Method init

src/plugins/profiler/Profiler.cpp:266–357

//--------------------------------------

void ProfilerPlugin::init(ThrowStatusExceptionWrapper* status, IAttachment* attachment, FB_UINT64 aTicksFrequency)
{
	userAttachment = attachment;
	ticksFrequency = (SINT64) aTicksFrequency;

	constexpr auto sql = R"""(
		select exists(
		           select true
		               from rdb$roles
		               where rdb$role_name = 'PLG$PROFILER'
		       ) metadata_created,
		       rdb$get_context('SYSTEM', 'DB_NAME') db_name,
		       (select rdb$owner_name
		            from rdb$relations
		            where rdb$relation_name = 'RDB$DATABASE'
		       ) owner_name,
		       current_role,
		       rdb$role_in_use('PLG$PROFILER') role_in_use
		    from rdb$database
	)""";

	FB_MESSAGE(message, ThrowStatusExceptionWrapper,
		(FB_BOOLEAN, metadataCreated)
		(FB_INTL_VARCHAR(MAXPATHLEN * 4, CS_METADATA), dbName)
		(FB_INTL_VARCHAR(MAX_SQL_IDENTIFIER_LEN, CS_METADATA), ownerName)
		(FB_INTL_VARCHAR(MAX_SQL_IDENTIFIER_LEN, CS_METADATA), currentRole)
		(FB_BOOLEAN, roleInUse)
	) message(status, MasterInterfacePtr());
	message.clear();

	RefPtr<IAttachment> refAttachment(attachment);
	RefPtr<ITransaction> refTransaction;
	string currentRole;
	bool roleInUse;

	for (unsigned i = 0; i < 2; ++i)
	{
		refTransaction = makeNoIncRef(refAttachment->startTransaction(status, 0, nullptr));

		auto resultSet = makeNoIncRef(refAttachment->openCursor(status, refTransaction, 0, sql, SQL_DIALECT_CURRENT,
			nullptr, nullptr, message.getMetadata(), nullptr, 0));

		if (resultSet->fetchNext(status, message.getData()) == IStatus::RESULT_NO_DATA)
		{
			fb_assert(false);
			return;
		}

		if (i == 0)
		{
			currentRole = string(message->currentRole.str, message->currentRole.length);
			quote(currentRole);

			roleInUse = message->roleInUse;

			if (message->metadataCreated)
				break;