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Add JNI call for writing StatsEvent to statsd.

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Bug: 143978873
Test: m -j
Test: flashes successfully
Test: DocumentsUI(a Mainline module) is able to successfully log to statsd
Change-Id: I9cdc6151d8feb29a712532e50f143af9d52c8d94
This commit is contained in:
Muhammad Qureshi
2019-11-06 15:26:08 -08:00
parent 15c81edf43
commit f11130cfa0
2 changed files with 31 additions and 14 deletions
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27
core/java/android/util/StatsLog.java
View File

@@ -224,12 +224,35 @@ public final class StatsLog extends StatsLogInternal {
/**
* Write an event to stats log using the raw format.
*
* @param buffer The encoded buffer of data to write..
* @param buffer The encoded buffer of data to write.
* @param size The number of bytes from the buffer to write.
* @hide
*/
// TODO(b/144935988): Mark deprecated.
@SystemApi
public static native void writeRaw(@NonNull byte[] buffer, int size);
public static void writeRaw(@NonNull byte[] buffer, int size) {
// TODO(b/144935988): make this no-op once clients have migrated to StatsEvent.
writeImpl(buffer, size, 0);
}
/**
* Write an event to stats log using the raw format.
*
* @param buffer The encoded buffer of data to write.
* @param size The number of bytes from the buffer to write.
* @param atomId The id of the atom to which the event belongs.
*/
private static native void writeImpl(@NonNull byte[] buffer, int size, int atomId);
/**
* Write an event to stats log using the raw format encapsulated in StatsEvent.
*
* @param statsEvent The StatsEvent object containing the encoded buffer of data to write.
* @hide
*/
public static void write(@NonNull final StatsEvent statsEvent) {
writeImpl(statsEvent.getBytes(), statsEvent.getNumBytes(), statsEvent.getAtomId());
}
private static void enforceDumpCallingPermission(Context context) {
context.enforceCallingPermission(android.Manifest.permission.DUMP, "Need DUMP permission.");

18
core/jni/android_util_StatsLog.cpp
View File

@@ -18,18 +18,17 @@
#define LOG_TAG "StatsLog_println"
#include <assert.h>
#include <cutils/properties.h>
#include "jni.h"
#include <nativehelper/JNIHelp.h>
#include "utils/misc.h"
#include "core_jni_helpers.h"
#include "stats_event_list.h"
#include "stats_buffer_writer.h"
namespace android {
static void android_util_StatsLog_writeRaw(JNIEnv* env, jobject clazz, jbyteArray buf, jint size)
{
static void android_util_StatsLog_write(JNIEnv* env, jobject clazz, jbyteArray buf, jint size,
jint atomId) {
if (buf == NULL) {
return;
}
@@ -42,13 +41,8 @@ static void android_util_StatsLog_writeRaw(JNIEnv* env, jobject clazz, jbyteArra
if (bufferArray == NULL) {
return;
}
const uint32_t statsEventTag = 1937006964;
struct iovec vec[2];
vec[0].iov_base = (void*) &statsEventTag;
vec[0].iov_len = sizeof(statsEventTag);
vec[1].iov_base = (void*) bufferArray;
vec[1].iov_len = size;
write_to_statsd(vec, 2);
write_buffer_to_statsd((void*) bufferArray, size, atomId);
env->ReleaseByteArrayElements(buf, bufferArray, 0);
}
@@ -58,7 +52,7 @@ static void android_util_StatsLog_writeRaw(JNIEnv* env, jobject clazz, jbyteArra
*/
static const JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
{ "writeRaw", "([BI)V", (void*) android_util_StatsLog_writeRaw },
{ "writeImpl", "([BII)V", (void*) android_util_StatsLog_write },
};
int register_android_util_StatsLog(JNIEnv* env)