bazel/avd/emulator_launcher.sh.template

#!/bin/bash

# This template is used to generate a script that can be used to launch or kill
# an emulator:
#   <target_name> [kill] port
# Where port is the ADB port to open and kill is supplied to kill the emulator
# on the supplied port.

# The path to the source.properties inside the system image.
source_properties_path="%source_properties_path%"

# Boot time might vary depending on API level. The value below was tested
# with API level 30 (rvc).
emulator_boot_timeout=70

# Set environment variables.
export HOME=$(pwd)
export ANDROID_PREFS_ROOT=$HOME
export ANDROID_SDK_ROOT=$HOME/prebuilts/studio/sdk/linux
export ANDROID_EMULATOR_HOME=$HOME/.android
export ANDROID_AVD_HOME=$ANDROID_EMULATOR_HOME/avd

# Relevant binaries.
emulator=prebuilts/android-emulator/linux-x86_64/emulator
adb=prebuilts/studio/sdk/linux/platform-tools/adb

# Kill the emulator if requested. This is needed to kill the emulator for
# local development.
if [ "$1" = "kill" ]; then
  echo "Killing emulator-$2"
  $adb -s emulator-$2 emu kill 2> /dev/null

  # Wait for the emulator to disconnect.
  while true; do
    # Update adb to make sure it knows the emulator is killed.
    $adb reconnect 2>&1
    output=$($adb -s emulator-$2 get-state 2> /dev/null)
    if [ -z "$output" ]; then
      break
    fi
    echo "Emulator state=$output"
    sleep 1
  done
  exit $?
fi

# Clear emulator files.
rm -rf .android 2> /dev/null
mkdir .android 2> /dev/null

# Read system image properties.
api_level="$(cat $source_properties_path | sed -rn 's/AndroidVersion.ApiLevel=(.*)/\1/p')"
abi_type="$(cat $source_properties_path | sed -rn 's/SystemImage.Abi=(.*)/\1/p')"
if [ -z "$api_level" ]; then
  echo "No API level found"
  exit 1
fi
if [ -z "$abi_type" ]; then
  echo "No ABI type found"
  exit 1
fi

# Create an AVD named "emu" with hardware properties from pixel.
echo "Creating AVD with API level $api_level and ABI type $abi_type"
system_image_dir=$(pwd)/$(dirname "$source_properties_path")
mkdir -p $ANDROID_AVD_HOME/emu.avd
cat > $ANDROID_AVD_HOME/emu.ini << EOF
avd.ini.encoding=UTF-8
path=$ANDROID_AVD_HOME/emu.avd
path.rel=avd/emu.avd
target=android-$api_level
EOF
cat > $ANDROID_AVD_HOME/emu.avd/config.ini << EOF
PlayStore.enabled=false
abi.type=$abi_type
avd.ini.encoding=UTF-8
hw.accelerometer=yes
hw.audioInput=yes
hw.battery=yes
hw.cpu.arch=$abi_type
hw.dPad=no
hw.device.hash2=MD5:524882cfa9f421413193056700a29392
hw.device.manufacturer=Google
hw.device.name=pixel
hw.gps=yes
hw.lcd.density=480
hw.lcd.height=1920
hw.lcd.width=1080
hw.mainKeys=no
hw.sdCard=yes
hw.sensors.orientation=yes
hw.sensors.proximity=yes
hw.trackBall=no
image.sysdir.1=$system_image_dir
EOF

# Launch the emulator.
echo "Launching emulator-$1"
boot_complete=false
# Try to launch the emulator. Keep relaunching if it takes too long.
for i in 1 2 3
do
  start_time=$SECONDS

  $emulator @emu -no-window -port $1 -delay-adb -no-snapshot -read-only 2>&1 &
  emu_pid=$!

  # Wait for the emulator to boot.
  echo "Waiting for emulator to boot"
  while true; do
    output=$($adb -s emulator-$1 shell getprop sys.boot_completed 2>&1)
    if [ "$output" = "1" ]; then
      boot_complete=true
      break
    fi
    elapsed_time=$(( SECONDS - start_time ))
    if [ "$elapsed_time" -gt "$emulator_boot_timeout" ]; then
      break
    fi
    sleep 1
  done
  if [ "$boot_complete" = true ]; then
    break
  fi
  echo "Emulator failed to come online in $emulator_boot_timeout seconds. Retrying $i ..."
  kill -9 $emu_pid 2> /dev/null
done
if [ "$boot_complete" = true ]; then
  echo "Emulator boot complete"
else
  echo "Emulator boot failed"
  exit 1
fi