Metrics: Log SMP pairing commands

* Log SMP pairing commands and pairing failure reasons

Bug: 112969790
Test: make, testdrive with statsd
Change-Id: I51ae2af981a687954f7de3cee3caacce43d782b6

1 files changed, 22 insertions, 0 deletions

diff --git a/system/common/metrics.cc b/system/common/metrics.cc
index 9cbef5e49f..1f6653861b 100644
--- a/system/common/metrics.cc
+++ b/system/common/metrics.cc
@@ -735,6 +735,28 @@ void LogReadTxPowerLevelResult(const RawAddress& address, uint16_t handle,
   }
 }
 
+void LogSmpPairingEvent(const RawAddress& address, uint8_t smp_cmd,
+                        android::bluetooth::DirectionEnum direction,
+                        uint8_t smp_fail_reason) {
+  std::string obfuscated_id;
+  if (!address.IsEmpty()) {
+    obfuscated_id = AddressObfuscator::GetInstance()->Obfuscate(address);
+  }
+  // nullptr and size 0 represent missing value for obfuscated_id
+  android::util::BytesField obfuscated_id_field(
+      address.IsEmpty() ? nullptr : obfuscated_id.c_str(),
+      address.IsEmpty() ? 0 : obfuscated_id.size());
+  int ret = android::util::stats_write(
+      android::util::BLUETOOTH_SMP_PAIRING_EVENT_REPORTED, obfuscated_id_field,
+      smp_cmd, direction, smp_fail_reason);
+  if (ret < 0) {
+    LOG(WARNING) << __func__ << ": failed for " << address << ", smp_cmd "
+                 << loghex(smp_cmd) << ", direction " << direction
+                 << ", smp_fail_reason " << loghex(smp_fail_reason)
+                 << ", error " << ret;
+  }
+}
+
 }  // namespace common
 
 }  // namespace bluetooth