diff --git a/Appraisals b/Appraisals
index 68ec3e31f6c..9ae895378f0 100644
--- a/Appraisals
+++ b/Appraisals
@@ -8,6 +8,16 @@ def self.gem_cucumber(version)
   end
 end
 
+def self.apraise_opentelemetry
+  appraise 'opentelemetry-pre-1-0' do
+    gem 'opentelemetry-sdk', '< 1'
+  end
+
+  appraise 'opentelemetry-1-0' do
+    gem 'opentelemetry-sdk', '>= 1.0.0.rc2'
+  end
+end
+
 if Gem::Version.new(RUBY_VERSION) < Gem::Version.new(Datadog::VERSION::MINIMUM_RUBY_VERSION)
   raise NotImplementedError, "Ruby versions < #{Datadog::VERSION::MINIMUM_RUBY_VERSION} are not supported!"
 elsif Gem::Version.new('2.1.0') <= Gem::Version.new(RUBY_VERSION) \
@@ -784,6 +794,8 @@ elsif Gem::Version.new('2.5.0') <= Gem::Version.new(RUBY_VERSION) \
     gem 'resque', '>= 2.0'
   end
 
+  apraise_opentelemetry
+
   (3..5).each { |v| gem_cucumber(v) }
 
   appraise 'contrib' do
@@ -966,6 +978,8 @@ elsif Gem::Version.new('2.6.0') <= Gem::Version.new(RUBY_VERSION) \
       gem 'resque', '>= 2.0'
     end
 
+    apraise_opentelemetry
+
     (3..5).each { |v| gem_cucumber(v) }
 
     appraise 'contrib' do
@@ -1149,6 +1163,8 @@ elsif Gem::Version.new('2.7.0') <= Gem::Version.new(RUBY_VERSION) \
       gem 'resque', '>= 2.0'
     end
 
+    apraise_opentelemetry
+
     (3..5).each { |v| gem_cucumber(v) }
 
     appraise 'contrib' do
@@ -1247,6 +1263,8 @@ elsif Gem::Version.new('3.0.0') <= Gem::Version.new(RUBY_VERSION)
     gem 'resque', '>= 2.0'
   end
 
+  apraise_opentelemetry
+
   (3..5).each { |v| gem_cucumber(v) }
 
   appraise 'contrib' do
diff --git a/Rakefile b/Rakefile
index 1bd6dbaf1b8..410536afc74 100644
--- a/Rakefile
+++ b/Rakefile
@@ -18,7 +18,7 @@ namespace :spec do
   RSpec::Core::RakeTask.new(:main) do |t, args|
     t.pattern = 'spec/**/*_spec.rb'
     t.exclude_pattern = 'spec/**/{contrib,benchmark,redis,opentracer,opentelemetry,auto_instrument}/**/*_spec.rb,'\
-                        ' spec/**/auto_instrument_spec.rb'
+                        ' spec/**/auto_instrument_spec.rb,spec/**/profiling/**/**opentelemetry**_spec.rb'
     t.rspec_opts = args.to_a.join(' ')
   end
 
@@ -68,6 +68,11 @@ namespace :spec do
     t.rspec_opts = args.to_a.join(' ')
   end
 
+  RSpec::Core::RakeTask.new(:'profiling-opentelemetry') do |t, args|
+    t.pattern = 'spec/**/profiling/**/**opentelemetry**_spec.rb'
+    t.rspec_opts = args.to_a.join(' ')
+  end
+
   RSpec::Core::RakeTask.new(:contrib) do |t, args|
     contrib_paths = [
       'analytics',
@@ -628,6 +633,11 @@ task :ci do
     declare 'bundle exec appraisal cucumber3 rake spec:cucumber'
     declare 'bundle exec appraisal cucumber4 rake spec:cucumber'
     declare 'bundle exec appraisal cucumber5 rake spec:cucumber'
+
+    # Profiling
+    declare 'bundle exec appraisal opentelemetry-pre-1-0 rake spec:profiling-opentelemetry'
+    declare 'bundle exec appraisal opentelemetry-1-0 rake spec:profiling-opentelemetry'
+
   elsif Gem::Version.new('2.6.0') <= Gem::Version.new(RUBY_VERSION) \
       && Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.7.0')
     # Main library
@@ -726,6 +736,10 @@ task :ci do
       declare 'bundle exec appraisal cucumber3 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber4 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber5 rake spec:cucumber'
+
+      # Profiling
+      declare 'bundle exec appraisal opentelemetry-pre-1-0 rake spec:profiling-opentelemetry'
+      declare 'bundle exec appraisal opentelemetry-1-0 rake spec:profiling-opentelemetry'
     end
   elsif Gem::Version.new('2.7.0') <= Gem::Version.new(RUBY_VERSION) \
       && Gem::Version.new(RUBY_VERSION) < Gem::Version.new('3.0.0')
@@ -824,6 +838,10 @@ task :ci do
       declare 'bundle exec appraisal cucumber3 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber4 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber5 rake spec:cucumber'
+
+      # Profiling
+      declare 'bundle exec appraisal opentelemetry-pre-1-0 rake spec:profiling-opentelemetry'
+      declare 'bundle exec appraisal opentelemetry-1-0 rake spec:profiling-opentelemetry'
     end
   elsif Gem::Version.new('3.0.0') <= Gem::Version.new(RUBY_VERSION)
     # Main library
@@ -898,6 +916,11 @@ task :ci do
       declare 'bundle exec appraisal cucumber3 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber4 rake spec:cucumber'
       declare 'bundle exec appraisal cucumber5 rake spec:cucumber'
+
+      # Profiling
+      declare 'bundle exec appraisal opentelemetry-pre-1-0 rake spec:profiling-opentelemetry'
+      declare 'bundle exec appraisal opentelemetry-1-0 rake spec:profiling-opentelemetry'
+
     end
   end
 end
diff --git a/docs/GettingStarted.md b/docs/GettingStarted.md
index e47ed2b57b4..8f042121956 100644
--- a/docs/GettingStarted.md
+++ b/docs/GettingStarted.md
@@ -86,6 +86,9 @@ To contribute, check out the [contribution guidelines][contribution docs] and [d
          - [For application runtime](#for-application-runtime)
      - [OpenTracing](#opentracing)
      - [Profiling](#profiling)
+         - [Troubleshooting](#troubleshooting)
+         - [Profiling Resque jobs](#profiling-resque-jobs)
+         - [Linking OpenTelemetry traces with profiles](#linking-opentelemetry-traces-with-profiles)
  - [Known issues and suggested configurations](#known-issues-and-suggested-configurations)
     - [Payload too large](#payload-too-large)
     - [Stack level too deep](#stack-level-too-deep)
@@ -2491,12 +2494,31 @@ However, additional instrumentation provided by Datadog can be activated alongsi
 
 To get started with profiling, follow the [Profiler Getting Started Guide](https://docs.datadoghq.com/tracing/profiler/getting_started/?code-lang=ruby).
 
+#### Troubleshooting
+
+If you run into issues with profiling, please check the [Profiler Troubleshooting Guide](https://docs.datadoghq.com/tracing/profiler/profiler_troubleshooting/?code-lang=ruby).
+
 #### Profiling Resque jobs
 
 When profiling [Resque](https://github.com/resque/resque) jobs, you should set the `RUN_AT_EXIT_HOOKS=1` option described in the [Resque](https://github.com/resque/resque/blob/v2.0.0/docs/HOOKS.md#worker-hooks) documentation.
 
