text: # Copyright 2017 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.
  
  # Defines languages, runtimes and releases for backward compatibility testing
  
  from collections import OrderedDict
  
  
  def get_github_repo(lang):
      return {
          'dart': 'https://github.com/grpc/grpc-dart.git',
          'go': 'https://github.com/grpc/grpc-go.git',
          'java': 'https://github.com/grpc/grpc-java.git',
          'node': 'https://github.com/grpc/grpc-node.git',
          # all other languages use the grpc.git repo.
      }.get(lang, 'https://github.com/grpc/grpc.git')
  
  
  def get_release_tags(lang):
      """Returns list of known releases for given language."""
      return list(LANG_RELEASE_MATRIX[lang].keys())
  
  
  def get_runtimes_for_lang_release(lang, release):
      """Get list of valid runtimes for given release of lang."""
      runtimes = list(LANG_RUNTIME_MATRIX[lang])
      release_info = LANG_RELEASE_MATRIX[lang].get(release)
      if release_info and release_info.runtimes:
          runtimes = list(release_info.runtimes)
      return runtimes
  
  
  def should_build_docker_interop_image_from_release_tag(lang):
      # All dockerfile definitions live in grpc/grpc repository.
      # For language that have a separate repo, we need to use
      # dockerfile definitions from head of grpc/grpc.
      if lang in ['go', 'java', 'node']:
          return False
      return True
  
  
  # Dictionary of default runtimes per language
  LANG_RUNTIME_MATRIX = {
      'cxx': ['cxx'],  # This is actually debian8.
      'go': ['go1.8', 'go1.11', 'go1.16'],
      'java': ['java'],
      'python': ['python', 'pythonasyncio'],
      'node': ['node'],
      'ruby': ['ruby'],
      'php': ['php7'],
      'csharp': ['csharp', 'csharpcoreclr'],
  }
  
  
  class ReleaseInfo:
      """Info about a single release of a language"""
  
      def __init__(self, patch=[], runtimes=[], testcases_file=None):
          self.patch = patch
          self.runtimes = runtimes
          self.testcases_file = testcases_file
  
