CI updates. (#118)

- Retire the use of travis for testing.
- Update buildkite config:
  - Enable buildifier testing (close to what was on travis, and is being improved.)
  - Update the config to now test the latests release and the latest green, replacing
    the "head" testing on travis.

.bazelci/presubmit.yml

@@ -1,27 +1,42 @@
 ---
-platforms:
+tasks:
-  ubuntu1404:
+  ubuntu1804_latest:
+    name: "Latest Bazel"
+    platform: ubuntu1804
+    bazel: latest
     build_targets:
     - "..."
     test_targets:
     - "..."
     test_flags:
     - "--test_env=PATH"
-  ubuntu1604:
+
+  ubuntu1604_latest:
+    name: "Latest Bazel"
+    platform: ubuntu1604
+    bazel: latest
     build_targets:
     - "..."
     test_targets:
     - "..."
     test_flags:
     - "--test_env=PATH"
-  macos:
+
+  macos_latest:
+    name: "Latest Bazel"
+    platform: macos
+    bazel: latest
     build_targets:
     - "..."
     test_targets:
     - "..."
     test_flags:
     - "--test_env=PATH"
-  windows:
+
+  windows_latest:
+    name: "Latest Bazel"
+    platform: windows
+    bazel: latest
     build_targets:
     - "..."
     test_targets:
@@ -30,3 +45,51 @@ platforms:
     # Shell tests don't run on windows.
     - "-//tests:analysis_test_e2e_test"
     - "-//tests:unittest_e2e_test"
+
+  ubuntu1804_last_green:
+    name: "Last Green Bazel"
+    platform: ubuntu1804
+    bazel: last_green
+    build_targets:
+    - "..."
+    test_targets:
+    - "..."
+    test_flags:
+    - "--test_env=PATH"
+
+  ubuntu1604_last_green:
+    name: "Last Green Bazel"
+    platform: ubuntu1604
+    bazel: last_green
+    build_targets:
+    - "..."
+    test_targets:
+    - "..."
+    test_flags:
+    - "--test_env=PATH"
+
+  macos_last_green:
+    name: "Last Green Bazel"
+    platform: macos
+    bazel: last_green
+    build_targets:
+    - "..."
+    test_targets:
+    - "..."
+    test_flags:
+    - "--test_env=PATH"
+
+  windows_last_green:
+    name: "Last Green Bazel"
+    platform: windows
+    bazel: last_green
+    build_targets:
+    - "..."
+    test_targets:
+    - "--"
+    - "..."
+    # Shell tests don't run on windows.
+    - "-//tests:analysis_test_e2e_test"
+    - "-//tests:unittest_e2e_test"
+
+buildifier: true

.travis.yml

@@ -1,34 +0,0 @@
-# Not really c++, but stops travis from listing a language.
-language: c++
-
-matrix:
-  include:
-    # -----------------------------------------------------------------
-    # Linux hosted tests
-
-    - os: linux
-      dist: trusty
-      sudo: false
-      env: BAZEL=HEAD
-    - os: linux
-      dist: trusty
-      sudo: false
-      env: BUILDIFIER=RELEASE
-
-    # -----------------------------------------------------------------
-    # macOS hosted tests
-
-    - os: osx
-      osx_image: xcode10.1
-      env: BAZEL=HEAD
-    # No need for a BUILDIFIER run on mac, the results will be the same.
-    # And linux boxes test faster on travis, so just use the one.
-
-before_install:
-  - ./.travis_install.sh
-
-script:
-  - ./.travis_build.sh
-
-notifications:
-  email: false

.travis_build.sh

@@ -1,76 +0,0 @@
-#!/bin/bash
-
-# Copyright 2018 The Bazel Authors. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -eu
-
-# -------------------------------------------------------------------------------------------------
-# Asked to do a bazel build.
-if [[ -n "${BAZEL:-}" ]]; then
-  bazel test --show_progress_rate_limit=30.0 //...
-fi
-
-# -------------------------------------------------------------------------------------------------
-# Asked to do a buildifier run.
-if [[ -n "${BUILDIFIER:-}" ]]; then
-  FOUND_ISSUES="no"
-
-  # buildifier supports BUILD/WORKSPACE/*.bzl files, this provides the args
-  # to reuse in all the finds.
-  FIND_ARGS=(
-      \(
-          -name BUILD
-          -o
-          -name WORKSPACE
-          -o
-          -name "*.bzl"
-      \)
-  )
-
-  # Check for format issues?
-  if [[ "${FORMAT:-yes}" == "yes" ]] ; then
-    echo "buildifier: validating formatting..."
-    if ! find . "${FIND_ARGS[@]}" -print | xargs buildifier -d ; then
-      echo ""
-      echo "Please download the latest buildifier"
-      echo "   https://github.com/bazelbuild/buildtools/releases"
-      echo "and run it over the changed BUILD/.bzl files."
-      echo ""
-      FOUND_ISSUES="yes"
-    fi
-  fi
-
-  # Check for lint issues?
-  if [[ "${LINT:-yes}" == "yes" ]] ; then
-    echo "buildifier: running lint checks..."
-    # NOTE: buildifier defaults to --mode=fix, so these lint runs also
-    # reformat the files. But since this is on travis, that is fine.
-    # https://github.com/bazelbuild/buildtools/issues/453
-    if ! find . "${FIND_ARGS[@]}" -print | xargs buildifier --lint=warn ; then
-      echo ""
-      echo "Please download the latest buildifier"
-      echo "   https://github.com/bazelbuild/buildtools/releases"
-      echo "and run it with --lint=(warn|fix) over the changed BUILD/.bzl files"
-      echo "and make the edits as needed."
-      echo ""
-      FOUND_ISSUES="yes"
-    fi
-  fi
-
-  # Anything?
-  if [[ "${FOUND_ISSUES}" != "no" ]] ; then
-    exit 1
-  fi
-fi

