Drop support for ruby 2.5 (#30699)

* Drop ruby 2.5 support

Rakefile

@@ -144,7 +144,7 @@ task 'gem:native', [:plat] do |t, args|
   verbose = ENV['V'] || '0'
 
   grpc_config = ENV['GRPC_CONFIG'] || 'opt'
-  ruby_cc_versions = ['3.1.0', '3.0.0', '2.7.0', '2.6.0', '2.5.0'].join(':')
+  ruby_cc_versions = ['3.1.0', '3.0.0', '2.7.0', '2.6.0'].join(':')
   selected_plat = "#{args[:plat]}"
 
   if RUBY_PLATFORM =~ /darwin/

templates/tools/dockerfile/ruby_deps.include

@@ -6,11 +6,11 @@ RUN apt-get update && apt-get install -y gnupg2 && apt-get clean
 RUN gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN \curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.5
+# Install Ruby 2.7
 RUN apt-get update && apt-get install -y procps && apt-get clean
-RUN /bin/bash -l -c "rvm install ruby-2.5"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5"
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler --no-document -v 1.9"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"

tools/dockerfile/distribtest/ruby_centos7_x64/Dockerfile

@@ -20,13 +20,13 @@ RUN yum update -y && yum install -y curl tar which
 RUN gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.3
-RUN /bin/bash -l -c "rvm install ruby-2.5.7"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5.7"
+# Install Ruby 2.7
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5.7' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler -v 1.17.3 --no-document"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"
 
 RUN mkdir /var/local/jenkins
 

tools/dockerfile/distribtest/ruby_stretch_x64_ruby_2_5/Dockerfile

@@ -1,42 +0,0 @@
-# Copyright 2015 gRPC authors.
-#
-# 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.
-
-FROM debian:stretch
-
-# Install Git and basic packages.
-RUN apt-get update && apt-get install -y \
-  gnupg2 \
-  procps \
-  curl \
-  gcc && apt-get clean
-
-#==================
-# Ruby dependencies
-
-# Install rvm
-RUN gpg2 --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
-RUN \curl -sSL https://get.rvm.io | bash -s stable
-
-# Install Ruby 2.5
-RUN /bin/bash -l -c "rvm install ruby-2.5.7"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5.7"
-RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
-RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5.7' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler -v 1.17.3 --no-document"
-
-RUN mkdir /var/local/jenkins
-
-# Define the default command.
-CMD ["bash"]

tools/dockerfile/distribtest/ruby_ubuntu1604_x64/Dockerfile

@@ -26,10 +26,10 @@ RUN apt-get update -y && apt-get install -y \
 RUN gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN \curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.4
-RUN /bin/bash -l -c "rvm install ruby-2.5.7"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5.7"
+# Install Ruby 2.7
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5.7' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler -v 1.17.3 --no-document"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"

tools/dockerfile/distribtest/ruby_ubuntu1804_x64/Dockerfile

@@ -14,6 +14,20 @@
 
 FROM ubuntu:18.04
 
-RUN apt-get update -y && apt-get install -y ruby-full
+# Install Git and basic packages.
+RUN apt-get update -y && apt-get install -y \
+  curl \
+  gnupg2 \
+  gcc && apt-get clean
 
-RUN gem install bundler
+# Install rvm
+RUN gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
+RUN \curl -sSL https://get.rvm.io | bash -s stable
+
+# Install Ruby 2.7
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
+RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
+RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"

tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile

@@ -86,14 +86,14 @@ RUN apt-get update && apt-get install -y gnupg2 && apt-get clean
 RUN gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN \curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.5
+# Install Ruby 2.7
 RUN apt-get update && apt-get install -y procps && apt-get clean
-RUN /bin/bash -l -c "rvm install ruby-2.5"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5"
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler --no-document -v 1.9"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"
 
