Remove opentracing support

.github/CODEOWNERS

@@ -11,8 +11,6 @@
 /lib/datadog/tracing.rb @DataDog/tracing-ruby
 /lib/datadog/opentelemetry/ @DataDog/tracing-ruby
 /lib/datadog/opentelemetry.rb @DataDog/tracing-ruby
-/lib/datadog/opentracer/ @DataDog/tracing-ruby
-/lib/datadog/opentracer.rb @DataDog/tracing-ruby
 /lib-injection/ @DataDog/tracing-ruby
 /lib/datadog/profiling/ @DataDog/profiling-rb
 /lib/datadog/profiling.rb @DataDog/profiling-rb
@@ -25,8 +23,6 @@
 /sig/datadog/tracing.rbs @DataDog/tracing-ruby
 /sig/datadog/opentelemetry/ @DataDog/tracing-ruby
 /sig/datadog/opentelemetry.rbs @DataDog/tracing-ruby
-/sig/datadog/opentracer/ @DataDog/tracing-ruby
-/sig/datadog/opentracer.rbs @DataDog/tracing-ruby
 /sig/datadog/profiling/ @DataDog/profiling-rb
 /sig/datadog/profiling.rbs @DataDog/profiling-rb
 
@@ -36,7 +32,5 @@
 /spec/datadog/tracing_spec.rb @DataDog/tracing-ruby
 /spec/datadog/opentelemetry/ @DataDog/tracing-ruby
 /spec/datadog/opentelemetry_spec.rb @DataDog/tracing-ruby
-/spec/datadog/opentracer/ @DataDog/tracing-ruby
-/spec/datadog/opentracer.rb @DataDog/tracing-ruby
 /spec/datadog/profiling/ @DataDog/profiling-rb
 /spec/datadog/profiling_spec.rb @DataDog/profiling-rb

.github/workflows/test-head.yaml

@@ -27,8 +27,6 @@ jobs:
         continue-on-error: true
       - run: bundle exec rake spec:contrib
         continue-on-error: true
-      - run: bundle exec rake spec:opentracer
-        continue-on-error: true
       # A few contrib jobs that `ddtrace` already includes their gem in the global Gemfile.
       # We technically don't need appraisal to run them, thus are easy candidates for early testing.
       - run: bundle exec rake spec:rake

.rubocop.yml

@@ -457,7 +457,6 @@ Naming/FileName:
     - CRuby
     - GC
     - OpenTelemetry
-    - OpenTracer
     - VM
     - SDK
     - GraphQL

.rubocop_todo.yml

@@ -23,9 +23,6 @@ Lint/MissingCopEnableDirective:
 Lint/MissingSuper:
   Exclude:
     - 'lib/datadog/core/workers/runtime_metrics.rb'
-    - 'lib/datadog/opentracer/scope.rb'
-    - 'lib/datadog/opentracer/span.rb'
-    - 'lib/datadog/opentracer/span_context.rb'
     - 'lib/datadog/profiling/scheduler.rb'
     - 'spec/support/faux_transport.rb'
     - 'spec/support/spy_transport.rb'
@@ -68,12 +65,6 @@ Naming/FileName:
     - 'lib/ddtrace/transport/ext.rb'
     - 'lib/ddtrace/version.rb'
 
-# Offense count: 3
-# This cop supports unsafe autocorrection (--autocorrect-all).
-RSpec/EmptyExampleGroup:
-  Exclude:
-    - 'spec/datadog/opentracer/distributed_headers_spec.rb'
-
 # Offense count: 1
 RSpec/IteratedExpectation:
   Exclude:
@@ -108,15 +99,12 @@ RSpec/RepeatedDescription:
 # Offense count: 10
 RSpec/RepeatedExampleGroupDescription:
   Exclude:
-    - 'spec/datadog/opentracer/scope_manager_spec.rb'
-    - 'spec/datadog/opentracer/thread_local_scope_manager_spec.rb'
     - 'spec/datadog/tracing/contrib/grape/tracer_spec.rb'
     - 'spec/datadog/tracing/contrib/redis/quantize_spec.rb'
 
 # Offense count: 40
 RSpec/ScatteredSetup:
   Exclude:
-    - 'spec/datadog/opentracer/span_spec.rb'
     - 'spec/datadog/tracing/benchmark/support/benchmark_helper.rb'
     - 'spec/datadog/tracing/contrib/action_cable/instrumentation_spec.rb'
     - 'spec/datadog/tracing/contrib/action_cable/patcher_spec.rb'

