_size_stats db_size_api_plugin::get() {
    return ret;
 }
 
+db_size_stats db_size_api_plugin::get() {
+   return get_db_stats(app().get_plugin<chain_plugin>().chain().db());
+}
+
+db_size_stats db_size_api_plugin::get_reversible() {
+   return get_db_stats(app().get_plugin<chain_plugin>().chain().reversible_db());
+}
+
 #undef INVOKE_R_V
 #undef CALL
 

plugins/db_size_api_plugin/include/eosio/db_size_api_plugin/db_size_api_plugin.hpp

@@ -38,8 +38,10 @@ class db_size_api_plugin : public plugin<db_size_api_plugin> {
    void plugin_shutdown() {}
 
    db_size_stats get();
+   db_size_stats get_reversible();
 
 private:
+   db_size_stats get_db_stats(const chainbase::database& );
 };
 
 }