Remove telemetry registry, fix broken log, update tests (#207)

* Remove telemetry registry, fix broken log, update tests

* Fix rebar and otp versions

* Specific rebar3

* Roll back dialyxir

.github/elixir-test-matrix.json

@@ -13,7 +13,7 @@
     "1.11.4"
   ],
   "rebar3_version": [
-    "3.20"
+    "3.20.0"
   ],
   "os": [
     "ubuntu-20.04"

.github/erlang-test-matrix.json

@@ -1,5 +1,5 @@
 {
-  "otp_version": ["26.0.2", "25.3.5.2", "24.3.4.13", "23.3.4.19"],
+  "otp_version": ["26.0.2", "25.3.2.6", "24.3.4.13", "23.3.4.19"],
-  "rebar3_version": ["3.20"],
+  "rebar3_version": ["3.20.0"],
   "os": ["ubuntu-20.04"]
 }

utilities/opentelemetry_telemetry/_checkouts/test_app/.gitignore

@@ -1,20 +0,0 @@
-.rebar3
-_*
-.eunit
-*.o
-*.beam
-*.plt
-*.swp
-*.swo
-.erlang.cookie
-ebin
-log
-erl_crash.dump
-.rebar
-logs
-_build
-.idea
-*.iml
-rebar3.crashdump
-*~
-!_checkouts

utilities/opentelemetry_telemetry/_checkouts/test_app/LICENSE

@@ -1,191 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   Copyright 2020, Bryan Naegele <bryan@fourthtime.com>.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-

utilities/opentelemetry_telemetry/_checkouts/test_app/README.md

@@ -1,9 +0,0 @@
-test_app
-=====
-
-An OTP application
-
-Build
------
-
-    $ rebar3 compile

utilities/opentelemetry_telemetry/_checkouts/test_app/rebar.config

@@ -1,33 +0,0 @@
-{erl_opts, [debug_info]}.
-{deps, [
-    {test_child_app, "~> 0.1"}
-]}.
-
-{profiles, [
-    {test, [{erl_opts, [nowarn_export_all]},
-            {deps, [
-                {test_child_app, "~> 0.1"},
-                {telemetry, "~> 1.0"}
-            ]},
-            %% create junit xml for circleci
-            {ct_opts, [{ct_hooks, [cth_surefire]}]},
-            {cover_enabled, true},
-            {cover_opts, [verbose]},
-            {paths, ["src", "test/support"]},
-            %% convert to data codecov understands
-            {plugins, [covertool]},
-            {covertool, [{coverdata_files, ["ct.coverdata"]}]}
-    ]},
-    {docs, [{edoc_opts, [{preprocess, true},
-                         {title, "Test App"}]}
-    ]}
-]}.
-
-{shell, [
-  % {config, "config/sys.config"},
-    {apps, [test_app]}
-]}.
-
-%% take out warnings for unused exported functions
-{xref_checks,[undefined_function_calls, undefined_functions, locals_not_used,
-              deprecated_function_calls, deprecated_functions]}.

utilities/opentelemetry_telemetry/_checkouts/test_app/rebar.lock

@@ -1 +0,0 @@
-[].

utilities/opentelemetry_telemetry/_checkouts/test_app/src/test_app.app.src

@@ -1,16 +0,0 @@
-{application, test_app,
- [{description, "An OTP application"},
-  {vsn, "0.1.0"},
-  {registered, []},
-  {mod, {test_app_app, []}},
-  {applications,
-   [kernel,
-    stdlib,
-    test_child_app
-   ]},
-  {env,[]},
-  {modules, []},
-
-  {licenses, ["Apache 2.0"]},
-  {links, []}
- ]}.

