package com.alibaba.jstorm.daemon.nimbus;

import backtype.storm.Config;
import backtype.storm.generated.InvalidTopologyException;
import com.alibaba.jstorm.cluster.Common;
import com.alibaba.jstorm.cluster.StormConfig;
import com.alibaba.jstorm.metric.MetricUtils;
import org.jboss.netty.util.internal.ConcurrentHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Map;

public class TopologyNettyMgr {
    private static Logger LOG = LoggerFactory.getLogger(TopologyNettyMgr.class);
    private Map nimbusConf;
    private ConcurrentHashMap<String, Boolean> setting = new ConcurrentHashMap<String, Boolean>();

    public TopologyNettyMgr(Map conf) {
        nimbusConf = conf;

    }

    protected boolean getTopology(Map conf) {
        return MetricUtils.isEnableNettyMetrics(conf);
    }

    public boolean getTopology(String topologyId) {
        try {
            String topologyName = Common.topologyIdToName(topologyId);

            Boolean isEnable = setting.get(topologyName);
            if (isEnable != null) {
                return isEnable;
            }

            Map topologyConf = StormConfig.read_nimbus_topology_conf(nimbusConf, topologyId);

            isEnable = getTopology(topologyConf);
            setting.put(topologyName, isEnable);
            LOG.info("{} netty metrics setting is {}", topologyName, isEnable);
            return isEnable;

        } catch (Exception e) {
            LOG.info("Failed to get {} netty metrics setting ", topologyId);
            return true;
        }

    }

    public void setTopology(Map conf) {
        String topologyName = (String) conf.get(Config.TOPOLOGY_NAME);
        if (topologyName == null) {
            LOG.info("No topologyName setting");
            return;
        }

        boolean isEnable = getTopology(conf);

        setting.put(topologyName, isEnable);

        LOG.info("{} netty metrics setting is {}", topologyName, isEnable);
        return;

    }

    public void rmTopology(String topologyId) {
        String topologyName;
        try {
            topologyName = Common.topologyIdToName(topologyId);
            setting.remove(topologyName);
            LOG.info("Remove {} netty metrics setting ", topologyName);
        } catch (InvalidTopologyException ignored) {
        }

    }

}