Java tutorial
/* * JBoss Admin * Copyright 2012, Christos Vasilakis, and individual contributors. * See the copyright.txt file in the distribution for a full * listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.cvasilak.jboss.mobile.admin.fragments; import android.app.AlertDialog; import android.app.ProgressDialog; import android.graphics.Color; import android.os.Bundle; import android.util.Log; import android.widget.TextView; import com.actionbarsherlock.app.SherlockListFragment; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import org.cvasilak.jboss.mobile.admin.JBossAdminApplication; import org.cvasilak.jboss.mobile.admin.R; import org.cvasilak.jboss.mobile.admin.model.Metric; import org.cvasilak.jboss.mobile.admin.net.Callback; import org.cvasilak.jboss.mobile.admin.util.MetricsAdapter; import org.cvasilak.jboss.mobile.admin.util.commonsware.MergeAdapter; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; public class JVMMetricsViewFragment extends SherlockListFragment { private static final String TAG = "JVMMetricsViewFragment"; private JBossAdminApplication application; private ProgressDialog progress; ArrayList<Metric> osMetrics; ArrayList<Metric> heapMetrics; ArrayList<Metric> nonHeapMetrics; ArrayList<Metric> threadUsageMetrics; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.d(TAG, "@onCreate()"); application = (JBossAdminApplication) getActivity().getApplication(); // restore state in case of a configuration change (eg orientation) if (savedInstanceState != null) { osMetrics = savedInstanceState.getParcelableArrayList("os"); heapMetrics = savedInstanceState.getParcelableArrayList("heap-usage"); nonHeapMetrics = savedInstanceState.getParcelableArrayList("nonHeap-usage"); threadUsageMetrics = savedInstanceState.getParcelableArrayList("threading"); } MergeAdapter adapter = new MergeAdapter(); TextView sectionHeader; // Section: Operating System Information sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Operating System"); adapter.addView(sectionHeader); if (osMetrics == null) { osMetrics = new ArrayList<Metric>(); osMetrics.add(new Metric("Name", "name")); osMetrics.add(new Metric("Version", "version")); osMetrics.add(new Metric("Processors", "available-processors")); } MetricsAdapter osMetricsAdapter = new MetricsAdapter(getSherlockActivity(), osMetrics); adapter.addAdapter(osMetricsAdapter); // Section: Heap Usage sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Heap Usage"); adapter.addView(sectionHeader); if (heapMetrics == null) { heapMetrics = new ArrayList<Metric>(); heapMetrics.add(new Metric("Max", "max")); heapMetrics.add(new Metric("Used", "used")); heapMetrics.add(new Metric("Committed", "committed")); heapMetrics.add(new Metric("Init", "init")); } MetricsAdapter heapMetricsAdapter = new MetricsAdapter(getSherlockActivity(), heapMetrics); adapter.addAdapter(heapMetricsAdapter); // Section: Non Heap Usage sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Non Heap Usage"); adapter.addView(sectionHeader); if (nonHeapMetrics == null) { nonHeapMetrics = new ArrayList<Metric>(); nonHeapMetrics.add(new Metric("Max", "max")); nonHeapMetrics.add(new Metric("Used", "used")); nonHeapMetrics.add(new Metric("Committed", "committed")); nonHeapMetrics.add(new Metric("Init", "init")); } MetricsAdapter nonHeapMetricsAdapter = new MetricsAdapter(getSherlockActivity(), nonHeapMetrics); adapter.addAdapter(nonHeapMetricsAdapter); // Section: Thread Usage sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Thread Usage"); adapter.addView(sectionHeader); if (threadUsageMetrics == null) { threadUsageMetrics = new ArrayList<Metric>(); threadUsageMetrics.add(new Metric("Live", "thread-count")); threadUsageMetrics.add(new Metric("Daemon", "daemon")); } MetricsAdapter threadUsageMetricsAdapter = new MetricsAdapter(getSherlockActivity(), threadUsageMetrics); adapter.addAdapter(threadUsageMetricsAdapter); setListAdapter(adapter); // inform runtime that we have an action button (refresh) setHasOptionsMenu(true); // refresh only if the fragment is created // for the first time (no previous state) if (savedInstanceState == null) refresh(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putParcelableArrayList("os", osMetrics); outState.putParcelableArrayList("heap-usage", heapMetrics); outState.putParcelableArrayList("nonHeap-usage", nonHeapMetrics); outState.putParcelableArrayList("threading", threadUsageMetrics); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.menu_refresh, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == R.id.refresh) { refresh(); return (true); } return (super.onOptionsItemSelected(item)); } public void refresh() { progress = ProgressDialog.show(getSherlockActivity(), "", getString(R.string.queryingServer)); application.getOperationsManager().fetchJVMMetrics(new Callback() { @Override public void onSuccess(JsonElement reply) { progress.dismiss(); JsonObject jsonObj = reply.getAsJsonObject(); JsonObject step1 = jsonObj.getAsJsonObject("step-1").getAsJsonObject("result"); /* Memory */ long max, committed, init, used; float usedPerc; // Heap Usage JsonObject jsonHeapUsage = step1.getAsJsonObject("heap-memory-usage"); Map<String, String> heapUsage = new HashMap<String, String>(); max = jsonHeapUsage.getAsJsonPrimitive("max").getAsLong() / 1024 / 1024; committed = jsonHeapUsage.getAsJsonPrimitive("committed").getAsLong() / 1024 / 1024; init = jsonHeapUsage.getAsJsonPrimitive("init").getAsLong() / 1024 / 1024; used = jsonHeapUsage.getAsJsonPrimitive("used").getAsLong() / 1024 / 1024; usedPerc = (max != 0 ? ((float) used / max) * 100 : 0); heapUsage.put("max", String.format("%d MB", max)); heapUsage.put("used", String.format("%d MB (%.0f%%)", used, usedPerc)); heapUsage.put("committed", String.format("%d MB", committed)); heapUsage.put("init", String.format("%d MB", init)); for (Metric metric : heapMetrics) { metric.setValue(heapUsage.get(metric.getKey())); } // Non Heap Usage JsonObject jsonNonHeapUsage = step1.getAsJsonObject("non-heap-memory-usage"); Map<String, String> nonHeapUsage = new HashMap<String, String>(); max = jsonNonHeapUsage.getAsJsonPrimitive("max").getAsLong() / 1024 / 1024; committed = jsonNonHeapUsage.getAsJsonPrimitive("committed").getAsLong() / 1024 / 1024; init = jsonNonHeapUsage.getAsJsonPrimitive("init").getAsLong() / 1024 / 1024; used = jsonNonHeapUsage.getAsJsonPrimitive("used").getAsLong() / 1024 / 1024; usedPerc = (max != 0 ? ((float) used / max) * 100 : 0); nonHeapUsage.put("max", String.format("%d MB", max)); nonHeapUsage.put("used", String.format("%d MB (%.0f%%)", used, usedPerc)); nonHeapUsage.put("committed", String.format("%d MB", committed)); nonHeapUsage.put("init", String.format("%d MB", init)); for (Metric metric : nonHeapMetrics) { metric.setValue(nonHeapUsage.get(metric.getKey())); } // Threading JsonObject jsonThreading = jsonObj.getAsJsonObject("step-2").getAsJsonObject("result"); Map<String, String> threading = new HashMap<String, String>(); int threadCount = jsonThreading.getAsJsonPrimitive("thread-count").getAsInt(); int daemonThreadCount = jsonThreading.getAsJsonPrimitive("daemon-thread-count").getAsInt(); float daemonUsedPerc = (threadCount != 0 ? ((float) daemonThreadCount / threadCount) * 100 : 0); threading.put("thread-count", String.format("%d", threadCount)); threading.put("daemon", String.format("%d (%.0f%%)", daemonThreadCount, daemonUsedPerc)); for (Metric metric : threadUsageMetrics) { metric.setValue(threading.get(metric.getKey())); } // OS JsonObject jsonOS = jsonObj.getAsJsonObject("step-3").getAsJsonObject("result"); Map<String, String> os = new HashMap<String, String>(); os.put("name", jsonOS.get("name").getAsString()); os.put("version", jsonOS.get("version").getAsString()); os.put("available-processors", jsonOS.get("available-processors").getAsString()); for (Metric metric : osMetrics) { metric.setValue(os.get(metric.getKey())); } // refresh table ((MergeAdapter) getListAdapter()).notifyDataSetChanged(); } @Override public void onFailure(Exception e) { progress.dismiss(); AlertDialog.Builder alertDialog = new AlertDialog.Builder(getActivity()); alertDialog.setTitle(R.string.dialog_error_title).setMessage(e.getMessage()) .setPositiveButton(R.string.dialog_button_Bummer, null).setCancelable(false) .setIcon(android.R.drawable.ic_dialog_alert).show(); } }); } }