  
  # Dictionary of known releases for given language.
  LANG_RELEASE_MATRIX = {
      'cxx':
          OrderedDict([
              ('v1.0.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.1.4', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.2.5', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.3.9', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.4.2', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.6.6', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.7.2', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.8.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.9.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.10.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.11.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.12.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.13.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.14.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.15.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.16.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.17.1', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.18.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.19.0', ReleaseInfo(testcases_file='cxx__v1.0.1')),
              ('v1.20.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.21.4', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.22.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.22.1', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.23.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.24.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.25.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.26.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.27.3', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.30.0', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.31.1', ReleaseInfo(testcases_file='cxx__v1.31.1')),
              ('v1.32.0', ReleaseInfo()),
              ('v1.33.2', ReleaseInfo()),
              ('v1.34.0', ReleaseInfo()),
              ('v1.35.0', ReleaseInfo()),
              ('v1.36.3', ReleaseInfo()),
              ('v1.37.0', ReleaseInfo()),
              ('v1.38.0', ReleaseInfo()),
              ('v1.39.0', ReleaseInfo()),
              ('v1.41.1', ReleaseInfo()),
              ('v1.42.0', ReleaseInfo()),
          ]),
      'go':
          OrderedDict([
              ('v1.0.5',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.2.1',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.3.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.4.2',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.5.2',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.6.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.7.4',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.8.2',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.9.2',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.10.1',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.11.3',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.12.2',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.13.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.14.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.15.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.16.0',
               ReleaseInfo(runtimes=['go1.8'], testcases_file='go__v1.0.5')),
              ('v1.17.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.0.5')),
              ('v1.18.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.0.5')),
              ('v1.19.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.0.5')),
              ('v1.20.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.21.3',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.22.3',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.23.1',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.24.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.25.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.26.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.27.1',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.28.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.29.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.30.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.31.1',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.32.0',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.33.1',
               ReleaseInfo(runtimes=['go1.11'], testcases_file='go__v1.20.0')),
              ('v1.34.0', ReleaseInfo(runtimes=['go1.11'])),
              ('v1.35.0', ReleaseInfo(runtimes=['go1.11'])),
              ('v1.36.0', ReleaseInfo(runtimes=['go1.11'])),
              ('v1.37.0', ReleaseInfo(runtimes=['go1.11'])),
              # NOTE: starting from release v1.38.0, use runtimes=['go1.16']
              ('v1.38.1', ReleaseInfo(runtimes=['go1.16'])),
              ('v1.39.1', ReleaseInfo(runtimes=['go1.16'])),
              ('v1.40.0', ReleaseInfo(runtimes=['go1.16'])),
              ('v1.41.0', ReleaseInfo(runtimes=['go1.16'])),
              ('v1.42.0', ReleaseInfo(runtimes=['go1.16'])),
          ]),
      'java':
          OrderedDict([
              ('v1.0.3',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.1.2',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.2.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.3.1',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.4.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.5.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.6.1',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.7.1', ReleaseInfo(testcases_file='java__v1.0.3')),
              ('v1.8.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.9.1',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.10.1',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.11.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.12.1', ReleaseInfo(testcases_file='java__v1.0.3')),
              ('v1.13.2', ReleaseInfo(testcases_file='java__v1.0.3')),
              ('v1.14.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.15.1', ReleaseInfo(testcases_file='java__v1.0.3')),
              ('v1.16.1',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.17.2', ReleaseInfo(testcases_file='java__v1.0.3')),
              ('v1.18.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.19.0',
               ReleaseInfo(runtimes=['java_oracle8'],
                           testcases_file='java__v1.0.3')),
              ('v1.20.0', ReleaseInfo(runtimes=['java_oracle8'])),
              ('v1.21.1', ReleaseInfo()),
              ('v1.22.2', ReleaseInfo()),
              ('v1.23.0', ReleaseInfo()),
              ('v1.24.0', ReleaseInfo()),
              ('v1.25.0', ReleaseInfo()),
              ('v1.26.1', ReleaseInfo()),
              ('v1.27.2', ReleaseInfo()),
              ('v1.28.1', ReleaseInfo()),
              ('v1.29.0', ReleaseInfo()),
              ('v1.30.2', ReleaseInfo()),
              ('v1.31.2', ReleaseInfo()),
              ('v1.32.3', ReleaseInfo()),
              ('v1.33.1', ReleaseInfo()),
              ('v1.34.1', ReleaseInfo()),
              ('v1.35.1', ReleaseInfo()),
              ('v1.36.1', ReleaseInfo()),
              ('v1.37.1', ReleaseInfo()),
              ('v1.38.1', ReleaseInfo()),
              ('v1.39.0', ReleaseInfo()),
              ('v1.40.1', ReleaseInfo()),
              ('v1.40.2', ReleaseInfo()),
              ('v1.41.0', ReleaseInfo()),
              ('v1.41.1', ReleaseInfo()),
              ('v1.42.1', ReleaseInfo()),
          ]),
      'python':
          OrderedDict(
              [
                  ('v1.0.x',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.1.4',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.2.5',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.3.9',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.4.2',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.6.6',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.7.2',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.8.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.9.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.10.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.0.x')),
                  ('v1.11.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.12.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.13.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.14.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.15.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.16.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.17.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.11.1')),
