chore: Extract generator into google-apis-generator gem (#2143)

google-api-client/Gemfile

@@ -4,6 +4,7 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'google-apis-core', path: '../google-apis-core'
+gem 'google-apis-generator', path: '../google-apis-generator'
 
 group :development do
   gem 'bundler', '>= 1.7'

google-api-client/google-api-client.gemspec

@@ -16,16 +16,13 @@ Gem::Specification.new do |gem|
   gem.files         = Dir.glob("lib/**/*") +
                       Dir.glob("generated/**/*.rb") +
                       Dir.glob("docs/**/*") +
-                      Dir.glob("bin/**/*") +
                       Dir.glob("*.md") +
                       [".yardopts", "LICENSE"]
 
-  gem.executables   = gem.files.grep(%r{^bin/}) { |f| File.basename(f) }
   gem.require_paths = %w[lib generated]
 
   gem.required_ruby_version = '>= 2.4'
 
   gem.add_runtime_dependency 'google-apis-core', '~> 0.1'
-  gem.add_development_dependency 'thor', '~> 0.19'
+  gem.add_runtime_dependency 'google-apis-generator', '~> 0.1'
-  gem.add_development_dependency 'activesupport', '>= 4.2', '< 5.1'
 end

google-apis-core/OVERVIEW.md

@@ -1,17 +1,20 @@
-# Core classes for Google REST Clients
+# Generator for Google REST Clients
 
-This library includes common base classes and dependencies used by legacy REST
+This library implements the code generator used by legacy REST clients for
-clients for Google APIs. It is used by client libraries, but you should not
+Google APIs. It automatically generates client gems given discovery documents.
-need to install it by itself.
+Google-managed clients for publicly-available APIs are maintained using this
+tool, and users may also use it to generate clients for private or early-access
+APIs.
 
-## Documentation
+## Usage
 
-More detailed descriptions of the Google legacy REST clients are available in two documents.
+To generate from a local discovery file:
 
- *  The [Usage Guide](https://github.com/googleapis/google-api-ruby-client/blob/master/docs/usage-guide.md) discusses how to make API calls, how to use the provided data structures, and how to work the various features of the client library, including media upload and download, error handling, retries, pagination, and logging.
+    $ generate-api gen <outdir> --file=<path>
- *  The [Auth Guide](https://github.com/googleapis/google-api-ruby-client/blob/master/docs/auth-guide.md) discusses authentication in the client libraries, including API keys, OAuth 2.0, service accounts, and environment variables.
 
-For reference information on specific calls in the clients, see the {Google::Apis class reference docs}.
+A URL can also be specified:
+
+    $ generate-api gen <outdir> --url=<url>
 
 ## License
 

google-apis-generator/.yardopts

@@ -0,0 +1,13 @@
+--hide-void-return
+--no-private
+--verbose
+--markup-provider=redcarpet
+--markup=markdown
+--title=google-apis-generator
+--main OVERVIEW.md
+
+lib/**/*.rb
+-
+OVERVIEW.md
+CHANGELOG.md
+LICENSE.md

google-apis-generator/CHANGELOG.md

@@ -0,0 +1,5 @@
+# Release History
+
+### v0.1.0 (2021-01-01)
+
+* Initial release, extracted from google-api-client.

google-apis-generator/Gemfile

@@ -0,0 +1,40 @@
+source 'https://rubygems.org'
+
+gemspec
+
+group :development do
+  gem 'bundler', '>= 1.7'
+  gem 'rake', '~> 11.2'
+  gem 'rspec', '~> 3.1'
+  gem 'json_spec', '~> 1.1'
+  gem 'webmock', '~> 2.1'
+  gem 'simplecov', '~> 0.12'
+  gem 'coveralls', '~> 0.8'
+  gem 'rubocop', '~> 0.49.0'
+  gem 'launchy', '~> 2.4'
+  gem 'dotenv', '~> 2.0'
+  gem 'fakefs', '~> 0.6', require: "fakefs/safe"
+  gem 'google-id-token', '~> 1.3'
+  gem 'os', '~> 0.9'
+  gem 'rmail', '~> 1.1'
+  gem 'redis', '~> 3.2'
+  gem 'logging', '~> 2.2'
+  gem 'opencensus', '~> 0.4'
+  gem 'httparty'
+end
+
+platforms :jruby do
+  group :development do
+    gem 'jruby-openssl'
+  end
+end
+
+platforms :ruby do
+  group :development do
+    gem 'yard', '~> 0.9', '>= 0.9.11'
+    gem 'redcarpet', '~> 3.2'
+    gem 'github-markup', '~> 1.3'
+    gem 'pry-doc', '~> 0.8'
+    gem 'pry-byebug', '~> 3.2'
+  end
+end

