Increase type checking coverage

Steepfile

@@ -128,16 +128,12 @@ target :datadog do
   ignore 'lib/datadog/tracing/sampling/rule.rb'
   ignore 'lib/datadog/tracing/sampling/rule_sampler.rb'
   ignore 'lib/datadog/tracing/sampling/span/rule.rb'
-  ignore 'lib/datadog/tracing/span.rb'
-  ignore 'lib/datadog/tracing/span_operation.rb'
   ignore 'lib/datadog/tracing/sync_writer.rb'
   ignore 'lib/datadog/tracing/trace_operation.rb'
   ignore 'lib/datadog/tracing/tracer.rb'
   ignore 'lib/datadog/tracing/transport/http.rb'
   ignore 'lib/datadog/tracing/transport/http/api.rb'
-  ignore 'lib/datadog/tracing/transport/http/builder.rb'
   ignore 'lib/datadog/tracing/transport/http/client.rb'
-  ignore 'lib/datadog/tracing/transport/http/statistics.rb'
   ignore 'lib/datadog/tracing/transport/http/traces.rb'
   ignore 'lib/datadog/tracing/transport/io/client.rb'
   ignore 'lib/datadog/tracing/transport/io/traces.rb'
@@ -162,30 +158,13 @@ target :datadog do
   library 'digest'
   library 'zlib'
   library 'time'
+  library 'pp'
 
+  # Load all dependency signatures from the `vendor/rbs` directory
   repo_path 'vendor/rbs'
-  library 'cucumber'
-  library 'jruby'
-  library 'gem'
-  library 'rails'
-  library 'spring'
-  library 'sinatra'
-  library 'google-protobuf'
-  library 'protobuf-cucumber'
-  library 'minitest'
-  library 'mysql2'
-  library 'mysql2-aurora'
-  library 'concurrent-ruby'
-  library 'faraday'
-  library 'seahorse'
-  library 'excon'
-  library 'grpc'
-  library 'delayed_job'
-  library 'opentelemetry-api'
-  library 'passenger'
-  library 'webmock'
-  library 'graphql'
-  library 'datadog-ci'
+  Dir.children('vendor/rbs').each do |vendor_gem|
+    library vendor_gem
+  end
 
   # ffi version 1.17 was shipped with invalid rbs types:
   # https://github.com/ffi/ffi/issues/1107

lib/datadog/tracing/span.rb

@@ -112,7 +112,10 @@ def stopped?
 
       def duration
         return @duration if @duration
-        return @end_time - @start_time if @start_time && @end_time
+
+        start_time = @start_time
+        end_time = @end_time
+        end_time - start_time if start_time && end_time
       end
 
       def set_error(e)
@@ -135,6 +138,8 @@ def to_s
       # TODO: Change this to reflect attributes when serialization
       # isn't handled by this method.
       def to_hash
+        @meta['events'] = @events.map(&:to_hash).to_json unless @events.empty?
+
         h = {
           error: @status,
           meta: @meta,
@@ -154,8 +159,6 @@ def to_hash
           h[:duration] = duration_nano
         end
 
-        h[:meta]['events'] = @events.map(&:to_hash).to_json unless @events.empty?
-
         h
       end
 
@@ -196,12 +199,17 @@ def pretty_print(q)
       # Used for serialization
       # @return [Integer] in nanoseconds since Epoch
       def start_time_nano
-        @start_time.to_i * 1000000000 + @start_time.nsec
+        return unless (start_time = @start_time)
+
+        start_time.to_i * 1000000000 + start_time.nsec
       end
 
       # Used for serialization
       # @return [Integer] in nanoseconds since Epoch
       def duration_nano
+        duration = self.duration
+        return unless duration
+
         (duration * 1e9).to_i
       end
 

lib/datadog/tracing/span_operation.rb

@@ -199,6 +199,9 @@ def start(start_time = nil)
       end
 
       # Mark the span stopped at the current time
+      #
+      # steep:ignore:start
+      # Steep issue fixed in https://github.com/soutaro/steep/pull/1467
       def stop(stop_time = nil)
         # A span should not be stopped twice. Note that this is not thread-safe,
         # stop is called from multiple threads, a given span might be stopped
@@ -221,6 +224,7 @@ def stop(stop_time = nil)
 
