build: create script for setting up RBE in local dev environment

Author: josephperrott

.bazelrc

@@ -58,3 +58,52 @@ build --strategy=AngularTemplateCompile=worker
 # Use the legacy AOT compiler strategy. We don't want to compile with Ivy nor with "ngtsc" which
 # does not generate factory files which are needed for AOT.
 build --define=compile=legacy
+
+################################
+# Remote Execution Setup       #
+################################
+
+# Use the Angular team internal GCP instance for remote execution.
+build:remote --remote_instance_name=projects/internal-200822/instances/default_instance
+build:remote --project_id=internal-200822
+
+# Setup the build strategy for various types of actions. Mixing "local" and "remote"
+# can cause unexpected results and we want to run everything remotely if possible.
+build:remote --spawn_strategy=remote
+build:remote --strategy=Javac=remote
+build:remote --strategy=Closure=remote
+build:remote --strategy=Genrule=remote
+build:remote --define=EXECUTOR=remote
+
+# Setup the remote build execution servers.
+build:remote --remote_cache=remotebuildexecution.googleapis.com
+build:remote --remote_executor=remotebuildexecution.googleapis.com
+build:remote --tls_enabled=true
+build:remote --auth_enabled=true
+
+# Setup the toolchain and platform for the remote build execution. The platform
+# is automatically configured by the "rbe_autoconfig" rule in the project workpsace.
+build:remote --crosstool_top=@rbe_default//cc:toolchain
+build:remote --host_javabase=@rbe_default//java:jdk
+build:remote --javabase=@rbe_default//java:jdk
+build:remote --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8
+build:remote --java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8
+build:remote --extra_execution_platforms=//tools:rbe_platform
+build:remote --host_platform=//tools:rbe_platform
+build:remote --platforms=//tools:rbe_platform
+build:remote --extra_toolchains=@rbe_default//config:cc-toolchain
+
+ # Setup Build Event Service
+build:remote --bes_backend=buildeventservice.googleapis.com
+build:remote --bes_timeout=30s
+build:remote --bes_results_url="https://source.cloud.google.com/results/invocations/"
+
+# Set remote caching settings
+build:remote --remote_accept_cached=true
+
+################################
+# Local Environment Setup      #
+################################
+# Load any settings which are specific to the current user. Needs to be *last* statement
+# in this config, as the user configuration should be able to overwrite flags from this file.
+try-import .bazelrc.user

.circleci/base-rbe-bazelrc

@@ -5,17 +5,3 @@
 # Save downloaded repositories in a location that can be cached by CircleCI. This helps us
 # speeding up the analysis time significantly with Bazel managed node dependencies on the CI.
 build --repository_cache=/home/circleci/bazel_repository_cache
-
-########################################
-# Remote Build Execution support on CI #
-########################################
-
-# Load base settings for remote build execution.
-import %workspace%/.circleci/base-rbe-bazelrc
-
-# Use the Angular team internal GCP instance for remote execution.
-build:remote --remote_instance_name=projects/internal-200822/instances/default_instance
-build:remote --project_id=internal-200822
-
-# Always read from remote cache on CI.
-build:remote --remote_accept_cached=true

.circleci/bazel.rc

@@ -42,3 +42,4 @@ testem.log
 /.chrome
 /.git
 /.firebase
+/.bazelrc.user

.gitignore

@@ -0,0 +1,72 @@
+#!/bin/bash
+# A script for automatically configuring a user's local dev
+# environment to use Remote Build Execution.
+
+# Determine the root directory of the Angular github repo.
+GITHUB_DIRECTORY_ROOT=$(git rev-parse --show-toplevel 2> /dev/null);
+if [[ $? -ne 0 ]]; then
+  echo "This command must be run from within the cloned \"angular/components\" repository."
+  exit 1;
+fi
+
+# Confirm gcloud installed and available as a command.
+if [ ! -x "$(command -v gcloud)" ]; then
+  echo "gcloud command is not available.  Please install gcloud before continuing."
+  exit 1;
+fi
+
+# Confirm the parameter provided to the script is a directory
+if [[ ! -d $1 ]]; then
+  echo -e "Invalid command syntax. 
+
+  \e[1mUsage:\e[0m $0 <ServiceAccountKeyLocation>
+  
+  \e[1mExample:\e[0m $0 ~/my_key_storage_directory/
+
+  The directory provided will be used to store the GCP service account key
+  for the angular-local-dev service account.  This key will then be used to
+  authenticate for usage of the Remote Build Execution system and Remote Caching.
+";
+  exit 1;
+fi
+ABSOLUTE_PATH_TO_DIRECTORY_FOR_KEY=$(readlink -f $1)
+if [[ ! -d $ABSOLUTE_PATH_TO_DIRECTORY_FOR_KEY ]]; then
+  echo "Can't find the absolute directory path"
+  exit 1;
+fi
+
+# Confirm the user is already logged into gcloud, if they aren't
+# attempt to login
+echo "Checking gcloud login state."
+gcloud auth print-identity-token &> /dev/null;
+if [[ $? -ne 0 ]]; then
+  echo "Not currently logged into gcloud.  Starting gcloud login now."
+  gcloud auth login;
+  if [[ $? -ne 0 ]]; then
+    echo "gcloud login failed.  Aborting.";
+    exit 2
+  fi
+fi
+
+# Create the service account key in the provided directory.
+echo "Checking provided directory for a service account key."
+JSON_KEY_FILEPATH="$ABSOLUTE_PATH_TO_DIRECTORY_FOR_KEY/angular-local-dev-key.json";
+if [[ -f $JSON_KEY_FILEPATH ]]; then
+  echo "Angular Local Dev key already exists, reusing this key."
+else
+  gcloud iam service-accounts keys create $JSON_KEY_FILEPATH \
+    --iam-account angular-local-dev@internal-200822.iam.gserviceaccount.com \
+    --quiet --verbosity none --project internal-200822;
+  echo $?;
+  if [[ $? -ne 0 ]]; then
+    echo "Downloading service account key failed.  Aborting."
+    exit 2;
+  fi
+fi
+
+# The full path to the .bazelrc.user file
+BAZELRC_USER_FILEPATH="$GITHUB_DIRECTORY_ROOT/.bazelrc.user";
+# Create the bazelrc.user file, echo the config flags into the file.
+touch $BAZELRC_USER_FILEPATH;
+echo "build --config=remote" >> $BAZELRC_USER_FILEPATH;
+echo "build --google_credentials=$JSON_KEY_FILEPATH" >> $BAZELRC_USER_FILEPATH;