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Commit f11130cf authored by Muhammad Qureshi's avatar Muhammad Qureshi
Browse files

Add JNI call for writing StatsEvent to statsd. 

Bug: 143978873
Test: m -j
Test: flashes successfully
Test: DocumentsUI(a Mainline module) is able to successfully log to statsd
Change-Id: I9cdc6151d8feb29a712532e50f143af9d52c8d94
parent 15c81edf

core/java/android/util/StatsLog.java

+25 −2
Original line number Diff line number Diff line
@@ -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.");

core/jni/android_util_StatsLog.cpp

+6 −12
Original line number Diff line number Diff line
@@ -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)