 Without this flag, profiles for short-lived Resque jobs will not be available as Resque kills worker processes before they have a chance to submit this information.
 
+#### Linking OpenTelemetry traces with profiles
+
+Profiler's support for [Investigating Code Hotspots from Traces](https://docs.datadoghq.com/tracing/profiler/connect_traces_and_profiles)
+is also available when using the [OpenTelemetry](https://github.com/open-telemetry/opentelemetry-ruby) Ruby libraries.
+
+To enable this feature, and after following regular steps for enabling profiling,
+modify your OpenTelemetry gem configuration to add an additional span processor:
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  c.add_span_processor(Datadog::Profiling::Ext::OpenTelemetryTraceLinking.new)
+  # ... rest of your configuration for using OpenTelemetry
+end
+```
+
 ## Known issues and suggested configurations
 
 ### Payload too large
diff --git a/docs/ProfilingDevelopment.md b/docs/ProfilingDevelopment.md
index 77ba39defe0..31fd3cfb276 100644
--- a/docs/ProfilingDevelopment.md
+++ b/docs/ProfilingDevelopment.md
@@ -16,10 +16,13 @@ Components below live inside <../lib/ddtrace/profiling>:
 * `Ext::CThread`: Extension used to enable CPU-time profiling via use of Pthread's `getcpuclockid`.
 * `Ext::Forking`: Monkey patches `Kernel#fork`, adding a `Kernel#at_fork` callback mechanism which is used to restore
   profiling abilities after the VM forks (such as re-instrumenting the main thread, and restarting profiler threads).
+* `Ext::OpenTelemetryTraceLinking`: Helper class to automatically add the runtime id tag to OpenTelemetry traces.
+  Optionally added by users to their OpenTelemetry gem configuration to enable linking OpenTelemetry traces with profiles.
 * `Pprof::*` (in <../lib/ddtrace/profiling/pprof>): Converts samples captured in the `Recorder` into the pprof format.
 * `Tasks::Setup`: Takes care of loading our extensions/monkey patches to handle fork() and CPU profiling.
 * `Transport::*` (in <../lib/ddtrace/profiling/transport>): Implements transmission of profiling payloads to the Datadog agent
   or backend.
+* `TraceIdentifiers::*`: Used to retrieve trace id and span id from tracers, to be used to connect traces to profiles.
 * `BacktraceLocation`: Entity class used to represent an entry in a stack trace.
 * `Buffer`: Bounded buffer used to store profiling events.
 * `Exporter`: Writes profiling data to a given transport.
@@ -41,22 +44,14 @@ flow:
 4. The `Setup` task activates our extensions
     * `Datadog::Profiling::Ext::Forking`
     * `Datadog::Profiling::Ext::CPU`
-5. Still inside `Datadog::Components`, the `build_profiler` method then creates and wires up the Profiler:
-    ```ruby
-          recorder = build_profiler_recorder(settings)
-          collectors = build_profiler_collectors(settings, recorder)
-          exporters = build_profiler_exporters(settings)
-          scheduler = build_profiler_scheduler(settings, recorder, exporters)
-
-          Datadog::Profiler.new(collectors, scheduler)
-    ```
+5. Still inside `Datadog::Components`, the `build_profiler` method then creates and wires up the Profiler as such:
     ```asciiflow
             +------------+
             |  Profiler  |
-            +-+--------+-+
-              |        |
-              v        v
-    +---------+--+  +--+--------+
+            +-+-------+--+
+              |       |
+              v       v
+    +---------+--+  +-+---------+
     | Collectors |  | Scheduler |
     +---------+--+  +-+-------+-+
               |       |       |
@@ -86,3 +81,32 @@ takes care of encoding the data and reporting it to the datadog agent (or to the
 ## How CPU-time profiling works
 
