function _source_env_setup_script() {

local -r ENV_SETUP_SCRIPT="build/make/envsetup.sh"

local -r TOP_DIR=$(

while [[ ! -f "${ENV_SETUP_SCRIPT}" ]] && [[ "${PWD}" != "/" ]]; do

\cd ..

done

if [[ -f "${ENV_SETUP_SCRIPT}" ]]; then

echo "$(PWD= /bin/pwd -P)"

fi

)

local -r FULL_PATH_ENV_SETUP_SCRIPT="${TOP_DIR}/${ENV_SETUP_SCRIPT}"

if [[ ! -f "${FULL_PATH_ENV_SETUP_SCRIPT}" ]]; then

echo "ERROR: Unable to source ${ENV_SETUP_SCRIPT}"

return 1

fi

# Need to change directory to the repo root so vendor scripts can be sourced

# as well.

local -r CUR_DIR=$PWD

\cd "${TOP_DIR}"

source "${FULL_PATH_ENV_SETUP_SCRIPT}"

\cd "${CUR_DIR}"

}

# This function needs to run first as the remaining defining functions may be

# using the envsetup.sh defined functions. Skip this part if this script is already

# being invoked from envsetup.sh.

if [[ "$1" != "--skip-envsetup" ]]; then

_source_env_setup_script || return

fi

# This function prefixes the given command with appropriate variables needed

# for the build to be executed with RBE.

function use_rbe() {

local RBE_BINARIES_DIR="prebuilts/remoteexecution-client/latest"

local DOCKER_IMAGE="gcr.io/androidbuild-re-dockerimage/android-build-remoteexec-image@sha256:1eb7f64b9e17102b970bd7a1af7daaebdb01c3fb777715899ef462d6c6d01a45"

# Do not set an invocation-ID and let reproxy auto-generate one.

USE_RBE="true" \

FLAG_exec_root="$(gettop)" \

FLAG_platform="container-image=docker://${DOCKER_IMAGE}" \

RBE_use_application_default_credentials="true" \

RBE_reproxy_wait_seconds="20" \

RBE_CXX_EXEC_STRATEGY="remote_local_fallback" \

RBE_RUST_EXEC_STRATEGY="remote_local_fallback" \

RBE_cpp_dependency_scanner_plugin="${RBE_BINARIES_DIR}/dependency_scanner_go_plugin.so" \

RBE_DIR=${RBE_BINARIES_DIR} \

RBE_re_proxy="${RBE_BINARIES_DIR}/reproxy" \

$@

}

# This function detects if the uploader is available and sets the path of it to

# ANDROID_ENABLE_METRICS_UPLOAD.

function _export_metrics_uploader() {

local uploader_path="$(gettop)/vendor/google/misc/metrics_uploader_prebuilt/metrics_uploader.sh"

if [[ -x "${uploader_path}" ]]; then

export ANDROID_ENABLE_METRICS_UPLOAD="${uploader_path}"

fi

}

# This function sets RBE specific environment variables needed for the build to

# executed by RBE. This file should be sourced once per checkout of Android code.

function _set_rbe_vars() {

export USE_RBE="true"

export RBE_CXX_EXEC_STRATEGY="racing"

export RBE_RUST_EXEC_STRATEGY="racing"

export RBE_JAVAC_EXEC_STRATEGY="racing"

export RBE_R8_EXEC_STRATEGY="racing"

export RBE_D8_EXEC_STRATEGY="racing"

export RBE_use_unified_cas_ops="true"

export RBE_JAVAC=1

export RBE_R8=1

export RBE_D8=1

}

_export_metrics_uploader

_set_rbe_vars