Cleanup Travis CI config (#7848)

Summary:
We now only use Travis CI for testing RocksDB against Linux on:
* ppc64le
* arm64 (aarch64)

This is just some initial cleanup. I will add further ppc64le and arm64 jobs in a subsequent PR...

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7848

Reviewed By: jay-zhuang

Differential Revision: D25870782

Pulled By: akankshamahajan15

fbshipit-source-id: d5c264a58d83ab9601790fe89ee0f66772a472f8

.travis.yml

@@ -2,20 +2,18 @@ dist: xenial
 language: cpp
 os:
   - linux
-  - osx
 arch:
-  - amd64
   - arm64
   - ppc64le
 compiler:
   - clang
   - gcc
-osx_image: xcode9.4
 cache:
   - ccache
 
 addons:
   apt:
+    update: true
     sources:
       - ubuntu-toolchain-r-test
     packages:
@@ -26,15 +24,6 @@ addons:
       - liblzma-dev  # xv
       - libzstd-dev
       - zlib1g-dev
-  homebrew:
-    update: true
-    packages:
-      - ccache
-      - gflags
-      - lz4
-      - snappy
-      - xz
-      - zstd
 
 env:
   - TEST_GROUP=platform_dependent # 16-18 minutes
@@ -58,20 +47,6 @@ env:
 
 matrix:
   exclude:
-  - os: osx
-    env: JOB_NAME=cmake-gcc8
-  - os: osx
-    env: JOB_NAME=cmake-gcc9
-  - os: osx
-    env: JOB_NAME=cmake-gcc9-c++20
-  - os: osx
-    env: JOB_NAME=cmake-mingw
-  - os: osx
-    env: JOB_NAME=make-gcc4.8
-  - os: osx
-    arch: ppc64le
-  - os: osx
-    compiler: gcc
   - os : linux
     arch: arm64
     env: JOB_NAME=cmake-mingw
@@ -86,28 +61,6 @@ matrix:
     env: JOB_NAME=make-gcc4.8
   - os: linux
     compiler: clang
-  # With migration to CircleCI, exclude Linux/amd64 for pull requests
-  # (but build in branches for now)
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os : linux
-    arch: amd64
-  # Exclude most osx, arm64 and ppc64le tests for pull requests, but build in branches
-  # Temporarily disable ppc64le cmake test while snapd is broken
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: linux
-    arch: ppc64le
-    env: JOB_NAME=cmake
-  # Exclude all osx since it should be covered by CircleCI
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: TEST_GROUP=platform_dependent
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: JOB_NAME=cmake
-  # NB: the cmake build is a partial java test
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: TEST_GROUP=1
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -116,9 +69,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: TEST_GROUP=1
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: TEST_GROUP=2
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -127,9 +77,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: TEST_GROUP=2
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: TEST_GROUP=3
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -138,9 +85,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: TEST_GROUP=3
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os: osx
-    env: TEST_GROUP=4
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -149,9 +93,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: TEST_GROUP=4
-  - if: type = pull_request AND commit_message !~ /FULL_CI/ AND commit_message !~ /java/
-    os : osx
-    env: JOB_NAME=java_test
   - if: type = pull_request AND commit_message !~ /FULL_CI/ AND commit_message !~ /java/
     os : linux
     arch: arm64
@@ -160,9 +101,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: JOB_NAME=java_test
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os : osx
-    env: JOB_NAME=lite_build
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -171,9 +109,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: JOB_NAME=lite_build
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os : osx
-    env: JOB_NAME=examples
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -206,9 +141,6 @@ matrix:
     os: linux
     arch: ppc64le
     env: JOB_NAME=cmake-gcc9-c++20
-  - if: type = pull_request AND commit_message !~ /FULL_CI/
-    os : osx
-    env: JOB_NAME=status_checked
   - if: type = pull_request AND commit_message !~ /FULL_CI/
     os : linux
     arch: arm64
@@ -219,9 +151,6 @@ matrix:
     env: JOB_NAME=status_checked
 
 install:
-  - if [ "${TRAVIS_OS_NAME}" == osx ]; then
-      PATH=$PATH:/usr/local/opt/ccache/libexec;
-    fi
   - if [ "${JOB_NAME}" == cmake-gcc8 ]; then
       sudo apt-get install -y g++-8 || exit $?;
       CC=gcc-8 && CXX=g++-8;
@@ -237,22 +166,21 @@ install:
       sudo apt-get install -y g++-4.8 || exit $?;
       CC=gcc-4.8 && CXX=g++-4.8;
     fi
-  - if [[ "${JOB_NAME}" == cmake* ]] && [ "${TRAVIS_OS_NAME}" == linux ]; then
-      sudo apt-get install snapd && sudo snap install cmake --beta --classic || exit $?;
-      export PATH=/snap/bin:$PATH;
+  - |
+    if [[ "${JOB_NAME}" == cmake* ]]; then
+      sudo apt-get remove -y cmake cmake-data
+      export CMAKE_DEB="cmake-3.14.5-Linux-$(uname -m).deb"
+      export CMAKE_DEB_URL="https://rocksdb-deps.s3-us-west-2.amazonaws.com/cmake/${CMAKE_DEB}"
+      curl --silent --fail --show-error --location --output "${CMAKE_DEB}" "${CMAKE_DEB_URL}" || exit $?
+      sudo dpkg -i "${CMAKE_DEB}" || exit $?
+      which cmake && cmake --version
     fi
   - |
     if [[ "${JOB_NAME}" == java_test || "${JOB_NAME}" == cmake* ]]; then
       # Ensure JDK 8
-      if [ "${TRAVIS_OS_NAME}" == osx ]; then
-        brew tap AdoptOpenJDK/openjdk || exit $?
-        brew cask install adoptopenjdk8 || exit $?
-        export JAVA_HOME=$(/usr/libexec/java_home)
-      else
       sudo apt-get install -y openjdk-8-jdk || exit $?
       export PATH=/usr/lib/jvm/java-8-openjdk-$(dpkg --print-architecture)/bin:$PATH
       export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-$(dpkg --print-architecture)
-      fi
       echo "JAVA_HOME=${JAVA_HOME}"
       which java && java -version
       which javac && javac -version