android13/packages/services/Car/cpp/telemetry/cartelemetryd/sampleclient

ICarTelemetry Sample Client

This is a sample vendor service that sends CarData to car telemetry service.

Running

1. Quick mode - under root

m -j android.automotive.telemetryd-sampleclient

adb root
adb remount  # make sure run "adb disable-verity" before remounting
adb push $ANDROID_PRODUCT_OUT/vendor/bin/android.automotive.telemetryd-sampleclient /system/bin/

adb shell /system/bin/android.automotive.telemetryd-sampleclient

# Then check logcat and dumpsys to verify the results. The following command enables VERBOSE logs.
adb shell setprop log.tag.android.automotive.telemetryd@1.0 V
adb logcat -v color -b all -T 1000

2. Under vendor

To include it in the final image, add PRODUCT_PACKAGES += android.automotive.telemetryd-sampleclient to //packages/services/Car/cpp/telemetry/cartelemetryd/products/telemetry.mk (or other suitable mk file).

# this goes to products/telemetry.mk

PRODUCT_PACKAGES += android.automotive.telemetryd-sampleclient

The sampleclient doesn't automatically start during boot, to start manually, run: adb shell /vendor/bin/android.automotive.telemetryd-sampleclient.

If you want to test it by running init, add these SELinux rules:

# this goes to sepolicy/private/cartelemetryd.te

type cartelemetryd_sample, domain;
type cartelemetryd_sample_exec, vendor_file_type, exec_type, file_type;
init_daemon_domain(cartelemetryd_sample)

# this goes to sepolicy/private/file_contexts

/vendor/bin/android\.automotive\.telemetryd-sampleclient  u:object_r:cartelemetryd_sample_exec:s0

And create an .rc file:

# File: cartelemetryd-sampleclient.rc
# Don't forget to add `init_rc: ["cartelemetryd-sampleclient.rc"],` to the Android.bp

service cartelemetryd_sample /vendor/bin/android.automotive.telemetryd-sampleclient
    class hal
    user system
    group system
    oneshot  # run once, otherwise init keeps restarting it
    disabled  # do not start automatically