main, scylla-gdb, cql-test-env: Unify debug::the_database

All the debug:: inhabitants have their names look like "the_<classname>"
This patch brings the database piece to this standard.

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

debug.hh

@@ -27,7 +27,7 @@ class database;
 
 namespace debug {
 
-extern seastar::sharded<database>* db;
+extern seastar::sharded<database>* the_database;
 
 
 }

main.cc

@@ -409,6 +409,7 @@ sharded<cql3::query_processor>* the_query_processor;
 sharded<qos::service_level_controller>* the_sl_controller;
 sharded<service::migration_manager>* the_migration_manager;
 sharded<service::storage_service>* the_storage_service;
+sharded<database>* the_database;
 }
 
 int main(int ac, char** av) {
@@ -485,7 +486,6 @@ int main(int ac, char** av) {
     distributed<database> db;
     seastar::sharded<service::cache_hitrate_calculator> cf_cache_hitrate_calculator;
     service::load_meter load_meter;
-    debug::db = &db;
     auto& proxy = service::get_storage_proxy();
     sharded<service::storage_service> ss;
     sharded<service::migration_manager> mm;
@@ -867,6 +867,7 @@ int main(int ac, char** av) {
                 // service_memory_limiter.stop().get();
             });
 
+            debug::the_database = &db;
             db.start(std::ref(*cfg), dbcfg, std::ref(mm_notifier), std::ref(feature_service), std::ref(token_metadata), std::ref(stop_signal.as_sharded_abort_source()), std::ref(sst_dir_semaphore)).get();
             start_large_data_handler(db).get();
             auto stop_database_and_sstables = defer_verbose_shutdown("database", [&db] {
@@ -1456,9 +1457,3 @@ int main(int ac, char** av) {
       return 7; // 1 has a special meaning for upstart
   }
 }
-
-namespace debug {
-
-seastar::sharded<database>* db;
-
-}

scylla-gdb.py

@@ -983,7 +983,12 @@ class sharded:
 
 
 def find_db(shard=None):
-    return sharded(gdb.parse_and_eval('::debug::db')).instance(shard)
+    try:
+        db = gdb.parse_and_eval('::debug::the_database')
+    except Exception as e:
+        db = gdb.parse_and_eval('::debug::db')
+
+    return sharded(db).instance(shard)
 
 
 def find_dbs():

test/lib/cql_test_env.cc

@@ -464,9 +464,9 @@ public:
             abort_sources.start().get();
             auto stop_abort_sources = defer([&] { abort_sources.stop().get(); });
             sharded<database> db;
-            debug::db = &db;
+            debug::the_database = &db;
             auto reset_db_ptr = defer([] {
-                debug::db = nullptr;
+                debug::the_database = nullptr;
             });
             auto cfg = cfg_in.db_config;
             tmpdir data_dir;
@@ -827,6 +827,6 @@ cql_test_config raft_cql_test_config() {
 
 namespace debug {
 
-seastar::sharded<database>* db;
+seastar::sharded<database>* the_database;
 
 }

test/scylla-gdb/test.py

@@ -28,7 +28,7 @@ do('break sstables::compact_sstables')
 do('ignore 1 10')
 do('run')
 
-db = sharded(gdb.parse_and_eval('::debug::db')).local()
+db = sharded(gdb.parse_and_eval('::debug::the_database')).local()
 gdb.set_convenience_variable('db', db)
 
 # now try some commands