Push to formulae.brew.sh with GitHub Actions (#37123)

Update formulae.brew.sh with GitHub Actions (and remove Travis CI). This removes the need for Travis CI for pushing changes to formulae.brew.sh and uses GitHub Actions instead.

.github/main.workflow

@@ -6,5 +6,5 @@ workflow "Push" {
 action "Generate formulae.brew.sh" {
   uses = "docker://linuxbrew/brew"
   runs = ".github/main.workflow.sh"
-  secrets = ["GITHUB_TOKEN"]
+  secrets = ["ANALYTICS_JSON_KEY", "FORMULAE_DEPLOY_KEY"]
 }

.github/main.workflow.sh

@@ -2,32 +2,51 @@
 
 set -e
 
-# take ownership as current user (in case it's linuxbrew)
-sudo mkdir ~/.cache
-sudo chown -R $USER . ~/.cache
+# silence bundler complaining about being root
+mkdir ~/.bundle
+echo 'BUNDLE_SILENCE_ROOT_WARNING: "1"' > ~/.bundle/config
+
+# configure git
+git config --global user.name "BrewTestBot"
+git config --global user.email "homebrew-test-bot@lists.sfconservancy.org"
 
 # create stubs so build dependencies aren't incorrectly flagged as missing
 for i in python svn unzip xz
 do
-  sudo touch /usr/bin/$i
-  sudo chmod +x /usr/bin/$i
+  touch /usr/bin/$i
+  chmod +x /usr/bin/$i
 done
 
-# tap Homebrew/homebrew-core instead of Linuxbrew's
-rm -rf "$(brew --repo homebrew/core)"
+# setup Homebrew/homebrew-core instead of Linuxbrew's
+CORE_DIR="$(brew --repo homebrew/core)"
+mkdir -p "$CORE_DIR"
+rm -rf "$CORE_DIR"
+ln -s "$PWD" "$CORE_DIR"
+
+# setup Homebrew environment
 export HOMEBREW_NO_AUTO_UPDATE=1
 export HOMEBREW_NO_ANALYTICS=1
 export HOMEBREW_FORCE_HOMEBREW_ON_LINUX=1
 export PATH="$(brew --repo)/Library/Homebrew/vendor/portable-ruby/current/bin:$PATH"
-brew tap homebrew/core
 
-# clone formulae.brew.sh with token so we can push back
-git clone https://$GITHUB_TOKEN@github.com/Homebrew/formulae.brew.sh
-
-# TODO: setup/decrypt analytics JSON
-#openssl aes-256-cbc -K $encrypted_973277d8afbb_key -iv $encrypted_973277d8afbb_iv -in formulae.brew.sh/.homebrew_analytics.json.enc -out formulae.brew.sh/.homebrew_analytics.json -d
+# setup SSH
+mkdir ~/.ssh
+chmod 700 ~/.ssh
+echo "$FORMULAE_DEPLOY_KEY" > ~/.ssh/id_ed25519
+chmod 600 ~/.ssh/id_ed25519
+git config --global core.sshCommand "ssh -i ~/.ssh/id_ed25519 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
 
+# clone formulae.brew.sh with SSH so we can push back
+git clone git@github.com:Homebrew/formulae.brew.sh
 cd formulae.brew.sh
 
+# setup analytics
+echo "$ANALYTICS_JSON_KEY" > ~/.homebrew_analytics.json
+unset HOMEBREW_NO_ANALYTICS
+
 # run rake (without a rake binary)
 ruby -e "load Gem.bin_path('rake', 'rake')"
+
+# commit and push generated files
+git commit -m '_data: update from Homebrew/core push' _data/
+git push

.travis.yml

@@ -1,41 +0,0 @@
-language: c
-os: linux
-compiler: gcc
-sudo: false
-
-deploy:
-  local-dir: formulae.brew.sh
-  repo: Homebrew/formulae.brew.sh
-  target-branch: master
-  verbose: true
-  provider: pages
-  skip-cleanup: true
-  github-token: $GITHUB_TOKEN
-  keep-history: true
-  on:
-    all_branches: true
-
-before_install:
-  - HOMEBREW_REPOSITORY="$HOME/Homebrew"
-  - export PATH="$HOMEBREW_REPOSITORY/bin:$PATH"
-  - export HOMEBREW_FORCE_HOMEBREW_ORG=1
-  - export HOMEBREW_BOTTLE_DOMAIN=https://homebrew.bintray.com
-  # umask 022 fixes Linux `brew tests` failures
-  - umask 022
-  - chmod 644 Formula/*.rb
-  - rm -rf $HOMEBREW_REPOSITORY
-  - travis_retry git clone --depth=1 https://github.com/Homebrew/brew "$HOMEBREW_REPOSITORY"
-  - HOMEBREW_TAP_DIR="$(brew --repo "$TRAVIS_REPO_SLUG")"
-  - mkdir -p "$HOMEBREW_TAP_DIR"
-  - rm -rf "$HOMEBREW_TAP_DIR"
-  - ln -s "$PWD" "$HOMEBREW_TAP_DIR"
-  # trigger vendored ruby installation
-  - brew help
-
-before_script:
-  - travis_retry git clone https://$GITHUB_TOKEN@github.com/Homebrew/formulae.brew.sh
-  - openssl aes-256-cbc -K $encrypted_973277d8afbb_key -iv $encrypted_973277d8afbb_iv -in formulae.brew.sh/.homebrew_analytics.json.enc -out formulae.brew.sh/.homebrew_analytics.json -d
-
-
-script:
-  - cd formulae.brew.sh && rake