switch to use gem declarations instead of hardcoded mappings

.github/scripts/find_gem_version_bounds.rb

@@ -88,25 +88,9 @@ def get_integration_names(directory = 'lib/datadog/tracing/contrib/')
   Datadog::Tracing::Contrib::REGISTRY.map{ |i| i.name.to_s }
 end
 
-# TODO: The gem information should reside in the integration declaration instead of here.
-
-mapping = {
-  "action_mailer" => "actionmailer",
-  "opensearch" => "opensearch-ruby",
-  "concurrent_ruby" => "concurrent-ruby",
-  "action_view" => "actionview",
-  "action_cable" => "actioncable",
-  "active_record" => "activerecord",
-  "mongodb" => "mongo",
-  "rest_client" => "rest-client",
-  "active_support" => "activesupport",
-  "action_pack" => "actionpack",
-  "active_job" => "activejob",
-  "httprb" => "http",
-  "kafka" => "ruby-kafka",
-  "presto" => "presto-client",
-  "aws" => "aws-sdk-core"
-}
+SPECIAL_CASES = {
+  "opensearch" => "OpenSearch" # special case because opensearch = OpenSearch not Opensearch
+}.freeze 
 
 excluded = ["configuration", "propagation", "utils"]
 min_gems_ruby, min_gems_jruby, max_gems_ruby, max_gems_jruby = parse_gemfiles("gemfiles/")
@@ -115,19 +99,32 @@ def get_integration_names(directory = 'lib/datadog/tracing/contrib/')
 integration_json_mapping = {}
 
 integrations.each do |integration|
-  if excluded.include?(integration)
-    next
+  next if excluded.include?(integration)
+
+  begin
+    mod_name = SPECIAL_CASES[integration] || integration.split('_').map(&:capitalize).join
+    module_name = "Datadog::Tracing::Contrib::#{mod_name}"
+    integration_module = Object.const_get(module_name)::Integration
+    integration_name = integration_module.respond_to?(:gem_name) ? integration_module.gem_name : integration
+  rescue NameError
+    puts "Integration module not found for #{integration}, falling back to integration name."
+    integration_name = integration
+  rescue NoMethodError
+    puts "gem_name method missing for #{integration}, falling back to integration name."
+    integration_name = integration
   end
-  integration_name = mapping[integration] || integration
 
   min_version_jruby = min_gems_jruby[integration_name]
   min_version_ruby = min_gems_ruby[integration_name]
   max_version_jruby = max_gems_jruby[integration_name]
   max_version_ruby = max_gems_ruby[integration_name]
 
-  # mapping jruby, ruby
-  integration_json_mapping[integration] = [min_version_ruby, max_version_ruby, min_version_jruby, max_version_jruby]
-  integration_json_mapping.replace(integration_json_mapping.sort.to_h)
+  integration_json_mapping[integration] = [
+    min_version_ruby, max_version_ruby,
+    min_version_jruby, max_version_jruby
+  ]
 end
 
-File.write("gem_output.json", JSON.pretty_generate(integration_json_mapping))
+# Sort and output the mapping
+integration_json_mapping = integration_json_mapping.sort.to_h
+File.write("gem_output.json", JSON.pretty_generate(integration_json_mapping))

lib/datadog/tracing/contrib/action_cable/integration.rb

@@ -17,7 +17,9 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :action_cable, auto_patch: false
-
+          def self.gem_name
+            'actioncable'
+          end
           def self.version
             Gem.loaded_specs['actioncable'] && Gem.loaded_specs['actioncable'].version
           end

lib/datadog/tracing/contrib/action_mailer/integration.rb

@@ -17,6 +17,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :action_mailer, auto_patch: false
+
+          def self.gem_name
+            'actionmailer'
+          end
 
           def self.version
             Gem.loaded_specs['actionmailer'] && Gem.loaded_specs['actionmailer'].version

