arrow::Result connect()

in src/afs.cc [1138:1179]
42 lines of code
6 McCabe index (conditional complexity)

	arrow::Result<uint64_t> connect(const std::string& databaseName,
	                                const std::string& userName,
	                                const std::string& password,
	                                const std::string& clientAddress)
	{
		auto session = create_session(databaseName, userName, password, clientAddress);
		auto id = session->id;
		dshash_release_lock(sessions_, session);
		kill(sharedData_->mainPID, SIGUSR1);
		{
			std::unique_lock<std::mutex> lock(mutex_);
			conditionVariable_.wait(lock, [&] {
				if (INTERRUPTS_PENDING_CONDITION())
				{
					return true;
				}
				session = static_cast<SessionData*>(dshash_find(sessions_, &id, false));
				if (!session)
				{
					return true;
				}
				const auto initialized = session->initialized;
				dshash_release_lock(sessions_, session);
				return initialized;
			});
		}
		session = static_cast<SessionData*>(dshash_find(sessions_, &id, false));
		if (!session)
		{
			return arrow::Status::Invalid("session is stale: ", id);
		}
		SessionReleaser sessionReleaser(sessions_, session);
		if (DsaPointerIsValid(session->errorMessage))
		{
			return report_session_error(session);
		}
		if (INTERRUPTS_PENDING_CONDITION())
		{
			return arrow::Status::Invalid("interrupted");
		}
		return id;
	}