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.net.JBossOperationsManager.DataSourceType; 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 DataSourceMetricsViewFragment extends SherlockListFragment { private static final String TAG = DataSourceMetricsViewFragment.class.getSimpleName(); private JBossAdminApplication application; private ProgressDialog progress; ArrayList<Metric> poolMetrics; ArrayList<Metric> prepStatementMetrics; private String dsName; private DataSourceType dsType; public static DataSourceMetricsViewFragment newInstance(String name, DataSourceType type) { DataSourceMetricsViewFragment f = new DataSourceMetricsViewFragment(); Bundle args = new Bundle(); args.putString("dsName", name); args.putString("dsType", type.name()); f.setArguments(args); return f; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.d(TAG, "@onCreate()"); this.dsName = getArguments().getString("dsName"); this.dsType = DataSourceType.valueOf(getArguments().getString("dsType")); application = (JBossAdminApplication) getActivity().getApplication(); // restore state in case of a configuration change (eg orientation) if (savedInstanceState != null) { poolMetrics = savedInstanceState.getParcelableArrayList("poolMetrics"); prepStatementMetrics = savedInstanceState.getParcelableArrayList("prepStatementMetrics"); } MergeAdapter adapter = new MergeAdapter(); TextView sectionHeader; // Section: Pool Usage sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Pool Usage"); adapter.addView(sectionHeader); if (poolMetrics == null) { poolMetrics = new ArrayList<Metric>(); poolMetrics.add(new Metric("Available", "AvailableCount")); poolMetrics.add(new Metric("Active Count", "ActiveCount")); poolMetrics.add(new Metric("Max Used", "MaxUsedCount")); } MetricsAdapter poolMetricsAdapter = new MetricsAdapter(getSherlockActivity(), poolMetrics); adapter.addAdapter(poolMetricsAdapter); // Section: Prepared Statement Pool Usage sectionHeader = new TextView(getActivity()); sectionHeader.setBackgroundColor(Color.DKGRAY); sectionHeader.setPadding(15, 10, 0, 10); sectionHeader.setText("Prepared Statement Pool Usage"); adapter.addView(sectionHeader); if (prepStatementMetrics == null) { prepStatementMetrics = new ArrayList<Metric>(); prepStatementMetrics.add(new Metric("Current Size", "PreparedStatementCacheCurrentSize")); prepStatementMetrics.add(new Metric("Hit Count", "PreparedStatementCacheHitCount")); prepStatementMetrics.add(new Metric("Miss Used", "PreparedStatementCacheMissCount")); } MetricsAdapter prepStatementMetricsAdapter = new MetricsAdapter(getSherlockActivity(), prepStatementMetrics); adapter.addAdapter(prepStatementMetricsAdapter); 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("poolMetrics", poolMetrics); outState.putParcelableArrayList("prepStatementMetrics", prepStatementMetrics); } @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().fetchDataSourceMetrics(this.dsName, this.dsType, new Callback() { @Override public void onSuccess(JsonElement reply) { progress.dismiss(); JsonObject jsonObj = reply.getAsJsonObject(); Map<String, String> info = new HashMap<String, String>(); JsonObject jsonPool = jsonObj.getAsJsonObject("step-1").getAsJsonObject("result"); int availCount = jsonPool.getAsJsonPrimitive("AvailableCount").getAsInt(); int activeCount = jsonPool.getAsJsonPrimitive("ActiveCount").getAsInt(); int maxUsedCount = jsonPool.getAsJsonPrimitive("MaxUsedCount").getAsInt(); float usedPerc = (availCount != 0 ? ((float) activeCount / availCount) * 100 : 0); info.put("AvailableCount", String.format("%d", availCount)); info.put("ActiveCount", String.format("%d (%.0f%%)", activeCount, usedPerc)); info.put("MaxUsedCount", String.format("%d", maxUsedCount)); for (Metric metric : poolMetrics) { metric.setValue(info.get(metric.getKey())); } JsonObject jsonJDBC = jsonObj.getAsJsonObject("step-2").getAsJsonObject("result"); int curSize = jsonJDBC.getAsJsonPrimitive("PreparedStatementCacheCurrentSize").getAsInt(); int hitCount = jsonJDBC.getAsJsonPrimitive("PreparedStatementCacheHitCount").getAsInt(); float hitPerc = (curSize != 0 ? ((float) hitCount / curSize) * 100 : 0); int misUsed = jsonJDBC.getAsJsonPrimitive("PreparedStatementCacheMissCount").getAsInt(); float misPerc = (curSize != 0 ? ((float) misUsed / curSize) * 100 : 0); info.put("PreparedStatementCacheCurrentSize", String.format("%d", curSize)); info.put("PreparedStatementCacheHitCount", String.format("%d (%.0f%%)", hitCount, hitPerc)); info.put("PreparedStatementCacheMissCount", String.format("%d (%.0f%%)", misUsed, misPerc)); for (Metric metric : prepStatementMetrics) { metric.setValue(info.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(); } }); } }