1 files changed, 86 insertions, 0 deletions
diff --git a/mobile/android/services/src/main/java/org/mozilla/gecko/sync/PersistedMetaGlobal.java b/mobile/android/services/src/main/java/org/mozilla/gecko/sync/PersistedMetaGlobal.java
new file mode 100644
index 000000000..d3467545c
--- /dev/null
+++ b/mobile/android/services/src/main/java/org/mozilla/gecko/sync/PersistedMetaGlobal.java
@@ -0,0 +1,86 @@
+/* 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.sync;
+
+import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.sync.net.AuthHeaderProvider;
+
+import android.content.SharedPreferences;
+
+public class PersistedMetaGlobal {
+  public static final String LOG_TAG = "PersistedMetaGlobal";
+
+  public static final String META_GLOBAL_SERVER_RESPONSE_BODY = "metaGlobalServerResponseBody";
+  public static final String META_GLOBAL_LAST_MODIFIED        = "metaGlobalLastModified";
+
+  protected SharedPreferences prefs;
+
+  public PersistedMetaGlobal(SharedPreferences prefs) {
+    this.prefs = prefs;
+  }
+
+  /**
+   * Sets a <code>MetaGlobal</code> from persisted prefs.
+   *
+   * @param metaUrl
+   *          meta/global server URL
+   * @param credentials
+   *          Sync credentials
+   *
+   * @return <MetaGlobal> set from previously fetched meta/global record from
+   *         server
+   */
+  public MetaGlobal metaGlobal(String metaUrl, AuthHeaderProvider authHeaderProvider) {
+    String json = prefs.getString(META_GLOBAL_SERVER_RESPONSE_BODY, null);
+    if (json == null) {
+      return null;
+    }
+    MetaGlobal metaGlobal = null;
+    try {
+      CryptoRecord cryptoRecord = CryptoRecord.fromJSONRecord(json);
+      MetaGlobal mg = new MetaGlobal(metaUrl, authHeaderProvider);
+      mg.setFromRecord(cryptoRecord);
+      metaGlobal = mg;
+    } catch (Exception e) {
+      Logger.warn(LOG_TAG, "Got exception decrypting persisted meta/global.", e);
+    }
+    return metaGlobal;
+  }
+
+  public void persistMetaGlobal(MetaGlobal metaGlobal) {
+    if (metaGlobal == null) {
+      Logger.debug(LOG_TAG, "Clearing persisted meta/global.");
+      prefs.edit().remove(META_GLOBAL_SERVER_RESPONSE_BODY).commit();
+      return;
+    }
+    try {
+      CryptoRecord cryptoRecord = metaGlobal.asCryptoRecord();
+      String json = cryptoRecord.toJSONString();
+      Logger.debug(LOG_TAG, "Persisting meta/global.");
+      prefs.edit().putString(META_GLOBAL_SERVER_RESPONSE_BODY, json).commit();
+    } catch (Exception e) {
+      Logger.warn(LOG_TAG, "Got exception encrypting while persisting meta/global.", e);
+    }
+  }
+
+  public long lastModified() {
+    return prefs.getLong(META_GLOBAL_LAST_MODIFIED, -1);
+  }
+
+  public void persistLastModified(long lastModified) {
+    if (lastModified <= 0) {
+      Logger.debug(LOG_TAG, "Clearing persisted meta/global last modified timestamp.");
+      prefs.edit().remove(META_GLOBAL_LAST_MODIFIED).commit();
+      return;
+    }
+    Logger.debug(LOG_TAG, "Persisting meta/global last modified timestamp " + lastModified + ".");
+    prefs.edit().putLong(META_GLOBAL_LAST_MODIFIED, lastModified).commit();
+  }
+
+  public void purge() {
+    persistLastModified(-1);
+    persistMetaGlobal(null);
+  }
+}