utilities/opentelemetry_telemetry/_checkouts/test_app/src/test_app.erl

@@ -1,82 +0,0 @@
--module(test_app).
-
--export([handler/1]).
-
--telemetry_event #{
-                  event => [test_app, handler, start],
-                  description => <<"Emitted at the start of the handler">>,
-                  measurements => <<"#{system_time => non_neg_integer()}">>,
-                  metadata => <<"#{}">>
-                 }.
--telemetry_event #{
-                   event => [test_app, handler, stop],
-                   description => <<"Emitted at the end of the handler">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
--telemetry_event #{
-                   event => [test_app, handler, exception],
-                   description => <<"The handler raised an exception">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{kind => atom(), reason => atom(), stacktrace => term()}">>
-                  }.
-
--telemetry_event #{
-                  event => [test_app, nested_span, start],
-                  description => <<"Emitted at the start of the handler">>,
-                  measurements => <<"#{system_time => non_neg_integer()}">>,
-                  metadata => <<"#{}">>
-                 }.
--telemetry_event #{
-                   event => [test_app, nested_span, stop],
-                   description => <<"Emitted at the end of the handler">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
--telemetry_event #{
-                   event => [test_app, nested_span, exception],
-                   description => <<"The handler raised an exception">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{kind => atom(), reason => atom(), stacktrace => term()}">>
-                  }.
-
-
--telemetry_event #{
-                   event => [test_app, only, stop],
-                   description => <<"The handler raised an exception">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{kind => atom(), reason => atom(), stacktrace => term()}">>
-                  }.
-
--telemetry_event #{
-                  event => [test_app, cache, miss],
-                  description => <<"Emitted at the start of the handler">>,
-                  measurements => <<"#{system_time => non_neg_integer()}">>,
-                  metadata => <<"#{}">>
-                 }.
--telemetry_event #{
-                   event => [test_app, cache, hit],
-                   description => <<"Emitted at the end of the handler">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
-
-handler(Args) ->
-    _ = telemetry:span(
-          [test_app, handler],
-          #{},
-          fun() ->
-                  case Args of
-                      raise_exception ->
-                          binary_to_list("heh, already a list");
-                      _ -> {nested_span(), #{}}
-                  end
-          end).
-
-nested_span() ->
-    _ = telemetry:span(
-          [test_app, nested_span],
-          #{},
-          fun() ->
-              {ok, #{}}
-          end).

utilities/opentelemetry_telemetry/_checkouts/test_app/src/test_app_app.erl

@@ -1,26 +0,0 @@
-%%%-------------------------------------------------------------------
-%% @doc test_app public API
-%% @end
-%%%-------------------------------------------------------------------
-
--module(test_app_app).
-
--behaviour(application).
-
-%% Application callbacks
--export([start/2, stop/1]).
-
-%%====================================================================
-%% API
-%%====================================================================
-
-start(_StartType, _StartArgs) ->
-    test_app_sup:start_link().
-
-%%--------------------------------------------------------------------
-stop(_State) ->
-    ok.
-
-%%====================================================================
-%% Internal functions
-%%====================================================================

utilities/opentelemetry_telemetry/_checkouts/test_app/src/test_app_sup.erl

@@ -1,38 +0,0 @@
-%%%-------------------------------------------------------------------
-%% @doc test_app top level supervisor.
-%% @end
-%%%-------------------------------------------------------------------
-
--module(test_app_sup).
-
--behaviour(supervisor).
-
-%% API
--export([start_link/0]).
-
-%% Supervisor callbacks
--export([init/1]).
-
--define(SERVER, ?MODULE).
-
-%%====================================================================
-%% API functions
-%%====================================================================
-
-start_link() ->
-    supervisor:start_link({local, ?SERVER}, ?MODULE, []).
-
-%%====================================================================
-%% Supervisor callbacks
-%%====================================================================
-
-%% Child :: #{id => Id, start => {M, F, A}}
-%% Optional keys are restart, shutdown, type, modules.
-%% Before OTP 18 tuples must be used to specify a child. e.g.
-%% Child :: {Id,StartFunc,Restart,Shutdown,Type,Modules}
-init([]) ->
-    {ok, {{one_for_all, 0, 1}, []}}.
-
-%%====================================================================
-%% Internal functions
-%%====================================================================

utilities/opentelemetry_telemetry/_checkouts/test_child_app/.gitignore

@@ -1,19 +0,0 @@
-.rebar3
-_*
-.eunit
-*.o
-*.beam
-*.plt
-*.swp
-*.swo
-.erlang.cookie
-ebin
-log
-erl_crash.dump
-.rebar
-logs
-_build
-.idea
-*.iml
-rebar3.crashdump
-*~

utilities/opentelemetry_telemetry/_checkouts/test_child_app/LICENSE

@@ -1,191 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   Copyright 2020, Bryan Naegele <bryan@fourthtime.com>.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-

utilities/opentelemetry_telemetry/_checkouts/test_child_app/README.md

@@ -1,9 +0,0 @@
-test_child_app
-=====
-
-An OTP application
-
-Build
------
-
-    $ rebar3 compile

utilities/opentelemetry_telemetry/_checkouts/test_child_app/rebar.config

@@ -1,7 +0,0 @@
-{erl_opts, [debug_info]}.
-{deps, []}.
-
-{shell, [
-  % {config, "config/sys.config"},
-    {apps, [test_child_app]}
-]}.

