Android Open Source - Rhybudd Device List

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * Copyright (C) 2013 - Gareth Llewellyn
 *//www .  ja  v a 2s  .  co  m
 * This file is part of Rhybudd - http://blog.NetworksAreMadeOfString.co.uk/Rhybudd/
 *
 * 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/>
 */
package net.networksaremadeofstring.rhybudd;


import java.util.ArrayList;
import java.util.List;

import android.app.ActionBar;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import org.apache.http.conn.ConnectTimeoutException;
import org.json.JSONObject;
import com.bugsense.trace.BugSenseHandler;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.PreferenceManager;
import android.view.Window;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class DeviceList extends Activity
{
  ZenossAPIv2 API = null;
  JSONObject DeviceObject = null;
  JSONObject EventDetails = null;
  SharedPreferences settings = null;
  Handler firstLoadHandler;
  ProgressDialog dialog;
  Thread dataPreload;
  List<ZenossDevice> listOfZenossDevices = new ArrayList<ZenossDevice>();
  int DeviceCount = 0;
  ListView list;
  ZenossDeviceAdaptor adapter = null;
  //Cursor dbResults = null;

  //new
  Handler handler;
  ActionBar actionbar;
  Thread dataLoad;
  
  @Override
  public void onDestroy()
  {
    super.onDestroy();
    try
    {
        if(dialog != null && dialog.isShowing())
          dialog.dismiss();
    }
    catch(Exception e)
    {
            BugSenseHandler.sendExceptionMessage("DeviceList", "onDestroy", e);
    }
  }
  
  @Override
  public void onAttachedToWindow() 
  {
    super.onAttachedToWindow();
        try
        {
            Window window = getWindow();
            window.setFormat(PixelFormat.RGBA_8888);
        }
        catch (Exception e)
        {

        }
  }
  
  @Override
  public Object onRetainNonConfigurationInstance() 
  {
    try
    {
      if(dialog != null && dialog.isShowing())
      {
        dialog.dismiss();
      }
    }
    catch(Exception e)
    {
            BugSenseHandler.sendExceptionMessage("DeviceList", "onRetainNonConfigurationInstance", e);
    }
  
      return listOfZenossDevices;
  }
  
  /** Called when the activity is first created. */
    @SuppressWarnings({ "unchecked", "deprecation" })
  @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        
        settings = PreferenceManager.getDefaultSharedPreferences(this);
        
        setContentView(R.layout.devicelist);
        BugSenseHandler.initAndStartSession(DeviceList.this, "44a76a8c");

        actionbar = getActionBar();
    actionbar.setDisplayHomeAsUpEnabled(true);
    actionbar.setHomeButtonEnabled(true);
    actionbar.setTitle("Infrastructure");

        list = (ListView)findViewById(R.id.ZenossDeviceList);

        BugSenseHandler.initAndStartSession(DeviceList.this, "44a76a8c");
        
        handler = new Handler()
        {
          public void handleMessage(Message msg)
          {
            if(msg.what == 0)
            {
              Toast.makeText(DeviceList.this, "An error was encountered;\r\n" + msg.getData().getString("exception"), Toast.LENGTH_LONG).show();
            }
            else if(msg.what == 1)
          {
          dialog.setMessage("Refresh Complete!");
          this.sendEmptyMessageDelayed(2,1000);
          }
          else if(msg.what == 2)
          {
            dialog.dismiss();
            adapter = new ZenossDeviceAdaptor(DeviceList.this, listOfZenossDevices);
                list.setAdapter(adapter);
                ((TextView) findViewById(R.id.ServerCountLabel)).setText("Monitoring " + DeviceCount + " servers");
          }
          }
        };

        try
        {
          listOfZenossDevices = (List<ZenossDevice>) getLastNonConfigurationInstance();
        }
        catch(Exception e)
    {
          listOfZenossDevices = null;
      //BugSenseHandler.log("DeviceList", e);
    }
      
      if(listOfZenossDevices == null || listOfZenossDevices.size() < 1)
      {
        listOfZenossDevices = new ArrayList<ZenossDevice>();
        DBGetThread();
      }
      else
      {
        adapter = new ZenossDeviceAdaptor(DeviceList.this, listOfZenossDevices);
        list.setAdapter(adapter);
      }
    }
    
    
    public void DBGetThread()
    {
      dialog = new ProgressDialog(this);
      dialog.setTitle("Querying DB");
        dialog.setMessage("Please wait:\nLoading Infrastructure....");
        dialog.setCancelable(false);
        dialog.show();
        
      listOfZenossDevices.clear();
      dataLoad = new Thread() 
      {  
        public void run() 
        {
          try
          {
            //listOfZenossDevices = rhybuddCache.GetRhybuddDevices();
                    RhybuddDataSource datasource = new RhybuddDataSource(DeviceList.this);
                    datasource.open();
                    listOfZenossDevices = datasource.GetRhybuddDevices();
                    datasource.close();
          }
          catch(Exception e)
          {
            e.printStackTrace();
            listOfZenossDevices.clear();
          }
          
