From c73f4c0fd3b0a8751321c899d0d5a8701039ee87 Mon Sep 17 00:00:00 2001
From: terence tsao <terence@prysmaticlabs.com>
Date: Wed, 26 Sep 2018 17:08:00 -0700
Subject: [PATCH] Enable Remote Caching & Use Host GO Version (#578)

* Revert "Add Skip Coverage Condition in Coverage.sh (#416)"

This reverts commit 72a5dd1cf4c3942fb4dc04a27a08d8b0742abbae.

* add coverage.sh back

* remote cache

* fixed formatting

* Add support for cache reads and writes

* trying to get this newline to not be escaped. please behave travis

* last attempt at new line...
---
 .travis-bazelrc |  9 ++++++---
 .travis.yml     | 34 ++++++++++++++++++++--------------
 2 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/.travis-bazelrc b/.travis-bazelrc
index 2be706c5c1..349dc27b5c 100644
--- a/.travis-bazelrc
+++ b/.travis-bazelrc
@@ -1,9 +1,12 @@
 startup --host_jvm_args=-Xmx500m --host_jvm_args=-Xms500m
 
 # Remote caching over Google Cloud Storage
-# TODO(#282): Enable remote caching/execution
-#build:remote --remote_http_cache=https://storage.googleapis.com/prysmatic-bazel-cache
-#build:remote --google_credentials=/tmp/service-account.json
+# Read-only
+build:remote --remote_http_cache=https://storage.googleapis.com/prysmatic-bazel-cache
+build:remote --remote_upload_local_results=false
+# Read-write (prysmatic branches only)
+build:remote-rw --remote_http_cache=https://storage.googleapis.com/prysmatic-bazel-cache
+build:remote-rw --google_credentials=/tmp/service-account.json
 
 # Set some build options for travis container.
 build --local_resources=1536,1.5,0.5
diff --git a/.travis.yml b/.travis.yml
index a876448d53..f3b6044517 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,6 +27,8 @@ matrix:
       before_install:
         # Install Bazel
          - |
+          echo "" >> WORKSPACE
+          echo "go_register_toolchains(go_version = \"host\")"  >> WORKSPACE
           if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
             OS=darwin
           else
@@ -39,12 +41,13 @@ matrix:
           ./install.sh --user
           rm -f install.sh
         # Decrypt service account (only works on prysmaticlabs branches)
-        # TODO(#282): enable remote caching / execution
-        #- if [[ $encrypted_64ca747eb448_iv ]]; then
-        #    openssl aes-256-cbc -K $encrypted_64ca747eb448_key -iv $encrypted_64ca747eb448_iv
-        #    -in service-account.json.enc -out /tmp/service-account.json -d;
-        #    REMOTE_FLAGS=--config=remote;
-        #  fi
+         - if [[ $encrypted_64ca747eb448_iv ]]; then
+            openssl aes-256-cbc -K $encrypted_64ca747eb448_key -iv $encrypted_64ca747eb448_iv
+            -in service-account.json.enc -out /tmp/service-account.json -d;
+             REMOTE_FLAGS=--config=remote-rw;
+             else
+             REMOTE_FLAGS=--config=remote;
+          fi
       
       install: true # Skip install go packages.
           
@@ -54,7 +57,7 @@ matrix:
           bazel \
             --bazelrc=.travis-bazelrc \
             build \
-            //...
+            //... $REMOTE_FLAGS
         # Run all tests.
         - |
           bazel \
@@ -75,6 +78,8 @@ matrix:
       before_install:
         # Install Bazel
          - |
+          echo "" >> WORKSPACE
+          echo "go_register_toolchains(go_version = \"host\")"  >> WORKSPACE
           if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
             OS=darwin
           else
@@ -87,12 +92,13 @@ matrix:
           ./install.sh --user
           rm -f install.sh
         # Decrypt service account (only works on prysmaticlabs branches)
-        # TODO(#282): enable remote caching / execution
-        #- if [[ $encrypted_64ca747eb448_iv ]]; then
-        #    openssl aes-256-cbc -K $encrypted_64ca747eb448_key -iv $encrypted_64ca747eb448_iv
-        #    -in service-account.json.enc -out /tmp/service-account.json -d;
-        #    REMOTE_FLAGS=--config=remote;
-        #  fi
+         - if [[ $encrypted_64ca747eb448_iv ]]; then
+             openssl aes-256-cbc -K $encrypted_64ca747eb448_key -iv $encrypted_64ca747eb448_iv
+             -in service-account.json.enc -out /tmp/service-account.json -d;
+             REMOTE_FLAGS=--config=remote-rw;
+             else
+             REMOTE_FLAGS=--config=remote;
+             fi
 
       install: true # Skip install go packages.
 
@@ -102,7 +108,7 @@ matrix:
           bazel \
             --bazelrc=.travis-bazelrc \
             build \
-            //...
+            //... $REMOTE_FLAGS
         # Run all tests.
         - |
           bazel \