lib/datadog/tracing/contrib/action_pack/integration.rb

@@ -18,7 +18,9 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :action_pack, auto_patch: false
-
+          def self.gem_name
+            'actionpack'
+          end
           def self.version
             Gem.loaded_specs['actionpack'] && Gem.loaded_specs['actionpack'].version
           end

lib/datadog/tracing/contrib/action_view/integration.rb

@@ -18,7 +18,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :action_view, auto_patch: false
-
+          def self.gem_name
+            'actionview'
+          end
+
           def self.version
             # ActionView is its own gem in Rails 4.1+
             if Gem.loaded_specs['actionview']

lib/datadog/tracing/contrib/active_job/integration.rb

@@ -17,7 +17,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :active_job, auto_patch: false
-
+          def self.gem_name
+            'activejob'
+          end
+
           def self.version
             Gem.loaded_specs['activejob'] && Gem.loaded_specs['activejob'].version
           end

lib/datadog/tracing/contrib/active_record/integration.rb

@@ -21,7 +21,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :active_record, auto_patch: false
-
+          def self.gem_name
+            'activerecord'
+          end
+
           def self.version
             Gem.loaded_specs['activerecord'] && Gem.loaded_specs['activerecord'].version
           end

lib/datadog/tracing/contrib/active_support/integration.rb

@@ -19,7 +19,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :active_support, auto_patch: false
-
+          def self.gem_name
+            'activesupport'
+          end
+
           def self.version
             Gem.loaded_specs['activesupport'] && Gem.loaded_specs['activesupport'].version
           end

lib/datadog/tracing/contrib/aws/integration.rb

@@ -16,7 +16,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :aws, auto_patch: true
-
+          def self.gem_name
+            'aws-sdk-core'
+          end
+
           def self.version
             if Gem.loaded_specs['aws-sdk']
               Gem.loaded_specs['aws-sdk'].version

lib/datadog/tracing/contrib/concurrent_ruby/integration.rb

@@ -16,7 +16,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :concurrent_ruby
-
+          def self.gem_name
+            'concurrent-ruby'
+          end
+
           def self.version
             Gem.loaded_specs['concurrent-ruby'] && Gem.loaded_specs['concurrent-ruby'].version
           end

lib/datadog/tracing/contrib/httprb/integration.rb

@@ -17,7 +17,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :httprb
-
+          def self.gem_name
+            'http'
+          end
+
           def self.version
             Gem.loaded_specs['http'] && Gem.loaded_specs['http'].version
           end

lib/datadog/tracing/contrib/kafka/integration.rb

@@ -16,7 +16,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :kafka, auto_patch: false
-
+          def self.gem_name
+            'ruby-kafka'
+          end
+
           def self.version
             Gem.loaded_specs['ruby-kafka'] && Gem.loaded_specs['ruby-kafka'].version
           end

lib/datadog/tracing/contrib/mongodb/integration.rb

@@ -17,7 +17,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :mongo, auto_patch: true
-
+          def self.gem_name
+            'mongo'
+          end
+
           def self.version
             Gem.loaded_specs['mongo'] && Gem.loaded_specs['mongo'].version
           end

lib/datadog/tracing/contrib/opensearch/integration.rb

@@ -16,6 +16,9 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :opensearch, auto_patch: true
+          def self.gem_name
+            'opensearch-ruby'
+          end
 
           def self.version
             Gem.loaded_specs['opensearch-ruby'] \

lib/datadog/tracing/contrib/presto/integration.rb

@@ -16,7 +16,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :presto
-
+          def self.gem_name
+            'presto-client'
+          end
+
           def self.version
             Gem.loaded_specs['presto-client'] && Gem.loaded_specs['presto-client'].version
           end

lib/datadog/tracing/contrib/rest_client/integration.rb

@@ -16,7 +16,10 @@ class Integration
 
           # @public_api Changing the integration name or integration options can cause breaking changes
           register_as :rest_client
-
+          def self.gem_name
+            'rest-client'
+          end
+
           def self.version
             Gem.loaded_specs['rest-client'] && Gem.loaded_specs['rest-client'].version
           end