1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/background/announcements/AnnouncementsFetcher.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,134 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +package org.mozilla.gecko.background.announcements;
1.9 +
1.10 +import java.io.UnsupportedEncodingException;
1.11 +import java.net.URI;
1.12 +import java.net.URISyntaxException;
1.13 +import java.net.URLEncoder;
1.14 +
1.15 +import org.mozilla.gecko.background.common.GlobalConstants;
1.16 +import org.mozilla.gecko.background.common.log.Logger;
1.17 +import org.mozilla.gecko.sync.net.BaseResource;
1.18 +
1.19 +public class AnnouncementsFetcher {
1.20 + private static final String LOG_TAG = "AnnounceFetch";
1.21 + private static final long MILLISECONDS_PER_DAY = 24 * 60 * 60 * 1000;
1.22 +
1.23 + public static URI getSnippetURI(String base, String channel,
1.24 + String version, String platform,
1.25 + int idleDays)
1.26 + throws URISyntaxException {
1.27 + try {
1.28 + final String c = URLEncoder.encode(channel, "UTF-8");
1.29 + final String v = URLEncoder.encode(version, "UTF-8");
1.30 + final String p = URLEncoder.encode(platform, "UTF-8");
1.31 + final String s = base + c + "/" + v + "/" + p + ((idleDays == -1) ? "" : ("?idle=" + idleDays));
1.32 + return new URI(s);
1.33 + } catch (UnsupportedEncodingException e) {
1.34 + // Nonsense.
1.35 + return null;
1.36 + }
1.37 + }
1.38 +
1.39 + public static URI getAnnounceURI(final String baseURL, final long lastLaunch) throws URISyntaxException {
1.40 + final String channel = getChannel();
1.41 + final String version = getVersion();
1.42 + final String platform = getPlatform();
1.43 + final int idleDays = getIdleDays(lastLaunch);
1.44 +
1.45 + Logger.debug(LOG_TAG, "Fetch URI: idle for " + idleDays + " days.");
1.46 + return getSnippetURI(baseURL, channel, version, platform, idleDays);
1.47 + }
1.48 +
1.49 + protected static String getChannel() {
1.50 + return AnnouncementsConstants.ANNOUNCE_CHANNEL;
1.51 + }
1.52 +
1.53 + protected static String getVersion() {
1.54 + return GlobalConstants.MOZ_APP_VERSION;
1.55 + }
1.56 +
1.57 + protected static String getPlatform() {
1.58 + return GlobalConstants.ANDROID_CPU_ARCH;
1.59 + }
1.60 +
1.61 + /**
1.62 + * Return the number of days that we've been idle, assuming that we have a
1.63 + * sane last launch time and the current time is within range. If no sane idle
1.64 + * time can be returned, we return -1.
1.65 + *
1.66 + * @param lastLaunch
1.67 + * Time at which the browser was last launched, in milliseconds since epoch.
1.68 + * @param now
1.69 + * Milliseconds since epoch for which idle time should be calculated.
1.70 + * @return number of idle days, or -1 if out of range.
1.71 + */
1.72 + protected static int getIdleDays(final long lastLaunch, final long now) {
1.73 + if (lastLaunch <= 0) {
1.74 + return -1;
1.75 + }
1.76 +
1.77 + if (now < GlobalConstants.BUILD_TIMESTAMP_MSEC) {
1.78 + Logger.warn(LOG_TAG, "Current time " + now + " earlier than build date. Not calculating idle.");
1.79 + return -1;
1.80 + }
1.81 +
1.82 + if (now < lastLaunch) {
1.83 + Logger.warn(LOG_TAG, "Current time " + now + " earlier than last launch! Not calculating idle.");
1.84 + return -1;
1.85 + }
1.86 +
1.87 + final long idleMillis = now - lastLaunch;
1.88 + final int idleDays = (int) (idleMillis / MILLISECONDS_PER_DAY);
1.89 +
1.90 + if (idleDays > AnnouncementsConstants.MAX_SANE_IDLE_DAYS) {
1.91 + Logger.warn(LOG_TAG, "Idle from " + lastLaunch + " until " + now +
1.92 + ", which is insane. Not calculating idle.");
1.93 + return -1;
1.94 + }
1.95 +
1.96 + return idleDays;
1.97 + }
1.98 +
1.99 + /**
1.100 + * Return the number of days that we've been idle, assuming that we have a
1.101 + * sane last launch time and the current time is within range. If no sane idle
1.102 + * time can be returned, we return -1.
1.103 + * The current time will be calculated from {@link System#currentTimeMillis()}.
1.104 + *
1.105 + * @param lastLaunch
1.106 + * Unix timestamp at which the browser was last launched.
1.107 + * @return number of idle days, or -1 if out of range.
1.108 + */
1.109 + protected static int getIdleDays(final long lastLaunch) {
1.110 + final long now = System.currentTimeMillis();
1.111 + return getIdleDays(lastLaunch, now);
1.112 + }
1.113 +
1.114 + public static void fetchAnnouncements(URI uri, AnnouncementsFetchDelegate delegate) {
1.115 + BaseResource r = new BaseResource(uri);
1.116 + r.delegate = new AnnouncementsFetchResourceDelegate(r, delegate);
1.117 + r.getBlocking();
1.118 + }
1.119 +
1.120 + /**
1.121 + * Synchronous.
1.122 + */
1.123 + public static void fetchAndProcessAnnouncements(long lastLaunch,
1.124 + AnnouncementsFetchDelegate delegate) {
1.125 + final long now = System.currentTimeMillis();
1.126 + Logger.debug(LOG_TAG, "Fetching announcements. Last launch: " + lastLaunch + "; now: " + now);
1.127 + try {
1.128 + final String base = delegate.getServiceURL();
1.129 + final URI uri = getAnnounceURI(base, lastLaunch);
1.130 + Logger.info(LOG_TAG, "Fetching announcements from " + uri.toASCIIString());
1.131 + fetchAnnouncements(uri, delegate);
1.132 + } catch (URISyntaxException e) {
1.133 + Logger.warn(LOG_TAG, "Couldn't create URL.", e);
1.134 + return;
1.135 + }
1.136 + }
1.137 +}
