Use packs to determine packaged paths and for testing

Gemfile.lock

@@ -1,10 +1,11 @@
 PATH
   remote: .
   specs:
-    pack_stats (0.0.2)
+    pack_stats (0.0.3)
       code_ownership
       code_teams
       dogapi
+      packs
       parse_packwerk
       rubocop-packs
       sorbet-runtime
@@ -18,9 +19,9 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
     ast (2.4.2)
-    code_ownership (1.29.1)
+    code_ownership (1.29.2)
       code_teams (~> 1.0)
-      parse_packwerk
+      packs
       sorbet-runtime
     code_teams (1.0.0)
       sorbet-runtime
@@ -36,8 +37,10 @@ GEM
     minitest (5.16.3)
     multi_json (1.15.0)
     netrc (0.11.0)
+    packs (0.0.5)
+      sorbet-runtime
     parallel (1.22.1)
-    parse_packwerk (0.16.0)
+    parse_packwerk (0.18.0)
       sorbet-runtime
     parser (3.1.1.0)
       ast (~> 2.4.1)
@@ -76,10 +79,11 @@ GEM
       rubocop-ast (>= 1.19.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.24.0)
+    rubocop-ast (1.24.1)
       parser (>= 3.1.1.0)
-    rubocop-packs (0.0.30)
+    rubocop-packs (0.0.33)
       activesupport
+      packs
       parse_packwerk
       rubocop
       rubocop-sorbet

