metrics: Add init script for metrics_daemon.

This init script creates the metrics data directory (/data/misc/metrics)
and starts the daemon.

BUG: 22953527

Change-Id: I21cd36f38a7a3550bc755cef5699e9a6ac3dfb94

metricsd/Android.mk

@@ -16,6 +16,8 @@ LOCAL_PATH := $(call my-dir)
 
 ifeq ($(HOST_OS),linux)
 
+LOCAL_INIT_SERVICE := metrics_daemon
+
 metrics_cpp_extension := .cc
 libmetrics_sources := \
   c_metrics_library.cc \
@@ -96,12 +98,13 @@ include $(BUILD_STATIC_LIBRARY)
 # metrics daemon.
 # ========================================================
 include $(CLEAR_VARS)
-LOCAL_MODULE := metrics_daemon
+LOCAL_MODULE := $(LOCAL_INIT_SERVICE)
 LOCAL_C_INCLUDES := $(metrics_includes) \
   external/libchromeos
 LOCAL_CFLAGS := $(metrics_CFLAGS)
 LOCAL_CPP_EXTENSION := $(metrics_cpp_extension)
 LOCAL_CPPFLAGS := $(metrics_CPPFLAGS)
+LOCAL_REQUIRED_MODULES := init.$(LOCAL_INIT_SERVICE).rc
 LOCAL_RTTI_FLAG := -frtti
 LOCAL_SHARED_LIBRARIES := $(metrics_shared_libraries) \
   libmetrics \
@@ -113,4 +116,13 @@ LOCAL_SRC_FILES := $(metrics_daemon_sources)
 LOCAL_STATIC_LIBRARIES := metrics_daemon_protos
 include $(BUILD_EXECUTABLE)
 
+ifdef INITRC_TEMPLATE
+include $(CLEAR_VARS)
+LOCAL_MODULE := init.$(LOCAL_INIT_SERVICE).rc
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_PATH := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_INITRCD)
+LOCAL_SRC_FILES := init.$(LOCAL_INIT_SERVICE).rc
+include $(BUILD_PREBUILT)
+endif # INITRC_TEMPLATE
+
 endif # HOST_OS == linux

metricsd/init.metrics_daemon.rc

@@ -0,0 +1,8 @@
+on boot
+    mkdir /data/misc/metrics 0700 system system
+
+service metrics_daemon /system/bin/metrics_daemon --uploader -nodaemon
+    class late_start
+    user system
+    group system dbus inet
+    seclabel u:r:brillo:s0