Wireframe scheduler implementation

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundScheduler.java

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.offlinepages;
+
+import android.content.Context;
+import android.os.Bundle;
+
+import com.google.android.gms.gcm.GcmNetworkManager;
+import com.google.android.gms.gcm.OneoffTask;
+import com.google.android.gms.gcm.Task;
+
+import org.chromium.chrome.browser.ChromeBackgroundService;
+
+import java.util.Date;
+
+/**
+ * The background scheduler class is for setting GCM Network Manager tasks.
+ */
+public class BackgroundScheduler {
+    /** Bundle key for the timestamp in milliseconds when the request started. */
+    public static final String DATE_TAG = "Date";
+    private static final long ONE_WEEK_IN_SECONDS = 60 * 60 * 24 * 7;
+
+    /**
+     * For the given Triggering conditions, start a new GCM Network Manager request.
+     */
+    public static void schedule(Context context) {
+        // Get the GCM Network Scheduler.
+        GcmNetworkManager gcmNetworkManager = GcmNetworkManager.getInstance(context);
+
+        // TODO(petewil): Today this puts timestamp, add triggering conditions into bundle.
+        // Triggering conditions will include network state and charging requirements, maybe
+        // also battery percentage.
+        Bundle taskExtras = new Bundle();
+        Date now = new Date();
+        taskExtras.putLong(DATE_TAG, now.getTime());
+
+        // Create a task.
+        Task task = new OneoffTask.Builder()
+                .setService(ChromeBackgroundService.class)
+                .setExecutionWindow(0, ONE_WEEK_IN_SECONDS)
+                .setTag(OfflinePageUtils.TASK_TAG)
+                .setUpdateCurrent(true)
+                .setRequiredNetwork(Task.NETWORK_STATE_CONNECTED)
+                .setRequiresCharging(false)
+                .setExtras(taskExtras)
+                .build();
+
+        // Schedule the task.
+        gcmNetworkManager.schedule(task);
+    }
+
+    /**
+     * Cancel any outstanding GCM Network Manager requests.
+     */
+    public static void unschedule(Context context) {
+        // TODO(petewil): Take our task off the task queue.
+    }
+}