private Optional<InstanceGroup> findInstanceGroup(String hostName) {
        // Find service group, support using cache
        return allServices.stream().filter(group -> group.matchesWithHostName(hostName)).findAny();
    }
Receive agent data and convert to meter system
oap-server/server-receiver-plugin/skywalking-zabbix-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/zabbix/provider/ZabbixMetrics.java