Make native metrics logger write to statsd socket

Previous submission of this change, aosp/790068, caused a failure in
sdk_mac for CLOCK_REALTIME and <endian.h> not being available.

Bug: 110537511
Test: compiles without failures and verified the correct metric
Change-Id: Iba1dc920ad82e88a4bcdd2feaee9a06202a440c2

libmetricslogger/Android.bp

@@ -11,7 +11,11 @@ cc_defaults {
 
     export_include_dirs: ["include"],
     local_include_dirs: ["include"],
-    shared_libs: ["liblog"],
+    shared_libs: [
+        "libbase",
+        "liblog",
+        "libstatssocket",
+    ],
     whole_static_libs: ["libgtest_prod"],
 
     cflags: [
@@ -23,17 +27,20 @@ cc_defaults {
 
 // metricslogger shared library
 // -----------------------------------------------------------------------------
-cc_library_shared {
+cc_library {
     name: "libmetricslogger",
     srcs: metricslogger_lib_src_files,
     defaults: ["metricslogger_defaults"],
+    export_shared_lib_headers: ["libstatssocket"],
 }
 
 // static version of libmetricslogger, needed by a few art static binaries
+// TODO(b/117829226): Remove once dependencies are cleaned up.
 cc_library_static {
     name: "libmetricslogger_static",
     srcs: metricslogger_lib_src_files,
     defaults: ["metricslogger_defaults"],
+    export_shared_lib_headers: ["libstatssocket"],
 }
 
 // metricslogger shared library, debug

libmetricslogger/include/metricslogger/metrics_logger.h

@@ -15,6 +15,7 @@
  */
 
 #include <log/log_event_list.h>
+#include <stats_event_list.h>
 #include <cstdint>
 #include <string>
 
@@ -43,6 +44,7 @@ void LogMultiAction(int32_t category, int32_t field, const std::string& value);
 class ComplexEventLogger {
   private:
     android_log_event_list logger;
+    stats_event_list stats_logger;
 
   public:
     // Create a complex event with category|category|.

libmetricslogger/metrics_logger.cpp

@@ -18,11 +18,15 @@
 
 #include <cstdlib>
 
+#include <android-base/chrono_utils.h>
 #include <log/event_tag_map.h>
-#include <log/log_event_list.h>
+
+using namespace android;
 
 namespace {
 
+const static int kStatsEventTag = 1937006964;
+const static int kKeyValuePairAtomId = 83;
 #ifdef __ANDROID__
 EventTagMap* kEventTagMap = android_openEventTagMap(nullptr);
 const int kSysuiMultiActionTag = android_lookupEventTagNum(
@@ -32,6 +36,12 @@ const int kSysuiMultiActionTag = android_lookupEventTagNum(
 const int kSysuiMultiActionTag = 0;
 #endif
 
+int64_t getElapsedTimeNanoSinceBoot() {
+    return std::chrono::duration_cast<std::chrono::nanoseconds>(
+                   android::base::boot_clock::now().time_since_epoch())
+            .count();
+}
+
 }  // namespace
 
 namespace android {
@@ -42,6 +52,12 @@ void LogHistogram(const std::string& event, int32_t data) {
     android_log_event_list log(kSysuiMultiActionTag);
     log << LOGBUILDER_CATEGORY << LOGBUILDER_HISTOGRAM << LOGBUILDER_NAME << event
         << LOGBUILDER_BUCKET << data << LOGBUILDER_VALUE << 1 << LOG_ID_EVENTS;
+
+    stats_event_list stats_log(kStatsEventTag);
+    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
+              << LOGBUILDER_HISTOGRAM << LOGBUILDER_NAME << event << LOGBUILDER_BUCKET << data
+              << LOGBUILDER_VALUE << 1;
+    stats_log.write(LOG_ID_STATS);
 }
 
 // Mirror com.android.internal.logging.MetricsLogger#count().
@@ -49,6 +65,11 @@ void LogCounter(const std::string& name, int32_t val) {
     android_log_event_list log(kSysuiMultiActionTag);
     log << LOGBUILDER_CATEGORY << LOGBUILDER_COUNTER << LOGBUILDER_NAME << name << LOGBUILDER_VALUE
         << val << LOG_ID_EVENTS;
+
+    stats_event_list stats_log(kStatsEventTag);
+    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
+              << LOGBUILDER_COUNTER << LOGBUILDER_NAME << name << LOGBUILDER_VALUE << val;
+    stats_log.write(LOG_ID_STATS);
 }
 
