scripts/bootstrap.sh

#!/bin/bash
#
# Copyright 2022 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Sets up this repository and all its dependencies.
#
# Usage:
#   bootstrap.sh
#
# Requirements:
#   1. $FUCHSIA_EMBEDDER_DIR is set to your flutter-embedder.git checkout.

set -e # Fail on any error.
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/lib/echo_helpers.sh || exit $?

if [[ -z $FUCHSIA_EMBEDDER_DIR ]]
then
  echo-error '$FUCHSIA_EMBEDDER_DIR must be set to your flutter-embedder folder before running this script.'
  echo-error 'Add this line to your shell profile:'
  echo-error "export FUCHSIA_EMBEDDER_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && cd .. && pwd)"
  exit 1
fi

echo-info "Initializing submodules..."
git -C $FUCHSIA_EMBEDDER_DIR submodule update --recursive --init

echo-info "Configuring git to update submodules when pulling changes in this repo..."
echo-info "(This is necessary to keep libflutter_engine.so and third_party/dart-pkg/flutter aligned"
echo-info "to avoid crashes from Dart SDK incompatibilities)"
git -C $FUCHSIA_EMBEDDER_DIR config submodule.recurse true

echo-info "Bootstrapping Bazel..."
$FUCHSIA_EMBEDDER_DIR/third_party/sdk-integration/bazel_rules_fuchsia/scripts/bootstrap_bazel.sh
$FUCHSIA_EMBEDDER_DIR/tools/bazel clean

echo-info 'Building the embedder to fetch external dependencies (clang)...'
$FUCHSIA_EMBEDDER_DIR/tools/bazel build --config=fuchsia_x64 //src/embedder

echo-info "Initializing Fuchsia SSH keys (if not already created)..."
[[ -f "${HOME}/.ssh/fuchsia_ed25519" ]] || ssh-keygen -P "" -t ed25519 -f "${HOME}/.ssh/fuchsia_ed25519" -C "${USER}@$(hostname -f) Shared SSH Key for Fuchsia"
[[ -f "${HOME}/.ssh/fuchsia_authorized_keys" ]] || ssh-keygen -y -f "${HOME}/.ssh/fuchsia_ed25519" > "${HOME}/.ssh/fuchsia_authorized_keys"

echo-info "Installing Git hooks..."
$FUCHSIA_EMBEDDER_DIR/scripts/install_hooks.sh

# Installing the product-bundle fails when the user has product bundles
# from a previous version of ffx installed, so we clean up old product bundles
# here.
# TODO(akbiggs): Is there something less invasive we can do here?
echo-warning "Deleting other product bundles to ensure the new product bundle installs... Sorry..."
rm -rf ~/.local/share/Fuchsia/ffx/pbms

echo-info "Installing the workstation_eng.qemu-x64 product bundle..."
$FUCHSIA_EMBEDDER_DIR/tools/ffx product-bundle get workstation_eng.qemu-x64
echo

if [[ -r /dev/kvm ]] && grep '^flags' /proc/cpuinfo | grep -qE 'vmx|svm'
then
  # I'm bad at shell and couldn't figure out how to invert this condition properly.
  :
else
  echo-warning 'VM acceleration (KVM) is not enabled on your machine. Consider enabling it by following https://fuchsia.dev/fuchsia-src/get-started/set_up_femu?hl=en#enable-vm-acceleration.'
  echo-warning 'Without KVM enabled, emulator performance will be terrible.'
  echo-warning 'If you have already enabled KVM, you may need to reboot your machine.'
fi

echo "Done. You're now ready to run a Flutter on Fuchsia example app:"
echo "https://fuchsia.googlesource.com/flutter-embedder#run-an-example-app"