SyncAdapter.java

/*
 * Copyright 2012 Google Inc.
 *
 * 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 com.google.android.apps.iosched.sync;

import static com.google.android.apps.iosched.util.LogUtils.LOGE;
import static com.google.android.apps.iosched.util.LogUtils.LOGI;
import static com.google.android.apps.iosched.util.LogUtils.makeLogTag;

import java.io.IOException;
import java.io.InputStream;
import java.util.regex.Pattern;
import java.util.zip.GZIPInputStream;

import org.apache.http.Header;
import org.apache.http.HeaderElement;
import org.apache.http.HttpEntity;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.HttpResponse;
import org.apache.http.HttpResponseInterceptor;
import org.apache.http.client.HttpClient;
import org.apache.http.entity.HttpEntityWrapper;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HttpContext;

import android.accounts.Account;
import android.content.AbstractThreadedSyncAdapter;
import android.content.ContentProviderClient;
import android.content.ContentResolver;
import android.content.Context;
import android.content.SyncResult;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.text.format.DateUtils;

import com.google.android.apps.iosched.BuildConfig;
import com.google.android.apps.iosched.io.gdocs.LocalExecutor;
import com.google.android.apps.iosched.io.gdocs.RemoteExecutor;
import com.google.android.apps.iosched.util.AccountUtils;

/**
 * Sync adapter for Google I/O data. Note that this sync adapter makes heavy use of a
 * "conference API" that is not currently open source.
 */
public class SyncAdapter extends AbstractThreadedSyncAdapter {

    private static final String TAG = makeLogTag(SyncAdapter.class);

    private static final Pattern sSanitizeAccountNamePattern = Pattern.compile("(.).*?(.?)@");

    private final Context mContext;
    private SyncHelper mSyncHelper;
    


    public SyncAdapter(Context context, boolean autoInitialize) {
        super(context, autoInitialize);
        mContext = context;

        //noinspection ConstantConditions,PointlessBooleanExpression
        if (!BuildConfig.DEBUG) {
            Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
                @Override
                public void uncaughtException(Thread thread, Throwable throwable) {
                    LOGE(TAG, "Uncaught sync exception, suppressing UI in release build.",
                            throwable);
                }
            });
        }
        
    }

    @Override
    public void onPerformSync(final Account account, Bundle extras, String authority,
            final ContentProviderClient provider, final SyncResult syncResult) {
        final boolean uploadOnly = extras.getBoolean(ContentResolver.SYNC_EXTRAS_UPLOAD, false);
        final boolean manualSync = extras.getBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, false);
        final boolean initialize = extras.getBoolean(ContentResolver.SYNC_EXTRAS_INITIALIZE, false);

        final String logSanitizedAccountName = sSanitizeAccountNamePattern
                .matcher(account.name).replaceAll("$1...$2@");

        if (uploadOnly) {
            return;
        }

        LOGI(TAG, "Beginning sync for account " + logSanitizedAccountName + "," +
                " uploadOnly=" + uploadOnly +
                " manualSync=" + manualSync +
                " initialize=" + initialize);

        if (initialize) {
            String chosenAccountName = AccountUtils.getChosenAccountName(mContext);
            boolean isChosenAccount =
                    chosenAccountName != null && chosenAccountName.equals(account.name);
            ContentResolver.setIsSyncable(account, authority, isChosenAccount ? 1 : 0);
            if (!isChosenAccount) {
                ++syncResult.stats.numAuthExceptions;
                return;
            }
        }

        // Perform a sync using SyncHelper
        if (mSyncHelper == null) {
            mSyncHelper = new SyncHelper(mContext);
        }

        try {
            mSyncHelper.performSync(syncResult,
                    SyncHelper.FLAG_SYNC_LOCAL | SyncHelper.FLAG_SYNC_REMOTE);

        } catch (IOException e) {
            ++syncResult.stats.numIoExceptions;
            LOGE(TAG, "Error syncing data for I/O 2012.", e);
        }
    }
    
    
        
}