utilities/opentelemetry_telemetry/_checkouts/test_child_app/rebar.lock

@@ -1 +0,0 @@
-[].

utilities/opentelemetry_telemetry/_checkouts/test_child_app/src/test_child_app.app.src

@@ -1,15 +0,0 @@
-{application, test_child_app,
- [{description, "An OTP application"},
-  {vsn, "0.1.0"},
-  {registered, []},
-  {mod, {test_child_app_app, []}},
-  {applications,
-   [kernel,
-    stdlib
-   ]},
-  {env,[]},
-  {modules, []},
-
-  {licenses, ["Apache 2.0"]},
-  {links, []}
- ]}.

utilities/opentelemetry_telemetry/_checkouts/test_child_app/src/test_child_app.erl

@@ -1,27 +0,0 @@
--module(test_child_app).
-
--telemetry_event #{
-                   event => [test_child_app, extra_long, start],
-                   description => <<"Emitted at the start of the handler">>,
-                   measurements => <<"#{system_time => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
--telemetry_event #{
-                   event => [test_child_app, extra_long, stop],
-                   description => <<"Emitted at the end of the handler">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
-
--telemetry_event #{
-                   event => [test_child_app, cache, hit],
-                   description => <<"Emitted at the start of the handler">>,
-                   measurements => <<"#{system_time => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.
--telemetry_event #{
-                   event => [test_child_app, cache, miss],
-                   description => <<"Emitted at the end of the handler">>,
-                   measurements => <<"#{duration => non_neg_integer()}">>,
-                   metadata => <<"#{}">>
-                  }.

utilities/opentelemetry_telemetry/_checkouts/test_child_app/src/test_child_app_app.erl

@@ -1,26 +0,0 @@
-%%%-------------------------------------------------------------------
-%% @doc test_child_app public API
-%% @end
-%%%-------------------------------------------------------------------
-
--module(test_child_app_app).
-
--behaviour(application).
-
-%% Application callbacks
--export([start/2, stop/1]).
-
-%%====================================================================
-%% API
-%%====================================================================
-
-start(_StartType, _StartArgs) ->
-    test_child_app_sup:start_link().
-
-%%--------------------------------------------------------------------
-stop(_State) ->
-    ok.
-
-%%====================================================================
-%% Internal functions
-%%====================================================================

utilities/opentelemetry_telemetry/_checkouts/test_child_app/src/test_child_app_sup.erl

@@ -1,38 +0,0 @@
-%%%-------------------------------------------------------------------
-%% @doc test_child_app top level supervisor.
-%% @end
-%%%-------------------------------------------------------------------
-
--module(test_child_app_sup).
-
--behaviour(supervisor).
-
-%% API
--export([start_link/0]).
-
-%% Supervisor callbacks
--export([init/1]).
-
--define(SERVER, ?MODULE).
-
-%%====================================================================
-%% API functions
-%%====================================================================
-
-start_link() ->
-    supervisor:start_link({local, ?SERVER}, ?MODULE, []).
-
-%%====================================================================
-%% Supervisor callbacks
-%%====================================================================
-
-%% Child :: #{id => Id, start => {M, F, A}}
-%% Optional keys are restart, shutdown, type, modules.
-%% Before OTP 18 tuples must be used to specify a child. e.g.
-%% Child :: {Id,StartFunc,Restart,Shutdown,Type,Modules}
-init([]) ->
-    {ok, {{one_for_all, 0, 1}, []}}.
-
-%%====================================================================
-%% Internal functions
-%%====================================================================

utilities/opentelemetry_telemetry/mix.exs

@@ -44,7 +44,7 @@ defmodule OpentelemetryTelemetry.MixProject do
       dep when is_atom(dep) -> {dep, ">= 0.0.0"}
     end)
     |> Enum.concat([
-      {:dialyxir, "~> 1.1", only: [:dev, :test], runtime: false},
+      {:dialyxir, "~> 1.3.0", only: [:dev, :test], runtime: false},
       {:ex_doc, "~> 0.29", only: :dev, runtime: false},
       {:opentelemetry, "~> 1.0", only: [:dev, :test]},
       {:opentelemetry_exporter, "~> 1.0", only: [:dev, :test]}

