Android Open Source - android-rackspacecloud Backup Server Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.rackspacecloud.android;
/*from  w w w .j a va 2s .  c om*/
import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.impl.client.BasicResponseHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

import com.rackspace.cloud.servers.api.client.Backup;
import com.rackspace.cloud.servers.api.client.CloudServersException;
import com.rackspace.cloud.servers.api.client.Server;
import com.rackspace.cloud.servers.api.client.ServerManager;
import com.rackspace.cloud.servers.api.client.http.HttpBundle;
import com.rackspace.cloud.servers.api.client.parsers.CloudServersFaultXMLParser;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Spinner;
import android.widget.Toast;

public class BackupServerActivity extends GaActivity implements OnItemSelectedListener, OnClickListener {
  
  private Server server;
  private Spinner weeklyBackupSpinner;
  private Spinner dailyBackupSpinner;
  private CheckBox enableCheckBox;
  private String selectedWeeklyBackup;
  private String selectedDailyBackup;
  
  /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        server = (Server) this.getIntent().getExtras().get("server");
        setContentView(R.layout.viewbackup); 
        setupSpinners();
      setupButtons();
      setupCheckBox(); 
    }

    private void setupSpinners(){
      weeklyBackupSpinner = (Spinner) findViewById(R.id.weekly_backup_spinner);
      ArrayAdapter<CharSequence> weeklyAdapter = ArrayAdapter.createFromResource(this, R.array.weeklyBackupValues, android.R.layout.simple_spinner_item);
      weeklyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      weeklyBackupSpinner.setAdapter(weeklyAdapter);
      weeklyBackupSpinner.setOnItemSelectedListener(this);
      
      
      dailyBackupSpinner = (Spinner) findViewById(R.id.daily_backup_spinner);
      ArrayAdapter<CharSequence> dailyAdapter = ArrayAdapter.createFromResource(this, R.array.dailyBackupValues, android.R.layout.simple_spinner_item);
      dailyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      dailyBackupSpinner.setAdapter(dailyAdapter);
      dailyBackupSpinner.setOnItemSelectedListener(this);
    }
    
  private void setupButtons() {
    Button update = (Button) findViewById(R.id.backup_update_button);
    update.setOnClickListener(this);
  }
  
  private void setupCheckBox(){
    enableCheckBox = (CheckBox) findViewById(R.id.enable_backup_checkbox);
  }
  
  private void showAlert(String title, String message) {
      try {
    AlertDialog alert = new AlertDialog.Builder(this).create();
    alert.setTitle(title);
    alert.setMessage(message);
    alert.setButton("OK", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
          return;
      } }); 
    alert.show();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }

  public void onClick(View v) {
    /*
     * server maybe null if another task is
     * currently processing
     */
    if(server == null){
      showAlert("Error", "Server is busy.");
    }
    else{
      trackEvent(CATEGORY_SERVER, EVENT_BACKUP, "", -1);
      new BackupServerTask().execute((Void[]) null);
    }
  }

  public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
    if(parent == weeklyBackupSpinner){
      selectedWeeklyBackup = Backup.getWeeklyValue(pos);
    }
    if(parent == dailyBackupSpinner){
      selectedDailyBackup = Backup.getDailyValue(pos);
    }
    
  }

  public void onNothingSelected(AdapterView<?> parent) {
    //do nothing
  }
  
    private void showToast(String message) {
    Context context = getApplicationContext();
    int duration = Toast.LENGTH_SHORT;
    Toast toast = Toast.makeText(context, message, duration);
    toast.show();
    }
  
  private CloudServersException parseCloudServersException(HttpResponse response) {
    CloudServersException cse = new CloudServersException();
    try {
        BasicResponseHandler responseHandler = new BasicResponseHandler();
        String body = responseHandler.handleResponse(response);
        CloudServersFaultXMLParser parser = new CloudServersFaultXMLParser();
        SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
        XMLReader xmlReader = saxParser.getXMLReader();
        xmlReader.setContentHandler(parser);
        xmlReader.parse(new InputSource(new StringReader(body)));          
        cse = parser.getException();          
    } catch (ClientProtocolException e) {
      cse = new CloudServersException();
      cse.setMessage(e.getLocalizedMessage());
    } catch (IOException e) {
      cse = new CloudServersException();
      cse.setMessage(e.getLocalizedMessage());
    } catch (ParserConfigurationException e) {
      cse = new CloudServersException();
      cse.setMessage(e.getLocalizedMessage());
    } catch (SAXException e) {
      cse = new CloudServersException();
      cse.setMessage(e.getLocalizedMessage());
    } catch (FactoryConfigurationError e) {
      cse = new CloudServersException();
      cse.setMessage(e.getLocalizedMessage());
    }
    return cse;
    }
  
  private void startServerError(String message, HttpBundle bundle){
    Intent viewIntent = new Intent(getApplicationContext(), ServerErrorActivity.class);
    viewIntent.putExtra("errorMessage", message);
    viewIntent.putExtra("response", bundle.getResponseText());
    viewIntent.putExtra("request", bundle.getCurlRequest());
    startActivity(viewIntent);
  }
  
  private class BackupServerTask extends AsyncTask<Void, Void, HttpBundle> {
      
    private CloudServersException exception;
    
    @Override
    //let user know their process has started
    protected void onPreExecute(){
      showToast("Changing backup schedule process has begun");
    }
    
    @Override
    protected HttpBundle doInBackground(Void... arg0) {
      HttpBundle bundle = null;
      try {
        bundle = (new ServerManager()).backup(server, selectedWeeklyBackup, selectedDailyBackup, enableCheckBox.isChecked(), getApplicationContext());
      } catch (CloudServersException e) {
        exception = e;
      }
      return bundle;
    }
      
    @Override
    protected void onPostExecute(HttpBundle bundle) {
      HttpResponse response = bundle.getResponse();
      if (response != null) {
        int statusCode = response.getStatusLine().getStatusCode();  
        Log.d("statuscode", Integer.toString(statusCode));
        if(statusCode == 204 || statusCode == 202){
          showToast("The server's backup schedule has been change.");
          finish();
        }
        else if (statusCode != 204 && statusCode != 202) {
          CloudServersException cse = parseCloudServersException(response);
          if ("".equals(cse.getMessage())) {
            startServerError("There was a problem changing the backup schedule.", bundle);
          } else {
            Log.d("info", "here");
            startServerError("There was a problem changing the backup schedule: " + cse.getMessage() + " " + statusCode, bundle);
          }
        }
      } else if (exception != null) {
        startServerError("There was a problem changing the backup schedule: " + exception.getMessage(), bundle);
        
      }
    }
    }
}

Java Source Code List

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