private void initConfigs(MeterSystem meterSystem) {
        // Temporary instance group cache, encase generate multiple instance group
        HashMap<String, InstanceGroup> tmpGroupCache = new HashMap<>();

        // Each config entities
        originalConfigs.forEach(c ->
            c.getEntities().getHostPatterns().forEach(instance ->
                tmpGroupCache.computeIfAbsent(instance, ins -> {
                    InstanceGroup instanceGroup = new InstanceGroup(ins, meterSystem);
                    allServices.add(instanceGroup);
                    return instanceGroup;
                }).appendMetrics(c)));
    }
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