utilities/opentelemetry_telemetry/mix.lock

@@ -3,25 +3,25 @@
   "chatterbox": {:hex, :ts_chatterbox, "0.13.0", "6f059d97bcaa758b8ea6fffe2b3b81362bd06b639d3ea2bb088335511d691ebf", [:rebar3], [{:hpack, "~>0.2.3", [hex: :hpack_erl, repo: "hexpm", optional: false]}], "hexpm", "b93d19104d86af0b3f2566c4cba2a57d2e06d103728246ba1ac6c3c0ff010aa7"},
   "cmark": {:hex, :cmark, "0.9.0", "c0e673019e125eb5878b6c5610af919d737e881369e0cd2247c89e767f42c029", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "0cfb4d8888bc801f2decc23eee3b3b756b682dff976d15a46861a596fdb00079"},
   "ctx": {:hex, :ctx, "0.6.0", "8ff88b70e6400c4df90142e7f130625b82086077a45364a78d208ed3ed53c7fe", [:rebar3], [], "hexpm", "a14ed2d1b67723dbebbe423b28d7615eb0bdcba6ff28f2d1f1b0a7e1d4aa5fc2"},
-  "dialyxir": {:hex, :dialyxir, "1.2.0", "58344b3e87c2e7095304c81a9ae65cb68b613e28340690dfe1a5597fd08dec37", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "61072136427a851674cab81762be4dbeae7679f85b1272b6d25c3a839aff8463"},
+  "dialyxir": {:hex, :dialyxir, "1.3.0", "fd1672f0922b7648ff9ce7b1b26fcf0ef56dda964a459892ad15f6b4410b5284", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "00b2a4bcd6aa8db9dcb0b38c1225b7277dca9bc370b6438715667071a304696f"},
   "earmark": {:hex, :earmark, "1.4.5", "62ffd3bd7722fb7a7b1ecd2419ea0b458c356e7168c1f5d65caf09b4fbdd13c8", [:mix], [], "hexpm", "b7d0e6263d83dc27141a523467799a685965bf8b13b6743413f19a7079843f4f"},
-  "earmark_parser": {:hex, :earmark_parser, "1.4.29", "149d50dcb3a93d9f3d6f3ecf18c918fb5a2d3c001b5d3305c926cddfbd33355b", [:mix], [], "hexpm", "4902af1b3eb139016aed210888748db8070b8125c2342ce3dcae4f38dcc63503"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.35", "437773ca9384edf69830e26e9e7b2e0d22d2596c4a6b17094a3b29f01ea65bb8", [:mix], [], "hexpm", "8652ba3cb85608d0d7aa2d21b45c6fad4ddc9a1f9a1f1b30ca3a246f0acc33f6"},
   "elixir_make": {:hex, :elixir_make, "0.6.0", "38349f3e29aff4864352084fc736fa7fa0f2995a819a737554f7ebd28b85aaab", [:mix], [], "hexpm", "d522695b93b7f0b4c0fcb2dfe73a6b905b1c301226a5a55cb42e5b14d509e050"},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
-  "ex_doc": {:hex, :ex_doc, "0.29.0", "4a1cb903ce746aceef9c1f9ae8a6c12b742a5461e6959b9d3b24d813ffbea146", [:mix], [{:earmark_parser, "~> 1.4.19", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "f096adb8bbca677d35d278223361c7792d496b3fc0d0224c9d4bc2f651af5db1"},
+  "ex_doc": {:hex, :ex_doc, "0.30.6", "5f8b54854b240a2b55c9734c4b1d0dd7bdd41f71a095d42a70445c03cf05a281", [:mix], [{:earmark_parser, "~> 1.4.31", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "bd48f2ddacf4e482c727f9293d9498e0881597eae6ddc3d9562bd7923375109f"},
   "gproc": {:hex, :gproc, "0.8.0", "cea02c578589c61e5341fce149ea36ccef236cc2ecac8691fba408e7ea77ec2f", [:rebar3], [], "hexpm", "580adafa56463b75263ef5a5df4c86af321f68694e7786cb057fd805d1e2a7de"},
   "grpcbox": {:hex, :grpcbox, "0.16.0", "b83f37c62d6eeca347b77f9b1ec7e9f62231690cdfeb3a31be07cd4002ba9c82", [:rebar3], [{:acceptor_pool, "~>1.0.0", [hex: :acceptor_pool, repo: "hexpm", optional: false]}, {:chatterbox, "~>0.13.0", [hex: :ts_chatterbox, repo: "hexpm", optional: false]}, {:ctx, "~>0.6.0", [hex: :ctx, repo: "hexpm", optional: false]}, {:gproc, "~>0.8.0", [hex: :gproc, repo: "hexpm", optional: false]}], "hexpm", "294df743ae20a7e030889f00644001370a4f7ce0121f3bbdaf13cf3169c62913"},
   "hpack": {:hex, :hpack_erl, "0.2.3", "17670f83ff984ae6cd74b1c456edde906d27ff013740ee4d9efaa4f1bf999633", [:rebar3], [], "hexpm", "06f580167c4b8b8a6429040df36cc93bba6d571faeaec1b28816523379cbb23a"},
   "makeup": {:hex, :makeup, "1.1.0", "6b67c8bc2882a6b6a445859952a602afc1a41c2e08379ca057c0f525366fc3ca", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0a45ed501f4a8897f580eabf99a2e5234ea3e75a4373c8a52824f6e873be57a6"},