 #=================
 # Install cmake

tools/dockerfile/interoptest/grpc_interop_ruby/build_interop.sh

@@ -27,7 +27,7 @@ ${name}')
 cp -r /var/local/jenkins/service_account $HOME || true
 
 cd /var/local/git/grpc
-rvm --default use ruby-2.5
+rvm --default use ruby-2.7
 
 # build Ruby interop client and server
-(cd src/ruby && gem install bundler -v 1.17.3 && bundle && bundle exec rake compile)
+(cd src/ruby && gem install bundler && bundle && bundle exec rake compile)

tools/dockerfile/test/ruby_debian11_arm64/Dockerfile

@@ -86,14 +86,14 @@ RUN apt-get update && apt-get install -y gnupg2 && apt-get clean
 RUN gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN \curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.5
+# Install Ruby 2.7
 RUN apt-get update && apt-get install -y procps && apt-get clean
-RUN /bin/bash -l -c "rvm install ruby-2.5"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5"
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler --no-document -v 1.9"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"
 
 #=================
 # Install cmake

tools/dockerfile/test/ruby_debian11_x64/Dockerfile

@@ -86,14 +86,14 @@ RUN apt-get update && apt-get install -y gnupg2 && apt-get clean
 RUN gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 RUN \curl -sSL https://get.rvm.io | bash -s stable
 
-# Install Ruby 2.5
+# Install Ruby 2.7
 RUN apt-get update && apt-get install -y procps && apt-get clean
-RUN /bin/bash -l -c "rvm install ruby-2.5"
-RUN /bin/bash -l -c "rvm use --default ruby-2.5"
+RUN /bin/bash -l -c "rvm install ruby-2.7"
+RUN /bin/bash -l -c "rvm use --default ruby-2.7"
 RUN /bin/bash -l -c "echo 'gem: --no-document' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.5' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler --no-document -v 1.9"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.7' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-document"
 
 #=================
 # Install cmake

tools/internal_ci/helper_scripts/prepare_build_macos_rc

@@ -83,7 +83,7 @@ then
     time rvm install "ruby-${RUBY_VERSION}"
   done;
   echo "Setting default ruby version."
-  rvm use 2.5.0 --default
+  rvm use 2.7.0 --default
   echo "Installing cocoapods."
   time gem install cocoapods --version 1.3.1 --no-document
   echo "Updating osx-ssl-certs."

tools/run_tests/artifacts/distribtest_targets.py

@@ -442,19 +442,16 @@ def targets():
         PythonDistribTest('linux', 'x64', 'arch', source=True),
         PythonDistribTest('linux', 'x64', 'ubuntu2004', source=True),
         # Ruby
-        RubyDistribTest('linux', 'x64', 'stretch', ruby_version='ruby_2_5'),
-        RubyDistribTest('linux', 'x64', 'stretch', ruby_version='ruby_2_6'),
         RubyDistribTest('linux',
                         'x64',
                         'stretch',
-                        ruby_version='ruby_2_7',
+                        ruby_version='ruby_2_6',
+                        source=True,
                         presubmit=True),
-        # TODO(apolcyn): add a ruby 3.0 test once protobuf adds support
         RubyDistribTest('linux',
                         'x64',
                         'stretch',
-                        ruby_version='ruby_2_5',
-                        source=True,
+                        ruby_version='ruby_2_7',
                         presubmit=True),
         RubyDistribTest('linux', 'x64', 'centos7'),
         RubyDistribTest('linux', 'x64', 'ubuntu1604'),

tools/run_tests/run_tests.py

@@ -809,11 +809,15 @@ class RubyLanguage(object):
                                  timeout_seconds=10 * 60,
                                  environ=_FORCE_ENVIRON_FOR_WRAPPERS)
         ]
+        # TODO(apolcyn): re-enable the following tests after
+        # https://bugs.ruby-lang.org/issues/15499 is fixed:
+        # They previously worked on ruby 2.5 but needed to be disabled
+        # after dropping support for ruby 2.5:
+        #   - src/ruby/end2end/channel_state_test.rb
+        #   - src/ruby/end2end/sig_int_during_channel_watch_test.rb
         for test in [
                 'src/ruby/end2end/sig_handling_test.rb',
-                'src/ruby/end2end/channel_state_test.rb',
                 'src/ruby/end2end/channel_closing_test.rb',
-                'src/ruby/end2end/sig_int_during_channel_watch_test.rb',
                 'src/ruby/end2end/killed_client_thread_test.rb',
                 'src/ruby/end2end/forking_client_test.rb',
                 'src/ruby/end2end/grpc_class_init_test.rb',