google-apis-generator/OVERVIEW.md

@@ -0,0 +1,22 @@
+# Core classes for Google REST Clients
+
+This library includes common base classes and dependencies used by legacy REST
+clients for Google APIs. It is used by client libraries, but you should not
+need to install it by itself.
+
+## Documentation
+
+More detailed descriptions of the Google legacy REST clients are available in two documents.
+
+ *  The [Usage Guide](https://github.com/googleapis/google-api-ruby-client/blob/master/docs/usage-guide.md) discusses how to make API calls, how to use the provided data structures, and how to work the various features of the client library, including media upload and download, error handling, retries, pagination, and logging.
+ *  The [Auth Guide](https://github.com/googleapis/google-api-ruby-client/blob/master/docs/auth-guide.md) discusses authentication in the client libraries, including API keys, OAuth 2.0, service accounts, and environment variables.
+
+For reference information on specific calls in the clients, see the {Google::Apis class reference docs}.
+
+## License
+
+This library is licensed under Apache 2.0. Full license text is available in the {file:LICENSE.md LICENSE}.
+
+## Support
+
+Please [report bugs at the project on Github](https://github.com/google/google-api-ruby-client/issues). Don't hesitate to [ask questions](http://stackoverflow.com/questions/tagged/google-api-ruby-client) about the client or APIs on [StackOverflow](http://stackoverflow.com).

google-apis-generator/Rakefile

@@ -0,0 +1,38 @@
+require "bundler/gem_tasks"
+task :release_gem do
+  Rake::Task["build"].invoke
+  Rake::Task["release:rubygem_push"].invoke
+end
+
+require 'rubocop/rake_task'
+desc 'Run RuboCop on the lib directory'
+RuboCop::RakeTask.new(:rubocop) do |task|
+  task.patterns = ['lib/**/*.rb']
+  # only show the files with failures
+  task.formatters = ['progress']
+  # don't abort rake on failure
+  task.fail_on_error = false
+end
+
+require 'rake/clean'
+CLOBBER.include('coverage', 'doc')
+CLEAN.include('.yardoc')
+
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:spec)
+
+begin
+	require 'yard'
+	require 'yard/rake/yardoc_task'
+	YARD::Rake::YardocTask.new do |t|
+  	t.files   = ['lib/**/*.rb', 'generated/**/*.rb']
+  	t.options = ['--verbose', '--markup', 'markdown']
+	end
+rescue LoadError
+  task :yard
+  puts "YARD not available"
+end
+
+task :ci => [:spec, :yard, :build]
+
+task :default => :ci

google-apis-generator/bin/generate-api

@@ -1,16 +1,14 @@
 #!/usr/bin/env ruby
 
-begin
+require 'thor'
-  require 'thor'
-rescue LoadError => e
-  puts "Thor is required. Please install the gem with development dependencies."
-  exit 1
-end
-
 require 'open-uri'
-require 'google/apis/discovery_v1'
 require 'logger'
 require 'psych'
+require 'active_support'
+require 'active_support/core_ext'
+require 'google/apis'
+require 'google/apis/generator'
+require 'google/apis/discovery_v1'
 
 module Google
   class ApiGenerator < Thor
@@ -21,8 +19,8 @@ module Google
 
     include Thor::Actions
 
-    Google::Apis::ClientOptions.default.application_name = "generate-api"
+    Google::Apis::ClientOptions.default.application_name = "google-apis-generator"
-    Google::Apis::ClientOptions.default.application_version = Google::Apis::VERSION
+    Google::Apis::ClientOptions.default.application_version = Google::Apis::Generator::VERSION
 
     Discovery = Google::Apis::DiscoveryV1
 
@@ -31,8 +29,6 @@ module Google
                    verbose: :boolean, names: :string, names_out: :string, api: :string,
                    clean: :boolean, spot_check: :boolean
     def gen(dir)
-      ensure_active_support
-      require 'google/apis/generator'
 
       self.destination_root = dir
       Google::Apis.logger.level = Logger::DEBUG if options[:verbose]
@@ -194,26 +190,13 @@ module Google
       end
 
       def updater
-        @updater ||= begin
+        @updater ||= Google::Apis::Generator::Updater.new
-          require 'google/apis/generator/updater'
-          Google::Apis::Generator::Updater.new
-        end
       end
 
       def api_list_config
         @api_list_config ||= Psych.load_file(__dir__ + "/../../api_list_config.yaml")
       end
 
