Java tutorial
/* * DD-WRT Companion is a mobile app that lets you connect to, * monitor and manage your DD-WRT routers on the go. * * Copyright (C) 2014 Armel Soro * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * Contact Info: Armel Soro <apps+ddwrt@rm3l.org> */ package org.rm3l.ddwrt.tiles.status.bandwidth; import android.content.Context; import android.graphics.Color; import android.os.Bundle; import android.support.v4.content.AsyncTaskLoader; import android.support.v4.content.Loader; import android.util.Log; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import com.actionbarsherlock.app.SherlockFragment; import com.google.common.base.Splitter; import com.google.common.base.Strings; import com.google.common.base.Throwables; import com.google.common.collect.EvictingQueue; import com.google.common.collect.Maps; import org.achartengine.ChartFactory; import org.achartengine.GraphicalView; import org.achartengine.chart.PointStyle; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.model.XYSeries; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.Nullable; import org.rm3l.ddwrt.R; import org.rm3l.ddwrt.exceptions.DDWRTNoDataException; import org.rm3l.ddwrt.exceptions.DDWRTTileAutoRefreshNotAllowedException; import org.rm3l.ddwrt.resources.None; import org.rm3l.ddwrt.resources.conn.NVRAMInfo; import org.rm3l.ddwrt.resources.conn.Router; import org.rm3l.ddwrt.tiles.DDWRTTile; import org.rm3l.ddwrt.utils.SSHUtils; import java.math.BigDecimal; import java.math.RoundingMode; import java.util.List; import java.util.Map; import java.util.Random; /** * */ public class BandwidthWANMonitoringTile extends DDWRTTile<None> { private static final String LOG_TAG = BandwidthWANMonitoringTile.class.getSimpleName(); private final Random randomColorGen = new Random(); private final Map<String, Integer> colorsCache = Maps.newHashMap(); @NotNull private final BandwidthMonitoringTile.BandwidthMonitoringIfaceData bandwidthMonitoringIfaceData = new BandwidthMonitoringTile.BandwidthMonitoringIfaceData(); private String wanIface; public BandwidthWANMonitoringTile(@NotNull SherlockFragment parentFragment, @NotNull Bundle arguments, Router router) { super(parentFragment, arguments, router, R.layout.tile_status_bandwidth_monitoring_iface, R.id.tile_status_bandwidth_monitoring_togglebutton); } @Override public int getTileTitleViewId() { return R.id.tile_status_bandwidth_monitoring_title; } @Nullable @Override protected Loader<None> getLoader(int id, Bundle args) { return new AsyncTaskLoader<None>(this.mParentFragmentActivity) { @Nullable @Override public None loadInBackground() { try { Log.d(LOG_TAG, "Init background loader for " + BandwidthMonitoringTile.class + ": routerInfo=" + mRouter + " / this.mAutoRefreshToggle= " + mAutoRefreshToggle + " / nbRunsLoader=" + nbRunsLoader); if (nbRunsLoader > 0 && !mAutoRefreshToggle) { //Skip run Log.d(LOG_TAG, "Skip loader run"); return (None) new None().setException(new DDWRTTileAutoRefreshNotAllowedException()); } nbRunsLoader++; //Start by getting information about the WAN iface name @Nullable final NVRAMInfo nvRamInfoFromRouter = SSHUtils.getNVRamInfoFromRouter(mRouter, mGlobalPreferences, NVRAMInfo.WAN_IFACE); if (nvRamInfoFromRouter == null) { throw new IllegalStateException("Whoops. WAN Iface could not be determined."); } wanIface = nvRamInfoFromRouter.getProperty(NVRAMInfo.WAN_IFACE); if (Strings.isNullOrEmpty(wanIface)) { throw new IllegalStateException("Whoops. WAN Iface could not be determined."); } @Nullable final String[] netDevWanIfaces = SSHUtils.getManualProperty(mRouter, mGlobalPreferences, "cat /proc/net/dev | grep \"" + wanIface + "\""); if (netDevWanIfaces == null || netDevWanIfaces.length == 0) { return null; } String netDevWanIface = netDevWanIfaces[0]; if (netDevWanIface == null) { return null; } netDevWanIface = netDevWanIface.replaceAll(wanIface + ":", ""); final List<String> netDevWanIfaceList = Splitter.on(" ").omitEmptyStrings().trimResults() .splitToList(netDevWanIface); if (netDevWanIfaceList == null || netDevWanIfaceList.size() <= 15) { return null; } final long timestamp = System.currentTimeMillis(); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_bytes", netDevWanIfaceList.get(0)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_packets", netDevWanIfaceList.get(1)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_errs", netDevWanIfaceList.get(2)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_drop", netDevWanIfaceList.get(3)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_fifo", netDevWanIfaceList.get(4)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_frame", netDevWanIfaceList.get(5)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_compressed", netDevWanIfaceList.get(6)); nvRamInfoFromRouter.setProperty(wanIface + "_rcv_multicast", netDevWanIfaceList.get(7)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_bytes", netDevWanIfaceList.get(8)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_packets", netDevWanIfaceList.get(9)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_errs", netDevWanIfaceList.get(10)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_drop", netDevWanIfaceList.get(11)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_fifo", netDevWanIfaceList.get(12)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_colls", netDevWanIfaceList.get(13)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_carrier", netDevWanIfaceList.get(14)); nvRamInfoFromRouter.setProperty(wanIface + "_xmit_compressed", netDevWanIfaceList.get(15)); //Ingress double wanRcvMBytes; final String wanRcvBytes = nvRamInfoFromRouter.getProperty(wanIface + "_rcv_bytes", "-1"); try { wanRcvMBytes = Double.parseDouble(wanRcvBytes) / (1024 * 1024); if (wanRcvMBytes >= 0.) { wanRcvMBytes = new BigDecimal(wanRcvMBytes).setScale(2, RoundingMode.HALF_UP) .doubleValue(); bandwidthMonitoringIfaceData.addData("IN", new BandwidthMonitoringTile.DataPoint(timestamp, wanRcvMBytes)); } } catch (@NotNull final NumberFormatException nfe) { return null; } nvRamInfoFromRouter.setProperty(wanIface + "_ingress_MB", Double.toString(wanRcvMBytes)); //Egress double wanXmitMBytes; final String wanXmitBytes = nvRamInfoFromRouter.getProperty(wanIface + "_xmit_bytes", "-1"); try { wanXmitMBytes = Double.parseDouble(wanXmitBytes) / (1024 * 1024); if (wanXmitMBytes >= 0.) { wanXmitMBytes = new BigDecimal(wanXmitMBytes).setScale(2, RoundingMode.HALF_UP) .doubleValue(); bandwidthMonitoringIfaceData.addData("OUT", new BandwidthMonitoringTile.DataPoint(timestamp, wanXmitMBytes)); } } catch (@NotNull final NumberFormatException nfe) { return null; } nvRamInfoFromRouter.setProperty(wanIface + "_egress_MB", Double.toString(wanXmitMBytes)); return new None(); } catch (@NotNull final Exception e) { e.printStackTrace(); return (None) new None().setException(e); } } }; } @Nullable @Override protected String getLogTag() { return LOG_TAG; } @Nullable @Override protected OnClickIntent getOnclickIntent() { //TODO return null; } @Override public void onLoadFinished(Loader<None> loader, None data) { Log.d(LOG_TAG, "onLoadFinished: loader=" + loader + " / data=" + data); layout.findViewById(R.id.tile_status_bandwidth_monitoring_graph_loading_view).setVisibility(View.GONE); layout.findViewById(R.id.tile_status_bandwidth_monitoring_graph_placeholder).setVisibility(View.VISIBLE); //noinspection ConstantConditions if (data == null || bandwidthMonitoringIfaceData.getData().isEmpty()) { data = (None) new None().setException(new DDWRTNoDataException("No Data!")); } @NotNull final TextView errorPlaceHolderView = (TextView) this.layout .findViewById(R.id.tile_status_bandwidth_monitoring_error); @Nullable final Exception exception = data.getException(); if (!