Shard JSON API by OS/Arch combination

Library/Homebrew/api.rb

@@ -122,14 +122,15 @@ module Homebrew
       end
     end
 
-    sig { params(json: Hash).returns(Hash) }
-    def self.merge_variations(json)
+    sig { params(json: Hash, bottle_tag: T.nilable(::Utils::Bottles::Tag)).returns(Hash) }
+    def self.merge_variations(json, bottle_tag: nil)
       return json unless json.key?("variations")
 
-      bottle_tag = ::Utils::Bottles::Tag.new(system: Homebrew::SimulateSystem.current_os,
+      bottle_tag ||= ::Utils::Bottles::Tag.new(system: Homebrew::SimulateSystem.current_os,
                                                arch:   Homebrew::SimulateSystem.current_arch)
 
-      if (variation = json.dig("variations", bottle_tag.to_s).presence)
+      if (variation = json.dig("variations", bottle_tag.to_s).presence) ||
+         (variation = json.dig("variations", bottle_tag.to_sym).presence)
         json = json.merge(variation)
       end
 

Library/Homebrew/dev-cmd/generate-cask-api.rb

@@ -33,7 +33,7 @@ module Homebrew
         raise TapUnavailableError, tap.name unless tap.installed?
 
         unless args.dry_run?
-          directories = ["_data/cask", "api/cask", "api/cask-source", "cask", "api/internal/v3"].freeze
+          directories = ["_data/cask", "api/cask", "api/cask-source", "cask", "api/internal"].freeze
           FileUtils.rm_rf directories
           FileUtils.mkdir_p directories
         end
@@ -44,12 +44,14 @@ module Homebrew
 
           Cask::Cask.generating_hash!
 
+          all_casks = {}
           latest_macos = MacOSVersion.new((HOMEBREW_MACOS_NEWEST_UNSUPPORTED.to_i - 1).to_s).to_sym
           Homebrew::SimulateSystem.with(os: latest_macos, arch: :arm) do
             tap.cask_files.each do |path|
               cask = Cask::CaskLoader.load(path)
               name = cask.token
-              json = JSON.pretty_generate(cask.to_hash_with_variations)
+              all_casks[name] = cask.to_hash_with_variations
+              json = JSON.pretty_generate(all_casks[name])
               cask_source = path.read
               html_template_name = html_template(name)
 
@@ -67,6 +69,19 @@ module Homebrew
 
           canonical_json = JSON.pretty_generate(tap.cask_renames)
           File.write("_data/cask_canonical.json", "#{canonical_json}\n") unless args.dry_run?
+
+          OnSystem::ALL_OS_ARCH_COMBINATIONS.filter_map do |os, arch|
+            bottle_tag = Utils::Bottles::Tag.new(system: os, arch:)
+            next unless bottle_tag.valid_combination?
+
+            variation_casks = all_casks.transform_values do |cask|
+              Homebrew::API.merge_variations(cask, bottle_tag:)
+            end
+
+            unless args.dry_run?
+              File.write("api/internal/cask.#{bottle_tag}.json", JSON.pretty_generate(variation_casks))
+            end
+          end
         end
       end
 

Library/Homebrew/dev-cmd/generate-formula-api.rb

@@ -32,7 +32,7 @@ module Homebrew
         raise TapUnavailableError, tap.name unless tap.installed?
 
         unless args.dry_run?
-          directories = ["_data/formula", "api/formula", "formula", "api/internal/v3"]
+          directories = ["_data/formula", "api/formula", "formula", "api/internal"]
           FileUtils.rm_rf directories + ["_data/formula_canonical.json"]
           FileUtils.mkdir_p directories
         end
@@ -44,12 +44,14 @@ module Homebrew
           Formulary.enable_factory_cache!
           Formula.generating_hash!
 
