Changes for docker package manager (#11217)

Changes for docker package manager metric collection(#11217)

Author: sachin-sandhu

docker/lib/dependabot/docker/file_parser.rb

@@ -8,6 +8,7 @@
 require "dependabot/file_parsers/base"
 require "dependabot/errors"
 require "sorbet-runtime"
+require "dependabot/docker/package_manager"
 
 module Dependabot
   module Docker
@@ -42,6 +43,17 @@ class FileParser < Dependabot::FileParsers::Base
 
       IMAGE_SPEC = %r{^(#{REGISTRY}/)?#{IMAGE}#{TAG}?(?:@sha256:#{DIGEST})?#{NAME}?}x
 
+      sig { returns(Ecosystem) }
+      def ecosystem
+        @ecosystem ||= T.let(
+          Ecosystem.new(
+            name: ECOSYSTEM,
+            package_manager: DockerPackageManager.new
+          ),
+          T.nilable(Ecosystem)
+        )
+      end
+
       # rubocop:disable Metrics/AbcSize
       sig { override.returns(T::Array[Dependabot::Dependency]) }
       def parse

docker/lib/dependabot/docker/package_manager.rb

@@ -0,0 +1,53 @@
+# typed: strong
+# frozen_string_literal: true
+
+require "sorbet-runtime"
+require "dependabot/docker/version"
+require "dependabot/ecosystem"
+require "dependabot/docker/requirement"
+
+module Dependabot
+  module Docker
+    ECOSYSTEM = "docker"
+
+    SUPPORTED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+    DEPRECATED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+    class DockerPackageManager < Dependabot::Ecosystem::VersionManager
+      extend T::Sig
+
+      NAME = "docker"
+
+      # As dockerfile updater is a inhouse custom utility, We use a placeholder
+      # version number for dockerfile updater
+      VERSION = "1.0.0"
+
+      SUPPORTED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+      DEPRECATED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
+
+      sig do
+        void
+      end
+      def initialize
+        super(
+          name: NAME,
+          version: Version.new(VERSION),
+          deprecated_versions: DEPRECATED_VERSIONS,
+          supported_versions: SUPPORTED_VERSIONS
+       )
+      end
+
+      sig { override.returns(T::Boolean) }
+      def deprecated?
+        false
+      end
+
+      sig { override.returns(T::Boolean) }
+      def unsupported?
+        false
+      end
+    end
+  end
+end

docker/spec/dependabot/docker/docker_package_manager_spec.rb

@@ -0,0 +1,33 @@
+# typed: false
+# frozen_string_literal: true
+
+require "dependabot/docker/package_manager"
+require "dependabot/ecosystem"
+require "spec_helper"
+
+RSpec.describe Dependabot::Docker::DockerPackageManager do
+  let(:package_manager) do
+    described_class.new
+  end
+
+  describe "#initialize" do
+    context "when docker package manager is initialised" do
+      it "sets the name and version correctly" do
+        expect(package_manager.name).to eq(Dependabot::Docker::DockerPackageManager::NAME)
+        expect(package_manager.version.to_s).to eq("1.0.0")
+      end
+    end
+
+    describe "#deprecated?" do
+      it "returns always false" do
+        expect(package_manager.deprecated?).to be false
+      end
+    end
+
+    describe "#unsupported?" do
+      it "returns always false" do
+        expect(package_manager.unsupported?).to be false
+      end
+    end
+  end
+end

docker/spec/dependabot/docker/file_parser_spec.rb

@@ -677,6 +677,14 @@
           expect(dependency.name).to eq("ubuntu")
           expect(dependency.version).to eq("artful")
           expect(dependency.requirements).to eq(expected_requirements)
+
+          ecosystem = parser.ecosystem
+
+          expect(ecosystem.name).to eq("docker")
+          expect(ecosystem.package_manager.name).to eq("docker")
+
+          expect(ecosystem.package_manager.deprecated?).to be false
+          expect(ecosystem.package_manager.unsupported?).to be false
         end
       end
     end