 **TODO**: Document our pthread-based approach to getting CPU-time for threads.
+
+## How linking of traces to profiles works
+
+The [code hotspots feature](https://docs.datadoghq.com/tracing/profiler/connect_traces_and_profiles) allows users to start
+from a trace and then to investigate the profile that corresponds to that trace.
+
+This works in two steps:
+1. Linking a trace to the profile that was gathered while it executed
+2. Enabling the filtering of a profile to contain only the samples relating to a given trace/span
+
+To link a trace to a profile, we must ensure that both have the same `runtime-id` tag.
+This tag is in `Datadog::Runtime::Identity.id` and is automatically added by both the tracer and the profiler to reported
+traces/profiles.
+
+(For traces reported using the OpenTelemetry gem, users need to add our `Datadog::Profiling::Ext::OpenTelemetryTraceLinking`
+class to their configuration, so that this tag gets added.)
+
+The profiler backend links a trace covering a given time interval to the profiles covering the same time interval,
+whenever they share the same `runtime-id`.
+
+To further enable filtering of a profile to show only samples related to a given trace/span, each sample taken by the
+profiler is tagged with the trace_id and span_id for the given trace/span.
+
+This is done using the `Datadog::Profiling::TraceIdentifiers::Helper` that retrieves a trace_id and span_id, if
+available, from the supported tracers. This helper is called by the `Collectors::Stack` during sampling.
+
+Note that if a given trace executes too fast, it's possible that the profiler will not contain any samples for that
+specific trace. Nevertheless, the linking still works and is useful, as it allows users to explore what was going on their
+profile at that time, even if they can't filter down to the specific request.
diff --git a/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile b/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..0cba89f7b08
--- /dev/null
+++ b/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile
@@ -0,0 +1,35 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-debugger-jruby"
+gem "rake", ">= 10.5"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile.lock b/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..6d902f5b1db
--- /dev/null
+++ b/gemfiles/jruby_9.2.0.0_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,163 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3-java)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2-java)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.13.1-java)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+      spoon (~> 0.0)
+    pry-debugger-jruby (2.0.0-java)
+      pry (>= 0.13, < 0.14)
+      ruby-debug-base (>= 0.10.4, < 0.12)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-debug-base (0.11.0-java)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    spoon (0.0.6)
+      ffi
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  java
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-debugger-jruby
+  rake (>= 10.5)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   1.17.1
diff --git a/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile b/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..da6bc5b188e
--- /dev/null
+++ b/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,35 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-debugger-jruby"
+gem "rake", ">= 10.5"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..083365d2f96
--- /dev/null
+++ b/gemfiles/jruby_9.2.0.0_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,163 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3-java)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2-java)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.13.1-java)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+      spoon (~> 0.0)
+    pry-debugger-jruby (2.0.0-java)
+      pry (>= 0.13, < 0.14)
+      ruby-debug-base (>= 0.10.4, < 0.12)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-debug-base (0.11.0-java)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    spoon (0.0.6)
+      ffi
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  java
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-debugger-jruby
+  rake (>= 10.5)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   1.17.1
diff --git a/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile b/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..0cba89f7b08
--- /dev/null
+++ b/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile
@@ -0,0 +1,35 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-debugger-jruby"
+gem "rake", ">= 10.5"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile.lock b/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..4f9ddc4b61e
--- /dev/null
+++ b/gemfiles/jruby_9.2.18.0_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,163 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3-java)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2-java)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.13.1-java)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+      spoon (~> 0.0)
+    pry-debugger-jruby (2.0.0-java)
+      pry (>= 0.13, < 0.14)
+      ruby-debug-base (>= 0.10.4, < 0.12)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-debug-base (0.11.0-java)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    spoon (0.0.6)
+      ffi
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  universal-java-1.8
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-debugger-jruby
+  rake (>= 10.5)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile b/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..da6bc5b188e
--- /dev/null
+++ b/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,35 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-debugger-jruby"
+gem "rake", ">= 10.5"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..1a62e8348a7
--- /dev/null
+++ b/gemfiles/jruby_9.2.18.0_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,163 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3-java)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2-java)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.13.1-java)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+      spoon (~> 0.0)
+    pry-debugger-jruby (2.0.0-java)
+      pry (>= 0.13, < 0.14)
+      ruby-debug-base (>= 0.10.4, < 0.12)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-debug-base (0.11.0-java)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    spoon (0.0.6)
+      ffi
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  universal-java-1.8
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-debugger-jruby
+  rake (>= 10.5)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile b/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..4702f8bee7c
--- /dev/null
+++ b/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-nav"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile.lock b/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..fe4e30f2f44
--- /dev/null
+++ b/gemfiles/ruby_2.5.9_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,171 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (0.9.2)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    pry-nav (0.3.0)
+      pry (>= 0.9.10, < 0.13.0)
+    pry-stack_explorer (0.4.9.3)
+      binding_of_caller (>= 0.7)
+      pry (>= 0.9.11)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-nav
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile b/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..20b02179e47
--- /dev/null
+++ b/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-nav"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..204b1f6971b
--- /dev/null
+++ b/gemfiles/ruby_2.5.9_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,171 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (0.9.2)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    pry-nav (0.3.0)
+      pry (>= 0.9.10, < 0.13.0)
+    pry-stack_explorer (0.4.9.3)
+      binding_of_caller (>= 0.7)
+      pry (>= 0.9.11)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.3.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-nav
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile b/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..e22eecddc4a
--- /dev/null
+++ b/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile.lock b/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..de86d55c187
--- /dev/null
+++ b/gemfiles/ruby_2.6.7_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,173 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile b/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..3505ffe3d97
--- /dev/null
+++ b/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..62edf0480a8
--- /dev/null
+++ b/gemfiles/ruby_2.6.7_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,173 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile b/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..e22eecddc4a
--- /dev/null
+++ b/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile.lock b/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..71fd34eaa24
--- /dev/null
+++ b/gemfiles/ruby_2.7.3_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,173 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.1.4
diff --git a/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile b/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..3505ffe3d97
--- /dev/null
+++ b/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,39 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..6aa343815c9
--- /dev/null
+++ b/gemfiles/ruby_2.7.3_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,173 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    yard (0.9.26)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.1.4
diff --git a/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile b/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile
new file mode 100644
index 00000000000..f286002acd1
--- /dev/null
+++ b/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile
@@ -0,0 +1,40 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "webrick", ">= 1.7.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", ">= 1.0.0.rc2"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile.lock b/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile.lock
new file mode 100644
index 00000000000..df9195ad827
--- /dev/null
+++ b/gemfiles/ruby_3.0.1_opentelemetry_1_0.gemfile.lock
@@ -0,0 +1,175 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (1.0.0.rc2)
+    opentelemetry-common (0.19.0)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-instrumentation-base (0.18.1)
+      opentelemetry-api (~> 1.0.0.rc2)
+    opentelemetry-sdk (1.0.0.rc2)
+      opentelemetry-api (~> 1.0.0.rc2)
+      opentelemetry-common (~> 0.19.0)
+      opentelemetry-instrumentation-base (~> 0.18.1)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    webrick (1.7.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (>= 1.0.0.rc2)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  webrick (>= 1.7.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile b/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile
new file mode 100644
index 00000000000..727c79e11ab
--- /dev/null
+++ b/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile
@@ -0,0 +1,40 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "addressable", "~> 2.4.0"
+gem "appraisal", "~> 2.2"
+gem "benchmark-ips", "~> 2.8"
+gem "benchmark-memory", "~> 0.1"
+gem "builder"
+gem "climate_control", "~> 0.2.0"
+gem "concurrent-ruby"
+gem "memory_profiler", "~> 0.9"
+gem "minitest", "= 5.10.1"
+gem "minitest-around", "0.5.0"
+gem "minitest-stub_any_instance", "1.0.2"
+gem "pimpmychangelog", ">= 0.1.2"
+gem "pry"
+gem "pry-byebug"
+gem "pry-stack_explorer"
+gem "rake", ">= 10.5"
+gem "redcarpet", "~> 3.4"
+gem "rspec", "~> 3.10"
+gem "rspec-collection_matchers", "~> 1.1"
+gem "rspec_junit_formatter", ">= 0.4.1"
+gem "rspec_n", "~> 1.3"
+gem "ruby-prof", "~> 1.4"
+gem "simplecov", git: "https://github.com/DataDog/simplecov", ref: "3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db"
+gem "warning", "~> 1"
+gem "webmock", ">= 3.10.0"
+gem "webrick", ">= 1.7.0"
+gem "yard", "~> 0.9"
+gem "rubocop", "~> 1.10", require: false
+gem "rubocop-performance", "~> 1.9", require: false
+gem "rubocop-rspec", "~> 2.2", require: false
+gem "dogstatsd-ruby", "< 5.0"
+gem "opentracing", ">= 0.4.1"
+gem "google-protobuf", ["~> 3.0", "!= 3.7.0", "!= 3.7.1"]
+gem "opentelemetry-sdk", "< 1"
+
+gemspec path: "../"
diff --git a/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile.lock b/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile.lock
new file mode 100644
index 00000000000..463245faf96
--- /dev/null
+++ b/gemfiles/ruby_3.0.1_opentelemetry_pre_1_0.gemfile.lock
@@ -0,0 +1,175 @@
+GIT
+  remote: https://github.com/DataDog/simplecov
+  revision: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  ref: 3bb6b7ee58bf4b1954ca205f50dd44d6f41c57db
+  specs:
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+
+PATH
+  remote: ..
+  specs:
+    ddtrace (0.50.0)
+      ffi (~> 1.0)
+      msgpack
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.4.0)
+    appraisal (2.4.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    benchmark-ips (2.9.1)
+    benchmark-memory (0.1.2)
+      memory_profiler (~> 0.9)
+    binding_of_caller (1.0.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    climate_control (0.2.0)
+    coderay (1.1.3)
+    colorize (0.8.1)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
+    cri (2.15.11)
+    debug_inspector (1.1.0)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    dogstatsd-ruby (4.8.3)
+    ffi (1.15.3)
+    google-protobuf (3.17.3-x86_64-linux)
+    hashdiff (1.0.1)
+    memory_profiler (0.9.14)
+    method_source (1.0.0)
+    minitest (5.10.1)
+    minitest-around (0.5.0)
+      minitest (~> 5.0)
+    minitest-stub_any_instance (1.0.2)
+    msgpack (1.4.2)
+    opentelemetry-api (0.17.0)
+    opentelemetry-common (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-instrumentation-base (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+    opentelemetry-sdk (0.17.0)
+      opentelemetry-api (~> 0.17.0)
+      opentelemetry-common (~> 0.17.0)
+      opentelemetry-instrumentation-base (~> 0.17.0)
+    opentracing (0.5.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    pimpmychangelog (0.1.3)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.8.0)
+      byebug (~> 11.0)
+      pry (~> 0.10)
+    pry-stack_explorer (0.6.1)
+      binding_of_caller (~> 1.0)
+      pry (~> 0.13)
+    rainbow (3.0.0)
+    rake (13.0.3)
+    redcarpet (3.5.1)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-collection_matchers (1.2.0)
+      rspec-expectations (>= 2.99.0.beta1)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rspec_junit_formatter (0.4.1)
+      rspec-core (>= 2, < 4, != 2.12.0)
+    rspec_n (1.4.0)
+      colorize (~> 0.8.0)
+      cri (~> 2.15.3)
+    rubocop (1.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rspec (2.4.0)
+      rubocop (~> 1.0)
+      rubocop-ast (>= 1.1.0)
+    ruby-prof (1.4.3)
+    ruby-progressbar (1.11.0)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    thor (1.1.0)
+    unicode-display_width (2.0.0)
+    warning (1.2.0)
+    webmock (3.13.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+    webrick (1.7.0)
+    yard (0.9.26)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  addressable (~> 2.4.0)
+  appraisal (~> 2.2)
+  benchmark-ips (~> 2.8)
+  benchmark-memory (~> 0.1)
+  builder
+  climate_control (~> 0.2.0)
+  concurrent-ruby
+  ddtrace!
+  dogstatsd-ruby (< 5.0)
+  google-protobuf (~> 3.0, != 3.7.1, != 3.7.0)
+  memory_profiler (~> 0.9)
+  minitest (= 5.10.1)
+  minitest-around (= 0.5.0)
+  minitest-stub_any_instance (= 1.0.2)
+  opentelemetry-sdk (< 1)
+  opentracing (>= 0.4.1)
+  pimpmychangelog (>= 0.1.2)
+  pry
+  pry-byebug
+  pry-stack_explorer
+  rake (>= 10.5)
+  redcarpet (~> 3.4)
+  rspec (~> 3.10)
+  rspec-collection_matchers (~> 1.1)
+  rspec_junit_formatter (>= 0.4.1)
+  rspec_n (~> 1.3)
+  rubocop (~> 1.10)
+  rubocop-performance (~> 1.9)
+  rubocop-rspec (~> 2.2)
+  ruby-prof (~> 1.4)
+  simplecov!
+  warning (~> 1)
+  webmock (>= 3.10.0)
+  webrick (>= 1.7.0)
+  yard (~> 0.9)
+
+BUNDLED WITH
+   2.2.19
diff --git a/lib/ddtrace/configuration/components.rb b/lib/ddtrace/configuration/components.rb
index 2feece4f08d..904a92bd749 100644
--- a/lib/ddtrace/configuration/components.rb
+++ b/lib/ddtrace/configuration/components.rb
@@ -70,7 +70,7 @@ def build_tracer(settings, agent_settings)
           tracer
         end
 
