net.anotheria.moskito.webui.dashboards.action.ShowDashboardAction Maven / Gradle / Ivy

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package net.anotheria.moskito.webui.dashboards.action;

import net.anotheria.anoplass.api.APIException;
import net.anotheria.maf.action.ActionCommand;
import net.anotheria.maf.action.ActionMapping;
import net.anotheria.maf.bean.FormBean;
import net.anotheria.moskito.core.config.dashboards.DashboardConfig;
import net.anotheria.moskito.webui.dashboards.api.DashboardAO;
import net.anotheria.moskito.webui.dashboards.api.DashboardChartAO;
import net.anotheria.moskito.webui.dashboards.bean.DashboardChartBean;
import net.anotheria.moskito.webui.gauges.api.GaugeAO;
import net.anotheria.moskito.webui.gauges.bean.GaugeBean;
import net.anotheria.moskito.webui.threshold.bean.ThresholdStatusBean;
import net.anotheria.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

import static net.anotheria.moskito.webui.threshold.util.ThresholdStatusBeanUtility.getThresholdBeans;

/**
 * This action renders a dashboard. If no dashboard is selected explicitly the first dashboard is taken.
 *
 * @author lrosenberg
 * @since 12.02.15 14:02
 */
public class ShowDashboardAction extends BaseDashboardAction {
	/**
	 * Default dashboard refresh rate in ms.
	 */
	private static final long DEFAULT_DASHBOARD_REFRESH_RATE = TimeUnit.SECONDS.toMillis(60);

	@Override
	public ActionCommand execute(ActionMapping actionMapping, FormBean formBean, HttpServletRequest request, HttpServletResponse response) throws Exception {

		String dashboardName = getSelectedDashboard(request);
		Boolean gaugesPresent = false;
		Boolean chartsPresent = false;
		Boolean thresholdsPresent = false;

		//set default values, allow to exit previously.
		request.setAttribute("gaugesPresent", gaugesPresent);
		request.setAttribute("chartsPresent", chartsPresent);
		request.setAttribute("thresholdsPresent", thresholdsPresent);
		request.setAttribute("showHelp", !(gaugesPresent || chartsPresent || thresholdsPresent));

		DashboardConfig selectedDashboardConfig = getDashboardAPI().getDashboardConfig(dashboardName);
		if (dashboardName == null || selectedDashboardConfig == null) {
			dashboardName = getDashboardAPI().getDefaultDashboardName();
			if (dashboardName == null) { // no dashboards present
				return actionMapping.success();
			}
			request.setAttribute("selectedDashboard", dashboardName);
		}

		DashboardAO dashboard = getDashboardAPI().getDashboard(dashboardName);
		List thresholdStatusBeans = getThresholdBeans(dashboard.getThresholds());
		List gaugeBeans = getGaugeBeans(dashboard.getGauges());
		List dashboardChartAOList = getChartBeans(dashboard.getCharts());

		//now we definitely have a selected dashboard.
		//prepare thresholds
		if (dashboard.getThresholds()!=null && dashboard.getThresholds().size()>0){
			request.setAttribute("thresholds", thresholdStatusBeans);
			thresholdsPresent = true;
		}

		//prepare gauges
		if (dashboard.getGauges()!=null && dashboard.getGauges().size()>0){
			request.setAttribute("gauges", gaugeBeans);
			gaugesPresent = true;
		}

		//prepare charts
		if (dashboardChartAOList!=null && dashboardChartAOList.size()>0){
			request.setAttribute("charts", dashboardChartAOList);
			chartsPresent = true;
		}

		//maybe the value has changed.
		request.setAttribute("gaugesPresent", gaugesPresent);
		request.setAttribute("chartsPresent", chartsPresent);
		request.setAttribute("thresholdsPresent", thresholdsPresent);
		request.setAttribute("showHelp", !(gaugesPresent || chartsPresent || thresholdsPresent));

		String infoMessage = getInfoMessage();
		if (!StringUtils.isEmpty(infoMessage)) {
			request.setAttribute("infoMessage", infoMessage);
		}

		request.setAttribute("dashboardRestApiUrl", getDashboardRestApiUrl(request, dashboardName));
		request.setAttribute("dashboardRefreshRate", getDashboardRefreshRate(selectedDashboardConfig));

		return actionMapping.success();
	}

	@Override
	protected String getPageName() {
		return "dashboard";
	}

	private List getGaugeBeans(List gaugeAOList) throws APIException {
		List ret = new ArrayList<>();
		if (gaugeAOList == null || gaugeAOList.size() == 0)
			return ret;

		List dashboardAOList = new ArrayList<>();
		for(String name : getDashboardAPI().getDashboardNames()) {
			dashboardAOList.add(getDashboardAPI().getDashboard(name));
		}
		for (GaugeAO gaugeAO : gaugeAOList) {
			String dashboardNames = "";
			for(DashboardAO dashboardAO: dashboardAOList) {
				if (dashboardAO.getGauges() == null || !dashboardAO.getGauges().contains(gaugeAO)) {
					dashboardNames += dashboardAO.getName()+",";
				}
			}
			if (dashboardNames.length() > 0)
				dashboardNames = dashboardNames.substring(0, dashboardNames.length()-1);
			ret.add(new GaugeBean(gaugeAO, dashboardNames));
		}

		return ret;
	}


	private List getChartBeans(List dashboardChartAOList) throws APIException {
		List ret = new ArrayList<>();
		if (dashboardChartAOList == null || dashboardChartAOList.size() == 0)
			return ret;

		List dashboardAOList = new ArrayList<>();
		for(String name : getDashboardAPI().getDashboardNames()) {
			dashboardAOList.add(getDashboardAPI().getDashboard(name));
		}
		for (DashboardChartAO dashboardChartAO : dashboardChartAOList) {
			String dashboardNames = "";
			for(DashboardAO dashboardAO: dashboardAOList) {
				if (dashboardAO.getCharts() == null || !dashboardAO.getCharts().contains(dashboardChartAO)) {
					dashboardNames += dashboardAO.getName()+",";
				}
			}
			if (dashboardNames.length() > 0)
				dashboardNames = dashboardNames.substring(0, dashboardNames.length()-1);
			ret.add(new DashboardChartBean(dashboardChartAO, dashboardNames));
		}

		return ret;
	}

	/**
	 * Creates Dashboard REST API url for given dashboard.
	 * Used at UI.
	 *
	 * @param request       {@link HttpServletRequest}
	 * @param dashboardName dashboard name
	 * @return Dashboard REST API url, including context path
	 */
	private String getDashboardRestApiUrl(final HttpServletRequest request, final String dashboardName) {
		String contextPath = request.getContextPath();

		if (contextPath == null) {
			contextPath = "";
		}

		if (!contextPath.endsWith("/")) {
			contextPath += "/";
		}

		return contextPath + "moskito-inspect-rest/dashboards/" + dashboardName;
	}

	/**
	 * Returns dashboard refresh rate in ms.
	 * Used at UI for refreshing the dashboard.
	 *
	 * @param selectedDashboardConfig {@link DashboardConfig}
	 * @return dashboard refresh rate in ms
	 */
	private long getDashboardRefreshRate(final DashboardConfig selectedDashboardConfig) {
		if (selectedDashboardConfig == null) {
			return DEFAULT_DASHBOARD_REFRESH_RATE;
		}

		return TimeUnit.SECONDS.toMillis(selectedDashboardConfig.getRefresh());
	}
}