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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.telemetry;
import android.content.Context;
import android.content.SharedPreferences;
import org.mozilla.gecko.GeckoSharedPrefs;
import org.mozilla.gecko.PrefsHelper;
import org.mozilla.gecko.PrefsHelper.PrefHandler;
import java.lang.ref.WeakReference;
/**
* Manages getting and setting any preferences related to telemetry.
*
* This class persists any Gecko preferences beyond shutdown so that these values
* can be accessed on the next run before Gecko is started as we expect Telemetry
* to run before Gecko is available.
*/
public class TelemetryPreferences {
private TelemetryPreferences() {}
private static final String GECKO_PREF_SERVER_URL = "toolkit.telemetry.server";
private static final String SHARED_PREF_SERVER_URL = "telemetry-serverUrl";
// Defaults are a mirror of about:config defaults so we can access them before Gecko is available.
private static final String DEFAULT_SERVER_URL = "https://incoming.telemetry.mozilla.org";
private static final String[] OBSERVED_PREFS = {
GECKO_PREF_SERVER_URL,
};
public static String getServerSchemeHostPort(final Context context, final String profileName) {
return getSharedPrefs(context, profileName).getString(SHARED_PREF_SERVER_URL, DEFAULT_SERVER_URL);
}
public static void initPreferenceObserver(final Context context, final String profileName) {
final PrefHandler prefHandler = new TelemetryPrefHandler(context, profileName);
PrefsHelper.addObserver(OBSERVED_PREFS, prefHandler); // gets preference value when gecko starts.
}
private static SharedPreferences getSharedPrefs(final Context context, final String profileName) {
return GeckoSharedPrefs.forProfileName(context, profileName);
}
private static class TelemetryPrefHandler extends PrefsHelper.PrefHandlerBase {
private final WeakReference<Context> contextWeakReference;
private final String profileName;
private TelemetryPrefHandler(final Context context, final String profileName) {
contextWeakReference = new WeakReference<>(context);
this.profileName = profileName;
}
@Override
public void prefValue(final String pref, final String value) {
final Context context = contextWeakReference.get();
if (context == null) {
return;
}
if (!pref.equals(GECKO_PREF_SERVER_URL)) {
throw new IllegalStateException("Unknown preference: " + pref);
}
getSharedPrefs(context, profileName).edit()
.putString(SHARED_PREF_SERVER_URL, value)
.apply();
}
}
}
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