+          all_formulae = {}
           latest_macos = MacOSVersion.new((HOMEBREW_MACOS_NEWEST_UNSUPPORTED.to_i - 1).to_s).to_sym
           Homebrew::SimulateSystem.with(os: latest_macos, arch: :arm) do
             tap.formula_names.each do |name|
               formula = Formulary.factory(name)
               name = formula.name
-              json = JSON.pretty_generate(formula.to_hash_with_variations)
+              all_formulae[name] = formula.to_hash_with_variations
+              json = JSON.pretty_generate(all_formulae[name])
               html_template_name = html_template(name)
 
               unless args.dry_run?
@@ -65,6 +67,19 @@ module Homebrew
 
           canonical_json = JSON.pretty_generate(tap.formula_renames.merge(tap.alias_table))
           File.write("_data/formula_canonical.json", "#{canonical_json}\n") unless args.dry_run?
+
+          OnSystem::ALL_OS_ARCH_COMBINATIONS.filter_map do |os, arch|
+            bottle_tag = Utils::Bottles::Tag.new(system: os, arch:)
+            next unless bottle_tag.valid_combination?
+
+            variation_formulae = all_formulae.transform_values do |formula|
+              Homebrew::API.merge_variations(formula, bottle_tag:)
+            end
+
+            unless args.dry_run?
+              File.write("api/internal/formula.#{bottle_tag}.json", JSON.pretty_generate(variation_formulae))
+            end
+          end
         end
       end
 

Library/Homebrew/test/api_spec.rb

@@ -90,4 +90,84 @@ RSpec.describe Homebrew::API do
       end
     end
   end
+
+  describe "::merge_variations" do
+    let(:arm64_sequoia_tag) { Utils::Bottles::Tag.new(system: :sequoia, arch: :arm) }
+    let(:sonoma_tag) { Utils::Bottles::Tag.new(system: :sonoma, arch: :intel) }
+    let(:x86_64_linux_tag) { Utils::Bottles::Tag.new(system: :linux, arch: :intel) }
+
+    let(:json) do
+      {
+        "name"       => "foo",
+        "foo"        => "bar",
+        "baz"        => ["test1", "test2"],
+        "variations" => {
+          "arm64_sequoia" => { "foo" => "new" },
+          :sonoma         => { "baz" => ["new1", "new2", "new3"] },
+        },
+      }
+    end
+
+    let(:arm64_sequoia_result) do
+      {
+        "name" => "foo",
+        "foo"  => "new",
+        "baz"  => ["test1", "test2"],
+      }
+    end
+
+    let(:sonoma_result) do
+      {
+        "name" => "foo",
+        "foo"  => "bar",
+        "baz"  => ["new1", "new2", "new3"],
+      }
+    end
+
+    it "returns the original JSON if no variations are found" do
+      result = described_class.merge_variations(arm64_sequoia_result, bottle_tag: arm64_sequoia_tag)
+      expect(result).to eq arm64_sequoia_result
+    end
+
+    it "returns the original JSON if no variations are found for the current system" do
+      result = described_class.merge_variations(arm64_sequoia_result)
+      expect(result).to eq arm64_sequoia_result
+    end
+
+    it "returns the original JSON without the variations if no matching variation is found" do
+      result = described_class.merge_variations(json, bottle_tag: x86_64_linux_tag)
+      expect(result).to eq json.except("variations")
+    end
+
+    it "returns the original JSON without the variations if no matching variation is found for the current system" do
+      Homebrew::SimulateSystem.with(os: :linux, arch: :intel) do
+        result = described_class.merge_variations(json)
+        expect(result).to eq json.except("variations")
+      end
+    end
+
+    it "returns the JSON with the matching variation applied from a string key" do
+      result = described_class.merge_variations(json, bottle_tag: arm64_sequoia_tag)
+      expect(result).to eq arm64_sequoia_result
+    end
+
+    it "returns the JSON with the matching variation applied from a string key for the current system" do
+      Homebrew::SimulateSystem.with(os: :sequoia, arch: :arm) do
+        result = described_class.merge_variations(json)
+        expect(result).to eq arm64_sequoia_result
+      end
+    end
+
+    it "returns the JSON with the matching variation applied from a symbol key" do
+      result = described_class.merge_variations(json, bottle_tag: sonoma_tag)
+      expect(result).to eq sonoma_result
+    end
+
+    it "returns the JSON with the matching variation applied from a symbol key for the current system" do
+      Homebrew::SimulateSystem.with(os: :sonoma, arch: :intel) do
+        result = described_class.merge_variations(json)
+        expect(result).to eq sonoma_result
+      end
+    end
+  end
 end