Synnefo » Pithos Android Client

package com.rackspacecloud.android;

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);

                        }

                }

    }

}