1 files changed, 41 insertions, 0 deletions
diff --git a/java/com/google/android/libraries/mobiledatadownload/internal/AndroidTimeSource.java b/java/com/google/android/libraries/mobiledatadownload/internal/AndroidTimeSource.java
new file mode 100644
index 0000000..71984cb
--- /dev/null
+++ b/java/com/google/android/libraries/mobiledatadownload/internal/AndroidTimeSource.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * 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.libraries.mobiledatadownload.internal;
+
+import android.os.Build.VERSION_CODES;
+import android.os.SystemClock;
+import androidx.annotation.RequiresApi;
+import com.google.android.libraries.mobiledatadownload.TimeSource;
+
+/**
+ * Implementation of {@link com.google.android.libraries.mobiledatadownload.TimeSource} based on
+ * Android platform APIs.
+ */
+
+// necessary since cgal.clock isn't available in 3P
+@RequiresApi(VERSION_CODES.JELLY_BEAN_MR1) // android.os.SystemClock#elapsedRealtimeNanos
+public final class AndroidTimeSource implements TimeSource {
+
+  @Override
+  public long currentTimeMillis() {
+    return System.currentTimeMillis();
+  }
+
+  @Override
+  public long elapsedRealtimeNanos() {
+    return SystemClock.elapsedRealtimeNanos();
+  }
+}