Rakefile

@@ -26,9 +26,6 @@ TEST_METADATA = {
   'contrib' => {
     '' => '✅ 2.1 / ✅ 2.2 / ✅ 2.3 / ✅ 2.4 / ✅ 2.5 / ✅ 2.6 / ✅ 2.7 / ✅ 3.0 / ✅ 3.1 / ✅ 3.2 / ✅ 3.3 / ✅ jruby'
   },
-  'opentracer' => {
-    'opentracing' => '✅ 2.1 / ✅ 2.2 / ✅ 2.3 / ✅ 2.4 / ✅ 2.5 / ✅ 2.6 / ✅ 2.7 / ✅ 3.0 / ✅ 3.1 / ✅ 3.2 / ✅ 3.3 / ✅ jruby'
-  },
   'opentelemetry' => {
     'opentelemetry' => '❌ 2.1 / ❌ 2.2 / ❌ 2.3 / ❌ 2.4 / ❌ 2.5 / ✅ 2.6 / ✅ 2.7 / ✅ 3.0 / ✅ 3.1 / ✅ 3.2 / ✅ 3.3 / ❌ jruby'
   },
@@ -333,7 +330,7 @@ namespace :spec do
   desc '' # "Explicitly hiding from `rake -T`"
   RSpec::Core::RakeTask.new(:main) do |t, args|
     t.pattern = 'spec/**/*_spec.rb'
-    t.exclude_pattern = 'spec/**/{contrib,benchmark,redis,opentracer,auto_instrument,opentelemetry,profiling}/**/*_spec.rb,'\
+    t.exclude_pattern = 'spec/**/{contrib,benchmark,redis,auto_instrument,opentelemetry,profiling}/**/*_spec.rb,'\
                         ' spec/**/{auto_instrument,opentelemetry}_spec.rb'
     t.rspec_opts = args.to_a.join(' ')
   end
@@ -343,12 +340,6 @@ namespace :spec do
     t.rspec_opts = args.to_a.join(' ')
   end
 
-  desc '' # "Explicitly hiding from `rake -T`"
-  RSpec::Core::RakeTask.new(:opentracer) do |t, args|
-    t.pattern = 'spec/datadog/opentracer/**/*_spec.rb'
-    t.rspec_opts = args.to_a.join(' ')
-  end
-
   desc '' # "Explicitly hiding from `rake -T`"
   RSpec::Core::RakeTask.new(:opentelemetry) do |t, args|
     t.pattern = 'spec/datadog/opentelemetry/**/*_spec.rb,spec/datadog/opentelemetry_spec.rb'

Steepfile

@@ -152,22 +152,6 @@ target :ddtrace do
   ignore 'lib/datadog/opentelemetry/sdk/propagator.rb'
   ignore 'lib/datadog/opentelemetry/sdk/span_processor.rb'
   ignore 'lib/datadog/opentelemetry/sdk/trace/span.rb'
-  ignore 'lib/datadog/opentracer.rb'
-  ignore 'lib/datadog/opentracer/binary_propagator.rb'
-  ignore 'lib/datadog/opentracer/carrier.rb'
-  ignore 'lib/datadog/opentracer/distributed_headers.rb'
-  ignore 'lib/datadog/opentracer/global_tracer.rb'
-  ignore 'lib/datadog/opentracer/propagator.rb'
-  ignore 'lib/datadog/opentracer/rack_propagator.rb'
-  ignore 'lib/datadog/opentracer/scope.rb'
-  ignore 'lib/datadog/opentracer/scope_manager.rb'
-  ignore 'lib/datadog/opentracer/span.rb'
-  ignore 'lib/datadog/opentracer/span_context.rb'
-  ignore 'lib/datadog/opentracer/span_context_factory.rb'
-  ignore 'lib/datadog/opentracer/text_map_propagator.rb'
-  ignore 'lib/datadog/opentracer/thread_local_scope.rb'
-  ignore 'lib/datadog/opentracer/thread_local_scope_manager.rb'
-  ignore 'lib/datadog/opentracer/tracer.rb'
   ignore 'lib/datadog/profiling/collectors/code_provenance.rb'
   ignore 'lib/datadog/profiling/ext/forking.rb'
   ignore 'lib/datadog/profiling/scheduler.rb'
@@ -623,7 +607,6 @@ target :ddtrace do
   library 'minitest'
   library 'mysql2'
   library 'mysql2-aurora'
-  library 'opentracing'
   library 'concurrent-ruby'
   library 'faraday'
   library 'seahorse'

docs/Compatibility.md

@@ -35,7 +35,7 @@ The Ruby Datadog Trace library is open source. See the [dd-trace-rb][1] GitHub r
 
 | Type        | Documentation                                   | Version               | Gem version support |
 | ----------- | ----------------------------------------------- | --------------------- | ------------------- |
-| OpenTracing | https://github.com/opentracing/opentracing-ruby | 0.4.1+                | >= 0.16.0           |
+| OpenTracing | https://github.com/opentracing/opentracing-ruby | 0.4.1+                | < 2.0.0            |
 