-        def build_profiler(settings, agent_settings)
+        def build_profiler(settings, agent_settings, tracer)
           return unless Datadog::Profiling.supported? && settings.profiling.enabled
 
           unless defined?(Datadog::Profiling::Tasks::Setup)
@@ -107,8 +107,10 @@ def build_profiler(settings, agent_settings)
 
           # NOTE: Please update the Initialization section of ProfilingDevelopment.md with any changes to this method
 
+          trace_identifiers_helper = Datadog::Profiling::TraceIdentifiers::Helper.new(tracer: tracer)
+
           recorder = build_profiler_recorder(settings)
-          collectors = build_profiler_collectors(settings, recorder)
+          collectors = build_profiler_collectors(settings, recorder, trace_identifiers_helper)
           exporters = build_profiler_exporters(settings, agent_settings)
           scheduler = build_profiler_scheduler(settings, recorder, exporters)
 
@@ -164,10 +166,11 @@ def build_profiler_recorder(settings)
           Datadog::Profiling::Recorder.new(event_classes, settings.profiling.max_events)
         end
 
-        def build_profiler_collectors(settings, recorder)
+        def build_profiler_collectors(settings, recorder, trace_identifiers_helper)
           [
             Datadog::Profiling::Collectors::Stack.new(
               recorder,
+              trace_identifiers_helper: trace_identifiers_helper,
               max_frames: settings.profiling.max_frames
               # TODO: Provide proc that identifies Datadog worker threads?
               # ignore_thread: settings.profiling.ignore_profiler
@@ -209,7 +212,7 @@ def initialize(settings)
         @tracer = self.class.build_tracer(settings, agent_settings)
 
         # Profiler
-        @profiler = self.class.build_profiler(settings, agent_settings)
+        @profiler = self.class.build_profiler(settings, agent_settings, @tracer)
 
         # Runtime metrics
         @runtime_metrics = self.class.build_runtime_metrics_worker(settings)
diff --git a/lib/ddtrace/profiling.rb b/lib/ddtrace/profiling.rb
index a6c39cf56ea..c1ecd52cc0b 100644
--- a/lib/ddtrace/profiling.rb
+++ b/lib/ddtrace/profiling.rb
@@ -1,3 +1,7 @@
+# Unlike the rest of the Profiler, this class is always loaded because it's expected to be instanced by users directly,
+# and thus should always be available, even when Profiler is disabled or not available.
+require 'ddtrace/profiling/ext/opentelemetry_trace_linking'
+
 module Datadog
   # Contains profiler for generating stack profiles, etc.
   module Profiling
@@ -95,6 +99,7 @@ def self.load_profiling
       require 'ddtrace/profiling/transport/io'
       require 'ddtrace/profiling/transport/http'
       require 'ddtrace/profiling/profiler'
+      require 'ddtrace/profiling/trace_identifiers/helper'
 
       require 'ddtrace/profiling/pprof/pprof_pb'
 
diff --git a/lib/ddtrace/profiling/collectors/stack.rb b/lib/ddtrace/profiling/collectors/stack.rb
index 1c86462e884..38fcdd0b8e5 100644
--- a/lib/ddtrace/profiling/collectors/stack.rb
+++ b/lib/ddtrace/profiling/collectors/stack.rb
@@ -11,8 +11,7 @@ module Collectors
       # Collects stack trace samples from Ruby threads for both CPU-time (if available) and wall-clock.
       # Runs on its own background thread.
       #
-      # rubocop:disable Metrics/ClassLength
-      class Stack < Worker
+      class Stack < Worker # rubocop:disable Metrics/ClassLength
         include Workers::Polling
 
         DEFAULT_MAX_TIME_USAGE_PCT = 2.0
@@ -22,6 +21,7 @@ class Stack < Worker
         attr_reader \
           :recorder,
           :max_frames,
+          :trace_identifiers_helper,
           :ignore_thread,
           :max_time_usage_pct,
           :thread_api
@@ -29,6 +29,7 @@ class Stack < Worker
         def initialize(
           recorder,
           max_frames:,
+          trace_identifiers_helper:, # Usually an instance of Datadog::Profiling::TraceIdentifiers::Helper
           ignore_thread: nil,
           max_time_usage_pct: DEFAULT_MAX_TIME_USAGE_PCT,
           thread_api: Thread,
@@ -38,6 +39,7 @@ def initialize(
         )
           @recorder = recorder
           @max_frames = max_frames
+          @trace_identifiers_helper = trace_identifiers_helper
           @ignore_thread = ignore_thread
           @max_time_usage_pct = max_time_usage_pct
           @thread_api = thread_api
@@ -123,7 +125,7 @@ def collect_thread_event(thread, wall_time_interval_ns)
           locations = convert_backtrace_locations(locations)
 
           thread_id = thread.respond_to?(:pthread_thread_id) ? thread.pthread_thread_id : thread.object_id
-          trace_id, span_id = get_trace_identifiers(thread)
+          trace_id, span_id = trace_identifiers_helper.trace_identifiers_for(thread)
           cpu_time = get_cpu_time_interval!(thread)
 