-      def ensure_active_support
-        begin
-          require 'active_support'
-          require 'active_support/inflector'
-          require 'active_support/core_ext'
-        rescue LoadError => e
-          error_and_exit('ActiveSupport is required. Please run:', 'gem install activesupport')
-        end
-      end
-
       def error_and_exit(*messages)
         messages.each { |msg| error(msg) }
         exit 1

google-apis-generator/google-apis-generator.gemspec

@@ -0,0 +1,28 @@
+require File.expand_path("lib/google/apis/generator/version", __dir__)
+
+Gem::Specification.new do |gem|
+  gem.name = "google-apis-generator"
+  gem.version = Google::Apis::Generator::VERSION
+  gem.authors = ["Google LLC"]
+  gem.email = "googleapis-packages@google.com"
+  gem.summary = "Code generator for legacy Google REST clients"
+  gem.homepage = "https://github.com/google/google-api-ruby-client"
+  gem.license = "Apache-2.0"
+  gem.metadata = {
+    "bug_tracker_uri" => "https://github.com/googleapis/google-api-ruby-client/issues",
+    "changelog_uri" => "https://github.com/googleapis/google-api-ruby-client/tree/master/google-apis-generator/CHANGELOG.md",
+    "documentation_uri" => "https://googleapis.dev/ruby/google-apis-core/v#{Google::Apis::Generator::VERSION}",
+    "source_code_uri" => "https://github.com/googleapis/google-api-ruby-client/tree/master/google-apis-generator"
+  }
+
+  gem.files = Dir.glob("lib/**/*.rb") + Dir.glob("bin/*") + Dir.glob("*.md") + [".yardopts"]
+  gem.executables = ["generate-api"]
+  gem.require_paths = ["lib"]
+
+  gem.required_ruby_version = ">= 2.4"
+  gem.add_runtime_dependency "activesupport", ">= 5.0"
+  gem.add_runtime_dependency "gems", "~> 1.2"
+  gem.add_runtime_dependency "google-apis-core", "~> 0.1"
+  gem.add_runtime_dependency "google-apis-discovery_v1", "~> 0.0"
+  gem.add_runtime_dependency "thor", "~> 0.20"
+end

google-apis-generator/lib/google/apis/generator.rb

@@ -16,7 +16,10 @@ require 'google/apis/discovery_v1'
 require 'google/apis/generator/annotator'
 require 'google/apis/generator/model'
 require 'google/apis/generator/template'
+require 'google/apis/generator/updater'
 require 'google/apis/generator/version'
+require 'active_support'
+require 'active_support/core_ext'
 require 'active_support/inflector'
 require 'yaml'
 

google-apis-generator/lib/google/apis/generator/helpers.rb

@@ -1,3 +1,5 @@
+require 'active_support/inflector'
+
 module Google
   module Apis
     # @private

google-apis-generator/lib/google/apis/generator/templates/dot-rspec.tmpl

@@ -0,0 +1,2 @@
+--color
+--format documentation

google-apis-generator/lib/google/apis/generator/templates/license.md.tmpl

@@ -0,0 +1,202 @@
+
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google-apis-generator/spec/spec_helper.rb