          if(listOfZenossDevices!= null && listOfZenossDevices.size() > 0)
          {
            DeviceCount = listOfZenossDevices.size();
            //Log.i("DeviceList","Found DB Data!");
            handler.sendEmptyMessage(2);
          }
          else
          {
            //Log.i("DeviceList","No DB data found, querying API directly");
            Refresh();
          }
        }
      };
      dataLoad.start();
    }
  
    public void Refresh()
    {
      if(dialog != null)
      {
        dialog.setTitle("Contacting Zenoss...");
            dialog.setMessage("Please wait:\nLoading Infrastructure....");
            dialog.setCancelable(false);
            
        if(!dialog.isShowing())
        {
          dialog.show();
        }
      }
      else
      {
        dialog = new ProgressDialog(this);
        dialog.setTitle("Contacting Zenoss...");
            dialog.setMessage("Please wait:\nLoading Infrastructure....");
            dialog.setCancelable(false);
            dialog.show();
      }
      
      if(listOfZenossDevices != null)
      listOfZenossDevices.clear();
      
    ((Thread) new Thread()
    {
      public void run()
      {
        String MessageExtra = "";
        try 
        {
          Message msg = new Message();
          Bundle bundle = new Bundle();
          
          ZenossAPI API = null;
          try
          {

                        if(PreferenceManager.getDefaultSharedPreferences(DeviceList.this).getBoolean(ZenossAPI.PREFERENCE_IS_ZAAS, false))
                        {
                            API = new ZenossAPIZaas();
                        }
                        else
                        {
                            API = new ZenossAPICore();
                        }

                        ZenossCredentials credentials = new ZenossCredentials(DeviceList.this);
                        API.Login(credentials);
          }
          catch(ConnectTimeoutException cte)
          {
            if(cte.getMessage() != null)
            {
              
              bundle.putString("exception","The connection timed out;\r\n" + cte.getMessage().toString());
              msg.setData(bundle);
              msg.what = 0;
              handler.sendMessage(msg);
              //Toast.makeText(DeviceList.this, "The connection timed out;\r\n" + cte.getMessage().toString(), Toast.LENGTH_LONG).show();
            }
            else
            {
              bundle.putString("exception","A time out error was encountered but the exception thrown contains no further information.");
              msg.setData(bundle);
              msg.what = 0;
              handler.sendMessage(msg);
              //Toast.makeText(DeviceList.this, "A time out error was encountered but the exception thrown contains no further information.", Toast.LENGTH_LONG).show();
            }
          }
          catch(Exception e)
          {
            if(e.getMessage() != null)
            {
              bundle.putString("exception","An error was encountered;\r\n" + e.getMessage().toString());
              msg.setData(bundle);
              msg.what = 0;
              handler.sendMessage(msg);
              //Toast.makeText(DeviceList.this, "An error was encountered;\r\n" + e.getMessage().toString(), Toast.LENGTH_LONG).show();
            }
            else
            {
              bundle.putString("exception","An error was encountered but the exception thrown contains no further information.");
              msg.setData(bundle);
              msg.what = 0;
              handler.sendMessage(msg);
              //Toast.makeText(DeviceList.this, "An error was encountered but the exception thrown contains no further information.", Toast.LENGTH_LONG).show();
            }
          }
          
          try
          {
            if(API != null)
            {
              listOfZenossDevices = API.GetRhybuddDevices();
            }
            else
            {
              listOfZenossDevices = null;
            }
          }
          catch(Exception e)
          {
            if(e.getMessage() != null)
              MessageExtra = e.getMessage();
            
            listOfZenossDevices = null;
          }
          
          if(listOfZenossDevices != null && listOfZenossDevices.size() > 0)
          {
            DeviceCount = listOfZenossDevices.size();
            Message.obtain();
            handler.sendEmptyMessage(1);

                        RhybuddDataSource datasource = new RhybuddDataSource(DeviceList.this);
                        datasource.open();
                        datasource.UpdateRhybuddDevices(listOfZenossDevices);
                        datasource.close();
          }
          else
          {
            //Message msg = new Message();
            //Bundle bundle = new Bundle();
            bundle.putString("exception","A query to both the local DB and Zenoss API returned no devices. " + MessageExtra );
            msg.setData(bundle);
            msg.what = 0;
            handler.sendMessage(msg);
          }
          
        } 
        catch (Exception e) 
        {
          //BugSenseHandler.log("DeviceList", e);
          Message msg = new Message();
          Bundle bundle = new Bundle();
          bundle.putString("exception",e.getMessage());
          msg.setData(bundle);
          msg.what = 0;
          handler.sendMessage(msg);
        }
      }
    }).start();
    }
    public void ViewDevice(String UID)
    {
      Intent ViewDeviceIntent = new Intent(DeviceList.this, ViewZenossDevice.class);
      ViewDeviceIntent.putExtra("UID", UID);
      DeviceList.this.startActivity(ViewDeviceIntent);
    }
    
    public boolean onCreateOptionsMenu(Menu menu)
  {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.devices, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item)
  {
    switch (item.getItemId()) 
    {
      case android.R.id.home:
          {
            finish();
              return true;
          }
          
      case R.id.search:
      {
        onSearchRequested();
        return true;
      }
      
      case R.id.refresh:
      {
        Refresh();
        return true;
      }

    }
    return false;
  }
}
Java Source Code List