           Events::StackSample.new(
@@ -162,14 +164,6 @@ def get_cpu_time_interval!(thread)
           interval
         end
 
-        def get_trace_identifiers(thread)
-          return unless thread.is_a?(::Thread)
-          return unless Datadog.respond_to?(:tracer) && Datadog.tracer.respond_to?(:active_correlation)
-
-          identifier = Datadog.tracer.active_correlation(thread)
-          [identifier.trace_id, identifier.span_id]
-        end
-
         def compute_wait_time(used_time)
           # We took used_time to get the last sample.
           #
@@ -256,7 +250,6 @@ def reset_cpu_time_tracking
           end
         end
       end
-      # rubocop:enable Metrics/ClassLength
     end
   end
 end
diff --git a/lib/ddtrace/profiling/ext/opentelemetry_trace_linking.rb b/lib/ddtrace/profiling/ext/opentelemetry_trace_linking.rb
new file mode 100644
index 00000000000..8e1edab64a4
--- /dev/null
+++ b/lib/ddtrace/profiling/ext/opentelemetry_trace_linking.rb
@@ -0,0 +1,40 @@
+module Datadog
+  module Profiling
+    module Ext
+      # Provides an OpenTelemetry-compliant SpanProcessor that enables OpenTelemetry traces to be linked with profiles.
+      #
+      # DEVELOPMENT NOTES:
+      # * Unlike most of the rest of the Profiler, this class is directly referenced in the docs and is
+      # expected to be instantiated by library users.
+      # * It MUST have no dependency on the rest of Profiler, so that it can be safely used even when Profiler is
+      # disabled or not available.
+      # * It MUST not rely on OpenTelemetry being available at all **prior to being instanced**. E.g. this class
+      # can be loaded even if none of the OpenTelemetry gems are available.
+      # * The expected API is documented at
+      # <https://github.com/open-telemetry/opentelemetry-specification/blob/0cb45c779a0b8a78d669aaf61c1b39ffab7dc0ae/specification/trace/sdk.md#interface-definition>
+      # and
+      # <https://github.com/open-telemetry/opentelemetry-ruby/blob/bef61b5ae4493f5ac8a3da7d843a5ff79f15f715/sdk/lib/opentelemetry/sdk/trace/span_processor.rb>
+      class OpenTelemetryTraceLinking
+        # https://github.com/open-telemetry/opentelemetry-ruby/blob/bef61b5ae4493f5ac8a3da7d843a5ff79f15f715/sdk/lib/opentelemetry/sdk/trace/export.rb#L16
+        SUCCESS = 0
+        private_constant :SUCCESS
+
+        def on_start(span, _parent_context)
+          span.set_attribute(Datadog::Ext::Runtime::TAG_ID, Datadog::Runtime::Identity.id)
+        end
+
+        def on_finish(*_)
+          # Nothing to do
+        end
+
+        def force_flush(**_)
+          SUCCESS
+        end
+
+        def shutdown(**_)
+          SUCCESS
+        end
+      end
+    end
+  end
+end
diff --git a/lib/ddtrace/profiling/trace_identifiers/ddtrace.rb b/lib/ddtrace/profiling/trace_identifiers/ddtrace.rb
new file mode 100644
index 00000000000..258a1cdf71a
--- /dev/null
+++ b/lib/ddtrace/profiling/trace_identifiers/ddtrace.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Datadog
+  module Profiling
+    module TraceIdentifiers
+      # Used by Datadog::Profiling::TraceIdentifiers::Helper to get the trace identifiers (trace id and span id) for a
+      # given thread, if there is an active trace for that thread in Datadog.tracer.
+      class Ddtrace
+        def initialize(tracer: nil)
+          @tracer = (tracer if tracer.respond_to?(:active_correlation))
+        end
+
+        def trace_identifiers_for(thread)
+          return unless @tracer
+
+          correlation = @tracer.active_correlation(thread)
+          trace_id = correlation.trace_id
+          span_id = correlation.span_id
+
+          [trace_id, span_id] if trace_id && trace_id != 0 && span_id && span_id != 0
+        end
+      end
+    end
+  end
+end
diff --git a/lib/ddtrace/profiling/trace_identifiers/helper.rb b/lib/ddtrace/profiling/trace_identifiers/helper.rb
new file mode 100644
index 00000000000..5a3245364c8
--- /dev/null
+++ b/lib/ddtrace/profiling/trace_identifiers/helper.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'ddtrace/profiling/trace_identifiers/ddtrace'
+require 'ddtrace/profiling/trace_identifiers/opentelemetry'
+
+module Datadog
+  module Profiling
+    module TraceIdentifiers
+      # Helper used to retrieve the trace identifiers (trace id and span id) for a given thread,
+      # if there is an active trace for that thread for the supported tracing APIs.
+      #
+      # This data is used to connect profiles to the traces -- samples in a profile will be tagged with this data and
+      # the profile can be filtered down to look at only the samples for a given trace.
+      class Helper
+        DEFAULT_SUPPORTED_APIS = [
+          ::Datadog::Profiling::TraceIdentifiers::Ddtrace,
+          ::Datadog::Profiling::TraceIdentifiers::OpenTelemetry
+        ].freeze
+        private_constant :DEFAULT_SUPPORTED_APIS
+
+        def initialize(tracer:, supported_apis: DEFAULT_SUPPORTED_APIS.map { |api| api.new(tracer: tracer) })
+          @supported_apis = supported_apis
+        end
+
+        def trace_identifiers_for(thread)
+          @supported_apis.each do |api|
+            trace_identifiers = api.trace_identifiers_for(thread)
+            return trace_identifiers unless trace_identifiers.nil?
+          end
+
+          nil
+        end
+      end
+    end
+  end
+end
diff --git a/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb b/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb
new file mode 100644
index 00000000000..c6f1d40e1ae
--- /dev/null
+++ b/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb
@@ -0,0 +1,107 @@
+# frozen_string_literal: true
+
+require 'ddtrace/utils/only_once'
+
+module Datadog
+  module Profiling
+    module TraceIdentifiers
+      # Used by Datadog::Profiling::TraceIdentifiers::Helper to get the trace identifiers (trace id and span id) for a
+      # given thread, if there is an active trace for that thread in the OpenTelemetry library.
+      #
+      # This class MUST be safe to instantiate and call even when the opentelemetry-api library is not installed.
+      class OpenTelemetry
+        SUPPORTED_VERSIONS = Gem::Requirement.new('>= 0.17.0')
+        private_constant :SUPPORTED_VERSIONS
+
+        UNSUPPORTED_VERSION_ONLY_ONCE = Datadog::Utils::OnlyOnce.new
+        private_constant :UNSUPPORTED_VERSION_ONLY_ONCE
+
+        def initialize(**_)
+          @available = false
+          @checked_version = false
+          @current_context_key = nil
+        end
+
+        def trace_identifiers_for(thread)
+          return unless available?
+
+          current_context = Array(thread[@current_context_key]).last # <= 1.0.0.rc1 single value; > 1.0.0.rc1 array
+          return unless current_context
+
+          span = ::OpenTelemetry::Trace.current_span(current_context)
+
+          if span && span != ::OpenTelemetry::Trace::Span::INVALID
+            context = span.context
+            [
+              binary_8_byte_string_to_i(trace_id_to_datadog(context.trace_id)),
+              binary_8_byte_string_to_i(context.span_id)
+            ]
+          end
+        end
+
+        private
+
+        def available?
+          return false unless defined?(::OpenTelemetry)
+
+          unless @checked_version
+            # Because the profiler can start quite early in the application boot process, it's possible for us to
+            # observe the OpenTelemetry module, but still be in a situation where the full opentelemetry gem has not
+            # finished being require'd.
+            #
+            # To solve this, we use a require which forces a synchronization point -- this require will not return
+            # until the gem is fully loaded.
+            require 'opentelemetry-api'
+            @available = supported?
+            @checked_version = true
+          end
+
+          @available
+        end
+
+        def binary_8_byte_string_to_i(string)
+          string.unpack1('Q>')
+        end
+
+        def trace_id_to_datadog(trace_id)
+          # Datadog converts opentelemetry 16 byte / 128 bit ids to 8 byte / 64 bit ids by dropping the leading 8 bytes,
+          # see also
+          # * https://github.com/DataDog/dd-trace-rb/blob/e63e65f19887d011cd957f7e58361f4af0df2050/lib/ddtrace/distributed_tracing/headers/helpers.rb#L28-L31
+          # * https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/9c7c329f0877f72befb36c61c47899d5a4525037/exporter/datadogexporter/translate_traces.go#L469
+          # * https://github.com/open-telemetry/opentelemetry-specification/issues/525
+          trace_id[8..16]
+        end
+
+        def supported?
+          unless defined?(::OpenTelemetry::VERSION) &&
+                 SUPPORTED_VERSIONS.satisfied_by?(Gem::Version.new(::OpenTelemetry::VERSION))
+            UNSUPPORTED_VERSION_ONLY_ONCE.run do
+              Datadog.logger.warn(
+                'Profiler: Incompatible version of opentelemetry-api detected; ' \
+                "ensure you have opentelemetry-api #{SUPPORTED_VERSIONS} by adding " \
+                "`gem 'opentelemetry-api', '#{SUPPORTED_VERSIONS}'` to your Gemfile or gems.rb file. " \
+                'Linking of OpenTelemetry traces to profiles will not be available. '
+              )
+            end
+
+            return false
+          end
+
+          key = retrieve_current_context_key
+          return false unless key
+
+          @current_context_key = key
+          true
+        end
+
+        def retrieve_current_context_key
+          if defined?(::OpenTelemetry::Context::KEY) # <= 1.0.0.rc1
+            ::OpenTelemetry::Context::KEY
+          elsif ::OpenTelemetry::Context.const_defined?(:STACK_KEY)
+            ::OpenTelemetry::Context.const_get(:STACK_KEY)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/spec/ddtrace/configuration/components_spec.rb b/spec/ddtrace/configuration/components_spec.rb
index f24c2b8f71a..6b1d57973a8 100644
--- a/spec/ddtrace/configuration/components_spec.rb
+++ b/spec/ddtrace/configuration/components_spec.rb
@@ -35,7 +35,7 @@
         .and_return(tracer)
 
