ExceptionReportTask.java

/*
 * Copyright (C) 2009 University of Washington
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.commcare.android.tasks;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.IllegalCharsetNameException;
import java.nio.charset.UnsupportedCharsetException;
import java.util.Date;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.entity.mime.MIME;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.StringBody;
import org.commcare.android.database.user.models.User;
import org.commcare.android.javarosa.AndroidLogEntry;
import org.commcare.android.javarosa.AndroidLogSerializer;
import org.commcare.android.javarosa.DeviceReportWriter;
import org.commcare.android.net.HttpRequestGenerator;
import org.commcare.dalvik.R;
import org.commcare.dalvik.application.CommCareApplication;

import android.content.SharedPreferences;
import android.os.AsyncTask;


/**
 * Background task for uploading completed forms.
 * 
 * @author csims@dimagi.com
 * 
 **/

public class ExceptionReportTask extends AsyncTask<Throwable, String, String>  
{
    /*
     * (non-Javadoc)
     * @see android.os.AsyncTask#doInBackground(java.lang.Object[])
     */
    @Override
    protected String doInBackground(Throwable... values) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        
        //TODO: This is ridiculous. Just do the normal log submission process
        DeviceReportWriter report;
        try{
            report = new DeviceReportWriter(baos);
        } catch(IOException e){
            report = null;
        }
        

        String fallbacktext = null;
        for(Throwable ex : values) {
            String exceptionText = getStackTrace(ex);
            if(fallbacktext == null) {
                fallbacktext = exceptionText;
            }
            if(report != null) {
                report.addReportElement(new AndroidLogSerializer(new AndroidLogEntry("forceclose", exceptionText, new Date())));
            }
        }
        
        byte[] data;
        try {
            if(report == null) { throw new IOException();}
            report.write();
            data = baos.toByteArray();
        } catch (IOException e) {
            //_weak_
            e.printStackTrace();
            String fsDate = new Date().toString();
            data = ("<?xml version='1.0' ?><n0:device_report xmlns:n0=\"http://code.javarosa.org/devicereport\"><device_id>FAILSAFE</device_id><report_date>" + fsDate +"</report_date><log_subreport><log_entry date=\"" + fsDate + "\"><entry_type>forceclose</entry_type><entry_message>" + fallbacktext + "</entry_message></log_entry></log_subreport></device_report>").getBytes();
        }
        
        String URI = CommCareApplication._().getString(R.string.PostURL);
        try {
            SharedPreferences settings = CommCareApplication._().getCurrentApp().getAppPreferences();
            URI = settings.getString("PostURL", CommCareApplication._().getString(R.string.PostURL));
        } catch(Exception e) {
            //D-oh. Really?
        }
        
        
        //TODO: Send this with the standard logging subsystem
        String payload = new String(data);
        System.out.println("Outgoing payload: " + payload);
        
        MultipartEntity entity = new MultipartEntity();
        try {
            //Apparently if you don't have a filename in the multipart wrapper, some receivers
            //don't properly receive this post.
            StringBody body = new StringBody(payload, "text/xml", MIME.DEFAULT_CHARSET) {
                /*
                 * (non-Javadoc)
                 * @see org.apache.http.entity.mime.content.StringBody#getFilename()
                 */
                @Override
                public String getFilename() {
                    return "exceptionreport.xml";
                }
            };
            entity.addPart("xml_submission_file", body);
        } catch (IllegalCharsetNameException e1) {
            e1.printStackTrace();
        } catch (UnsupportedCharsetException e1) {
            e1.printStackTrace();
        } catch (UnsupportedEncodingException e1) {
            e1.printStackTrace();
        }
        
        HttpRequestGenerator generator;
        try {
            User user = CommCareApplication._().getSession().getLoggedInUser();
            if(user.getUserType().equals(User.TYPE_DEMO)) {
                generator = new HttpRequestGenerator();
            } else {
                generator = new HttpRequestGenerator(user);
            }
        } catch(Exception e){
            generator = new HttpRequestGenerator();
        }
        
        
        try {
            HttpResponse response = generator.postData(URI, entity);
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            response.getEntity().writeTo(bos);
            System.out.println("Response: " + new String(bos.toByteArray()));
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //We seem to have to return something...
        return null;
    }
    
    public static String getStackTrace(Throwable e) {
        return getStackTrace(e, false);
    }
    
    
    public static String getStackTrace(Throwable e, boolean fullContext) {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        e.printStackTrace(new PrintStream(bos));
        String retString = new String(bos.toByteArray());
        if(fullContext && e.getCause() != null) {
            //Because sometimes it doesn't print us enough context.
            retString += "Sub Context: \n" + getStackTrace(e.getCause(), false);
        }
        return retString;
    }
    
}