-  "makeup_elixir": {:hex, :makeup_elixir, "0.16.0", "f8c570a0d33f8039513fbccaf7108c5d750f47d8defd44088371191b76492b0b", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "28b2cbdc13960a46ae9a8858c4bebdec3c9a6d7b4b9e7f4ed1502f8159f338e7"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.16.1", "cc9e3ca312f1cfeccc572b37a09980287e243648108384b97ff2b76e505c3555", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "e127a341ad1b209bd80f7bd1620a15693a9908ed780c3b763bccf7d200c767c6"},
-  "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
+  "makeup_erlang": {:hex, :makeup_erlang, "0.1.2", "ad87296a092a46e03b7e9b0be7631ddcf64c790fa68a9ef5323b6cbb36affc72", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "f3f5a1ca93ce6e092d92b6d9c049bcda58a3b617a8d888f8e7231c85630e8108"},
-  "nimble_parsec": {:hex, :nimble_parsec, "1.2.3", "244836e6e3f1200c7f30cb56733fd808744eca61fd182f731eac4af635cc6d0b", [:mix], [], "hexpm", "c8d789e39b9131acf7b99291e93dae60ab48ef14a7ee9d58c6964f59efb570b0"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.3.1", "2c54013ecf170e249e9291ed0a62e5832f70a476c61da16f6aac6dca0189f2af", [:mix], [], "hexpm", "2682e3c0b2eb58d90c6375fc0cc30bc7be06f365bf72608804fb9cffa5e1b167"},
   "opentelemetry": {:hex, :opentelemetry, "1.3.1", "f0a342a74379e3540a634e7047967733da4bc8b873ec9026e224b2bd7369b1fc", [:rebar3], [{:opentelemetry_api, "~> 1.2.2", [hex: :opentelemetry_api, repo: "hexpm", optional: false]}, {:opentelemetry_semantic_conventions, "~> 0.2", [hex: :opentelemetry_semantic_conventions, repo: "hexpm", optional: false]}], "hexpm", "de476b2ac4faad3e3fe3d6e18b35dec9cb338c3b9910c2ce9317836dacad3483"},
   "opentelemetry_api": {:hex, :opentelemetry_api, "1.2.2", "693f47b0d8c76da2095fe858204cfd6350c27fe85d00e4b763deecc9588cf27a", [:mix, :rebar3], [{:opentelemetry_semantic_conventions, "~> 0.2", [hex: :opentelemetry_semantic_conventions, repo: "hexpm", optional: false]}], "hexpm", "dc77b9a00f137a858e60a852f14007bb66eda1ffbeb6c05d5fe6c9e678b05e9d"},
   "opentelemetry_exporter": {:hex, :opentelemetry_exporter, "1.6.0", "f4fbf69aa9f1541b253813221b82b48a9863bc1570d8ecc517bc510c0d1d3d8c", [:rebar3], [{:grpcbox, ">= 0.0.0", [hex: :grpcbox, repo: "hexpm", optional: false]}, {:opentelemetry, "~> 1.3", [hex: :opentelemetry, repo: "hexpm", optional: false]}, {:opentelemetry_api, "~> 1.2", [hex: :opentelemetry_api, repo: "hexpm", optional: false]}, {:tls_certificate_check, "~> 1.18", [hex: :tls_certificate_check, repo: "hexpm", optional: false]}], "hexpm", "1802d1dca297e46f21e5832ecf843c451121e875f73f04db87355a6cb2ba1710"},
   "opentelemetry_semantic_conventions": {:hex, :opentelemetry_semantic_conventions, "0.2.0", "b67fe459c2938fcab341cb0951c44860c62347c005ace1b50f8402576f241435", [:mix, :rebar3], [], "hexpm", "d61fa1f5639ee8668d74b527e6806e0503efc55a42db7b5f39939d84c07d6895"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"},
-  "telemetry": {:hex, :telemetry, "1.1.0", "a589817034a27eab11144ad24d5c0f9fab1f58173274b1e9bae7074af9cbee51", [:rebar3], [], "hexpm", "b727b2a1f75614774cff2d7565b64d0dfa5bd52ba517f16543e6fc7efcc0df48"},
+  "telemetry": {:hex, :telemetry, "1.2.1", "68fdfe8d8f05a8428483a97d7aab2f268aaff24b49e0f599faa091f1d4e7f61c", [:rebar3], [], "hexpm", "dad9ce9d8effc621708f99eac538ef1cbe05d6a874dd741de2e689c47feafed5"},
   "telemetry_registry": {:hex, :telemetry_registry, "0.3.0", "6768f151ea53fc0fbca70dbff5b20a8d663ee4e0c0b2ae589590e08658e76f1e", [:mix, :rebar3], [{:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "492e2adbc609f3e79ece7f29fec363a97a2c484ac78a83098535d6564781e917"},
   "tls_certificate_check": {:hex, :tls_certificate_check, "1.19.0", "c76c4c5d79ee79a2b11c84f910c825d6f024a78427c854f515748e9bd025e987", [:rebar3], [{:ssl_verify_fun, "~> 1.1", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm", "4083b4a298add534c96125337cb01161c358bb32dd870d5a893aae685fd91d70"},
 }