         self
       end
+      # steep:ignore:end
 
       # Return whether the duration is started or not
       def started?

sig/datadog/core/configuration.rbs

@@ -1,6 +1,8 @@
 module Datadog
   module Core
     module Configuration
+      def health_metrics: -> Diagnostics::Health::Metrics
+
       def tracer: () -> Datadog::Tracing::Tracer
 
       def logger: () -> Datadog::Core::Logger

sig/datadog/core/diagnostics/health.rbs

@@ -3,7 +3,7 @@ module Datadog
     module Diagnostics
       module Health
         class Metrics < Core::Metrics::Client
-          extend Tracing::Diagnostics::Health::Metrics
+          include Tracing::Diagnostics::Health::Metrics
         end
       end
     end

sig/datadog/tracing.rbs

@@ -4,5 +4,7 @@ module Datadog
 
     def self.active_trace: -> TraceSegment?
     def self.active_span: -> SpanOperation?
+
+    type on_error = ^(SpanOperation span_op, Exception error) -> void
   end
 end

sig/datadog/tracing/contrib/resque/resque_job.rbs

@@ -18,7 +18,7 @@ module Datadog
 
           def forked?: () -> untyped
 
-          def span_options: () -> { service: untyped, on_error: untyped }
+          def span_options: () -> { service: untyped, on_error: on_error }
 
           def datadog_configuration: () -> untyped
         end

sig/datadog/tracing/diagnostics/health.rbs

@@ -3,7 +3,25 @@ module Datadog
     module Diagnostics
       module Health
         module Metrics
-          def self.extended: (untyped base) -> untyped
+          def api_errors: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def api_requests: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def api_responses: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def error_context_overflow: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def error_instrumentation_patch: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def error_span_finish: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def error_unfinished_spans: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def instrumentation_patched: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_accepted: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_accepted_lengths: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_dropped: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def traces_filtered: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def transport_trace_too_large: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def transport_chunked: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def writer_cpu_time: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_length: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_max_length: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def queue_spans: (untyped ?value) ?{ (untyped) -> untyped } -> void
+          def sampling_service_cache_length: (untyped ?value) ?{ (untyped) -> untyped } -> void
         end
       end
     end

sig/datadog/tracing/metadata.rbs

@@ -1,7 +1,9 @@
 module Datadog
   module Tracing
     module Metadata
-      def self.included: (untyped base) -> untyped
+      include Metadata::Tagging
+      include Metadata::Errors
+      prepend Metadata::Analytics
     end
   end
 end

sig/datadog/tracing/span.rbs

@@ -1,10 +1,59 @@
 module Datadog
   module Tracing
     class Span
-      attr_accessor span_id: Integer
+      include Metadata
 
-      def set_tag: (String key, ?untyped? value) -> void
+      attr_accessor end_time: (Time | nil)
+      attr_accessor id: Integer
+      attr_accessor meta: Hash[String, String]
+      attr_accessor metrics: Hash[String, Float]
+      attr_accessor name: String
+      attr_accessor parent_id: Integer
+      attr_accessor resource: String
+      attr_accessor service: (String | nil)
+      attr_accessor links: Array[untyped]
+      attr_accessor events: Array[untyped]
+      attr_accessor type: (String | nil)
+      attr_accessor start_time: (Time | nil)
+      attr_accessor status: Integer
+      attr_accessor trace_id: Integer
+      attr_writer duration: (Float | nil)
+
+      def initialize: (
+          String name,
+          ?duration: (Float | nil),
+          ?end_time: (Time | nil),
+          ?id: (Integer | nil),
+          ?meta: (Hash[String, String] | nil),
+          ?metrics: (Hash[String, Float] | nil),
+          ?parent_id: Integer,
+          ?resource: String,
+          ?service: (String | nil),
+          ?start_time: (Time | nil),
+          ?status: Integer,
+          ?type: (String | nil),
+          ?trace_id: (Integer | nil),
+          ?service_entry: (bool | nil),
+          ?links: (Array[untyped] | nil),
+          ?events: (Array[untyped] | nil)
+        ) -> void
+
+      def started?: -> bool
+      def stopped?: -> bool
+      def duration: -> (Float | nil)
+      def set_error: (Exception e) -> void
+      def ==: (Span other) -> bool
+      def to_s: -> String
+      def to_hash: -> Hash[Symbol, untyped]
+      def pretty_print: (PP q) -> void
+
+      private
+
+      def duration_nano: -> Integer?
+
+      def service_entry?: -> bool
+
+      def start_time_nano: -> Integer?
     end
   end
 end
-

