build: address comments, restructure setup-rbe.sh script (#33109)

PR Close #33109

.bazelrc

@@ -71,8 +71,6 @@ test --test_output=errors
 # any bazel target. This is a temporary flag until codebase is permanently switched to Ivy.
 build --define=compile=legacy
 
-build --google_default_credentials
-
 #######################
 # Remote HTTP Caching #
 #######################
@@ -86,6 +84,7 @@ build --remote_upload_local_results=false
 #  --config=-http-caching            #
 ######################################
 build:remote-http-caching --remote_upload_local_results=true
+build:remote-http-caching --google_default_credentials
 
 ##################################
 # Remote Build Execution support #
@@ -99,6 +98,7 @@ import %workspace%/third_party/github.com/bazelbuild/bazel-toolchains/bazelrc/.b
 # Increase the default number of jobs by 50% because our build has lots of
 # parallelism
 build:remote --jobs=150
+build:remote --google_default_credentials
 
 # Toolchain and platform related flags
 build:remote --host_javabase=@rbe_ubuntu1604_angular//java:jdk

docs/DEVELOPER.md

@@ -171,10 +171,12 @@ Bazel builds in the Angular repository use a shared http cache.  When a build oc
 and checked against available outputs in the shared http cache.  If an output is found, it is used as the output for the
 build action rather than performing the build locally.
 
+> Remote Build Execution and uploading to the Remote Cache requires authentication as a google.com or angular.io account.
+
 ### --config=remote-http-caching flag
 The `--config=remote-http-caching` flag can be added to enable uploading of build results to the shared http cache.  This flag
 can be added to the `.bazelrc.user` file using the script at `scripts/local-dev/setup-rbe.sh`.
 
 ### --config=remote flag
-The `--config=remote-http-caching` flag can be added to enable remote execution of builds.  This flag can be added to 
+The `--config=remote` flag can be added to enable remote execution of builds.  This flag can be added to 
 the `.bazelrc.user` file using the script at `scripts/local-dev/setup-rbe.sh`.

scripts/local-dev/get-email

@@ -0,0 +1,24 @@
+#!/usr/bin/env node
+
+/**
+ * Retrieves the email value from a json object.  This assumes
+ * the email attributes is at the base of the object, as returned
+ * by Google Cloud's tokeninfo api.
+ */
+
+// Read information being piped in.
+var stdin = process.openStdin();
+// Stored data stream.
+var data = "";
+
+// Store each chunk of the stream in data.
+stdin.on('data', chunk => data += chunk);
+
+// After stream ends, parse data and get value requested.
+stdin.on('end', () => {
+  // The JSON object, to be accessed.
+  let output = JSON.parse(data);
+
+  // Print the output to STDOUT.
+  console.log(output['email']);
+});

scripts/local-dev/setup-rbe.sh

@@ -1,11 +1,15 @@
 #!/bin/bash
 # A script for automatically configuring a user's local dev
 # environment to use Remote Build Execution.
-
 # Short cuts to set output as bold and normal
 bold=$(tput bold)
 normal=$(tput sgr0)
 
+###########################################################
+#                Setup/Confirm Environment                #
+###########################################################
+# The full path location of the script
+full_script_path="$(pwd)/$(dirname ${BASH_SOURCE[0]})"
 # Determine the root directory of the Angular github repo.
 project_directory=$(git rev-parse --show-toplevel 2> /dev/null)
 if [[ $? -ne 0 ]]; then
@@ -20,32 +24,49 @@ if [ ! -x "$(command -v gcloud)" ]; then
   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 application-default print-access-token &> /dev/null
-if [[ $? -ne 0 ]]; then
-  echo "Not currently logged into gcloud. Starting gcloud login now"
+# The full path to the .bazelrc.user file
+bazelrc_user_filepath="$project_directory/.bazelrc.user"
+
+###########################################################
+#                    Action Functions                     #
+###########################################################
+# Log into gcloud
+function gcloud_login() {
   gcloud auth application-default login
   if [[ $? -ne 0 ]]; then
     echo "gcloud login failed. Aborting"
     exit 2
   fi
+}
+
+# Confirm the user is already logged into gcloud, if they aren't
+# attempt to login.  After login, confirm the logged in account
+# is from the correct domain.
+function confirm_gcloud_login() {
+  echo "Checking gcloud login state"
+  gcloud auth application-default print-access-token &> /dev/null
+  if [[ $? -ne 0 ]]; then
+    echo "Not currently logged into gcloud. Starting gcloud login now"
+    gcloud_login
   fi
   access_token=$(gcloud auth application-default print-access-token)
-current_account=$(curl -s https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=$access_token | jq -r '.email')
+  current_account=$(curl -s https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=$access_token | node $full_script_path/get-email)
   if [[ ! $current_account =~ (angular\.io$)|(google\.com$) ]]; then
-  echo "Currently an angular.io or google.com account must be used for remote Bazel usage"
-  echo "Please login instead using the correct account with the following command, then rerun"
-  echo "  gcloud auth application-default login"
+    echo "Logged in as $current_account";
+    echo "An angular.io or google.com account must be used for remote Bazel usage."
+    echo "Please login instead using an account from one of these domains."
+    read -p "Rerun login command now? [Y/y]"
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+      gcloud_login
+      confirm_gcloud_login
+      return
+    else
+      echo "Exiting..."
       exit 3
     fi
+  fi
   echo "Logged in as $current_account";
-
-# The full path to the .bazelrc.user file
-bazelrc_user_filepath="$project_directory/.bazelrc.user"
-# Create the bazelrc.user file, echo the config flags into the file.
-touch $bazelrc_user_filepath
+}
 
 # Prompts to add a flag to the .bazelrc.user file if its not already in place
 function add_flag() {
@@ -62,14 +83,23 @@ function add_flag() {
   echo
 }
 
+###########################################################
+#                  RBE Setup Script                       #
+###########################################################
+# Create the bazelrc.user file, echo the config flags into the file.
+touch $bazelrc_user_filepath
+
+# Ensure default credentials are valid.
+confirm_gcloud_login
+
 # Add extra line space before config setup.
 echo
+# Remote builds
+echo "The ${bold}remote${normal} flag enables RBE, builds run remotely when possible and caching"
+echo "occurs in the RBE context"
+add_flag "build --config=remote"
+
 # Remote HTTP Caching
 echo "The ${bold}remote-http-caching${normal} flag enables uploading build results to the http cache,"
 echo "but not does enable remote builds"
 add_flag "build --config=remote-http-caching"
-
-# Remote builds
-echo "The ${bold}remote${normal} flag enables RBE, builds occurs remotely when possible and caching"
-echo "occurs in the RBE context"
-add_flag "build --config=remote"