Java API for pulled atoms

This creates a java API for registering pullers. Will implement the
statsd side in a follow up CL.

Test: builds, boots
Change-Id: Ib6735984297ce3148839a6370a3c15b2a585baf5

3 files changed, 102 insertions, 0 deletions

diff --git a/libs/services/Android.bp b/libs/services/Android.bp
index 1b9939d9a598..b0fad57dfd29 100644
--- a/libs/services/Android.bp
+++ b/libs/services/Android.bp
@@ -22,6 +22,7 @@ cc_library_shared {
         "src/os/DropBoxManager.cpp",
         "src/os/StatsDimensionsValue.cpp",
         "src/os/StatsLogEventWrapper.cpp",
+        "src/util/StatsEvent.cpp",
     ],
 
     shared_libs: [
diff --git a/libs/services/include/android/util/StatsEvent.h b/libs/services/include/android/util/StatsEvent.h
new file mode 100644
index 000000000000..48631174f7dd
--- /dev/null
+++ b/libs/services/include/android/util/StatsEvent.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef STATS_EVENT_H
+#define STATS_EVENT_H
+
+#include <binder/Parcel.h>
+#include <binder/Parcelable.h>
+#include <binder/Status.h>
+#include <vector>
+
+namespace android {
+namespace util {
+class StatsEvent : public android::Parcelable {
+    public:
+        StatsEvent();
+
+        StatsEvent(StatsEvent&& in) = default;
+
+        android::status_t writeToParcel(android::Parcel* out) const;
+
+        android::status_t readFromParcel(const android::Parcel* in);
+
+    private:
+        int mAtomTag;
+        std::vector<uint8_t> mBuffer;
+};
+} // Namespace util
+} // Namespace android
+
+#endif  // STATS_ EVENT_H
\ No newline at end of file
diff --git a/libs/services/src/util/StatsEvent.cpp b/libs/services/src/util/StatsEvent.cpp
new file mode 100644
index 000000000000..8b8579167b00
--- /dev/null
+++ b/libs/services/src/util/StatsEvent.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <android/util/StatsEvent.h>
+
+#include <binder/Parcel.h>
+#include <binder/Parcelable.h>
+#include <binder/Status.h>
+#include <vector>
+
+using android::Parcel;
+using android::Parcelable;
+using android::status_t;
+using std::vector;
+
+namespace android {
+namespace util {
+
+StatsEvent::StatsEvent(){};
+
+status_t StatsEvent::writeToParcel(Parcel* out) const {
+    // Implement me if desired. We don't currently use this.
+    ALOGE("Cannot do c++ StatsEvent.writeToParcel(); it is not implemented.");
+    (void)out;  // To prevent compile error of unused parameter 'out'
+    return UNKNOWN_ERROR;
+};
+
+status_t StatsEvent::readFromParcel(const Parcel* in) {
+    status_t res = OK;
+    if (in == NULL) {
+        ALOGE("statsd received parcel argument was NULL.");
+        return BAD_VALUE;
+    }
+    if ((res = in->readInt32(&mAtomTag)) != OK) {
+        ALOGE("statsd could not read atom tag from parcel");
+        return res;
+    }
+    if ((res = in->readByteVector(&mBuffer)) != OK) {
+        ALOGE("statsd could not read buffer from parcel");
+        return res;
+    }
+    return NO_ERROR;
+};
+
+} // Namespace util
+} // Namespace android