 *Full* support indicates all tracer features are available.
 

docs/GettingStarted.md

@@ -143,44 +143,6 @@ If your application does not use the supported gems (Rails or Hanami) above, you
       - [Add additional configuration settings](#additional-configuration)
       - [Activate or reconfigure instrumentation](#integration-instrumentation)
 
-#### Configuring OpenTracing
-
-1. Add the `ddtrace` gem to your Gemfile:
-
-    ```ruby
-    source 'https://rubygems.org'
-    gem 'ddtrace'
-    ```
-
-2. Install the gem with `bundle install`
-3. To your OpenTracing configuration file, add the following:
-
-    ```ruby
-    require 'opentracing'
-    require 'datadog/tracing'
-    require 'datadog/opentracer'
-
-    # Activate the Datadog tracer for OpenTracing
-    OpenTracing.global_tracer = Datadog::OpenTracer::Tracer.new
-    ```
-
-4. Add a configuration block to your application:
-
-    ```ruby
-    Datadog.configure do |c|
-      # Configure the Datadog tracer here.
-      # Activate integrations, change tracer settings, etc...
-      # By default without additional configuration,
-      # no additional integrations will be traced, only
-      # what you have instrumented with OpenTracing.
-    end
-    ```
-
-     Using this block you can:
-
-      - [Add additional Datadog configuration settings](#additional-configuration)
-      - [Activate or reconfigure Datadog instrumentation](#integration-instrumentation)
-
 #### Configuring OpenTelemetry
 
 You can send OpenTelemetry traces directly to the Datadog Agent (without `ddtrace`) by using OTLP. Check out our documentation on [OTLP ingest in the Datadog Agent](https://docs.datadoghq.com/tracing/setup_overview/open_standards/#otlp-ingest-in-datadog-agent) for details.
@@ -2608,35 +2570,6 @@ In addition, all metrics include the following tags:
 | `language`   | Programming language traced. (e.g. `ruby`)              |
 | `service`    | List of services this associated with this metric.      |
 
-### OpenTracing
-
-For setting up Datadog with OpenTracing, see our [Configuring OpenTracing](#configuring-opentracing) section for details.
-
-**Configuring Datadog tracer settings**
-
-The underlying Datadog tracer can be configured by passing options (which match `Datadog::Tracer`) when configuring the global tracer:
-
-```ruby
-# Where `options` is a Hash of options provided to Datadog::Tracer
-OpenTracing.global_tracer = Datadog::OpenTracer::Tracer.new(**options)
-```
-
-It can also be configured by using `Datadog.configure` described in the [Additional Configuration](#additional-configuration) section.
-
-**Activating and configuring integrations**
-
-By default, configuring OpenTracing with Datadog will not automatically activate any additional instrumentation provided by Datadog. You will only receive spans and traces from OpenTracing instrumentation you have in your application.
-
-However, additional instrumentation provided by Datadog can be activated alongside OpenTracing using `Datadog.configure`, which can be used to enhance your tracing further. To activate this, see [Integration instrumentation](#integration-instrumentation) for more details.
-
-**Supported serialization formats**
-
-| Type                           | Supported? | Additional information |
-| ------------------------------ | ---------- | ---------------------- |
-| `OpenTracing::FORMAT_TEXT_MAP` | Yes        |                        |
-| `OpenTracing::FORMAT_RACK`     | Yes        | Because of the loss of resolution in the Rack format, please note that baggage items with names containing either upper case characters or `-` will be converted to lower case and `_` in a round-trip respectively. We recommend avoiding these characters or accommodating accordingly on the receiving end. |
-| `OpenTracing::FORMAT_BINARY`   | No         |                        |
-
 ### Profiling
 
 `ddtrace` can produce profiles that measure method-level application resource usage within production environments. These profiles can give insight into resources spent in Ruby code outside of existing trace instrumentation.

lib/datadog/appsec/contrib/rails/patcher.rb

@@ -51,7 +51,6 @@ def before_initialize(app)
             BEFORE_INITIALIZE_ONLY_ONCE_PER_APP[app].run do
               # Middleware must be added before the application is initialized.
               # Otherwise the middleware stack will be frozen.
-              # Sometimes we don't want to activate middleware e.g. OpenTracing, etc.
               add_middleware(app) if Datadog.configuration.tracing[:rails][:middleware]
               patch_process_action
             end