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/Gemfile b/Gemfile
index b7ad45061e4..0cc1e2ce361 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,6 @@ end
 # Optional extensions
 # TODO: Move this to Appraisals?
 gem 'dogstatsd-ruby', '< 5.0'
-gem 'opentelemetry-api', '>= 0.17.0' if RUBY_VERSION >= '2.5.0'
 gem 'opentracing', '>= 0.4.1'
 
 # Profiler optional dependencies
diff --git a/Rakefile b/Rakefile
index 1bd6dbaf1b8..21fc28dce3e 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/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/profiling/trace_identifiers/opentelemetry.rb b/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb
index 0eace9ad9c0..89f738c8bb0 100644
--- a/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb
+++ b/lib/ddtrace/profiling/trace_identifiers/opentelemetry.rb
@@ -19,12 +19,16 @@ class OpenTelemetry
         def initialize
           @available = false
           @checked_version = false
+          @current_context_key = nil
         end
 
         def trace_identifiers_for(thread)
           return unless available?
 
-          span = ::OpenTelemetry::Trace.current_span(thread[::OpenTelemetry::Context::KEY])
+          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
@@ -69,10 +73,8 @@ def trace_id_to_datadog(trace_id)
         end
 
         def supported?
-          if defined?(::OpenTelemetry::VERSION) &&
-             SUPPORTED_VERSIONS.satisfied_by?(Gem::Version.new(::OpenTelemetry::VERSION))
-            true
-          else
+          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; ' \
@@ -82,7 +84,21 @@ def supported?
               )
             end
 
-            false
+            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
diff --git a/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb b/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb
index 8ccab2bc78b..354b766b07a 100644
--- a/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb
+++ b/spec/ddtrace/profiling/trace_identifiers/opentelemetry_spec.rb
@@ -4,7 +4,9 @@
   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'
+    require 'opentelemetry-sdk'
+
+    OpenTelemetry::SDK.configure
   end
 
   let(:thread) { Thread.new { sleep } }
@@ -38,9 +40,39 @@
       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(OpenTelemetry::Trace).to receive(:current_span).and_return(nil)
+        allow(thread).to receive(:[]).and_return(:dummy_context)
+        expect(OpenTelemetry::Trace)
+          .to receive(:current_span).with(:dummy_context).and_return(nil)
       end
 
       it do
@@ -50,7 +82,9 @@
 
     context 'when there there is no opentelemetry span (invalid) for the thread' do
       before do
-        allow(OpenTelemetry::Trace).to receive(:current_span).and_return(OpenTelemetry::Trace::Span::INVALID)
+        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
@@ -65,6 +99,10 @@
         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)
 
@@ -79,7 +117,7 @@
     end
 
     context 'when opentelemetry-api gem is not available' do
-      let!(:original_opentelemetry) { ::OpenTelemetry }
+      let!(:original_opentelemetry) { OpenTelemetry }
 
       before do
         hide_const('::OpenTelemetry')