Add support for gradle ecosystem metrics collection

gradle/lib/dependabot/gradle/file_parser.rb

@@ -9,6 +9,8 @@
 require "dependabot/file_parsers/base"
 require "dependabot/shared_helpers"
 require "dependabot/gradle/version"
+require "dependabot/gradle/language"
+require "dependabot/gradle/package_manager"
 
 # The best Gradle documentation is at:
 # - https://docs.gradle.org/current/dsl/org.gradle.api.artifacts.dsl.
@@ -71,8 +73,35 @@ def self.find_includes(buildfile, dependency_files)
                   .filter_map { |f| dependency_files.find { |bf| bf.name == f } }
       end
 
+      sig { returns(Ecosystem) }
+      def ecosystem
+        @ecosystem ||= T.let(
+          Ecosystem.new(
+            name: ECOSYSTEM,
+            package_manager: package_manager,
+            language: language
+          ),
+          T.nilable(Ecosystem)
+        )
+      end
+
       private
 
+      sig { returns(Ecosystem::VersionManager) }
+      def package_manager
+        @package_manager ||= T.let(
+          PackageManager.new("NOT-AVAILABLE"),
+          T.nilable(Dependabot::Gradle::PackageManager)
+        )
+      end
+
+      sig { returns(T.nilable(Ecosystem::VersionManager)) }
+      def language
+        @language ||= T.let(begin
+          Language.new("NOT-AVAILABLE")
+        end, T.nilable(Dependabot::Gradle::Language))
+      end
+
       def version_catalog_dependencies(toml_file)
         dependency_set = DependencySet.new
         parsed_toml_file = parsed_toml_file(toml_file)

gradle/lib/dependabot/gradle/language.rb

@@ -0,0 +1,24 @@
+# typed: strong
+# frozen_string_literal: true
+
+require "sorbet-runtime"
+require "dependabot/ecosystem"
+require "dependabot/gradle/version"
+
+module Dependabot
+  module Gradle
+    LANGUAGE = "jvm_languages"
+
+    class Language < Dependabot::Ecosystem::VersionManager
+      extend T::Sig
+
+      sig { params(raw_version: String).void }
+      def initialize(raw_version)
+        super(
+          LANGUAGE,
+          Version.new(raw_version)
+        )
+      end
+    end
+  end
+end

gradle/lib/dependabot/gradle/package_manager.rb

@@ -0,0 +1,41 @@
+# typed: strong
+# frozen_string_literal: true
+
+require "sorbet-runtime"
+require "dependabot/ecosystem"
+require "dependabot/gradle/version"
+
+module Dependabot
+  module Gradle
+    ECOSYSTEM = "gradle"
+    PACKAGE_MANAGER = "gradle"
+    SUPPORTED_GRADLE_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+    # When a version is going to be unsupported, it will be added here
+    DEPRECATED_GRADLE_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+    class PackageManager < Dependabot::Ecosystem::VersionManager
+      extend T::Sig
+
+      sig { params(raw_version: String).void }
+      def initialize(raw_version)
+        super(
+          PACKAGE_MANAGER,
+          Version.new(raw_version),
+          DEPRECATED_GRADLE_VERSIONS,
+          SUPPORTED_GRADLE_VERSIONS
+        )
+      end
+
+      sig { returns(T::Boolean) }
+      def deprecated?
+        false
+      end
+
+      sig { returns(T::Boolean) }
+      def unsupported?
+        false
+      end
+    end
+  end
+end

gradle/spec/dependabot/gradle/file_parser_spec.rb

@@ -1068,4 +1068,32 @@
       its(:length) { is_expected.to eq(2) }
     end
   end
+
+  describe "#ecosystem" do
+    subject(:ecosystem) { parser.ecosystem }
+
+    it "has the correct name" do
+      expect(ecosystem.name).to eq "gradle"
+    end
+
+    describe "#package_manager" do
+      subject(:package_manager) { ecosystem.package_manager }
+
+      it "returns the correct package manager" do
+        expect(package_manager.name).to eq "gradle"
+        expect(package_manager.requirement).to be_nil
+        expect(package_manager.version.to_s).to eq "NOT-AVAILABLE"
+      end
+    end
+
+    describe "#language" do
+      subject(:language) { ecosystem.language }
+
+      it "returns the correct language" do
+        expect(language.name).to eq "jvm_languages"
+        expect(language.requirement).to be_nil
+        expect(language.version.to_s).to eq "NOT-AVAILABLE"
+      end
+    end
+  end
 end

gradle/spec/dependabot/gradle/language_spec.rb

@@ -0,0 +1,35 @@
+# typed: false
+# frozen_string_literal: true
+
+require "dependabot/gradle/language"
+require "dependabot/ecosystem"
+require "spec_helper"
+
+RSpec.describe Dependabot::Gradle::Language do
+  let(:language) { described_class.new(version) }
+  let(:version) { "3.0.0" }
+
+  describe "#version" do
+    it "returns the version" do
+      expect(language.version).to eq(Dependabot::Gradle::Version.new(version))
+    end
+  end
+
+  describe "#name" do
+    it "returns the name" do
+      expect(language.name).to eq(Dependabot::Gradle::LANGUAGE)
+    end
+  end
+
+  describe "#unsupported?" do
+    it "returns false by default" do
+      expect(language.unsupported?).to be false
+    end
+  end
+
+  describe "#deprecated?" do
+    it "returns false by default" do
+      expect(language.deprecated?).to be false
+    end
+  end
+end

gradle/spec/dependabot/gradle/package_manager_spec.rb

@@ -0,0 +1,36 @@
+# typed: false
+# frozen_string_literal: true
+
+require "dependabot/gradle/package_manager"
+require "dependabot/ecosystem"
+require "spec_helper"
+
+RSpec.describe Dependabot::Gradle::PackageManager do
+  subject(:package_manager) { described_class.new(version) }
+
+  let(:version) { "3.9.5" }
+
+  describe "#version" do
+    it "returns the version" do
+      expect(package_manager.version).to eq(Dependabot::Gradle::Version.new(version))
+    end
+  end
+
+  describe "#name" do
+    it "returns the name" do
+      expect(package_manager.name).to eq(Dependabot::Gradle::PACKAGE_MANAGER)
+    end
+  end
+
+  describe "#deprecated_versions" do
+    it "returns deprecated versions" do
+      expect(package_manager.deprecated_versions).to eq(Dependabot::Gradle::DEPRECATED_GRADLE_VERSIONS)
+    end
+  end
+
+  describe "#supported_versions" do
+    it "returns supported versions" do
+      expect(package_manager.supported_versions).to eq(Dependabot::Gradle::SUPPORTED_GRADLE_VERSIONS)
+    end
+  end
+end