utilities/opentelemetry_telemetry/rebar.config

@@ -1,8 +1,7 @@
 {erl_opts, [debug_info]}.
 {deps, [
   {opentelemetry_api, "~> 1.0"},
-  {telemetry, "~> 1.0"},
+  {telemetry, "~> 1.0"}
-  {telemetry_registry, "~> 0.3.0"}
 ]}.
 
 {project_plugins, [covertool,
@@ -17,8 +16,7 @@
   {test, [{erl_opts, [nowarn_export_all]},
           {deps, [
             {opentelemetry, "~> 1.0"},
-            {opentelemetry_exporter, "~> 1.0"},
+            {opentelemetry_exporter, "~> 1.0"}
-            {test_app, "~> 0.1"}
             ]},
           {paths, ["src", "test/support"]},
           {ct_opts, [{ct_hooks, [cth_surefire]}]}]}]}.

utilities/opentelemetry_telemetry/rebar.lock

@@ -1,14 +1,16 @@
 {"1.2.0",
-[{<<"opentelemetry_api">>,{pkg,<<"opentelemetry_api">>,<<"1.0.2">>},0},
+[{<<"opentelemetry_api">>,{pkg,<<"opentelemetry_api">>,<<"1.2.2">>},0},
- {<<"telemetry">>,{pkg,<<"telemetry">>,<<"1.1.0">>},0},
+ {<<"opentelemetry_semantic_conventions">>,
- {<<"telemetry_registry">>,{pkg,<<"telemetry_registry">>,<<"0.3.0">>},0}]}.
+  {pkg,<<"opentelemetry_semantic_conventions">>,<<"0.2.0">>},
+  1},
+ {<<"telemetry">>,{pkg,<<"telemetry">>,<<"1.2.1">>},0}]}.
 [
 {pkg_hash,[
- {<<"opentelemetry_api">>, <<"91353EE40583B1D4F07D7B13ED62642ABFEC6AAA0D8A2114F07EDAFB2DF781C5">>},
+ {<<"opentelemetry_api">>, <<"693F47B0D8C76DA2095FE858204CFD6350C27FE85D00E4B763DEECC9588CF27A">>},
- {<<"telemetry">>, <<"A589817034A27EAB11144AD24D5C0F9FAB1F58173274B1E9BAE7074AF9CBEE51">>},
+ {<<"opentelemetry_semantic_conventions">>, <<"B67FE459C2938FCAB341CB0951C44860C62347C005ACE1B50F8402576F241435">>},
- {<<"telemetry_registry">>, <<"6768F151EA53FC0FBCA70DBFF5B20A8D663EE4E0C0B2AE589590E08658E76F1E">>}]},
+ {<<"telemetry">>, <<"68FDFE8D8F05A8428483A97D7AAB2F268AAFF24B49E0F599FAA091F1D4E7F61C">>}]},
 {pkg_hash_ext,[
- {<<"opentelemetry_api">>, <<"2A8247F85C44216B883900067478D59955D11E58E5CFCA7C884CD4F203ACE3AC">>},
+ {<<"opentelemetry_api">>, <<"DC77B9A00F137A858E60A852F14007BB66EDA1FFBEB6C05D5FE6C9E678B05E9D">>},
- {<<"telemetry">>, <<"B727B2A1F75614774CFF2D7565B64D0DFA5BD52BA517F16543E6FC7EFCC0DF48">>},
+ {<<"opentelemetry_semantic_conventions">>, <<"D61FA1F5639EE8668D74B527E6806E0503EFC55A42DB7B5F39939D84C07D6895">>},
- {<<"telemetry_registry">>, <<"492E2ADBC609F3E79ECE7F29FEC363A97A2C484AC78A83098535D6564781E917">>}]}
+ {<<"telemetry">>, <<"DAD9CE9D8EFFC621708F99EAC538EF1CBE05D6A874DD741DE2E689C47FEAFED5">>}]}
 ].