(exception instanceof DDWRTTileAutoRefreshNotAllowedException)) { if (exception == null) { errorPlaceHolderView.setVisibility(View.GONE); } ((TextView) this.layout.findViewById(R.id.tile_status_bandwidth_monitoring_title)) .setText(this.mParentFragmentActivity.getResources().getString(R.string.bandwidth_usage_mb) + (!Strings.isNullOrEmpty(wanIface) ? (": " + wanIface) : "")); @NotNull final LinearLayout graphPlaceHolder = (LinearLayout) this.layout .findViewById(R.id.tile_status_bandwidth_monitoring_graph_placeholder); final Map<String, EvictingQueue<BandwidthMonitoringTile.DataPoint>> dataCircularBuffer = bandwidthMonitoringIfaceData .getData(); long maxX = System.currentTimeMillis() + 5000; long minX = System.currentTimeMillis() - 5000; double maxY = 10; double minY = 1.; final XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(); final XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer(); for (final Map.Entry<String, EvictingQueue<BandwidthMonitoringTile.DataPoint>> entry : dataCircularBuffer .entrySet()) { final String iface = entry.getKey(); final EvictingQueue<BandwidthMonitoringTile.DataPoint> dataPoints = entry.getValue(); final XYSeries series = new XYSeries(iface); for (final BandwidthMonitoringTile.DataPoint point : dataPoints) { final long x = point.getTimestamp(); final double y = point.getValue(); series.add(x, y); maxX = Math.max(maxX, x); minX = Math.min(minX, x); maxY = Math.max(maxY, y); minY = Math.min(minY, y); } // Now we add our series dataset.addSeries(series); // Now we create the renderer final XYSeriesRenderer renderer = new XYSeriesRenderer(); renderer.setLineWidth(2); Integer ifaceColor = colorsCache.get(iface); if (ifaceColor == null) { //Generate a Random Color, excluding 'white' (because graph background is already white) ifaceColor = Color.argb(255, randomColorGen.nextInt(255), randomColorGen.nextInt(255), randomColorGen.nextInt(255)); colorsCache.put(iface, ifaceColor); } renderer.setColor(ifaceColor); // Include low and max value renderer.setDisplayBoundingPoints(true); // we add point markers renderer.setPointStyle(PointStyle.POINT); renderer.setPointStrokeWidth(1); mRenderer.addSeriesRenderer(renderer); } // We want to avoid black border mRenderer.setMarginsColor(Color.argb(0x00, 0xff, 0x00, 0x00)); // transparent margins // Disable Pan on two axis mRenderer.setPanEnabled(false, false); mRenderer.setYAxisMax(maxY + 10); mRenderer.setYAxisMin(minY); mRenderer.setXAxisMin(minX); mRenderer.setXAxisMax(maxX + 10); mRenderer.setShowGrid(false); mRenderer.setClickEnabled(false); mRenderer.setZoomEnabled(true); mRenderer.setPanEnabled(false); mRenderer.setZoomRate(6.0f); mRenderer.setShowLabels(true); mRenderer.setFitLegend(true); mRenderer.setInScroll(true); final GraphicalView chartView = ChartFactory.getTimeChartView(graphPlaceHolder.getContext(), dataset, mRenderer, null); chartView.repaint(); graphPlaceHolder.addView(chartView, 0); } if (exception != null && !(exception instanceof DDWRTTileAutoRefreshNotAllowedException)) { //noinspection ThrowableResultOfMethodCallIgnored final Throwable rootCause = Throwables.getRootCause(exception); errorPlaceHolderView.setText("Error: " + (rootCause != null ? rootCause.getMessage() : "null")); final Context parentContext = this.mParentFragmentActivity; errorPlaceHolderView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(final View v) { //noinspection ThrowableResultOfMethodCallIgnored if (rootCause != null) { Toast.makeText(parentContext, rootCause.getMessage(), Toast.LENGTH_LONG).show(); } } }); errorPlaceHolderView.setVisibility(View.VISIBLE); } else { if (bandwidthMonitoringIfaceData.getData().isEmpty()) { errorPlaceHolderView.setText("Error: No Data!"); errorPlaceHolderView.setVisibility(View.VISIBLE); } } doneWithLoaderInstance(this, loader, R.id.tile_status_bandwidth_monitoring_togglebutton_title, R.id.tile_status_bandwidth_monitoring_togglebutton_separator); Log.d(LOG_TAG, "onLoadFinished(): done loading!"); } }