/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.jstorm.ui.controller;

import backtype.storm.generated.*;
import backtype.storm.utils.NimbusClient;
import com.alibaba.jstorm.ui.model.*;
import com.alibaba.jstorm.ui.utils.NimbusClientManager;
import com.alibaba.jstorm.ui.utils.UIMetricUtils;
import com.alibaba.jstorm.ui.utils.UIUtils;
import com.alibaba.jstorm.utils.JStormUtils;

import com.google.common.collect.Lists;
import org.apache.commons.lang.StringEscapeUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.*;

/**
 * @author Jark (wuchong.wc@alibaba-inc.com)
 */
@Controller
public class TopologyController {
    private static final Logger LOG = LoggerFactory.getLogger(TopologyController.class);

    @RequestMapping(value = "/topology", method = RequestMethod.GET)
    public String show(@RequestParam(value = "cluster", required = true) String cluster,
                       @RequestParam(value = "id") String id,
                       @RequestParam(value = "win", required = false) String win,
                       ModelMap model) {
        cluster = StringEscapeUtils.escapeHtml(cluster);
        id = StringEscapeUtils.escapeHtml(id);
        long start = System.currentTimeMillis();
        LOG.info("request topology info for cluster name: " + cluster + " id:" + id);
        int window = UIUtils.parseWindow(win);
        UIUtils.addWindowAttribute(model, window);
        NimbusClient client = null;
        try {
            client = NimbusClientManager.getNimbusClient(cluster);
            TopologyInfo topologyInfo = client.getClient().getTopologyInfo(id);
//            System.out.println("topologyinfo worker metric:" + topologyInfo.get_metrics().get_workerMetric());
            model.addAttribute("topology", JStormUtils.thriftToMap(topologyInfo.get_topology()));
//            model.addAttribute("tasks", getTaskEntities(topologyInfo));       //remove tasks stat
            model.addAttribute("supervisorPort", UIUtils.getSupervisorPort(cluster));

            MetricInfo topologyMetrics = topologyInfo.get_metrics().get_topologyMetric();
//            List<MetricInfo> topologyMetrics = client.getClient().getMetrics(id, MetaType.TOPOLOGY.getT());
//            System.out.println("topologyMetrics:" + topologyMetrics);
            UISummaryMetric topologyData = UIMetricUtils.getSummaryMetrics(topologyMetrics, window);
            model.addAttribute("topologyData", topologyData);
            model.addAttribute("topologyHead", UIMetricUtils.sortHead(topologyData, UISummaryMetric.HEAD));

            MetricInfo componentMetrics = topologyInfo.get_metrics().get_componentMetric();
//            List<MetricInfo> componentMetrics = client.getClient().getMetrics(id, MetaType.COMPONENT.getT());
//            System.out.println("componentMetrics:" + componentMetrics);
            List<UIUserDefinedMetric> userDefinedMetrics = Lists.newArrayList();
            List<UIComponentMetric> componentData = UIMetricUtils.getComponentMetrics(componentMetrics, window,
                    topologyInfo.get_components(), userDefinedMetrics);
            model.addAttribute("componentData", componentData);
            model.addAttribute("componentHead", UIMetricUtils.sortHead(componentData, UIComponentMetric.HEAD));
            model.addAttribute("userDefinedMetrics", userDefinedMetrics);
//            System.out.println("componentHead:" + BasicMetric.sortHead(componentData));

            MetricInfo workerMetrics = topologyInfo.get_metrics().get_workerMetric();
//            List<MetricInfo> workerMetrics = client.getClient().getMetrics(id, MetaType.WORKER.getT());
//            System.out.println("workerMetrics:" + workerMetrics);
            List<UIWorkerMetric> workerData = UIMetricUtils.getWorkerMetrics(workerMetrics, id, window);
            model.addAttribute("workerData", workerData);
            model.addAttribute("workerHead", UIMetricUtils.sortHead(workerData, UIWorkerMetric.HEAD));


            List<TaskEntity> taskData = UIUtils.getTaskEntities(topologyInfo);
            model.addAttribute("taskData", taskData);

        } catch (NotAliveException nae) {
            model.addAttribute("flush", String.format("The topology: %s is dead.", id));
        } catch (Exception e) {
            NimbusClientManager.removeClient(cluster);
            LOG.error(e.getMessage(), e);
            UIUtils.addErrorAttribute(model, e);
        }
        model.addAttribute("page", "topology");
        model.addAttribute("clusterName", cluster);
        UIUtils.addTitleAttribute(model, "Topology Summary");

        LOG.info("topology page show cost:{}ms", System.currentTimeMillis() - start);
        return "topology";
    }








}