utilities/opentelemetry_telemetry/src/opentelemetry_telemetry.app.src

@@ -7,8 +7,7 @@
     stdlib,
     opentelemetry,
     opentelemetry_api,
-    telemetry,
+    telemetry
-    telemetry_registry
    ]},
   {env,[]},
   {modules, []},

utilities/opentelemetry_telemetry/src/otel_telemetry.erl

@@ -1,5 +1,6 @@
 -module(otel_telemetry).
 
+-include_lib("kernel/include/logger.hrl").
 -include_lib("opentelemetry_api/include/opentelemetry.hrl").
 
 -export([
@@ -8,9 +9,8 @@
          handle_event/4,
          start_telemetry_span/4,
          set_current_telemetry_span/2,
-         end_telemetry_span/2,
+         end_telemetry_span/2
-         trace_application/1,
+]).
-         trace_application/2]).
 
 -type telemetry_span_ctx() :: opentelemetry:span_ctx().
 -type parent_span_ctx() :: opentelemetry:span_ctx().
@@ -25,16 +25,6 @@ init(Application) ->
 init(_Application, _Opts) ->
     ok.
 
-trace_application(Application) ->
-    trace_application(Application, []).
-
-trace_application(Application, _Opts) ->
-    _ = telemetry_registry:discover_all([Application]),
-    AllEvents = telemetry_registry:list_events(),
-    SpannableEvents = telemetry_registry:spannable_events(),
-    _ = register_event_handlers(SpannableEvents, AllEvents),
-    ok.
-
 -spec start_telemetry_span(atom(), opentelemetry:span_name(), telemetry:event_metadata(), otel_span:start_opts()) -> opentelemetry:span_ctx().
 start_telemetry_span(TracerId, SpanName, EventMetadata, Opts) ->
     ParentCtx = otel_tracer:current_span_ctx(),
@@ -125,29 +115,6 @@ pop_from_tracer_stack(TracerId) ->
             SpanCtxSet
     end.
 
-register_event_handlers(SpannableEvents, AllEvents) ->
-    lists:foldl(fun ({Prefix, Suffixes}, Handlers) ->
-                      TracerId = tracer_id_for_events(Prefix, Suffixes, AllEvents),
-                      NewHandlers = [attach_handler(Prefix, Suffix, TracerId)
-                                     || Suffix <- Suffixes],
-                      NewHandlers ++ Handlers
-              end,
-              [],
-              SpannableEvents).
-
-attach_handler(Prefix, Suffix, TracerId) ->
-    Event = Prefix ++ [Suffix],
-    SpanName = list_to_binary(lists:join("_",
-                                         [atom_to_binary(Segment, utf8) || Segment <- Prefix])),
-    Config = #{tracer_id => TracerId, type => Suffix, span_name => SpanName},
-    Handler = fun ?MODULE:handle_event/4,
-    telemetry:attach({?MODULE, Event}, Event, Handler, Config).
-
-tracer_id_for_events(Prefix, [Suffix | _], AllEvents) ->
-    Event = Prefix ++ [Suffix],
-    {Event, Module, _Metadata} = lists:keyfind(Event, 1, AllEvents),
-    Module.
-
 handle_event(_Event,
              _Measurements,
              Metadata,

utilities/opentelemetry_telemetry/test/otel_telemetry_SUITE.erl

@@ -24,17 +24,13 @@ end_per_suite(_Config) ->
 
 init_per_testcase(_, Config) ->
     {ok, _} = application:ensure_all_started(telemetry),
-    {ok, _} = application:ensure_all_started(telemetry_registry),
-    {ok, _} = application:ensure_all_started(test_app),
     {ok, _} = application:ensure_all_started(opentelemetry_telemetry),
     otel_batch_processor:set_exporter(otel_exporter_pid, self()),
-    otel_telemetry:trace_application(test_app),
+    attach_event_handlers(),
     Config.
 