                  ('v1.18.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.19.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.20.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.21.4',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.22.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.22.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.23.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.24.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.25.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.26.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.27.3',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.30.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.31.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.32.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.33.2',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.34.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.35.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.36.3',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.37.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.38.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.39.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.18.0')),
                  ('v1.41.1',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.41.1')),
                  ('v1.42.0',
                   ReleaseInfo(runtimes=['python'],
                               testcases_file='python__v1.41.1')),
              ]),
      'node':
          OrderedDict([
              ('v1.0.1', ReleaseInfo(testcases_file='node__v1.0.1')),
              ('v1.1.4', ReleaseInfo(testcases_file='node__v1.1.4')),
              ('v1.2.5', ReleaseInfo(testcases_file='node__v1.1.4')),
              ('v1.3.9', ReleaseInfo(testcases_file='node__v1.1.4')),
              ('v1.4.2', ReleaseInfo(testcases_file='node__v1.1.4')),
              ('v1.6.6', ReleaseInfo(testcases_file='node__v1.1.4')),
              # TODO: https://github.com/grpc/grpc-node/issues/235.
              # ('v1.7.2', ReleaseInfo()),
              ('v1.8.4', ReleaseInfo()),
              ('v1.9.1', ReleaseInfo()),
              ('v1.10.0', ReleaseInfo()),
              ('v1.11.3', ReleaseInfo()),
              ('v1.12.4', ReleaseInfo()),
          ]),
      'ruby':
          OrderedDict([
              ('v1.0.1',
               ReleaseInfo(patch=[
                   'tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile',
                   'tools/dockerfile/interoptest/grpc_interop_ruby/build_interop.sh',
               ],
                           testcases_file='ruby__v1.0.1')),
              ('v1.1.4', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.2.5', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.3.9', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.4.2', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.6.6', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.7.2', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.8.0', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.9.1', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.10.1', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.11.1', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.12.0', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.13.0', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.14.1', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.15.0', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.16.0', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.17.1', ReleaseInfo(testcases_file='ruby__v1.1.4')),
              ('v1.18.0',
               ReleaseInfo(patch=[
                   'tools/dockerfile/interoptest/grpc_interop_ruby/build_interop.sh',
               ])),
              ('v1.19.0', ReleaseInfo()),
              ('v1.20.0', ReleaseInfo()),
              ('v1.21.4', ReleaseInfo()),
              ('v1.22.0', ReleaseInfo()),
              ('v1.22.1', ReleaseInfo()),
              ('v1.23.0', ReleaseInfo()),
              ('v1.24.0', ReleaseInfo()),
              ('v1.25.0', ReleaseInfo()),
              # TODO: https://github.com/grpc/grpc/issues/18262.
              # If you are not encountering the error in above issue
              # go ahead and upload the docker image for new releases.
              ('v1.26.0', ReleaseInfo()),
              ('v1.27.3', ReleaseInfo()),
              ('v1.30.0', ReleaseInfo()),
              ('v1.31.1', ReleaseInfo()),
              ('v1.32.0', ReleaseInfo()),
              ('v1.33.2', ReleaseInfo()),
              ('v1.34.0', ReleaseInfo()),
              ('v1.35.0', ReleaseInfo()),
              ('v1.36.3', ReleaseInfo()),
              ('v1.37.0', ReleaseInfo()),
              ('v1.38.0', ReleaseInfo()),
              ('v1.39.0', ReleaseInfo()),
              ('v1.41.1', ReleaseInfo()),
              ('v1.42.0', ReleaseInfo()),
          ]),
      'php':
          OrderedDict([
              ('v1.0.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.1.4', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.2.5', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.3.9', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.4.2', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.6.6', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.7.2', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.8.0', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.9.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.10.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.11.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.12.0', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.13.0', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.14.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.15.0', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.16.0', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.17.1', ReleaseInfo(testcases_file='php__v1.0.1')),
              ('v1.18.0', ReleaseInfo()),
              # v1.19 and v1.20 were deliberately omitted here because of an issue.
              # See https://github.com/grpc/grpc/issues/18264
              ('v1.21.4', ReleaseInfo()),
              ('v1.22.0', ReleaseInfo()),
              ('v1.22.1', ReleaseInfo()),
              ('v1.23.0', ReleaseInfo()),
              ('v1.24.0', ReleaseInfo()),
              ('v1.25.0', ReleaseInfo()),
              ('v1.26.0', ReleaseInfo()),
              ('v1.27.3', ReleaseInfo()),
              ('v1.30.0', ReleaseInfo()),
              ('v1.31.1', ReleaseInfo()),
              ('v1.32.0', ReleaseInfo()),
              ('v1.33.2', ReleaseInfo()),
              ('v1.34.0', ReleaseInfo()),
              ('v1.35.0', ReleaseInfo()),
              ('v1.36.3', ReleaseInfo()),
              ('v1.37.0', ReleaseInfo()),
              ('v1.38.0', ReleaseInfo()),
              ('v1.39.0', ReleaseInfo()),
              ('v1.41.1', ReleaseInfo()),
              ('v1.42.0', ReleaseInfo()),
          ]),
      'csharp':
          OrderedDict([
              ('v1.0.1',
               ReleaseInfo(patch=[
                   'tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile',
                   'tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile',
               ],
                           testcases_file='csharp__v1.1.4')),
              ('v1.1.4', ReleaseInfo(testcases_file='csharp__v1.1.4')),
              ('v1.2.5', ReleaseInfo(testcases_file='csharp__v1.1.4')),
              ('v1.3.9', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.4.2', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.6.6', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.7.2', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.8.0', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.9.1', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.10.1', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.11.1', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.12.0', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.13.0', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.14.1', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.15.0', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.16.0', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.17.1', ReleaseInfo(testcases_file='csharp__v1.3.9')),
              ('v1.18.0', ReleaseInfo(testcases_file='csharp__v1.18.0')),
              ('v1.19.0', ReleaseInfo(testcases_file='csharp__v1.18.0')),
              ('v1.20.0', ReleaseInfo()),
              ('v1.21.4', ReleaseInfo()),
              ('v1.22.0', ReleaseInfo()),
              ('v1.22.1', ReleaseInfo()),
              ('v1.23.0', ReleaseInfo()),
              ('v1.24.0', ReleaseInfo()),
              ('v1.25.0', ReleaseInfo()),
              ('v1.26.0', ReleaseInfo()),
              ('v1.27.3', ReleaseInfo()),
              ('v1.30.0', ReleaseInfo()),
              ('v1.31.1', ReleaseInfo()),
              ('v1.32.0', ReleaseInfo()),
              ('v1.33.2', ReleaseInfo()),
              ('v1.34.0', ReleaseInfo()),
              ('v1.35.0', ReleaseInfo()),
              ('v1.36.3', ReleaseInfo()),
              ('v1.37.0', ReleaseInfo()),
              ('v1.38.1', ReleaseInfo()),
              ('v1.39.1', ReleaseInfo()),
              ('v1.41.1', ReleaseInfo()),
              ('v1.42.0', ReleaseInfo()),
          ]),
  }
  