@@ -0,0 +1,153 @@
+# Copyright 2015 Google Inc.
+#
+# 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.
+
+SPEC_DIR = File.expand_path(File.dirname(__FILE__))
+ROOT_DIR = File.expand_path(File.join(SPEC_DIR, '..'))
+LIB_DIR = File.expand_path(File.join(ROOT_DIR, 'lib'))
+GENERATED_DIR = File.expand_path(File.join(ROOT_DIR, 'generated'))
+FIXTURES_DIR = File.expand_path(File.join(SPEC_DIR, 'fixtures'))
+
+$LOAD_PATH.uniq!
+
+if defined?(JRUBY_VERSION)
+  puts 'Skipping coverage on JRuby'
+else
+  # set up coverage
+  require 'simplecov'
+  require 'coveralls'
+
+  SimpleCov.formatters = [
+    Coveralls::SimpleCov::Formatter,
+    SimpleCov::Formatter::HTMLFormatter
+  ]
+  SimpleCov.start do
+    add_filter '/spec/'
+    add_filter '/generated/'
+  end
+end
+
+require 'rspec'
+require 'webmock/rspec'
+require 'fakefs/spec_helpers'
+require 'json_spec'
+require 'logging'
+require 'ostruct'
+require 'rspec/logging_helper'
+require 'google/apis'
+require 'google/apis/core/base_service'
+
+# Configure RSpec to capture log messages for each test. The output from the
+# logs will be stored in the @log_output variable. It is a StringIO instance.
+RSpec.configure do |config|
+  include RSpec::LoggingHelper
+  config.include FakeFS::SpecHelpers, fakefs: true
+  config.include JsonSpec::Helpers
+  config.include WebMock::API
+  config.capture_log_messages
+
+  Google::Apis.logger.level = Logger::DEBUG
+  WebMock::Config.instance.query_values_notation = :flat_array
+end
+
+[JsonSpec::Matchers::BeJsonEql,
+ JsonSpec::Matchers::IncludeJson,
+ JsonSpec::Matchers::HaveJsonType,
+ JsonSpec::Matchers::HaveJsonSize,
+ JsonSpec::Matchers::HaveJsonPath].each do |klass|
+  klass.send(:alias_method, :===, :matches?)
+end
+
+RSpec.shared_context 'HTTP client' do
+  let(:client) do
+    Google::Apis::Core::BaseService.new('', '').client
+  end
+end
+
+module TestHelpers
+  include WebMock::API
+  include WebMock::Matchers
+end
+
+# Enable retries for tests
+Google::Apis::RequestOptions.default.retries = 5
+
+# Allow testing different adapters
+Google::Apis::ClientOptions.default.use_net_http = true if ENV['USE_NET_HTTP']
+# Temporarily patch WebMock to allow chunked responses for Net::HTTP
+module Net
+  module WebMockHTTPResponse
+    def eval_chunk(chunk)
+      chunk if chunk.is_a?(String)
+      chunk.read if chunk.is_a?(IO)
+      chunk.call if chunk.is_a?(Proc)
+      fail chunk if chunk.is_a?(Class)
+      chunk
+    end
+
+    def read_body(dest = nil, &block)
+      if !(defined?(@__read_body_previously_called).nil?) && @__read_body_previously_called
+        return super
+      end
+      return @body if dest.nil? && block.nil?
+      fail ArgumentError.new('both arg and block given for HTTP method') if dest && block
+      return nil if @body.nil?
+
+      dest ||= ::Net::ReadAdapter.new(block)
+      body_parts = Array(@body)
+      body_parts.each do |chunk|
+        chunk = eval_chunk(chunk)
+        dest << chunk
+      end
+      @body = dest
+    ensure
+      # allow subsequent calls to #read_body to proceed as normal, without our hack...
+      @__read_body_previously_called = true
+    end
+  end
+end
+
+class WebMockHTTPClient
+  def eval_chunk(chunk)
+    chunk if chunk.is_a?(String)
+    chunk.read if chunk.is_a?(IO)
+    chunk.call if chunk.is_a?(Proc)
+    fail HTTPClient::TimeoutError if chunk == ::Timeout::Error
+    fail chunk if chunk.is_a?(Class)
+    chunk
+  end
+
+  def build_httpclient_response(webmock_response, stream = false, req_header = nil, &block)
+    body = stream ? StringIO.new(webmock_response.body) : webmock_response.body
+    response = HTTP::Message.new_response(body, req_header)
+    response.header.init_response(webmock_response.status[0])
+    response.reason = webmock_response.status[1]
+    webmock_response.headers.to_a.each { |name, value| response.header.set(name, value) }
+
+    raise HTTPClient::TimeoutError if webmock_response.should_timeout
+    webmock_response.raise_error_if_any
+
+    body_parts = Array(webmock_response.body)
+    body_parts.each do |chunk|
+      chunk = eval_chunk(chunk)
+      block.call(response, chunk) if block
+    end
+
+    response
+  end
+end
+
+
+def run_integration_tests?
+  ENV['GOOGLE_APPLICATION_CREDENTIALS'] && ENV['GOOGLE_PROJECT_ID']
+end

script/generate

@@ -4,5 +4,5 @@
 
 DIR=$(dirname $( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd ))
 
-cd google-api-client
+cd google-apis-generator
 echo 'a' | bundle exec bin/generate-api gen $DIR/generated --from-discovery --no-preferred-only --names=$DIR/api_names.yaml --names-out=$DIR/api_names_out.yaml

script/synth.rb

@@ -9,7 +9,7 @@ def execute cmd
   abort unless system cmd
 end
 
-Dir.chdir "google-api-client"
+Dir.chdir "google-apis-generator"
 
 execute "bundle install"