.travis_install.sh

@@ -1,107 +0,0 @@
-#!/bin/bash
-
-# Copyright 2018 The Bazel Authors. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -eux
-
-if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
-  OS=darwin
-else
-  OS=linux
-fi
-
-# -------------------------------------------------------------------------------------------------
-# Helper to use the github redirect to find the latest release.
-function github_latest_release_tag() {
-  local PROJECT=$1
-  curl \
-      -s \
-      -o /dev/null \
-      --write-out '%{redirect_url}' \
-      "https://github.com/${PROJECT}/releases/latest" \
-  | sed -e 's,https://.*/releases/tag/\(.*\),\1,'
-}
-
-# -------------------------------------------------------------------------------------------------
-# Helper to get a download url out of bazel build metadata file.
-function url_from_bazel_manifest() {
-  local MANIFEST_URL=$1
-    if [[ "${OS}" == "darwin" ]]; then
-      local JSON_OS="macos"
-    else
-      local JSON_OS="ubuntu1404"
-    fi
-  wget -O - "${MANIFEST_URL}" \
-    | python -c "import json; import sys; print json.load(sys.stdin)['platforms']['${JSON_OS}']['url']"
-}
-
-# -------------------------------------------------------------------------------------------------
-# Helper to install bazel.
-function install_bazel() {
-  local VERSION="${1}"
-
-  if [[ "${VERSION}" == "RELEASE" ]]; then
-    VERSION="$(github_latest_release_tag bazelbuild/bazel)"
-  fi
-
-  # macOS and trusty images have jdk8, so install bazel without jdk.
-  if [[ "${VERSION}" == "HEAD" ]]; then
-    # bazelbuild/continuous-integration/issues/234 - they don't seem to have an installed
-    # just raw binaries?
-    mkdir -p "$HOME/bin"
-    wget -O "$HOME/bin/bazel" \
-      "$(url_from_bazel_manifest https://storage.googleapis.com/bazel-builds/metadata/latest.json)"
-    chmod +x "$HOME/bin/bazel"
-  else
-    wget -O install.sh \
-      "https://github.com/bazelbuild/bazel/releases/download/${VERSION}/bazel-${VERSION}-without-jdk-installer-${OS}-x86_64.sh"
-    chmod +x install.sh
-    ./install.sh --user
-    rm -f install.sh
-  fi
-
-  bazel version
-}
-
-# -------------------------------------------------------------------------------------------------
-# Helper to install buildifier.
-function install_buildifier() {
-  local VERSION="${1}"
-
-  if [[ "${VERSION}" == "RELEASE" ]]; then
-    VERSION="$(github_latest_release_tag bazelbuild/buildtools)"
-  fi
-
-  if [[ "${VERSION}" == "HEAD" ]]; then
-    echo "buildifier head is not supported"
-    exit 1
-  fi
-
-  if [[ "${OS}" == "darwin" ]]; then
-    URL="https://github.com/bazelbuild/buildtools/releases/download/${VERSION}/buildifier.osx"
-  else
-    URL="https://github.com/bazelbuild/buildtools/releases/download/${VERSION}/buildifier"
-  fi
-
-  mkdir -p "$HOME/bin"
-  wget -O "${HOME}/bin/buildifier" "${URL}"
-  chmod +x "${HOME}/bin/buildifier"
-  buildifier --version
-}
-
-# -------------------------------------------------------------------------------------------------
-# Install what is requested.
-[[ -z "${BAZEL:-}" ]] || install_bazel "${BAZEL}"
-[[ -z "${BUILDIFIER:-}" ]] || install_buildifier "${BUILDIFIER}"

README.md

@@ -1,6 +1,5 @@
 # Skylib
 
-[![Build Status](https://travis-ci.org/bazelbuild/bazel-skylib.svg?branch=master)](https://travis-ci.org/bazelbuild/bazel-skylib)
 [![Build status](https://badge.buildkite.com/921dc61e2d3a350ec40efb291914360c0bfa9b6196fa357420.svg)](https://buildkite.com/bazel/bazel-skylib)
 
 Skylib is a standard library that provides functions useful for manipulating