Event logging for lockdown VPN state changes.

Bug: 7079350
Change-Id: I3670efe7f09c0fca55552b6a04a2be159b9beb3c

Author: jsharkey

services/java/com/android/server/EventLogTags.logtags

@@ -148,3 +148,11 @@ option java_package com.android.server
 # ---------------------------
 51100 netstats_mobile_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3)
 51101 netstats_wifi_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3)
+
+
+# ---------------------------
+# LockdownVpnTracker.java
+# ---------------------------
+51200 lockdown_vpn_connecting (egress_net|1)
+51201 lockdown_vpn_connected (egress_net|1)
+51202 lockdown_vpn_error (egress_net|1)

services/java/com/android/server/net/LockdownVpnTracker.java

@@ -41,6 +41,7 @@
 import com.android.internal.net.VpnProfile;
 import com.android.internal.util.Preconditions;
 import com.android.server.ConnectivityService;
+import com.android.server.EventLogTags;
 import com.android.server.connectivity.Vpn;
 
 /**
@@ -122,12 +123,18 @@ private void handleStateChangedLocked() {
         }
         if (egressDisconnected) return;
 
+        final int egressType = egressInfo.getType();
+        if (vpnInfo.getDetailedState() == DetailedState.FAILED) {
+            EventLogTags.writeLockdownVpnError(egressType);
+        }
+
         if (mErrorCount > MAX_ERROR_COUNT) {
             showNotification(R.string.vpn_lockdown_error, R.drawable.vpn_disconnected);
 
         } else if (egressInfo.isConnected() && !vpnInfo.isConnectedOrConnecting()) {
             if (mProfile.isValidLockdownProfile()) {
                 Slog.d(TAG, "Active network connected; starting VPN");
+                EventLogTags.writeLockdownVpnConnecting(egressType);
                 showNotification(R.string.vpn_lockdown_connecting, R.drawable.vpn_disconnected);
 
                 mAcceptedEgressIface = egressProp.getInterfaceName();
@@ -148,6 +155,7 @@ private void handleStateChangedLocked() {
             }
 
             Slog.d(TAG, "VPN connected using iface=" + iface + ", sourceAddr=" + sourceAddr);
+            EventLogTags.writeLockdownVpnConnected(egressType);
             showNotification(R.string.vpn_lockdown_connected, R.drawable.vpn_connected);
 
             try {