sig/datadog/tracing/span_operation.rbs

@@ -10,7 +10,7 @@ module Datadog
 
       attr_reader span_events: untyped
 
-      attr_reader end_time: untyped
+      attr_reader end_time: ::Time
 
       attr_reader id: untyped
 
@@ -22,15 +22,29 @@ module Datadog
 
       attr_reader service: untyped
 
-      attr_reader start_time: untyped
+      attr_reader start_time: ::Time
 
       attr_reader trace_id: untyped
 
       attr_reader type: untyped
 
       attr_accessor status: untyped
 
-      def initialize: (untyped name, ?child_of: untyped?, ?events: untyped?, ?on_error: untyped?, ?parent_id: ::Integer, ?resource: untyped, ?service: untyped?, ?start_time: untyped?, ?tags: untyped?, ?trace_id: untyped?, ?type: untyped?, ?links: untyped?, ?span_events: untyped?) -> void
+      def initialize: (
+          String name,
+          ?events: Events,
+          ?on_error: on_error,
+          ?parent_id: Integer,
+          ?resource: String,
+          ?service: (String | nil),
+          ?start_time: (Time | nil),
+          ?tags: (Hash[String, (String|Numeric)] | nil),
+          ?trace_id: (Integer | nil),
+          ?type: (String | nil),
+          ?links: (Array[SpanLink] | nil),
+          ?span_events: (Array[SpanEvent] | nil),
+          ?id: (Integer | nil)
+      ) -> void
 
       def name=: (untyped name) -> untyped
 
@@ -44,7 +58,7 @@ module Datadog
 
       def start: (?untyped? start_time) -> self
 
-      def stop: (?untyped? stop_time) -> (nil | self)
+      def stop: (?untyped? stop_time) -> self?
 
       def started?: () -> untyped
 
@@ -71,17 +85,17 @@ module Datadog
       class Events
         include Tracing::Events
 
-        DEFAULT_ON_ERROR: untyped
+        DEFAULT_ON_ERROR: on_error
 
         attr_reader after_finish: untyped
 
         attr_reader after_stop: untyped
 
         attr_reader before_start: untyped
 
-        def initialize: (?on_error: untyped?) -> void
+        def initialize: (?on_error: on_error) -> void
 
-        def on_error: () -> untyped
+        def on_error: () -> OnError
 
         class AfterFinish < Tracing::Event
           def initialize: () -> void

sig/datadog/tracing/trace_operation.rbs

@@ -35,8 +35,8 @@ module Datadog
       def resource: () -> untyped
       def resource_override?: () -> bool
       def service: () -> untyped
-      def measure: (untyped op_name, ?events: untyped?, ?on_error: untyped?, ?resource: untyped?, ?service: untyped?, ?start_time: untyped?, ?tags: untyped?, ?type: untyped?) { (untyped, untyped) -> untyped } -> untyped
-      def build_span: (untyped op_name, ?events: untyped?, ?on_error: untyped?, ?resource: untyped?, ?service: untyped?, ?start_time: untyped?, ?tags: untyped?, ?type: untyped?) -> untyped
+      def measure: (untyped op_name, ?events: untyped?, ?on_error: on_error, ?resource: untyped?, ?service: untyped?, ?start_time: untyped?, ?tags: untyped?, ?type: untyped?) { (untyped, untyped) -> untyped } -> untyped
+      def build_span: (untyped op_name, ?events: untyped?, ?on_error: on_error, ?resource: untyped?, ?service: untyped?, ?start_time: untyped?, ?tags: untyped?, ?type: untyped?) -> untyped
       def flush!: () { (untyped) -> untyped } -> untyped
       def to_digest: () -> untyped
       def fork_clone: () -> untyped

sig/datadog/tracing/transport/http/api.rbs

@@ -1,12 +1,14 @@
 module Datadog
-  module Transport
-    module HTTP
-      module API
-        V4: "v0.4"
+  module Tracing
+    module Transport
+      module HTTP
+        module API
+          V4: "v0.4"
 
-        V3: "v0.3"
+          V3: "v0.3"
 
-        def self?.defaults: () -> untyped
+          def self?.defaults: () -> untyped
+        end
       end
     end
   end