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

…ular#31200)

PR Close angular#31200

scripts/local-dev/setup-rbe.sh

@@ -0,0 +1,70 @@
+#!/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.
+project_directory=$(git rev-parse --show-toplevel 2> /dev/null);
+if [[ $? -ne 0 ]]; then
+  echo "This command must be run from within the cloned \"angular/angular\" repository.";
+  exit 1;
+fi
+
+# Confirm gcloud installed and available as a command.
+if [ ! -x "$(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 $0 <ServiceAccountKeyLocation>
+
+  \e[1mExample:\e[0m ./setup-rbe ~/my_key_storage_directory/
+
+  The directory provided will be used to store the GCP service account key
+  for the angular-local-dev service account. This key will then be used to
+  authenticate for usage of the Remote Build Execution system and Remote Caching.
+";
+  exit 1;
+fi
+credentials_directory=$(readlink -f $1)
+if [[ ! -d $credentials_directory ]]; then
+  echo "The specified directory does not exist. Please create the directory and rerun.";
+  exit 1;
+fi
+
+# Create the service account key in the provided directory.
+echo "Checking provided directory for a service account key.";
+json_key_filepath="$credentials_directory/angular-local-dev-key.json";
+if [[ -f $json_key_filepath ]]; then
+  echo "Angular Local Dev key already exists, reusing this key.";
+else
+  # 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
+  gcloud iam service-accounts keys create $json_key_filepath \
+    --iam-account angular-local-dev@internal-200822.iam.gserviceaccount.com \
+    --quiet --project internal-200822;
+  if [[ $? -ne 0 ]]; then
+    echo "Downloading service account key failed. Aborting.";
+    exit 2;
+  fi
+fi
+
+# The full path to the .bazelrc.user file
+bazelrc_user_filepath="$project_directory/.bazelrc.user";
+# Create the bazelrc.user file, echo the config flags into the file.
+touch $bazelrc_user_filepath;
+echo "build --config=remote-http-caching" >> $bazelrc_user_filepath;
+echo "build --google_credentials=$json_key_filepath" >> $bazelrc_user_filepath;