README.md

@@ -38,13 +38,6 @@ PackStats.report_to_datadog!(
   # Example: [Pathname.new("./gems")]
   #
   componentized_source_code_locations: componentized_source_code_locations,
-  #
-  # A file is determined to be packaged if it exists in any of these directories.
-  # This is an array of `Pathname`. `Pathname` can be relative or absolute paths.
-  #
-  # Example: [Pathname.new("./packs")]
-  #
-  packaged_source_code_locations: packaged_source_code_locations,
 )
 ```
 

lib/pack_stats.rb

@@ -7,6 +7,7 @@
 require 'code_teams'
 require 'code_ownership'
 require 'pathname'
+require 'packs'
 require 'pack_stats/private'
 require 'pack_stats/private/source_code_file'
 require 'pack_stats/private/datadog_reporter'
@@ -27,23 +28,17 @@ module PackStats
     ].freeze, T::Array[Pathname]
   )
 
-  DEFAULT_PACKAGED_SOURCE_CODE_LOCATIONS = T.let(
-    [
-      Pathname.new('packs'),
-      Pathname.new('packages'),
-    ].freeze, T::Array[Pathname]
-  )
-
   sig do
     params(
       datadog_client: Dogapi::Client,
       app_name: String,
       source_code_pathnames: T::Array[Pathname],
       componentized_source_code_locations: T::Array[Pathname],
-      packaged_source_code_locations: T::Array[Pathname],
       report_time: Time,
       verbose: T::Boolean,
       # See note on get_metrics
+      packaged_source_code_locations: T.nilable(T::Array[Pathname]),
+      # See note on get_metrics
       use_gusto_legacy_names: T::Boolean
     ).void
   end
@@ -52,16 +47,15 @@ def self.report_to_datadog!(
     app_name:,
     source_code_pathnames:,
     componentized_source_code_locations: DEFAULT_COMPONENTIZED_SOURCE_CODE_LOCATIONS,
-    packaged_source_code_locations: DEFAULT_PACKAGED_SOURCE_CODE_LOCATIONS,
     report_time: Time.now, # rubocop:disable Rails/TimeZone
     verbose: false,
+    packaged_source_code_locations: [],
     use_gusto_legacy_names: false
   )
 
     all_metrics = self.get_metrics(
       source_code_pathnames: source_code_pathnames,
       componentized_source_code_locations: componentized_source_code_locations,
-      packaged_source_code_locations: packaged_source_code_locations,
       app_name: app_name,
       use_gusto_legacy_names: use_gusto_legacy_names,
     )
@@ -88,8 +82,9 @@ def self.report_to_datadog!(
     params(
       source_code_pathnames: T::Array[Pathname],
       componentized_source_code_locations: T::Array[Pathname],
-      packaged_source_code_locations: T::Array[Pathname],
       app_name: String,
+      # This field is deprecated
+      packaged_source_code_locations: T.nilable(T::Array[Pathname]),
       # It is not recommended to set this to true.
       # Gusto uses this to preserve historical trends in Dashboards as the names of
       # things changed, but new dashboards can use names that better match current tooling conventions.
@@ -100,15 +95,14 @@ def self.report_to_datadog!(
   def self.get_metrics(
     source_code_pathnames:,
     componentized_source_code_locations:,
-    packaged_source_code_locations:,
     app_name:,
+    packaged_source_code_locations: [],
     use_gusto_legacy_names: false
   )
     all_metrics = Private::DatadogReporter.get_metrics(
       source_code_files: source_code_files(
         source_code_pathnames: source_code_pathnames,
         componentized_source_code_locations: componentized_source_code_locations,
-        packaged_source_code_locations: packaged_source_code_locations
       ),
       app_name: app_name
     )
@@ -124,18 +118,21 @@ def self.get_metrics(
     params(
       source_code_pathnames: T::Array[Pathname],
       componentized_source_code_locations: T::Array[Pathname],
-      packaged_source_code_locations: T::Array[Pathname]
     ).returns(T::Array[Private::SourceCodeFile])
   end
   def self.source_code_files(
     source_code_pathnames:,
-    componentized_source_code_locations:,
-    packaged_source_code_locations:
+    componentized_source_code_locations:
   )
 
     # Sorbet has the wrong signatures for `Pathname#find`, whoops!
     componentized_file_set = Set.new(componentized_source_code_locations.select(&:exist?).flat_map { |pathname| T.unsafe(pathname).find.to_a })
-    packaged_file_set = Set.new(packaged_source_code_locations.select(&:exist?).flat_map { |pathname| T.unsafe(pathname).find.to_a })
+
+    packaged_file_set = Packs.all.flat_map do |pack|
+      pack.relative_path.find.to_a
+    end
+
+    packaged_file_set = Set.new(packaged_file_set)
 
     source_code_pathnames.map do |pathname|
       componentized_file = componentized_file_set.include?(pathname)

lib/pack_stats/private.rb

@@ -48,6 +48,13 @@ def self.convert_metrics_to_legacy(metrics)
         new_metric
       end
     end
+
+    sig { params(package: ParsePackwerk::Package).returns(T.nilable(String) )}
+    def self.package_owner(package)
+      pack = Packs.find(package.name)
+      return nil if pack.nil?
+      CodeOwnership.for_package(pack)&.name
+    end
   end
 
   private_constant :Private

lib/pack_stats/private/metrics.rb

@@ -17,7 +17,7 @@ def self.tags_for_package(package, app_name)
         [
           Tag.new(key: 'package', value: humanized_package_name(package.name)),
           Tag.new(key: 'app', value: app_name),
-          *Metrics.tags_for_team(CodeOwnership.for_package(package)&.name),
+          *Metrics.tags_for_team(Private.package_owner(package)),
         ]
       end
 

lib/pack_stats/private/metrics/packages.rb

@@ -63,7 +63,7 @@ def self.get_package_metrics(packages, app_name)
                 raise StandardError, "Could not find matching package #{to_package_name}"
               end
 
-              tags = package_tags + [Tag.for('to_package', Metrics.humanized_package_name(to_package_name))] + Metrics.tags_for_to_team(CodeOwnership.for_package(to_package)&.name)
+              tags = package_tags + [Tag.for('to_package', Metrics.humanized_package_name(to_package_name))] + Metrics.tags_for_to_team(Private.package_owner(to_package))
               all_metrics << GaugeMetric.for('by_package.outbound_dependency_violations.per_package.count', Metrics.file_count(violations.select(&:dependency?)), tags)
               all_metrics << GaugeMetric.for('by_package.outbound_privacy_violations.per_package.count', Metrics.file_count(violations.select(&:privacy?)), tags)
             end
@@ -89,7 +89,8 @@ def self.get_package_metrics(packages, app_name)
                 raise StandardError, "Could not find matching package #{explicit_dependency}"
               end
 
-              tags = package_tags + [Tag.for('to_package', Metrics.humanized_package_name(explicit_dependency))] + Metrics.tags_for_to_team(CodeOwnership.for_package(to_package)&.name)
+              owner = Private.package_owner(to_package)
+              tags = package_tags + [Tag.for('to_package', Metrics.humanized_package_name(explicit_dependency))] + Metrics.tags_for_to_team(owner)
               all_metrics << GaugeMetric.for('by_package.outbound_explicit_dependencies.per_package.count', 1, tags)
             end
 

lib/pack_stats/private/metrics/packages_by_team.rb

@@ -17,7 +17,8 @@ def self.get_package_metrics_by_team(all_packages, app_name)
           all_metrics = T.let([], T::Array[GaugeMetric])
           app_level_tag = Tag.for('app', app_name)
 
-          all_packages.group_by { |package| CodeOwnership.for_package(package)&.name }.each do |team_name, packages_by_team|
+
+          all_packages.group_by { |package| Private.package_owner(package) }.each do |team_name, packages_by_team|
             # We look at `all_packages` because we care about ALL inbound violations across all teams
             inbound_violations_by_package = all_packages.flat_map(&:violations).group_by(&:to_package_name)
 
@@ -51,7 +52,7 @@ def self.get_package_metrics_by_team(all_packages, app_name)
                 raise StandardError, "Could not find matching package #{violation.to_package_name}"
               end
 
-              CodeOwnership.for_package(to_package)&.name
+              Private.package_owner(to_package)
             end
 
             grouped_outbound_violations.each do |to_team_name, violations|

pack_stats.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = 'pack_stats'
-  spec.version       = '0.0.2'
+  spec.version       = '0.0.3'
   spec.authors       = ['Gusto Engineers']
   spec.email         = ['dev@gusto.com']
 
@@ -29,6 +29,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'code_teams'
   spec.add_dependency 'code_ownership'
   spec.add_dependency 'dogapi'
+  spec.add_dependency 'packs'
   spec.add_dependency 'parse_packwerk'
   spec.add_dependency 'sorbet-runtime'
   spec.add_dependency 'rubocop-packs'