       expect(described_class).to receive(:build_profiler)
-        .with(settings, instance_of(Datadog::Configuration::AgentSettingsResolver::AgentSettings))
+        .with(settings, instance_of(Datadog::Configuration::AgentSettingsResolver::AgentSettings), tracer)
         .and_return(profiler)
 
       expect(described_class).to receive(:build_runtime_metrics_worker)
@@ -666,8 +666,9 @@
   describe '::build_profiler' do
     let(:agent_settings) { Datadog::Configuration::AgentSettingsResolver.call(settings, logger: nil) }
     let(:profiler) { build_profiler }
+    let(:tracer) { instance_double(Datadog::Tracer) }
 
-    subject(:build_profiler) { described_class.build_profiler(settings, agent_settings) }
+    subject(:build_profiler) { described_class.build_profiler(settings, agent_settings, tracer) }
 
     context 'when profiling is not supported' do
       before { allow(Datadog::Profiling).to receive(:supported?).and_return(false) }
diff --git a/spec/ddtrace/profiling/collectors/stack_spec.rb b/spec/ddtrace/profiling/collectors/stack_spec.rb
index edb46076bb7..a7321e17387 100644
--- a/spec/ddtrace/profiling/collectors/stack_spec.rb
+++ b/spec/ddtrace/profiling/collectors/stack_spec.rb
@@ -2,18 +2,21 @@
 require 'ddtrace/profiling/spec_helper'
 
 require 'ddtrace/profiling/collectors/stack'
+require 'ddtrace/profiling/trace_identifiers/helper'
 require 'ddtrace/profiling/recorder'
 
 RSpec.describe Datadog::Profiling::Collectors::Stack do
   subject(:collector) { described_class.new(recorder, **options) }
 
   let(:recorder) { instance_double(Datadog::Profiling::Recorder) }
-  let(:options) { { max_frames: 50 } }
+  let(:options) { { max_frames: 50, trace_identifiers_helper: trace_identifiers_helper } }
 
   let(:buffer) { instance_double(Datadog::Profiling::Buffer) }
   let(:string_table) { Datadog::Utils::StringTable.new }
   let(:backtrace_location_cache) { Datadog::Utils::ObjectSet.new }
-  let(:correlation) { instance_double(Datadog::Correlation::Identifier, trace_id: 0, span_id: 0) }
+  let(:trace_identifiers_helper) do
+    instance_double(Datadog::Profiling::TraceIdentifiers::Helper, trace_identifiers_for: nil)
+  end
 
   before do
     allow(recorder)
@@ -29,12 +32,6 @@
       .to receive(:cache)
       .with(:backtrace_locations)
       .and_return(backtrace_location_cache)
-
-    if Datadog.respond_to?(:tracer)
-      allow(Datadog.tracer)
-        .to receive(:active_correlation)
-        .and_return(correlation)
-    end
   end
 
   describe '::new' do
@@ -285,9 +282,39 @@
       let(:base_label) { double('base_label') }
       let(:lineno) { double('lineno') }
       let(:path) { double('path') }
+      let(:trace_identifiers) { nil }
 
       let(:backtrace_size) { collector.max_frames }
 
+      before do
+        expect(trace_identifiers_helper).to receive(:trace_identifiers_for).with(thread).and_return(trace_identifiers)
+      end
+
+      context 'and there is an active trace for the thread' do
+        let(:trace_identifiers) { [trace_id, span_id] }
+
+        let(:trace_id) { rand(1e12) }
+        let(:span_id) { rand(1e12) }
+
+        it 'builds an event including the trace id and span id' do
+          is_expected.to have_attributes(
+            trace_id: trace_id,
+            span_id: span_id
+          )
+        end
+      end
+
+      context 'and there is no active trace for the thread' do
+        let(:trace_identifiers) { nil }
+
+        it 'builds an event with nil trace id and span id' do
+          is_expected.to have_attributes(
+            trace_id: nil,
+            span_id: nil
+          )
+        end
+      end
+
       context 'and CPU timing is unavailable' do
         it 'builds an event without CPU time' do
           is_expected.to be_a_kind_of(Datadog::Profiling::Events::StackSample)
@@ -509,80 +536,6 @@
     end
   end
 
