Data Usage public API

Added new API consisting of android.app.usage.NetworkUsageManager and
android.app.usage.NetworkUsageStats. Through them data usage on a
network interface can be programmatically queried. Both summary and
details are available.

Bug: 19208876
Change-Id: I0e0c4b37ae23ad1e589d4b0c955b93f28ba4333e

2 files changed, 14 insertions, 0 deletions

diff --git a/core/java/android/net/INetworkStatsService.aidl b/core/java/android/net/INetworkStatsService.aidl
index 2c3881c..6436e42 100644
--- a/core/java/android/net/INetworkStatsService.aidl
+++ b/core/java/android/net/INetworkStatsService.aidl
@@ -27,6 +27,14 @@ interface INetworkStatsService {
     /** Start a statistics query session. */
     INetworkStatsSession openSession();
 
+    /** Start a statistics query session. If calling package is profile or device owner then it is
+     *  granted automatic access if apiLevel is NetworkStatsManager.API_LEVEL_DPC_ALLOWED. If
+     *  apiLevel is at least NetworkStatsManager.API_LEVEL_REQUIRES_PACKAGE_USAGE_STATS then
+     *  PACKAGE_USAGE_STATS permission is always checked. If PACKAGE_USAGE_STATS is not granted
+     *  READ_NETWORK_USAGE_STATS is checked for.
+     */
+    INetworkStatsSession openSessionForUsageStats(String callingPackage);
+
     /** Return network layer usage total for traffic that matches template. */
     long getNetworkTotalBytes(in NetworkTemplate template, long start, long end);
 
diff --git a/core/java/android/net/INetworkStatsSession.aidl b/core/java/android/net/INetworkStatsSession.aidl
index 1596fa2..7bcb043 100644
--- a/core/java/android/net/INetworkStatsSession.aidl
+++ b/core/java/android/net/INetworkStatsSession.aidl
@@ -23,6 +23,9 @@ import android.net.NetworkTemplate;
 /** {@hide} */
 interface INetworkStatsSession {
 
+    /** Return device aggregated network layer usage summary for traffic that matches template. */
+    NetworkStats getDeviceSummaryForNetwork(in NetworkTemplate template, long start, long end);
+
     /** Return network layer usage summary for traffic that matches template. */
     NetworkStats getSummaryForNetwork(in NetworkTemplate template, long start, long end);
     /** Return historical network layer stats for traffic that matches template. */
@@ -33,6 +36,9 @@ interface INetworkStatsSession {
     /** Return historical network layer stats for specific UID traffic that matches template. */
     NetworkStatsHistory getHistoryForUid(in NetworkTemplate template, int uid, int set, int tag, int fields);
 
+    /** Return array of uids that have stats and are accessible to the calling user */
+    int[] getRelevantUids();
+
     void close();
 
 }