 end_per_testcase(_, Config) ->
     application:stop(telemetry),
-    application:stop(telemetry_registry),
-    application:stop(test_app),
     application:stop(opentelemetry_telemetry),
     application:stop(opentelemetry),
     Config.
@@ -42,9 +38,9 @@ end_per_testcase(_, Config) ->
 telemetry_span_handling(_Config) ->
     SpanCtx1 = ?start_span(<<"span-1">>),
     ?set_current_span(SpanCtx1),
-    _Result = test_app:handler(ok),
+    _Result = handler(ok),
     ?assertMatch(SpanCtx1, ?current_span_ctx),
-    try test_app:handler(raise_exception) of
+    try handler(raise_exception) of
         _ -> ok
     catch
         error:badarg -> ok
@@ -72,11 +68,80 @@ successful_span_listener(Name) ->
 
 exception_span_listener(Name) ->
     receive
-        {span, #span{name=Name,events=Events,status=Status,parent_span_id=ParentId,span_id=Id}} ->
+        {span, #span{name=Name,events=Events,status={status,error,Reason},parent_span_id=ParentId,span_id=Id} = Span} ->
-            ?assertEqual({status,error,<<"badarg">>}, Status),
+            ?assertEqual(<<"badarg">>, Reason),
             ?assertEqual(1, erlang:length(otel_events:list(Events))),
             {Id, ParentId}
     after
         5000 ->
             error(timeout)
     end.
+
+handler(Args) ->
+    _ = telemetry:span(
+          [test_app, handler],
+          #{},
+          fun() ->
+                  case Args of
+                      raise_exception ->
+                          binary_to_list("heh, already a list");
+                      _ -> {nested_span(), #{}}
+                  end
+          end).
+
+nested_span() ->
+    _ = telemetry:span(
+          [test_app, nested_span],
+          #{},
+          fun() ->
+              {ok, #{}}
+          end).
+
+-define(TRACER_ID, ?MODULE).
+
+attach_event_handlers() ->
+    Events = [
+              [test_app, handler, start],
+              [test_app, handler, stop],
+              [test_app, handler, exception],
+              [test_app, nested_span, start],
+              [test_app, nested_span, stop],
+              [test_app, nested_span, exception]
+             ],
+    telemetry:attach_many(otel_telemetry_test_handlers, Events, fun ?TRACER_ID:handle_event/4, #{}).
+
+handle_event([test_app, handler, start], _, Meta, _) ->
+    otel_telemetry:start_telemetry_span(?TRACER_ID, <<"test_app_handler">>, Meta, #{});
+
+handle_event([test_app, handler, stop], _, Meta, _) ->
+    otel_telemetry:set_current_telemetry_span(?TRACER_ID, Meta),
+    otel_telemetry:end_telemetry_span(?TRACER_ID, Meta);
+
+handle_event([test_app, handler, exception], _, Meta, _) ->
+    Ctx = otel_telemetry:set_current_telemetry_span(?TRACER_ID, Meta),
+    #{
+      kind := Kind,
+      reason := Reason,
+      stacktrace := Stacktrace
+     } = Meta,
+    otel_span:record_exception(Ctx, Kind, Reason, Stacktrace, []),
+    otel_span:set_status(Ctx, opentelemetry:status(?OTEL_STATUS_ERROR, atom_to_binary(Reason))),
+    otel_telemetry:end_telemetry_span(?TRACER_ID, Meta);
+
+handle_event([test_app, nested_span, start], _, Meta, _) ->
+    otel_telemetry:start_telemetry_span(?TRACER_ID, <<"test_app_nested_span">>, Meta, #{});
+
+handle_event([test_app, nested_span, stop], _, Meta, _) ->
+    otel_telemetry:set_current_telemetry_span(?TRACER_ID, Meta),
+    otel_telemetry:end_telemetry_span(?TRACER_ID, Meta);
+
+handle_event([test_app, nested_span, exception], _, Meta, _) ->
+    Ctx = otel_telemetry:set_current_telemetry_span(?TRACER_ID, Meta),
+    #{
+      kind := Kind,
+      reason := Reason,
+      stacktrace := Stacktrace
+     } = Meta,
+    otel_span:set_status(Ctx, opentelemetry:status(?OTEL_STATUS_ERROR, <<"">>)),
+    otel_span:record_exception(Ctx, Kind, Reason, Stacktrace, []),
+    otel_telemetry:end_telemetry_span(?TRACER_ID, Meta).