 // Mirror com.android.internal.logging.MetricsLogger#action().
@@ -56,34 +77,48 @@ void LogMultiAction(int32_t category, int32_t field, const std::string& value) {
     android_log_event_list log(kSysuiMultiActionTag);
     log << LOGBUILDER_CATEGORY << category << LOGBUILDER_TYPE << TYPE_ACTION
         << field << value << LOG_ID_EVENTS;
+
+    stats_event_list stats_log(kStatsEventTag);
+    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
+              << category << LOGBUILDER_TYPE << TYPE_ACTION << field << value;
+    stats_log.write(LOG_ID_STATS);
 }
 
-ComplexEventLogger::ComplexEventLogger(int category) : logger(kSysuiMultiActionTag) {
+ComplexEventLogger::ComplexEventLogger(int category)
+    : logger(kSysuiMultiActionTag), stats_logger(kStatsEventTag) {
     logger << LOGBUILDER_CATEGORY << category;
+    stats_logger << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
+                 << category;
 }
 
 void ComplexEventLogger::SetPackageName(const std::string& package_name) {
     logger << LOGBUILDER_PACKAGENAME << package_name;
+    stats_logger << LOGBUILDER_PACKAGENAME << package_name;
 }
 
 void ComplexEventLogger::AddTaggedData(int tag, int32_t value) {
     logger << tag << value;
+    stats_logger << tag << value;
 }
 
 void ComplexEventLogger::AddTaggedData(int tag, const std::string& value) {
     logger << tag << value;
+    stats_logger << tag << value;
 }
 
 void ComplexEventLogger::AddTaggedData(int tag, int64_t value) {
     logger << tag << value;
+    stats_logger << tag << value;
 }
 
 void ComplexEventLogger::AddTaggedData(int tag, float value) {
     logger << tag << value;
+    stats_logger << tag << value;
 }
 
 void ComplexEventLogger::Record() {
     logger << LOG_ID_EVENTS;
+    stats_logger.write(LOG_ID_STATS);
 }
 
 }  // namespace metricslogger

libstats/Android.bp

@@ -17,12 +17,13 @@
 // ==========================================================
 // Native library to write stats log to statsd socket
 // ==========================================================
-cc_library_static {
+cc_library {
     name: "libstatssocket",
     srcs: [
         "stats_event_list.c",
         "statsd_writer.c",
     ],
+    host_supported: true,
     cflags: [
         "-Wall",
         "-Werror",
@@ -32,6 +33,7 @@ cc_library_static {
     ],
     export_include_dirs: ["include"],
     shared_libs: [
+        "libcutils",
         "liblog",
     ],
 }

libstats/stats_event_list.c

@@ -17,6 +17,7 @@
 #include "include/stats_event_list.h"
 
 #include <string.h>
+#include <sys/time.h>
 #include "statsd_writer.h"
 
 #define MAX_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(int32_t))
@@ -156,7 +157,14 @@ static int __write_to_stats_daemon(struct iovec* vec, size_t nr) {
     }
 
     save_errno = errno;
+#if defined(__ANDROID__)
     clock_gettime(CLOCK_REALTIME, &ts);
+#else
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    ts.tv_sec = tv.tv_sec;
+    ts.tv_nsec = tv.tv_usec * 1000;
+#endif
 
     int ret = (int)(*statsdLoggerWrite.write)(&ts, vec, nr);
     errno = save_errno;

libstats/statsd_writer.c

@@ -15,8 +15,9 @@
  */
 #include "statsd_writer.h"
 
+#include <cutils/fs.h>
 #include <cutils/sockets.h>
-#include <endian.h>
+#include <cutils/threads.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -37,6 +38,14 @@
 /* branchless on many architectures. */
 #define min(x, y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
 
+#ifndef htole32
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define htole32(x) (x)
+#else
+#define htole32(x) __bswap_32(x)
+#endif
+#endif
+
 static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
 static atomic_int dropped = 0;
 
@@ -78,7 +87,14 @@ static int statsdOpen() {
 
     i = atomic_load(&statsdLoggerWrite.sock);
     if (i < 0) {
-        int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0));
+        int flags = SOCK_DGRAM;
+#ifdef SOCK_CLOEXEC
+        flags |= SOCK_CLOEXEC;
+#endif
+#ifdef SOCK_NONBLOCK
+        flags |= SOCK_NONBLOCK;
+#endif
+        int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, flags, 0));
         if (sock < 0) {
             ret = -errno;
         } else {