-  describe '#get_trace_identifiers' do
-    subject(:get_trace_identifiers) { collector.get_trace_identifiers(thread) }
-
-    let(:thread) { Thread.new {} }
-
-    after do
-      thread && thread.join
-    end
-
-    context 'given a non-thread' do
-      let(:thread) { nil }
-
-      it { is_expected.to be nil }
-    end
-
-    context 'when linking is unavailable' do
-      context 'because the tracer is unavailable' do
-        let(:datadog) { Module.new { const_set('Utils', Datadog::Utils) } }
-
-        before { stub_const('Datadog', datadog, transfer_nested_constant: true) }
-
-        it { is_expected.to be nil }
-      end
-
-      context 'because correlations are unavailable' do
-        let(:tracer) { instance_double(Datadog::Tracer) }
-
-        before { allow(Datadog).to receive(:tracer).and_return(tracer) }
-
-        it { is_expected.to be nil }
-      end
-    end
-
-    context 'when linking is available' do
-      context 'and the trace & span IDs are' do
-        context 'set' do
-          let(:correlation) do
-            instance_double(
-              Datadog::Correlation::Identifier,
-              trace_id: rand(1e12),
-              span_id: rand(1e12)
-            )
-          end
-
-          it { is_expected.to eq([correlation.trace_id, correlation.span_id]) }
-        end
-
-        context '0' do
-          let(:correlation) do
-            instance_double(
-              Datadog::Correlation::Identifier,
-              trace_id: 0,
-              span_id: 0
-            )
-          end
-
-          it { is_expected.to eq([0, 0]) }
-        end
-
-        context 'are nil' do
-          let(:correlation) do
-            instance_double(
-              Datadog::Correlation::Identifier,
-              trace_id: nil,
-              span_id: nil
-            )
-          end
-
-          it { is_expected.to eq([nil, nil]) }
-        end
-      end
-    end
-  end
-
   describe '#compute_wait_time' do
     subject(:compute_wait_time) { collector.compute_wait_time(used_time) }
 
diff --git a/spec/ddtrace/profiling/ext/opentelemetry_trace_linking_spec.rb b/spec/ddtrace/profiling/ext/opentelemetry_trace_linking_spec.rb
new file mode 100644
index 00000000000..554a6c0ba6e
--- /dev/null
+++ b/spec/ddtrace/profiling/ext/opentelemetry_trace_linking_spec.rb
@@ -0,0 +1,40 @@
+require 'ddtrace/profiling/ext/opentelemetry_trace_linking'
+
+RSpec.describe Datadog::Profiling::Ext::OpenTelemetryTraceLinking do
+  before(:all) do
+    skip 'opentelemetry-api not supported on Ruby < 2.5' if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.5.0')
+
+    require 'opentelemetry-api'
+  end
+
+  subject(:trace_linking) { described_class.new }
+
+  describe '#on_start' do
+    let(:span) { instance_double(OpenTelemetry::Trace::Span) }
+    let(:parent_context) { double('Context') } # rubocop:disable RSpec/VerifiedDoubles
+
+    it 'adds the runtime id as an attribute to a span' do
+      expect(span).to receive(:set_attribute).with(Datadog::Ext::Runtime::TAG_ID, Datadog::Runtime::Identity.id)
+
+      trace_linking.on_start(span, parent_context)
+    end
+  end
+
+  describe '#on_finish' do
+    it 'does nothing' do
+      trace_linking.on_finish(double('Span')) # rubocop:disable RSpec/VerifiedDoubles
+    end
+  end
+
+  describe '#force_flush' do
+    it do
+      expect(trace_linking.force_flush(timeout: double('Timeout'))).to be 0 # rubocop:disable RSpec/VerifiedDoubles
+    end
+  end
+
+  describe '#shutdown' do
+    it do
+      expect(trace_linking.shutdown(timeout: double('Timeout'))).to be 0 # rubocop:disable RSpec/VerifiedDoubles
+    end
+  end
+end
diff --git a/spec/ddtrace/profiling/integration_spec.rb b/spec/ddtrace/profiling/integration_spec.rb
index 7ce92bafc1d..44d8a2c43dd 100644
--- a/spec/ddtrace/profiling/integration_spec.rb
+++ b/spec/ddtrace/profiling/integration_spec.rb
@@ -15,6 +15,8 @@
     skip 'Profiling is not supported.' unless Datadog::Profiling.supported?
   end
 
+  let(:tracer) { instance_double(Datadog::Tracer) }
+
   shared_context 'StackSample events' do
     # NOTE: Please do not convert stack_one or stack_two to let, because
     # we want the method names on the resulting stacks to be stack_one or
@@ -55,7 +57,7 @@ def stack_two
     let(:collector) do
       Datadog::Profiling::Collectors::Stack.new(
         recorder,
-        enabled: true,
+        trace_identifiers_helper: Datadog::Profiling::TraceIdentifiers::Helper.new(tracer: tracer),
         max_frames: 400
       )
     end
@@ -121,10 +123,11 @@ def stack_two
           @current_span = span
           example.run
         end
-
         Datadog.tracer.shutdown!
       end
 
