Move data stall definitions out from Setting

From mainline perspective, we should use android flag api
instead of using Settings. Thus, move the definitions into
NetworkStack.

Bug:120013793
Test: atest NetworkStackTests SettingsBackupTest
Change-Id: I8e1fb5b47fff3bf624131ba1f5732daabd991e6d
Merged-In: I8e1fb5b47fff3bf624131ba1f5732daabd991e6d
Merged-In: I0a2a1e5d3de14ea86556ca471e26064df3481412

1 files changed, 21 insertions, 0 deletions

diff --git a/src/android/net/util/NetworkStackUtils.java b/src/android/net/util/NetworkStackUtils.java
index ee83a85..fa8f65e 100644
--- a/src/android/net/util/NetworkStackUtils.java
+++ b/src/android/net/util/NetworkStackUtils.java
@@ -31,6 +31,9 @@ import java.util.function.Predicate;
  * Collection of utilities for the network stack.
  */
 public class NetworkStackUtils {
+    // TODO: Refer to DeviceConfig definition.
+    public static final String NAMESPACE_CONNECTIVITY = "connectivity";
+
     static {
         System.loadLibrary("networkstackutilsjni");
     }
@@ -103,6 +106,24 @@ public class NetworkStackUtils {
     }
 
     /**
+     * Look up the value of a property for a particular namespace from {@link DeviceConfig}.
+     * @param namespace The namespace containing the property to look up.
+     * @param name The name of the property to look up.
+     * @param defaultValue The value to return if the property does not exist or has no non-null
+     *                     value.
+     * @return the corresponding value, or defaultValue if none exists.
+     */
+    public static int getDeviceConfigPropertyInt(@NonNull String namespace, @NonNull String name,
+            int defaultValue) {
+        String value = getDeviceConfigProperty(namespace, name, null /* defaultValue */);
+        try {
+            return (value != null) ? Integer.parseInt(value) : defaultValue;
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
+    /**
      * Attaches a socket filter that accepts DHCP packets to the given socket.
      */
     public static native void attachDhcpFilter(FileDescriptor fd) throws SocketException;