+      let(:tracer) { Datadog.tracer }
+
       before do
         expect(recorder)
           .to receive(:flush)
diff --git a/spec/ddtrace/profiling/trace_identifiers/ddtrace_spec.rb b/spec/ddtrace/profiling/trace_identifiers/ddtrace_spec.rb
new file mode 100644
index 00000000000..0db73a9d2da
--- /dev/null
+++ b/spec/ddtrace/profiling/trace_identifiers/ddtrace_spec.rb
@@ -0,0 +1,62 @@
+require 'ddtrace/profiling/trace_identifiers/ddtrace'
+
+require 'ddtrace/correlation'
+require 'ddtrace/tracer'
+
+RSpec.describe Datadog::Profiling::TraceIdentifiers::Ddtrace do
+  let(:thread) { instance_double(Thread) }
+  let(:tracer) { instance_double(Datadog::Tracer) }
+
+  subject(:datadog_trace_identifiers) { described_class.new(tracer: tracer) }
+
+  describe '#trace_identifiers_for' do
+    subject(:trace_identifiers_for) { datadog_trace_identifiers.trace_identifiers_for(thread) }
+
+    context 'when there is an active datadog trace for the thread' do
+      let(:trace_id) { rand(1e12) }
+      let(:span_id) { rand(1e12) }
+
+      before do
+        expect(tracer)
+          .to receive(:active_correlation)
+          .with(thread)
+          .and_return(Datadog::Correlation::Identifier.new(trace_id, span_id))
+      end
+
+      it 'returns the identifiers' do
+        trace_identifiers_for
+
+        expect(trace_identifiers_for).to eq [trace_id, span_id]
+      end
+    end
+
+    context 'when there is no active datadog trace for the thread' do
+      before do
+        expect(tracer)
+          .to receive(:active_correlation)
+          .with(thread)
+          .and_return(Datadog::Correlation::Identifier.new)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+
+    context 'when no tracer instance is available' do
+      let(:tracer) { nil }
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+
+    context 'when tracer does not support #active_correlation' do
+      let(:tracer) { double('Tracer') } # rubocop:disable RSpec/VerifiedDoubles
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+  end
+end
diff --git a/spec/ddtrace/profiling/trace_identifiers/helper_spec.rb b/spec/ddtrace/profiling/trace_identifiers/helper_spec.rb
new file mode 100644
index 00000000000..d5ee5be3621
--- /dev/null
+++ b/spec/ddtrace/profiling/trace_identifiers/helper_spec.rb
@@ -0,0 +1,60 @@
+require 'ddtrace/profiling/trace_identifiers/helper'
+require 'ddtrace/profiling/trace_identifiers/ddtrace'
+require 'ddtrace/profiling/trace_identifiers/opentelemetry'
+
+RSpec.describe Datadog::Profiling::TraceIdentifiers::Helper do
+  let(:thread) { instance_double(Thread) }
+  let(:api1) { instance_double(Datadog::Profiling::TraceIdentifiers::Ddtrace, 'api1') }
+  let(:api2) { instance_double(Datadog::Profiling::TraceIdentifiers::Ddtrace, 'api2') }
+
+  subject(:trace_identifiers_helper) { described_class.new(tracer: nil, supported_apis: [api1, api2]) }
+
+  describe '::DEFAULT_SUPPORTED_APIS' do
+    it 'contains the Datadog and OpenTelemetry trace identifiers' do
+      expect(described_class.const_get(:DEFAULT_SUPPORTED_APIS))
+        .to eq([::Datadog::Profiling::TraceIdentifiers::Ddtrace, ::Datadog::Profiling::TraceIdentifiers::OpenTelemetry])
+    end
+  end
+
+  describe '#trace_identifiers_for' do
+    subject(:trace_identifiers_for) { trace_identifiers_helper.trace_identifiers_for(thread) }
+
+    context 'when the first api provider returns trace identifiers' do
+      before do
+        allow(api1).to receive(:trace_identifiers_for).and_return([:api1_trace_id, :api1_span_id])
+      end
+
+      it 'returns the first api provider trace identifiers' do
+        expect(trace_identifiers_for).to eq [:api1_trace_id, :api1_span_id]
+      end
+
+      it 'does not attempt to read trace identifiers from the second api provider' do
+        expect(api2).to_not receive(:trace_identifiers_for)
+
+        trace_identifiers_for
+      end
+    end
+
+    context 'when the first api provider does not return trace identifiers, but the second one does' do
+      before do
+        allow(api1).to receive(:trace_identifiers_for).and_return(nil)
+        allow(api2).to receive(:trace_identifiers_for).and_return([:api2_trace_id, :api2_span_id])
+      end
+
+      it 'returns the second api provider trace identifiers' do
+        expect(trace_identifiers_for).to eq [:api2_trace_id, :api2_span_id]
+      end
+    end
+
+    context 'when no api providers return trace identifiers' do
+      before do
+        allow(api1).to receive(:trace_identifiers_for).and_return(nil)
+        allow(api2).to receive(:trace_identifiers_for).and_return(nil)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+  end
+end
diff --git a/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb b/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb
new file mode 100644
index 00000000000..354b766b07a
--- /dev/null
+++ b/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb
@@ -0,0 +1,160 @@
+require 'ddtrace/profiling/trace_identifiers/opentelemetry'
+
+RSpec.describe Datadog::Profiling::TraceIdentifiers::OpenTelemetry do
+  before(:all) do
+    skip 'opentelemetry-api not supported on Ruby < 2.5' if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.5.0')
+
+    require 'opentelemetry-sdk'
+
+    OpenTelemetry::SDK.configure
+  end
+
+  let(:thread) { Thread.new { sleep } }
+
+  subject(:opentelemetry_trace_identifiers) { described_class.new }
+
+  after do
+    thread.kill
+    thread.join
+  end
+
+  describe '#trace_identifiers_for' do
+    subject(:trace_identifiers_for) { opentelemetry_trace_identifiers.trace_identifiers_for(thread) }
+
+    context 'when there is an active opentelemetry trace for the thread' do
+      let!(:thread) do
+        Thread.new(span_queue) do |span_queue|
+          OpenTelemetry.tracer_provider.tracer('ddtrace_testing', '1.2.3').in_span('test_span') do |span|
+            span_queue << span
+            sleep
+          end
+        end
+      end
+      let(:span_queue) { Queue.new }
+
+      it 'returns the identifiers as a pair of 64 bit integers' do
+        span_context = span_queue.pop.context
+
+        expect(trace_identifiers_for)
+          .to eq [span_context.hex_trace_id[16..-1].to_i(16), span_context.hex_span_id.to_i(16)]
+      end
+    end
+
+    context 'when there is no available context for the thread' do
+      before do
+        expect(thread).to receive(:[]).and_return(nil)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+
+      it 'does not try to invoke the opentelemetry api' do
+        expect(OpenTelemetry::Trace).to_not receive(:current_span)
+
+        trace_identifiers_for
+      end
+    end
+
+    context 'when context for the thread is an array of values' do
+      before do
+        allow(thread).to receive(:[]).and_return([:context1, :context2])
+      end
+
+      it 'retrieves the span from the last context' do
+        expect(OpenTelemetry::Trace).to receive(:current_span).with(:context2)
+
+        trace_identifiers_for
+      end
+    end
+
+    context 'when there there is no opentelemetry span (nil) for the thread' do
+      before do
+        allow(thread).to receive(:[]).and_return(:dummy_context)
+        expect(OpenTelemetry::Trace)
+          .to receive(:current_span).with(:dummy_context).and_return(nil)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+
+    context 'when there there is no opentelemetry span (invalid) for the thread' do
+      before do
+        allow(thread).to receive(:[]).and_return(:dummy_context)
+        expect(OpenTelemetry::Trace)
+          .to receive(:current_span).with(:dummy_context).and_return(OpenTelemetry::Trace::Span::INVALID)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+    end
+
+    context 'when an unsupported version of the opentelemetry-api gem is loaded' do
+      before do
+        allow(Datadog.logger).to receive(:warn)
+        stub_const('::OpenTelemetry::VERSION', '0.16.0')
+        described_class.const_get('UNSUPPORTED_VERSION_ONLY_ONCE').send(:reset_ran_once_state_for_tests)
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+
+      it 'does not try to invoke the opentelemetry api' do
+        expect(OpenTelemetry::Trace).to_not receive(:current_span)
+
+        trace_identifiers_for
+      end
+
+      it 'logs a warning' do
+        expect(Datadog.logger).to receive(:warn).with(/Incompatible version of opentelemetry-api/)
+
+        trace_identifiers_for
+      end
+    end
+
+    context 'when opentelemetry-api gem is not available' do
+      let!(:original_opentelemetry) { OpenTelemetry }
+
+      before do
+        hide_const('::OpenTelemetry')
+      end
+
+      it do
+        expect(trace_identifiers_for).to be nil
+      end
+
+      context 'but becomes available after the first call' do
+        let!(:thread) do
+          Thread.new(span_queue, start_trace_queue) do |span_queue, start_trace_queue|
+            start_trace_queue.pop # Wait until we're asked to start the trace
+
+            OpenTelemetry.tracer_provider.tracer('ddtrace_testing', '1.2.3').in_span('test_span') do |span|
+              span_queue << span
+              sleep
+            end
+          end
+        end
+        let(:span_queue) { Queue.new }
+        let(:start_trace_queue) { Queue.new }
+
+        it 'returns the trace identifiers' do
+          # first call has no identifiers
+          expect(trace_identifiers_for).to be nil
+
+          # simulate OpenTelemetry becoming available
+          stub_const('::OpenTelemetry', original_opentelemetry)
+
+          # allow and wait for trace to start
+          start_trace_queue << true
+          span_queue.pop.context
+
+          expect(opentelemetry_trace_identifiers.trace_identifiers_for(thread)).to_not be nil
+        end
+      end
+    end
+  end
+end